v28.1.0

Prepare changelog for v28.1.0
v28.1.0-rc.1
2023-09-12 16:52:42 +01:00 · 2023-09-12 16:52:40 +01:00 · 2023-09-05 16:51:26 +01:00 · 2023-09-05 16:51:23 +01:00 · 2023-09-05 14:58:10 +00:00 · 2023-09-05 14:18:30 +00:00
66 changed files with 3014 additions and 1166 deletions
@@ -23,7 +23,7 @@ jobs:
              )
            )
        steps:
-            - uses: tibdex/backport@2e217641d82d02ba0603f46b1aeedefb258890ac # v2
+            - uses: tibdex/backport@9565281eda0731b1d20c4025c43339fb0a23812e # v2
              with:
                  labels_template: "<%= JSON.stringify([...labels, 'X-Release-Blocker']) %>"
                  # We can't use GITHUB_TOKEN here or CI won't run on the new PR
@@ -15,7 +15,7 @@ concurrency:
 jobs:
    cypress:
        name: Cypress
-        uses: matrix-org/matrix-react-sdk/.github/workflows/cypress.yaml@v3.76.0
+        uses: matrix-org/matrix-react-sdk/.github/workflows/cypress.yaml@v3.78.0
        permissions:
            actions: read
            issues: read
@@ -21,7 +21,7 @@ concurrency:
 jobs:
    build-element-web:
        name: Build element-web
-        uses: matrix-org/matrix-react-sdk/.github/workflows/element-web.yaml@v3.76.0
+        uses: matrix-org/matrix-react-sdk/.github/workflows/element-web.yaml@v3.78.0
        with:
            matrix-js-sdk-sha: ${{ github.sha }}
            react-sdk-repository: matrix-org/matrix-react-sdk
@@ -1,6 +1,41 @@
-Changes in [27.2.0-rc.1](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v27.2.0-rc.1) (2023-08-08)
+Changes in [28.1.0-rc.1](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v28.1.0-rc.1) (2023-09-05)
 ============================================================================================================

+## 🦖 Deprecations
+ * Deprecate `MatrixClient.checkUserTrust` ([\#3691](https://github.com/matrix-org/matrix-js-sdk/pull/3691)).
+ * Deprecate `MatrixClient.{prepare,create}KeyBackupVersion` in favour of new `CryptoApi.resetKeyBackup` API ([\#3689](https://github.com/matrix-org/matrix-js-sdk/pull/3689)).
+ * **The Browserify artifact is being deprecated, scheduled for removal in the October 10th release cycle. (#3189)**
+
+## ✨ Features
+ * Allow calls without ICE/TURN/STUN servers ([\#3695](https://github.com/matrix-org/matrix-js-sdk/pull/3695)).
+ * Emit summary update event ([\#3687](https://github.com/matrix-org/matrix-js-sdk/pull/3687)). Fixes vector-im/element-web#26033.
+ * ElementR: Update `CryptoApi.userHasCrossSigningKeys` ([\#3646](https://github.com/matrix-org/matrix-js-sdk/pull/3646)). Contributed by @florianduros.
+ * Add `join_rule` field to /publicRooms response ([\#3673](https://github.com/matrix-org/matrix-js-sdk/pull/3673)). Contributed by @charlynguyen.
+ * Use sender instead of content.creator field on m.room.create events ([\#3675](https://github.com/matrix-org/matrix-js-sdk/pull/3675)).
+
+## 🐛 Bug Fixes
+ * Provide better error for ICE Server SyntaxError ([\#3694](https://github.com/matrix-org/matrix-js-sdk/pull/3694)). Fixes vector-im/element-web#21804.
+ * Legacy crypto: re-check key backup after `bootstrapSecretStorage` ([\#3692](https://github.com/matrix-org/matrix-js-sdk/pull/3692)). Fixes vector-im/element-web#26115.
+
+Changes in [28.0.0](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v28.0.0) (2023-08-29)
+==================================================================================================
+
+## 🚨 BREAKING CHANGES
+ * Set minimum supported Matrix 1.1 version (drop legacy r0 versions) ([\#3007](https://github.com/matrix-org/matrix-js-sdk/pull/3007)). Fixes vector-im/element-web#16876.
+
+## 🦖 Deprecations
+ * **The Browserify artifact is being deprecated, scheduled for removal in the October 10th release cycle. (#3189)**
+
+## ✨ Features
+ * ElementR: Add `CryptoApi.requestVerificationDM` ([\#3643](https://github.com/matrix-org/matrix-js-sdk/pull/3643)). Contributed by @florianduros.
+ * Implement `CryptoApi.checkKeyBackupAndEnable` ([\#3633](https://github.com/matrix-org/matrix-js-sdk/pull/3633)). Fixes vector-im/crypto-internal#111 and vector-im/crypto-internal#112.
+
+## 🐛 Bug Fixes
+ * ElementR: Process all verification events, not just requests ([\#3650](https://github.com/matrix-org/matrix-js-sdk/pull/3650)). Contributed by @florianduros.
+
+Changes in [27.2.0](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v27.2.0) (2023-08-15)
+==================================================================================================
+
 ## 🦖 Deprecations
 * **The Browserify artifact is being deprecated, scheduled for removal in the October 10th release cycle. (#3189)**

@@ -11,6 +11,8 @@
 This is the [Matrix](https://matrix.org) Client-Server SDK for JavaScript and TypeScript. This SDK can be run in a
 browser or in Node.js.

+#### Minimum Matrix server version: v1.1
+
 The Matrix specification is constantly evolving - while this SDK aims for maximum backwards compatibility, it only
 guarantees that a feature will be supported for at least 4 spec releases. For example, if a feature the js-sdk supports
 is removed in v1.4 then the feature is _eligible_ for removal from the SDK when v1.8 is released. This SDK has no
@@ -1,6 +1,6 @@
 {
    "name": "matrix-js-sdk",
-    "version": "27.2.0-rc.1",
+    "version": "28.1.0",
    "description": "Matrix Client-Server SDK for Javascript",
    "engines": {
        "node": ">=18.0.0"
@@ -55,7 +55,7 @@
    ],
    "dependencies": {
        "@babel/runtime": "^7.12.5",
-        "@matrix-org/matrix-sdk-crypto-wasm": "^1.2.0",
+        "@matrix-org/matrix-sdk-crypto-wasm": "^1.2.1",
        "another-json": "^0.2.0",
        "bs58": "^5.0.0",
        "content-type": "^1.0.4",
@@ -101,9 +101,9 @@
        "browserify-swap": "^0.2.2",
        "debug": "^4.3.4",
        "domexception": "^4.0.0",
-        "eslint": "8.45.0",
+        "eslint": "8.47.0",
        "eslint-config-google": "^0.14.0",
-        "eslint-config-prettier": "^8.5.0",
+        "eslint-config-prettier": "^9.0.0",
        "eslint-import-resolver-typescript": "^3.5.1",
        "eslint-plugin-import": "^2.26.0",
        "eslint-plugin-jest": "^27.1.6",
@@ -90,7 +90,7 @@ export class TestClient implements IE2EKeyReceiver, ISyncResponder {
        logger.log(this + ": starting");
        this.httpBackend.when("GET", "/versions").respond(200, {
            // we have tests that rely on support for lazy-loading members
-            versions: ["r0.5.0"],
+            versions: ["v1.1"],
        });
        this.httpBackend.when("GET", "/pushrules").respond(200, {});
        this.httpBackend.when("POST", "/filter").respond(200, { filter_id: "fid" });
@@ -25,17 +25,28 @@ import Olm from "@matrix-org/olm";
 import type { IDeviceKeys } from "../../../src/@types/crypto";
 import * as testUtils from "../../test-utils/test-utils";
 import { CRYPTO_BACKENDS, getSyncResponse, InitCrypto, syncPromise } from "../../test-utils/test-utils";
-import { TEST_ROOM_ID, TEST_ROOM_ID as ROOM_ID, TEST_USER_ID } from "../../test-utils/test-data";
+import {
+    BOB_SIGNED_CROSS_SIGNING_KEYS_DATA,
+    BOB_SIGNED_TEST_DEVICE_DATA,
+    BOB_TEST_USER_ID,
+    SIGNED_CROSS_SIGNING_KEYS_DATA,
+    SIGNED_TEST_DEVICE_DATA,
+    TEST_ROOM_ID,
+    TEST_ROOM_ID as ROOM_ID,
+    TEST_USER_ID,
+} from "../../test-utils/test-data";
 import { TestClient } from "../../TestClient";
 import { logger } from "../../../src/logger";
 import {
    Category,
    createClient,
+    CryptoEvent,
    IClaimOTKsResult,
    IContent,
    IDownloadKeyResult,
    IEvent,
    IndexedDBCryptoStore,
+    IRoomEvent,
    IStartClientOpts,
    MatrixClient,
    MatrixEvent,
@@ -44,7 +55,6 @@ import {
    Room,
    RoomMember,
    RoomStateEvent,
-    IRoomEvent,
 } from "../../../src/matrix";
 import { DeviceInfo } from "../../../src/crypto/deviceinfo";
 import { E2EKeyReceiver, IE2EKeyReceiver } from "../../test-utils/E2EKeyReceiver";
@@ -52,9 +62,13 @@ import { ISyncResponder, SyncResponder } from "../../test-utils/SyncResponder";
 import { escapeRegExp } from "../../../src/utils";
 import { downloadDeviceToJsDevice } from "../../../src/rust-crypto/device-converter";
 import { flushPromises } from "../../test-utils/flushPromises";
-import { mockInitialApiRequests, mockSetupCrossSigningRequests } from "../../test-utils/mockEndpoints";
+import {
+    mockInitialApiRequests,
+    mockSetupCrossSigningRequests,
+    mockSetupMegolmBackupRequests,
+} from "../../test-utils/mockEndpoints";
 import { AddSecretStorageKeyOpts, SECRET_STORAGE_ALGORITHM_V1_AES } from "../../../src/secret-storage";
-import { CryptoCallbacks } from "../../../src/crypto-api";
+import { CrossSigningKey, CryptoCallbacks, KeyBackupInfo } from "../../../src/crypto-api";
 import { E2EKeyResponder } from "../../test-utils/E2EKeyResponder";

 afterEach(() => {
@@ -1945,7 +1959,7 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("crypto (%s)", (backend: string,
                    };
                };

-                for (const path of ["/_matrix/client/r0/keys/upload", "/_matrix/client/v3/keys/upload"]) {
+                for (const path of ["/_matrix/client/v3/keys/upload", "/_matrix/client/v3/keys/upload"]) {
                    fetchMock.post(new URL(path, aliceClient.getHomeserverUrl()).toString(), listener, {
                        // These routes are already defined in the E2EKeyReceiver
                        // We want to overwrite the behaviour of the E2EKeyReceiver
@@ -2082,9 +2096,10 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("crypto (%s)", (backend: string,
                    return queryResponseBody;
                };

-                for (const path of ["/_matrix/client/r0/keys/query", "/_matrix/client/v3/keys/query"]) {
-                    fetchMock.post(new URL(path, aliceClient.getHomeserverUrl()).toString(), listener);
-                }
+                fetchMock.post(
+                    new URL("/_matrix/client/v3/keys/query", aliceClient.getHomeserverUrl()).toString(),
+                    listener,
+                );
            });
        }

@@ -2175,7 +2190,7 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("crypto (%s)", (backend: string,
        });

        /**
-         * Create a mock to respond to the PUT request `/_matrix/client/r0/user/:userId/account_data/:type(m.secret_storage.*)`
+         * Create a mock to respond to the PUT request `/_matrix/client/v3/user/:userId/account_data/:type(m.secret_storage.*)`
         * Resolved when a key is uploaded (ie in `body.content.key`)
         * https://spec.matrix.org/v1.6/client-server-api/#put_matrixclientv3useruseridaccount_datatype
         */
@@ -2184,14 +2199,12 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("crypto (%s)", (backend: string,
                // This url is called multiple times during the secret storage bootstrap process
                // When we received the newly generated key, we return it
                fetchMock.put(
-                    "express:/_matrix/client/r0/user/:userId/account_data/:type(m.secret_storage.*)",
+                    "express:/_matrix/client/v3/user/:userId/account_data/:type(m.secret_storage.*)",
                    (url: string, options: RequestInit) => {
                        const content = JSON.parse(options.body as string);
-
                        if (content.key) {
                            resolve(content.key);
                        }
-
                        return {};
                    },
                    { overwriteRoutes: true },
@@ -2200,7 +2213,7 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("crypto (%s)", (backend: string,
        }

        /**
-         * Create a mock to respond to the PUT request `/_matrix/client/r0/user/:userId/account_data/m.cross_signing.${key}`
+         * Create a mock to respond to the PUT request `/_matrix/client/v3/user/:userId/account_data/m.cross_signing.${key}`
         * Resolved when the cross signing key is uploaded
         * https://spec.matrix.org/v1.6/client-server-api/#put_matrixclientv3useruseridaccount_datatype
         */
@@ -2208,7 +2221,7 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("crypto (%s)", (backend: string,
            return new Promise((resolve) => {
                // Called when the cross signing key is uploaded
                fetchMock.put(
-                    `express:/_matrix/client/r0/user/:userId/account_data/m.cross_signing.${key}`,
+                    `express:/_matrix/client/v3/user/:userId/account_data/m.cross_signing.${key}`,
                    (url: string, options: RequestInit) => {
                        const content = JSON.parse(options.body as string);
                        resolve(content.encrypted);
@@ -2218,6 +2231,73 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("crypto (%s)", (backend: string,
            });
        }

+        function awaitMegolmBackupKeyUpload(): Promise<Record<string, {}>> {
+            return new Promise((resolve) => {
+                // Called when the megolm backup key is uploaded
+                fetchMock.put(
+                    `express:/_matrix/client/v3/user/:userId/account_data/m.megolm_backup.v1`,
+                    (url: string, options: RequestInit) => {
+                        const content = JSON.parse(options.body as string);
+                        resolve(content.encrypted);
+                        return {};
+                    },
+                    { overwriteRoutes: true },
+                );
+            });
+        }
+
+        /**
+         * Add all mocks needed to setup cross-signing, key backup, 4S and then
+         * configure the account to have recovery.
+         *
+         * @param backupVersion - The version of the created backup
+         */
+        async function bootstrapSecurity(backupVersion: string): Promise<void> {
+            mockSetupCrossSigningRequests();
+            mockSetupMegolmBackupRequests(backupVersion);
+
+            // promise which will resolve when a `KeyBackupStatus` event is emitted with `enabled: true`
+            const backupStatusUpdate = new Promise<void>((resolve) => {
+                aliceClient.on(CryptoEvent.KeyBackupStatus, (enabled) => {
+                    if (enabled) {
+                        resolve();
+                    }
+                });
+            });
+
+            const setupPromises = [
+                awaitCrossSigningKeyUpload("master"),
+                awaitCrossSigningKeyUpload("user_signing"),
+                awaitCrossSigningKeyUpload("self_signing"),
+                awaitMegolmBackupKeyUpload(),
+            ];
+
+            // Before setting up secret-storage, bootstrap cross-signing, so that the client has cross-signing keys.
+            await aliceClient.getCrypto()!.bootstrapCrossSigning({});
+
+            // Now, when we bootstrap secret-storage, the cross-signing keys should be uploaded.
+            const bootstrapPromise = aliceClient.getCrypto()!.bootstrapSecretStorage({
+                setupNewSecretStorage: true,
+                createSecretStorageKey,
+                setupNewKeyBackup: true,
+            });
+
+            // Wait for the key to be uploaded in the account data
+            const secretStorageKey = await awaitSecretStorageKeyStoredInAccountData();
+
+            // Return the newly created key in the sync response
+            sendSyncResponse(secretStorageKey);
+
+            // Wait for the cross signing keys to be uploaded
+            await Promise.all(setupPromises);
+
+            // wait for bootstrapSecretStorage to finished
+            await bootstrapPromise;
+            // Finally ensure backup is working
+            await aliceClient.getCrypto()!.checkKeyBackupAndEnable();
+            await backupStatusUpdate;
+        }
+
        /**
         * Send in the sync response the provided `secretStorageKey` into the account_data field
         * The key is set for the `m.secret_storage.default_key` and `m.secret_storage.key.${secretStorageKey}` events
@@ -2265,7 +2345,7 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("crypto (%s)", (backend: string,
            },
        );

-        newBackendOnly("should create a new key", async () => {
+        it("should create a new key", async () => {
            const bootstrapPromise = aliceClient
                .getCrypto()!
                .bootstrapSecretStorage({ setupNewSecretStorage: true, createSecretStorageKey });
@@ -2308,46 +2388,43 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("crypto (%s)", (backend: string,
            },
        );

-        newBackendOnly(
-            "should create a new key if setupNewSecretStorage is at true even if an AES key is already in the secret storage",
-            async () => {
-                let bootstrapPromise = aliceClient
-                    .getCrypto()!
-                    .bootstrapSecretStorage({ setupNewSecretStorage: true, createSecretStorageKey });
+        it("should create a new key if setupNewSecretStorage is at true even if an AES key is already in the secret storage", async () => {
+            let bootstrapPromise = aliceClient
+                .getCrypto()!
+                .bootstrapSecretStorage({ setupNewSecretStorage: true, createSecretStorageKey });

-                // Wait for the key to be uploaded in the account data
-                let secretStorageKey = await awaitSecretStorageKeyStoredInAccountData();
+            // Wait for the key to be uploaded in the account data
+            let secretStorageKey = await awaitSecretStorageKeyStoredInAccountData();

-                // Return the newly created key in the sync response
-                sendSyncResponse(secretStorageKey);
+            // Return the newly created key in the sync response
+            sendSyncResponse(secretStorageKey);

-                // Wait for bootstrapSecretStorage to finished
-                await bootstrapPromise;
+            // Wait for bootstrapSecretStorage to finished
+            await bootstrapPromise;

-                // Call again bootstrapSecretStorage
-                bootstrapPromise = aliceClient
-                    .getCrypto()!
-                    .bootstrapSecretStorage({ setupNewSecretStorage: true, createSecretStorageKey });
+            // Call again bootstrapSecretStorage
+            bootstrapPromise = aliceClient
+                .getCrypto()!
+                .bootstrapSecretStorage({ setupNewSecretStorage: true, createSecretStorageKey });

-                // Wait for the key to be uploaded in the account data
-                secretStorageKey = await awaitSecretStorageKeyStoredInAccountData();
+            // Wait for the key to be uploaded in the account data
+            secretStorageKey = await awaitSecretStorageKeyStoredInAccountData();

-                // Return the newly created key in the sync response
-                sendSyncResponse(secretStorageKey);
+            // Return the newly created key in the sync response
+            sendSyncResponse(secretStorageKey);

-                // Wait for bootstrapSecretStorage to finished
-                await bootstrapPromise;
+            // Wait for bootstrapSecretStorage to finished
+            await bootstrapPromise;

-                // createSecretStorageKey should have been called twice, one time every bootstrapSecretStorage call
-                expect(createSecretStorageKey).toHaveBeenCalledTimes(2);
-            },
-        );
+            // createSecretStorageKey should have been called twice, one time every bootstrapSecretStorage call
+            expect(createSecretStorageKey).toHaveBeenCalledTimes(2);
+        });

-        newBackendOnly("should upload cross signing keys", async () => {
+        it("should upload cross signing keys", async () => {
            mockSetupCrossSigningRequests();

            // Before setting up secret-storage, bootstrap cross-signing, so that the client has cross-signing keys.
-            await aliceClient.getCrypto()?.bootstrapCrossSigning({});
+            await aliceClient.getCrypto()!.bootstrapCrossSigning({});

            // Now, when we bootstrap secret-storage, the cross-signing keys should be uploaded.
            const bootstrapPromise = aliceClient
@@ -2375,6 +2452,104 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("crypto (%s)", (backend: string,
            expect(userSigningKey[secretStorageKey]).toBeDefined();
            expect(selfSigningKey[secretStorageKey]).toBeDefined();
        });
+
+        it("should create a new megolm backup", async () => {
+            const backupVersion = "abc";
+            await bootstrapSecurity(backupVersion);
+
+            // Expect a backup to be available and used
+            const activeBackup = await aliceClient.getCrypto()!.getActiveSessionBackupVersion();
+            expect(activeBackup).toStrictEqual(backupVersion);
+
+            // check that there is a MSK signature
+            const signatures = (await aliceClient.getCrypto()!.checkKeyBackupAndEnable())!.backupInfo.auth_data!
+                .signatures;
+            expect(signatures).toBeDefined();
+            expect(signatures![aliceClient.getUserId()!]).toBeDefined();
+            const mskId = await aliceClient.getCrypto()!.getCrossSigningKeyId(CrossSigningKey.Master)!;
+            expect(signatures![aliceClient.getUserId()!][`ed25519:${mskId}`]).toBeDefined();
+        });
+
+        it("Reset key backup should create a new backup and update 4S", async () => {
+            // First set up 4S and key backup
+            const backupVersion = "1";
+            await bootstrapSecurity(backupVersion);
+
+            const currentVersion = await aliceClient.getCrypto()!.getActiveSessionBackupVersion();
+            const currentBackupKey = await aliceClient.getCrypto()!.getSessionBackupPrivateKey();
+
+            // we will call reset backup, it should delete the existing one, then setup a new one
+            // Let's mock for that
+
+            // Mock delete and replace the GET to return 404 as soon as called
+            const awaitDeleteCalled = new Promise<void>((resolve) => {
+                fetchMock.delete(
+                    "express:/_matrix/client/v3/room_keys/version/:version",
+                    (url: string, options: RequestInit) => {
+                        fetchMock.get(
+                            "path:/_matrix/client/v3/room_keys/version",
+                            {
+                                status: 404,
+                                body: { errcode: "M_NOT_FOUND", error: "Account data not found." },
+                            },
+                            { overwriteRoutes: true },
+                        );
+                        resolve();
+                        return {};
+                    },
+                    { overwriteRoutes: true },
+                );
+            });
+
+            const newVersion = "2";
+            fetchMock.post(
+                "path:/_matrix/client/v3/room_keys/version",
+                (url, request) => {
+                    const backupData: KeyBackupInfo = JSON.parse(request.body?.toString() ?? "{}");
+                    backupData.version = newVersion;
+                    backupData.count = 0;
+                    backupData.etag = "zer";
+
+                    // update get call with new version
+                    fetchMock.get("path:/_matrix/client/v3/room_keys/version", backupData, {
+                        overwriteRoutes: true,
+                    });
+                    return {
+                        version: backupVersion,
+                    };
+                },
+                { overwriteRoutes: true },
+            );
+
+            const newBackupStatusUpdate = new Promise<void>((resolve) => {
+                aliceClient.on(CryptoEvent.KeyBackupStatus, (enabled) => {
+                    if (enabled) {
+                        resolve();
+                    }
+                });
+            });
+
+            const newBackupUploadPromise = awaitMegolmBackupKeyUpload();
+
+            await aliceClient.getCrypto()!.resetKeyBackup();
+            await awaitDeleteCalled;
+            await newBackupStatusUpdate;
+            await newBackupUploadPromise;
+
+            const nextVersion = await aliceClient.getCrypto()!.getActiveSessionBackupVersion();
+            const nextKey = await aliceClient.getCrypto()!.getSessionBackupPrivateKey();
+
+            expect(nextVersion).toBeDefined();
+            expect(nextVersion).not.toEqual(currentVersion);
+            expect(nextKey).not.toEqual(currentBackupKey);
+
+            // The `deleteKeyBackupVersion` API is deprecated but has been modified to work with both crypto backend
+            // ensure that it works anyhow
+            await aliceClient.deleteKeyBackupVersion(nextVersion!);
+            await aliceClient.getCrypto()!.checkKeyBackupAndEnable();
+            // XXX Legacy crypto does not update 4S when doing that; should ensure that rust implem does it.
+            expect(await aliceClient.getCrypto()!.getActiveSessionBackupVersion()).toBeNull();
+        });
    });

    describe("Incoming verification in a DM", () => {
@@ -2565,4 +2740,46 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("crypto (%s)", (backend: string,
            },
        );
    });
+
+    describe("Check if the cross signing keys are available for a user", () => {
+        beforeEach(async () => {
+            // anything that we don't have a specific matcher for silently returns a 404
+            fetchMock.catch(404);
+
+            keyResponder = new E2EKeyResponder(aliceClient.getHomeserverUrl());
+            keyResponder.addCrossSigningData(SIGNED_CROSS_SIGNING_KEYS_DATA);
+            keyResponder.addDeviceKeys(SIGNED_TEST_DEVICE_DATA);
+            keyResponder.addKeyReceiver(BOB_TEST_USER_ID, keyReceiver);
+            keyResponder.addCrossSigningData(BOB_SIGNED_CROSS_SIGNING_KEYS_DATA);
+            keyResponder.addDeviceKeys(BOB_SIGNED_TEST_DEVICE_DATA);
+
+            expectAliceKeyQuery({ device_keys: { "@alice:localhost": {} }, failures: {} });
+            await startClientAndAwaitFirstSync();
+        });
+
+        it("Cross signing keys are available for an untracked user with cross signing keys on the homeserver", async () => {
+            // Needed for old crypto, download and cache locally the cross signing keys of Bob
+            await aliceClient.getCrypto()?.getUserDeviceInfo([BOB_TEST_USER_ID], true);
+
+            const hasCrossSigningKeysForUser = await aliceClient
+                .getCrypto()!
+                .userHasCrossSigningKeys(BOB_TEST_USER_ID, true);
+            expect(hasCrossSigningKeysForUser).toBe(true);
+        });
+
+        it("Cross signing keys are available for a tracked user", async () => {
+            // Process Alice keys, old crypto has a sleep(5ms) during the process
+            await jest.advanceTimersByTimeAsync(5);
+            await flushPromises();
+
+            // Alice is the local user and should be tracked !
+            const hasCrossSigningKeysForUser = await aliceClient.getCrypto()!.userHasCrossSigningKeys(TEST_USER_ID);
+            expect(hasCrossSigningKeysForUser).toBe(true);
+        });
+
+        it("Cross signing keys are not available for an unknown user", async () => {
+            const hasCrossSigningKeysForUser = await aliceClient.getCrypto()!.userHasCrossSigningKeys("@unknown:xyz");
+            expect(hasCrossSigningKeysForUser).toBe(false);
+        });
+    });
 });
@@ -19,7 +19,7 @@ import "fake-indexeddb/auto";
 import { IDBFactory } from "fake-indexeddb";

 import { IKeyBackupSession } from "../../../src/crypto/keybackup";
-import { createClient, CryptoEvent, ICreateClientOpts, IEvent, MatrixClient } from "../../../src";
+import { createClient, CryptoEvent, ICreateClientOpts, IEvent, MatrixClient, TypedEventEmitter } from "../../../src";
 import { SyncResponder } from "../../test-utils/SyncResponder";
 import { E2EKeyReceiver } from "../../test-utils/E2EKeyReceiver";
 import { E2EKeyResponder } from "../../test-utils/E2EKeyResponder";
@@ -27,6 +27,7 @@ import { mockInitialApiRequests } from "../../test-utils/mockEndpoints";
 import { awaitDecryption, CRYPTO_BACKENDS, InitCrypto, syncPromise } from "../../test-utils/test-utils";
 import * as testData from "../../test-utils/test-data";
 import { KeyBackupInfo } from "../../../src/crypto-api/keybackup";
+import { IKeyBackup } from "../../../src/crypto/backup";

 const ROOM_ID = "!ROOM:ID";

@@ -83,6 +84,58 @@ afterEach(() => {
    indexedDB = new IDBFactory();
 });

+enum MockKeyUploadEvent {
+    KeyUploaded = "KeyUploaded",
+}
+
+type MockKeyUploadEventHandlerMap = {
+    [MockKeyUploadEvent.KeyUploaded]: (roomId: string, sessionId: string, backupVersion: string) => void;
+};
+
+/*
+ * Test helper. Returns an event emitter that will emit an event every time fetchmock sees a request to backup a key.
+ */
+function mockUploadEmitter(
+    expectedVersion: string,
+): TypedEventEmitter<MockKeyUploadEvent, MockKeyUploadEventHandlerMap> {
+    const emitter = new TypedEventEmitter();
+    fetchMock.put(
+        "path:/_matrix/client/v3/room_keys/keys",
+        (url, request) => {
+            const version = new URLSearchParams(new URL(url).search).get("version");
+            if (version != expectedVersion) {
+                return {
+                    status: 403,
+                    body: {
+                        current_version: expectedVersion,
+                        errcode: "M_WRONG_ROOM_KEYS_VERSION",
+                        error: "Wrong backup version.",
+                    },
+                };
+            }
+            const uploadPayload: IKeyBackup = JSON.parse(request.body?.toString() ?? "{}");
+            let count = 0;
+            for (const [roomId, value] of Object.entries(uploadPayload.rooms)) {
+                for (const sessionId of Object.keys(value.sessions)) {
+                    emitter.emit(MockKeyUploadEvent.KeyUploaded, roomId, sessionId, version);
+                    count++;
+                }
+            }
+            return {
+                status: 200,
+                body: {
+                    count: count,
+                    etag: "abcdefg",
+                },
+            };
+        },
+        {
+            overwriteRoutes: true,
+        },
+    );
+    return emitter;
+}
+
 describe.each(Object.entries(CRYPTO_BACKENDS))("megolm-keys backup (%s)", (backend: string, initCrypto: InitCrypto) => {
    // oldBackendOnly is an alternative to `it` or `test` which will skip the test if we are running against the
    // Rust backend. Once we have full support in the rust sdk, it will go away.
@@ -176,7 +229,256 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("megolm-keys backup (%s)", (backe
        expect(event.getContent()).toEqual("testytest");
    });

-    oldBackendOnly("getActiveSessionBackupVersion() should give correct result", async function () {
+    describe("backupLoop", () => {
+        it("Alice should upload known keys when backup is enabled", async function () {
+            // 404 means that there is no active backup
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", 404);
+
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+            await aliceClient.startClient();
+
+            // tell Alice to trust the dummy device that signed the backup
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            // check that signalling is working
+            const remainingZeroPromise = new Promise<void>((resolve, reject) => {
+                aliceClient.on(CryptoEvent.KeyBackupSessionsRemaining, (remaining) => {
+                    if (remaining == 0) {
+                        resolve();
+                    }
+                });
+            });
+
+            const someRoomKeys = testData.MEGOLM_SESSION_DATA_ARRAY;
+
+            const uploadMockEmitter = mockUploadEmitter(testData.SIGNED_BACKUP_DATA.version!);
+
+            const uploadPromises = someRoomKeys.map((data) => {
+                new Promise<void>((resolve) => {
+                    uploadMockEmitter.on(MockKeyUploadEvent.KeyUploaded, (roomId, sessionId, version) => {
+                        if (
+                            data.room_id == roomId &&
+                            data.session_id == sessionId &&
+                            version == testData.SIGNED_BACKUP_DATA.version
+                        ) {
+                            resolve();
+                        }
+                    });
+                });
+            });
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA, {
+                overwriteRoutes: true,
+            });
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+
+            await aliceCrypto.importRoomKeys(someRoomKeys);
+
+            // The backup loop is waiting a random amount of time to avoid different clients firing at the same time.
+            jest.runAllTimers();
+
+            await Promise.all(uploadPromises);
+
+            // Wait until all keys are backed up to ensure that when a new key is received the loop is restarted
+            await remainingZeroPromise;
+
+            // A new key import should trigger a new upload.
+            const newKey = testData.MEGOLM_SESSION_DATA;
+
+            const newKeyUploadPromise = new Promise<void>((resolve) => {
+                uploadMockEmitter.on(MockKeyUploadEvent.KeyUploaded, (roomId, sessionId, version) => {
+                    if (
+                        newKey.room_id == roomId &&
+                        newKey.session_id == sessionId &&
+                        version == testData.SIGNED_BACKUP_DATA.version
+                    ) {
+                        resolve();
+                    }
+                });
+            });
+
+            await aliceCrypto.importRoomKeys([newKey]);
+
+            jest.runAllTimers();
+            await newKeyUploadPromise;
+        });
+
+        it("Alice should re-upload all keys if a new trusted backup is available", async function () {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+            await aliceClient.startClient();
+
+            // tell Alice to trust the dummy device that signed the backup
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            // check that signalling is working
+            const remainingZeroPromise = new Promise<void>((resolve) => {
+                aliceClient.on(CryptoEvent.KeyBackupSessionsRemaining, (remaining) => {
+                    if (remaining == 0) {
+                        resolve();
+                    }
+                });
+            });
+
+            const someRoomKeys = testData.MEGOLM_SESSION_DATA_ARRAY;
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA, {
+                overwriteRoutes: true,
+            });
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+
+            mockUploadEmitter(testData.SIGNED_BACKUP_DATA.version!);
+            await aliceCrypto.importRoomKeys(someRoomKeys);
+
+            // The backup loop is waiting a random amount of time to avoid different clients firing at the same time.
+            jest.runAllTimers();
+
+            // wait for all keys to be backed up
+            await remainingZeroPromise;
+
+            const newBackupVersion = "2";
+            const uploadMockEmitter = mockUploadEmitter(newBackupVersion);
+            const newBackup = JSON.parse(JSON.stringify(testData.SIGNED_BACKUP_DATA));
+            newBackup.version = newBackupVersion;
+
+            // Let's simulate that a new backup is available by returning error code on key upload
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", newBackup, {
+                overwriteRoutes: true,
+            });
+
+            // If we import a new key the loop will try to upload to old version, it will
+            // fail then check the current version and switch if trusted
+            const uploadPromises = someRoomKeys.map((data) => {
+                new Promise<void>((resolve) => {
+                    uploadMockEmitter.on(MockKeyUploadEvent.KeyUploaded, (roomId, sessionId, version) => {
+                        if (data.room_id == roomId && data.session_id == sessionId && version == newBackupVersion) {
+                            resolve();
+                        }
+                    });
+                });
+            });
+
+            const disableOldBackup = new Promise<void>((resolve) => {
+                aliceClient.on(CryptoEvent.KeyBackupFailed, (errCode) => {
+                    if (errCode == "M_WRONG_ROOM_KEYS_VERSION") {
+                        resolve();
+                    }
+                });
+            });
+
+            const enableNewBackup = new Promise<void>((resolve) => {
+                aliceClient.on(CryptoEvent.KeyBackupStatus, (enabled) => {
+                    if (enabled) {
+                        resolve();
+                    }
+                });
+            });
+
+            // A new key import should trigger a new upload.
+            const newKey = testData.MEGOLM_SESSION_DATA;
+
+            const newKeyUploadPromise = new Promise<void>((resolve) => {
+                uploadMockEmitter.on(MockKeyUploadEvent.KeyUploaded, (roomId, sessionId, version) => {
+                    if (newKey.room_id == roomId && newKey.session_id == sessionId && version == newBackupVersion) {
+                        resolve();
+                    }
+                });
+            });
+
+            await aliceCrypto.importRoomKeys([newKey]);
+
+            jest.runAllTimers();
+
+            await disableOldBackup;
+            await enableNewBackup;
+
+            jest.runAllTimers();
+
+            await Promise.all(uploadPromises);
+            await newKeyUploadPromise;
+        });
+
+        it("Backup loop should be resistant to network failures", async function () {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+            await aliceClient.startClient();
+
+            // tell Alice to trust the dummy device that signed the backup
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA, {
+                overwriteRoutes: true,
+            });
+
+            // on the first key upload attempt, simulate a network failure
+            const failurePromise = new Promise((resolve) => {
+                fetchMock.put(
+                    "path:/_matrix/client/v3/room_keys/keys",
+                    () => {
+                        resolve(undefined);
+                        throw new TypeError(`Failed to fetch`);
+                    },
+                    {
+                        overwriteRoutes: true,
+                    },
+                );
+            });
+
+            // kick the import loop off and wait for the failed request
+            const someRoomKeys = testData.MEGOLM_SESSION_DATA_ARRAY;
+            await aliceCrypto.importRoomKeys(someRoomKeys);
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+            jest.runAllTimers();
+            await failurePromise;
+
+            // Fix the endpoint to do successful uploads
+            const successPromise = new Promise((resolve) => {
+                fetchMock.put(
+                    "path:/_matrix/client/v3/room_keys/keys",
+                    () => {
+                        resolve(undefined);
+                        return {
+                            status: 200,
+                            body: {
+                                count: 2,
+                                etag: "abcdefg",
+                            },
+                        };
+                    },
+                    {
+                        overwriteRoutes: true,
+                    },
+                );
+            });
+
+            // check that a `KeyBackupSessionsRemaining` event is emitted with `remaining == 0`
+            const allKeysUploadedPromise = new Promise((resolve) => {
+                aliceClient.on(CryptoEvent.KeyBackupSessionsRemaining, (remaining) => {
+                    if (remaining == 0) {
+                        resolve(undefined);
+                    }
+                });
+            });
+
+            // run the timers, which will make the backup loop redo the request
+            await jest.runAllTimersAsync();
+            await successPromise;
+            await allKeysUploadedPromise;
+        });
+    });
+
+    it("getActiveSessionBackupVersion() should give correct result", async function () {
        // 404 means that there is no active backup
        fetchMock.get("express:/_matrix/client/v3/room_keys/version", 404);

@@ -187,7 +489,7 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("megolm-keys backup (%s)", (backe
        // tell Alice to trust the dummy device that signed the backup
        await waitForDeviceList();
        await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
-        await aliceClient.checkKeyBackup();
+        await aliceCrypto.checkKeyBackupAndEnable();

        // At this point there is no backup
        let backupStatus: string | null;
@@ -201,9 +503,9 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("megolm-keys backup (%s)", (backe
            overwriteRoutes: true,
        });

-        const checked = await aliceClient.checkKeyBackup();
+        const checked = await aliceCrypto.checkKeyBackupAndEnable();
        expect(checked?.backupInfo?.version).toStrictEqual(unsignedBackup.version);
-        expect(checked?.trustInfo?.usable).toBeFalsy();
+        expect(checked?.trustInfo?.trusted).toBeFalsy();

        backupStatus = await aliceCrypto.getActiveSessionBackupVersion();
        expect(backupStatus).toBeNull();
@@ -222,8 +524,8 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("megolm-keys backup (%s)", (backe
            });
        });

-        const validCheck = await aliceClient.checkKeyBackup();
-        expect(validCheck?.trustInfo?.usable).toStrictEqual(true);
+        const validCheck = await aliceCrypto.checkKeyBackupAndEnable();
+        expect(validCheck?.trustInfo?.trusted).toStrictEqual(true);

        await backupPromise;

@@ -286,6 +588,128 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("megolm-keys backup (%s)", (backe
        });
    });

+    describe("checkKeyBackupAndEnable", () => {
+        it("enables a backup signed by a trusted device", async () => {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+
+            // tell Alice to trust the dummy device that signed the backup
+            await aliceClient.startClient();
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA);
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+            expect(result!.trustInfo).toEqual({ trusted: true, matchesDecryptionKey: false });
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toEqual(testData.SIGNED_BACKUP_DATA.version);
+        });
+
+        it("does not enable a backup signed by an untrusted device", async () => {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+
+            // download the device list, to match the trusted case
+            await aliceClient.startClient();
+            await waitForDeviceList();
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA);
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+            expect(result!.trustInfo).toEqual({ trusted: false, matchesDecryptionKey: false });
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toBeNull();
+        });
+
+        it("disables backup when a new untrusted backup is available", async () => {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+
+            // tell Alice to trust the dummy device that signed the backup
+            await aliceClient.startClient();
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA);
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toEqual(testData.SIGNED_BACKUP_DATA.version);
+
+            const unsignedBackup = JSON.parse(JSON.stringify(testData.SIGNED_BACKUP_DATA));
+            delete unsignedBackup.auth_data.signatures;
+            unsignedBackup.version = "2";
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", unsignedBackup, {
+                overwriteRoutes: true,
+            });
+
+            await aliceCrypto.checkKeyBackupAndEnable();
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toBeNull();
+        });
+
+        it("switches backup when a new trusted backup is available", async () => {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+
+            // tell Alice to trust the dummy device that signed the backup
+            await aliceClient.startClient();
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA);
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toEqual(testData.SIGNED_BACKUP_DATA.version);
+
+            const newBackupVersion = "2";
+            const newBackup = JSON.parse(JSON.stringify(testData.SIGNED_BACKUP_DATA));
+            newBackup.version = newBackupVersion;
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", newBackup, {
+                overwriteRoutes: true,
+            });
+
+            await aliceCrypto.checkKeyBackupAndEnable();
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toEqual(newBackupVersion);
+        });
+
+        it("Disables when backup is deleted", async () => {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+
+            // tell Alice to trust the dummy device that signed the backup
+            await aliceClient.startClient();
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA);
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toEqual(testData.SIGNED_BACKUP_DATA.version);
+
+            fetchMock.get(
+                "path:/_matrix/client/v3/room_keys/version",
+                {
+                    status: 404,
+                    body: {
+                        errcode: "M_NOT_FOUND",
+                        error: "No backup found",
+                    },
+                },
+                {
+                    overwriteRoutes: true,
+                },
+            );
+            const noResult = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(noResult).toBeNull();
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toBeNull();
+        });
+    });
+
    /** make sure that the client knows about the dummy device */
    async function waitForDeviceList(): Promise<void> {
        // Completing the initial sync will make the device list download outdated device lists (of which our own
@@ -22,7 +22,15 @@ import fetchMock from "fetch-mock-jest";
 import { IDBFactory } from "fake-indexeddb";
 import { createHash } from "crypto";

-import { createClient, CryptoEvent, ICreateClientOpts, MatrixClient } from "../../../src";
+import {
+    createClient,
+    CryptoEvent,
+    IContent,
+    ICreateClientOpts,
+    MatrixClient,
+    MatrixEvent,
+    MatrixEventEvent,
+} from "../../../src";
 import {
    canAcceptVerificationRequest,
    ShowQrCodeCallbacks,
@@ -34,15 +42,20 @@ import {
    VerifierEvent,
 } from "../../../src/crypto-api/verification";
 import { escapeRegExp } from "../../../src/utils";
-import { CRYPTO_BACKENDS, emitPromise, InitCrypto } from "../../test-utils/test-utils";
+import { CRYPTO_BACKENDS, emitPromise, getSyncResponse, InitCrypto, syncPromise } from "../../test-utils/test-utils";
 import { SyncResponder } from "../../test-utils/SyncResponder";
 import {
+    BOB_SIGNED_CROSS_SIGNING_KEYS_DATA,
+    BOB_SIGNED_TEST_DEVICE_DATA,
+    BOB_TEST_USER_ID,
    MASTER_CROSS_SIGNING_PUBLIC_KEY_BASE64,
    SIGNED_CROSS_SIGNING_KEYS_DATA,
    SIGNED_TEST_DEVICE_DATA,
    TEST_DEVICE_ID,
    TEST_DEVICE_PUBLIC_ED25519_KEY_BASE64,
+    TEST_ROOM_ID,
    TEST_USER_ID,
+    BOB_ONE_TIME_KEYS,
 } from "../../test-utils/test-data";
 import { mockInitialApiRequests } from "../../test-utils/mockEndpoints";
 import { E2EKeyResponder } from "../../test-utils/E2EKeyResponder";
@@ -808,6 +821,82 @@ describe.each(Object.entries(CRYPTO_BACKENDS))("verification (%s)", (backend: st
        });
    });

+    describe("Send verification request in DM", () => {
+        beforeEach(async () => {
+            aliceClient = await startTestClient();
+            aliceClient.setGlobalErrorOnUnknownDevices(false);
+
+            e2eKeyResponder.addCrossSigningData(BOB_SIGNED_CROSS_SIGNING_KEYS_DATA);
+            e2eKeyResponder.addDeviceKeys(BOB_SIGNED_TEST_DEVICE_DATA);
+            syncResponder.sendOrQueueSyncResponse(getSyncResponse([BOB_TEST_USER_ID]));
+
+            // Wait for the sync response to be processed
+            await syncPromise(aliceClient);
+        });
+
+        /**
+         * Create a mock to respond when the verification request is sent
+         * Handle both encrypted and unencrypted requests
+         */
+        function awaitRoomMessageRequest(): Promise<IContent> {
+            return new Promise((resolve) => {
+                // Case of unencrypted message of the new crypto
+                fetchMock.put(
+                    "express:/_matrix/client/v3/rooms/:roomId/send/m.room.message/:txId",
+                    (url: string, options: RequestInit) => {
+                        resolve(JSON.parse(options.body as string));
+                        return { event_id: "$YUwRidLecu:example.com" };
+                    },
+                );
+
+                // Case of encrypted message of the old crypto
+                fetchMock.put(
+                    "express:/_matrix/client/v3/rooms/:roomId/send/m.room.encrypted/:txId",
+                    async (url: string, options: RequestInit) => {
+                        const encryptedMessage = JSON.parse(options.body as string);
+                        const event = new MatrixEvent({
+                            content: encryptedMessage,
+                            type: "m.room.encrypted",
+                            room_id: TEST_ROOM_ID,
+                        });
+                        // Try to decrypt the event
+                        event.once(MatrixEventEvent.Decrypted, (decryptedEvent: MatrixEvent, error?: Error) => {
+                            expect(error).not.toBeDefined();
+                            resolve(decryptedEvent.getContent());
+                        });
+                        await aliceClient.decryptEventIfNeeded(event);
+                        return { event_id: "$YUwRidLecu:example.com" };
+                    },
+                );
+            });
+        }
+
+        it("alice sends a verification request in a DM to bob", async () => {
+            fetchMock.post("express:/_matrix/client/v3/keys/claim", () => ({ one_time_keys: BOB_ONE_TIME_KEYS }));
+
+            // In `DeviceList#doQueuedQueries`, the key download response is processed every 5ms
+            // 5ms by users, ie Bob and Alice
+            await jest.advanceTimersByTimeAsync(10);
+
+            const messageRequestPromise = awaitRoomMessageRequest();
+            const verificationRequest = await aliceClient
+                .getCrypto()!
+                .requestVerificationDM(BOB_TEST_USER_ID, TEST_ROOM_ID);
+            const requestContent = await messageRequestPromise;
+
+            expect(requestContent.from_device).toBe(aliceClient.getDeviceId());
+            expect(requestContent.methods.sort()).toStrictEqual(
+                ["m.sas.v1", "m.qr_code.scan.v1", "m.qr_code.show.v1", "m.reciprocate.v1"].sort(),
+            );
+            expect(requestContent.msgtype).toBe("m.key.verification.request");
+            expect(requestContent.to).toBe(BOB_TEST_USER_ID);
+
+            expect(verificationRequest.roomId).toBe(TEST_ROOM_ID);
+            expect(verificationRequest.isSelfVerification).toBe(false);
+            expect(verificationRequest.otherUserId).toBe(BOB_TEST_USER_ID);
+        });
+    });
+
    async function startTestClient(opts: Partial<ICreateClientOpts> = {}): Promise<MatrixClient> {
        const client = createClient({
            baseUrl: TEST_HOMESERVER_URL,
@@ -92,9 +92,7 @@ describe("MatrixClient events", function () {
                                    type: "m.room.create",
                                    room: "!erufh:bar",
                                    user: "@foo:bar",
-                                    content: {
-                                        creator: "@foo:bar",
-                                    },
+                                    content: {},
                                }),
                            ],
                        },
@@ -107,9 +107,7 @@ const INITIAL_SYNC_DATA = {
                        utils.mkEvent({
                            type: "m.room.create",
                            user: userId,
-                            content: {
-                                creator: userId,
-                            },
+                            content: {},
                            event: false,
                        }),
                    ],
@@ -1342,7 +1340,7 @@ describe("MatrixClient event timelines", function () {
        function respondToContext(event: Partial<IEvent> = THREAD_ROOT): ExpectedHttpRequest {
            const request = httpBackend.when(
                "GET",
-                encodeUri("/_matrix/client/r0/rooms/$roomId/context/$eventId", {
+                encodeUri("/_matrix/client/v3/rooms/$roomId/context/$eventId", {
                    $roomId: roomId,
                    $eventId: event.event_id!,
                }),
@@ -1360,7 +1358,7 @@ describe("MatrixClient event timelines", function () {
        function respondToEvent(event: Partial<IEvent> = THREAD_ROOT): ExpectedHttpRequest {
            const request = httpBackend.when(
                "GET",
-                encodeUri("/_matrix/client/r0/rooms/$roomId/event/$eventId", {
+                encodeUri("/_matrix/client/v3/rooms/$roomId/event/$eventId", {
                    $roomId: roomId,
                    $eventId: event.event_id!,
                }),
@@ -1371,7 +1369,7 @@ describe("MatrixClient event timelines", function () {
        function respondToMessagesRequest(): ExpectedHttpRequest {
            const request = httpBackend.when(
                "GET",
-                encodeUri("/_matrix/client/r0/rooms/$roomId/messages", {
+                encodeUri("/_matrix/client/v3/rooms/$roomId/messages", {
                    $roomId: roomId,
                }),
            );
@@ -73,7 +73,7 @@ describe("MatrixClient", function () {

        it("should upload the file", function () {
            httpBackend
-                .when("POST", "/_matrix/media/r0/upload")
+                .when("POST", "/_matrix/media/v3/upload")
                .check(function (req) {
                    expect(req.rawData).toEqual(buf);
                    expect(req.queryParams?.filename).toEqual("hi.txt");
@@ -108,7 +108,7 @@ describe("MatrixClient", function () {

        it("should parse errors into a MatrixError", function () {
            httpBackend
-                .when("POST", "/_matrix/media/r0/upload")
+                .when("POST", "/_matrix/media/v3/upload")
                .check(function (req) {
                    expect(req.rawData).toEqual(buf);
                    // @ts-ignore private property
@@ -708,7 +708,7 @@ describe("MatrixClient", function () {
        const auth = { identifier: 1 };
        it("should pass through an auth dict", function () {
            httpBackend
-                .when("DELETE", "/_matrix/client/r0/devices/my_device")
+                .when("DELETE", "/_matrix/client/v3/devices/my_device")
                .check(function (req) {
                    expect(req.data).toEqual({ auth: auth });
                })
@@ -1102,10 +1102,6 @@ describe("MatrixClient", function () {
                submit_url: "https://foobar.matrix/_matrix/matrix",
            };

-            httpBackend.when("GET", "/_matrix/client/versions").respond(200, {
-                versions: ["r0.6.0"],
-            });
-
            const prom = client.requestRegisterEmailToken("bob@email", "secret", 1);
            httpBackend
                .when("POST", "/register/email/requestToken")
@@ -1126,10 +1122,6 @@ describe("MatrixClient", function () {
        it("should supply an id_access_token", async () => {
            const targetEmail = "gerald@example.org";

-            httpBackend.when("GET", "/_matrix/client/versions").respond(200, {
-                versions: ["r0.6.0"],
-            });
-
            httpBackend
                .when("POST", "/invite")
                .check((req) => {
@@ -1165,10 +1157,6 @@ describe("MatrixClient", function () {
                ],
            };

-            httpBackend.when("GET", "/_matrix/client/versions").respond(200, {
-                versions: ["r0.6.0"],
-            });
-
            httpBackend
                .when("POST", "/createRoom")
                .check((req) => {
@@ -1652,6 +1640,82 @@ describe("MatrixClient", function () {
            ]);
        });
    });
+
+    describe("getFallbackAuthUrl", () => {
+        it("should return fallback url", () => {
+            expect(client.getFallbackAuthUrl("loginType", "authSessionId")).toMatchInlineSnapshot(
+                `"http://alice.localhost.test.server/_matrix/client/v3/auth/loginType/fallback/web?session=authSessionId"`,
+            );
+        });
+    });
+
+    describe("addThreePidOnly", () => {
+        it("should make expected POST request", async () => {
+            httpBackend
+                .when("POST", "/_matrix/client/v3/account/3pid/add")
+                .check(function (req) {
+                    expect(req.data).toEqual({
+                        client_secret: "secret",
+                        sid: "sid",
+                    });
+                    expect(req.headers["Authorization"]).toBe("Bearer " + accessToken);
+                })
+                .respond(200, {});
+
+            await Promise.all([
+                client.addThreePidOnly({
+                    client_secret: "secret",
+                    sid: "sid",
+                }),
+                httpBackend.flushAllExpected(),
+            ]);
+        });
+    });
+
+    describe("bindThreePid", () => {
+        it("should make expected POST request", async () => {
+            httpBackend
+                .when("POST", "/_matrix/client/v3/account/3pid/bind")
+                .check(function (req) {
+                    expect(req.data).toEqual({
+                        client_secret: "secret",
+                        id_server: "server",
+                        id_access_token: "token",
+                        sid: "sid",
+                    });
+                    expect(req.headers["Authorization"]).toBe("Bearer " + accessToken);
+                })
+                .respond(200, {});
+
+            await Promise.all([
+                client.bindThreePid({
+                    client_secret: "secret",
+                    id_server: "server",
+                    id_access_token: "token",
+                    sid: "sid",
+                }),
+                httpBackend.flushAllExpected(),
+            ]);
+        });
+    });
+
+    describe("unbindThreePid", () => {
+        it("should make expected POST request", async () => {
+            httpBackend
+                .when("POST", "/_matrix/client/v3/account/3pid/unbind")
+                .check(function (req) {
+                    expect(req.data).toEqual({
+                        medium: "email",
+                        address: "alice@server.com",
+                        id_server: "identity.localhost",
+                    });
+                    expect(req.headers["Authorization"]).toBe("Bearer " + accessToken);
+                })
+                .respond(200, {});
+
+            await Promise.all([client.unbindThreePid("email", "alice@server.com"), httpBackend.flushAllExpected()]);
+        });
+    });
 });

 function withThreadId(event: MatrixEvent, newThreadId: string): MatrixEvent {
@@ -1925,7 +1989,6 @@ const buildEventCreate = () =>
    new MatrixEvent({
        age: 80126105,
        content: {
-            creator: "@andybalaam-test1:matrix.org",
            room_version: "6",
        },
        event_id: "$e7j2Gt37k5NPwB6lz2N3V9lO5pUdNK8Ai7i2FPEK-oI",
@@ -57,9 +57,7 @@ describe("MatrixClient opts", function () {
                                type: "m.room.create",
                                room: roomId,
                                user: userId,
-                                content: {
-                                    creator: userId,
-                                },
+                                content: {},
                            }),
                        ],
                    },
@@ -85,9 +85,7 @@ describe("MatrixClient room timelines", function () {
                                type: "m.room.create",
                                room: roomId,
                                user: userId,
-                                content: {
-                                    creator: userId,
-                                },
+                                content: {},
                            }),
                        ],
                    },
@@ -224,8 +224,6 @@ describe("MatrixClient syncing", () => {
        });

        it("should honour lazyLoadMembers if user is not a guest", () => {
-            client!.doesServerSupportLazyLoading = jest.fn().mockResolvedValue(true);
-
            httpBackend!
                .when("GET", "/sync")
                .check((req) => {
@@ -242,8 +240,6 @@ describe("MatrixClient syncing", () => {
        it("should not honour lazyLoadMembers if user is a guest", () => {
            httpBackend!.expectedRequests = [];
            httpBackend!.when("GET", "/versions").respond(200, {});
-            client!.doesServerSupportLazyLoading = jest.fn().mockResolvedValue(true);
-
            httpBackend!
                .when("GET", "/sync")
                .check((req) => {
@@ -393,9 +389,7 @@ describe("MatrixClient syncing", () => {
                            type: "m.room.create",
                            room: roomOne,
                            user: selfUserId,
-                            content: {
-                                creator: selfUserId,
-                            },
+                            content: {},
                        }),
                    ],
                },
@@ -581,9 +575,7 @@ describe("MatrixClient syncing", () => {
                                    type: "m.room.create",
                                    room: roomOne,
                                    user: selfUserId,
-                                    content: {
-                                        creator: selfUserId,
-                                    },
+                                    content: {},
                                }),
                            ],
                        },
@@ -615,9 +607,7 @@ describe("MatrixClient syncing", () => {
                                    type: "m.room.create",
                                    room: roomTwo,
                                    user: selfUserId,
-                                    content: {
-                                        creator: selfUserId,
-                                    },
+                                    content: {},
                                }),
                            ],
                        },
@@ -762,7 +752,6 @@ describe("MatrixClient syncing", () => {
                        room: roomOne,
                        user: otherUserId,
                        content: {
-                            creator: otherUserId,
                            room_version: "9",
                        },
                    });
@@ -848,7 +837,6 @@ describe("MatrixClient syncing", () => {
                        room: roomOne,
                        user: otherUserId,
                        content: {
-                            creator: otherUserId,
                            room_version: testMeta.roomVersion,
                        },
                    });
@@ -1376,9 +1364,7 @@ describe("MatrixClient syncing", () => {
                                    type: "m.room.create",
                                    room: roomOne,
                                    user: selfUserId,
-                                    content: {
-                                        creator: selfUserId,
-                                    },
+                                    content: {},
                                }),
                            ],
                        } as Partial<IJoinedRoom>,
@@ -1475,9 +1461,7 @@ describe("MatrixClient syncing", () => {
                                    type: "m.room.create",
                                    room: roomOne,
                                    user: selfUserId,
-                                    content: {
-                                        creator: selfUserId,
-                                    },
+                                    content: {},
                                }),
                            ],
                        },
@@ -1633,9 +1617,7 @@ describe("MatrixClient syncing", () => {
                                        type: "m.room.create",
                                        room: roomId,
                                        user: selfUserId,
-                                        content: {
-                                            creator: selfUserId,
-                                        },
+                                        content: {},
                                    }),
                                ],
                            },
@@ -179,7 +179,6 @@ describe("MatrixClient syncing", () => {
                            events: [
                                {
                                    content: {
-                                        creator: userB,
                                        room_version: "9",
                                    },
                                    origin_server_ts: 1,
@@ -121,7 +121,7 @@ describe("SlidingSyncSdk", () => {
            await client!.initCrypto();
            syncOpts.cryptoCallbacks = syncOpts.crypto = client!.crypto;
        }
-        httpBackend!.when("GET", "/_matrix/client/r0/pushrules").respond(200, {});
+        httpBackend!.when("GET", "/_matrix/client/v3/pushrules").respond(200, {});
        sdk = new SlidingSyncSdk(mockSlidingSync, client, testOpts, syncOpts);
    };

@@ -188,7 +188,7 @@ describe("SlidingSyncSdk", () => {
                [roomA]: {
                    name: "A",
                    required_state: [
-                        mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                        mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                        mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                        mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                        mkOwnStateEvent(EventType.RoomName, { name: "A" }, ""),
@@ -203,7 +203,7 @@ describe("SlidingSyncSdk", () => {
                    name: "B",
                    required_state: [],
                    timeline: [
-                        mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                        mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                        mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                        mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                        mkOwnEvent(EventType.RoomMessage, { body: "hello B" }),
@@ -215,7 +215,7 @@ describe("SlidingSyncSdk", () => {
                    name: "C",
                    required_state: [],
                    timeline: [
-                        mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                        mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                        mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                        mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                        mkOwnEvent(EventType.RoomMessage, { body: "hello C" }),
@@ -228,7 +228,7 @@ describe("SlidingSyncSdk", () => {
                    name: "D",
                    required_state: [],
                    timeline: [
-                        mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                        mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                        mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                        mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                        mkOwnEvent(EventType.RoomMessage, { body: "hello D" }),
@@ -264,7 +264,7 @@ describe("SlidingSyncSdk", () => {
                [roomF]: {
                    name: "#foo:localhost",
                    required_state: [
-                        mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                        mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                        mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                        mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                        mkOwnStateEvent(EventType.RoomCanonicalAlias, { alias: "#foo:localhost" }, ""),
@@ -280,7 +280,7 @@ describe("SlidingSyncSdk", () => {
                    name: "G",
                    required_state: [],
                    timeline: [
-                        mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                        mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                        mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                        mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                    ],
@@ -292,7 +292,7 @@ describe("SlidingSyncSdk", () => {
                    name: "H",
                    required_state: [],
                    timeline: [
-                        mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                        mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                        mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                        mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                        mkOwnEvent(EventType.RoomMessage, { body: "live event" }),
@@ -602,7 +602,7 @@ describe("SlidingSyncSdk", () => {
                name: "Room with Invite",
                required_state: [],
                timeline: [
-                    mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                    mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                    mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                    mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                    mkOwnStateEvent(EventType.RoomMember, { membership: "invite" }, invitee),
@@ -718,7 +718,7 @@ describe("SlidingSyncSdk", () => {
                name: "Room with account data",
                required_state: [],
                timeline: [
-                    mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                    mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                    mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                    mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                    mkOwnEvent(EventType.RoomMessage, { body: "hello" }),
@@ -922,7 +922,7 @@ describe("SlidingSyncSdk", () => {
                name: "Room with typing",
                required_state: [],
                timeline: [
-                    mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                    mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                    mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                    mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                    mkOwnEvent(EventType.RoomMessage, { body: "hello" }),
@@ -963,7 +963,7 @@ describe("SlidingSyncSdk", () => {
                name: "Room with typing",
                required_state: [],
                timeline: [
-                    mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                    mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                    mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                    mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                    mkOwnEvent(EventType.RoomMessage, { body: "hello" }),
@@ -1049,7 +1049,7 @@ describe("SlidingSyncSdk", () => {
                name: "Room with receipts",
                required_state: [],
                timeline: [
-                    mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                    mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                    mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                    mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                    {
@@ -75,8 +75,6 @@ export class E2EKeyReceiver implements IE2EKeyReceiver {
            const listener = (url: string, options: RequestInit) =>
                this.onKeyUploadRequest(resolveOneTimeKeys, options);

-            // catch both r0 and v3 variants
-            fetchMock.post(new URL("/_matrix/client/r0/keys/upload", homeserverUrl).toString(), listener);
            fetchMock.post(new URL("/_matrix/client/v3/keys/upload", homeserverUrl).toString(), listener);
        });
    }
@@ -43,8 +43,6 @@ export class E2EKeyResponder {
    public constructor(homeserverUrl: string) {
        // set up a listener for /keys/query.
        const listener = (url: string, options: RequestInit) => this.onKeyQueryRequest(options);
-        // catch both r0 and v3 variants
-        fetchMock.post(new URL("/_matrix/client/r0/keys/query", homeserverUrl).toString(), listener);
        fetchMock.post(new URL("/_matrix/client/v3/keys/query", homeserverUrl).toString(), listener);
    }

@@ -75,7 +75,7 @@ export class SyncResponder implements ISyncResponder {
     */
    public constructor(homeserverUrl: string) {
        this.debug = debugFunc(`sync-responder:[${homeserverUrl}]`);
-        fetchMock.get("begin:" + new URL("/_matrix/client/r0/sync?", homeserverUrl).toString(), (_url, _options) =>
+        fetchMock.get("begin:" + new URL("/_matrix/client/v3/sync?", homeserverUrl).toString(), (_url, _options) =>
            this.onSyncRequest(),
        );
    }
@@ -86,7 +86,6 @@ export const mockClientMethodsEvents = () => ({
 * Returns basic mocked client methods related to server support
 */
 export const mockClientMethodsServer = (): Partial<Record<MethodLikeKeys<MatrixClient>, unknown>> => ({
-    doesServerSupportSeparateAddAndBind: jest.fn(),
    getIdentityServerUrl: jest.fn(),
    getHomeserverUrl: jest.fn(),
    getCapabilities: jest.fn().mockReturnValue({}),
@@ -16,15 +16,17 @@ limitations under the License.

 import fetchMock from "fetch-mock-jest";

+import { KeyBackupInfo } from "../../src/crypto-api";
+
 /**
 * Mock out the endpoints that the js-sdk calls when we call `MatrixClient.start()`.
 *
 * @param homeserverUrl - the homeserver url for the client under test
 */
 export function mockInitialApiRequests(homeserverUrl: string) {
-    fetchMock.getOnce(new URL("/_matrix/client/versions", homeserverUrl).toString(), { versions: ["r0.5.0"] });
-    fetchMock.getOnce(new URL("/_matrix/client/r0/pushrules/", homeserverUrl).toString(), {});
-    fetchMock.postOnce(new URL("/_matrix/client/r0/user/%40alice%3Alocalhost/filter", homeserverUrl).toString(), {
+    fetchMock.getOnce(new URL("/_matrix/client/versions", homeserverUrl).toString(), { versions: ["v1.1"] });
+    fetchMock.getOnce(new URL("/_matrix/client/v3/pushrules/", homeserverUrl).toString(), {});
+    fetchMock.postOnce(new URL("/_matrix/client/v3/user/%40alice%3Alocalhost/filter", homeserverUrl).toString(), {
        filter_id: "fid",
    });
 }
@@ -32,13 +34,13 @@ export function mockInitialApiRequests(homeserverUrl: string) {
 /**
 * Mock the requests needed to set up cross signing
 *
- * Return 404 error for `GET _matrix/client/r0/user/:userId/account_data/:type` request
+ * Return 404 error for `GET _matrix/client/v3/user/:userId/account_data/:type` request
 * Return `{}` for `POST _matrix/client/v3/keys/signatures/upload` request (named `upload-sigs` for fetchMock check)
 * Return `{}` for `POST /_matrix/client/(unstable|v3)/keys/device_signing/upload` request (named `upload-keys` for fetchMock check)
 */
 export function mockSetupCrossSigningRequests(): void {
    // have account_data requests return an empty object
-    fetchMock.get("express:/_matrix/client/r0/user/:userId/account_data/:type", {
+    fetchMock.get("express:/_matrix/client/v3/user/:userId/account_data/:type", {
        status: 404,
        body: { errcode: "M_NOT_FOUND", error: "Account data not found." },
    });
@@ -56,3 +58,35 @@ export function mockSetupCrossSigningRequests(): void {
        {},
    );
 }
+
+/**
+ * Mock out requests to `/room_keys/version`.
+ *
+ * Returns `404 M_NOT_FOUND` for GET requests until `POST room_keys/version` is called.
+ * Once the POST is done, `GET /room_keys/version` will return the posted backup
+ * instead of 404.
+ *
+ * @param backupVersion - The backup version that will be returned by `POST room_keys/version`.
+ */
+export function mockSetupMegolmBackupRequests(backupVersion: string): void {
+    fetchMock.get("path:/_matrix/client/v3/room_keys/version", {
+        status: 404,
+        body: {
+            errcode: "M_NOT_FOUND",
+            error: "No current backup version",
+        },
+    });
+
+    fetchMock.post("path:/_matrix/client/v3/room_keys/version", (url, request) => {
+        const backupData: KeyBackupInfo = JSON.parse(request.body?.toString() ?? "{}");
+        backupData.version = backupVersion;
+        backupData.count = 0;
+        backupData.etag = "zer";
+        fetchMock.get("path:/_matrix/client/v3/room_keys/version", backupData, {
+            overwriteRoutes: true,
+        });
+        return {
+            version: backupVersion,
+        };
+    });
+}
@@ -30,74 +30,122 @@ import json
 from canonicaljson import encode_canonical_json
 from cryptography.hazmat.primitives.asymmetric import ed25519, x25519
 from cryptography.hazmat.primitives.serialization import Encoding, PublicFormat
+from random import randbytes, seed

-# input data
-TEST_USER_ID = "@alice:localhost"
-TEST_DEVICE_ID = "test_device"
-TEST_ROOM_ID = "!room:id"
-# any 32-byte string can be an ed25519 private key.
-TEST_DEVICE_PRIVATE_KEY_BYTES = b"deadbeefdeadbeefdeadbeefdeadbeef"
+ALICE_DATA = {
+    "TEST_USER_ID": "@alice:localhost",
+    "TEST_DEVICE_ID": "test_device",
+    "TEST_ROOM_ID": "!room:id",
+    # any 32-byte string can be an ed25519 private key.
+    "TEST_DEVICE_PRIVATE_KEY_BYTES": b"deadbeefdeadbeefdeadbeefdeadbeef",

-MASTER_CROSS_SIGNING_PRIVATE_KEY_BYTES = b"doyouspeakwhaaaaaaaaaaaaaaaaaale"
-USER_CROSS_SIGNING_PRIVATE_KEY_BYTES = b"useruseruseruseruseruseruseruser"
-SELF_CROSS_SIGNING_PRIVATE_KEY_BYTES = b"selfselfselfselfselfselfselfself"
+    "MASTER_CROSS_SIGNING_PRIVATE_KEY_BYTES": b"doyouspeakwhaaaaaaaaaaaaaaaaaale",
+    "USER_CROSS_SIGNING_PRIVATE_KEY_BYTES": b"useruseruseruseruseruseruseruser",
+    "SELF_CROSS_SIGNING_PRIVATE_KEY_BYTES": b"selfselfselfselfselfselfselfself",

-# Private key for secure key backup. There are some sessions encrypted with this key in megolm-backup.spec.ts
-B64_BACKUP_DECRYPTION_KEY = "dwdtCnMYpX08FsFyUbJmRd9ML4frwJkqsXf7pR25LCo="
+    # Private key for secure key backup. There are some sessions encrypted with this key in megolm-backup.spec.ts
+    "B64_BACKUP_DECRYPTION_KEY": "dwdtCnMYpX08FsFyUbJmRd9ML4frwJkqsXf7pR25LCo=",
+
+    "OTK": "j3fR3HemM16M7CWhoI4Sk5ZsdmdfQHsKL1xuSft6MSw"
+}
+
+BOB_DATA = {
+    "TEST_USER_ID": "@bob:xyz",
+    "TEST_DEVICE_ID": "bob_device",
+    "TEST_ROOM_ID": "!room:id",
+    # any 32-byte string can be an ed25519 private key.
+    "TEST_DEVICE_PRIVATE_KEY_BYTES": b"Deadbeefdeadbeefdeadbeefdeadbeef",
+
+    "MASTER_CROSS_SIGNING_PRIVATE_KEY_BYTES": b"Doyouspeakwhaaaaaaaaaaaaaaaaaale",
+    "USER_CROSS_SIGNING_PRIVATE_KEY_BYTES": b"Useruseruseruseruseruseruseruser",
+    "SELF_CROSS_SIGNING_PRIVATE_KEY_BYTES": b"Selfselfselfselfselfselfselfself",
+
+    # Private key for secure key backup. There are some sessions encrypted with this key in megolm-backup.spec.ts
+    "B64_BACKUP_DECRYPTION_KEY": "DwdtCnMYpX08FsFyUbJmRd9ML4frwJkqsXf7pR25LCo=",
+
+    "OTK": "j3fR3HemM16M7CWhoI4Sk5ZsdmdfQHsKL1xuSft6MSw"
+}

 def main() -> None:
-    private_key = ed25519.Ed25519PrivateKey.from_private_bytes(
-        TEST_DEVICE_PRIVATE_KEY_BYTES
+    print(
+        f"""\
+/* Test data for cryptography tests
+ *
+ * Do not edit by hand! This file is generated by `./generate-test-data.py`
+ */
+
+import {{ IDeviceKeys, IMegolmSessionData }} from "../../../src/@types/crypto";
+import {{ IDownloadKeyResult }} from "../../../src";
+import {{ KeyBackupInfo }} from "../../../src/crypto-api";
+
+/* eslint-disable comma-dangle */
+
+// Alice data
+
+{build_test_data(ALICE_DATA)}
+// Bob data
+
+{build_test_data(BOB_DATA, "BOB_")}
+""",
+        end="",
    )
+
+# Use static seed to have stable random test data upon new generation
+seed(10)
+
+def build_test_data(user_data, prefix = "") -> str:
+    private_key = ed25519.Ed25519PrivateKey.from_private_bytes(
+             user_data["TEST_DEVICE_PRIVATE_KEY_BYTES"]
+        )
    b64_public_key = encode_base64(
        private_key.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)
    )

    device_data = {
        "algorithms": ["m.olm.v1.curve25519-aes-sha2", "m.megolm.v1.aes-sha2"],
-        "device_id": TEST_DEVICE_ID,
+        "device_id":  user_data["TEST_DEVICE_ID"],
        "keys": {
-            f"curve25519:{TEST_DEVICE_ID}": "F4uCNNlcbRvc7CfBz95ZGWBvY1ALniG1J8+6rhVoKS0",
-            f"ed25519:{TEST_DEVICE_ID}": b64_public_key,
+            f"curve25519:{user_data['TEST_DEVICE_ID']}": "F4uCNNlcbRvc7CfBz95ZGWBvY1ALniG1J8+6rhVoKS0",
+            f"ed25519:{user_data['TEST_DEVICE_ID']}": b64_public_key,
        },
-        "signatures": {TEST_USER_ID: {}},
-        "user_id": TEST_USER_ID,
+        "signatures": {user_data['TEST_USER_ID']: {}},
+        "user_id": user_data["TEST_USER_ID"],
    }

-    device_data["signatures"][TEST_USER_ID][f"ed25519:{TEST_DEVICE_ID}"] = sign_json(
+    device_data["signatures"][user_data["TEST_USER_ID"]][f"ed25519:{user_data['TEST_DEVICE_ID']}"] = sign_json(
        device_data, private_key
    )

    master_private_key = ed25519.Ed25519PrivateKey.from_private_bytes(
-        MASTER_CROSS_SIGNING_PRIVATE_KEY_BYTES
+        user_data["MASTER_CROSS_SIGNING_PRIVATE_KEY_BYTES"]
    )
    b64_master_public_key = encode_base64(
        master_private_key.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)
    )
-    b64_master_private_key = encode_base64(MASTER_CROSS_SIGNING_PRIVATE_KEY_BYTES)
+    b64_master_private_key = encode_base64(user_data["MASTER_CROSS_SIGNING_PRIVATE_KEY_BYTES"])

    self_signing_private_key = ed25519.Ed25519PrivateKey.from_private_bytes(
-        SELF_CROSS_SIGNING_PRIVATE_KEY_BYTES
+        user_data["SELF_CROSS_SIGNING_PRIVATE_KEY_BYTES"]
    )
    b64_self_signing_public_key = encode_base64(
        self_signing_private_key.public_key().public_bytes(
            Encoding.Raw, PublicFormat.Raw
        )
    )
-    b64_self_signing_private_key = encode_base64(SELF_CROSS_SIGNING_PRIVATE_KEY_BYTES)
+    b64_self_signing_private_key = encode_base64( user_data["SELF_CROSS_SIGNING_PRIVATE_KEY_BYTES"])

    user_signing_private_key = ed25519.Ed25519PrivateKey.from_private_bytes(
-        USER_CROSS_SIGNING_PRIVATE_KEY_BYTES
+         user_data["USER_CROSS_SIGNING_PRIVATE_KEY_BYTES"]
    )
    b64_user_signing_public_key = encode_base64(
        user_signing_private_key.public_key().public_bytes(
            Encoding.Raw, PublicFormat.Raw
        )
    )
-    b64_user_signing_private_key = encode_base64(USER_CROSS_SIGNING_PRIVATE_KEY_BYTES)
+    b64_user_signing_private_key = encode_base64(user_data["USER_CROSS_SIGNING_PRIVATE_KEY_BYTES"])

    backup_decryption_key = x25519.X25519PrivateKey.from_private_bytes(
-        base64.b64decode(B64_BACKUP_DECRYPTION_KEY)
+        base64.b64decode(user_data["B64_BACKUP_DECRYPTION_KEY"])
    )
    b64_backup_public_key = encode_base64(
        backup_decryption_key.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)
@@ -113,75 +161,96 @@ def main() -> None:
    # sign with our device key
    sig = sign_json(backup_data["auth_data"], private_key)
    backup_data["auth_data"]["signatures"] = {
-        TEST_USER_ID: {f"ed25519:{TEST_DEVICE_ID}": sig}
+        user_data["TEST_USER_ID"]: {f"ed25519:{user_data['TEST_DEVICE_ID']}": sig}
    }

-    print(
-        f"""\
-/* Test data for cryptography tests
- *
- * Do not edit by hand! This file is generated by `./generate-test-data.py`
- */
+    set_of_exported_room_keys = [build_exported_megolm_key(), build_exported_megolm_key()]

-import {{ IDeviceKeys }} from "../../../src/@types/crypto";
-import {{ IDownloadKeyResult }} from "../../../src";
-import {{ KeyBackupInfo }} from "../../../src/crypto-api";
+    additional_exported_room_key = build_exported_megolm_key()

-/* eslint-disable comma-dangle */
+    otk_to_sign = {
+        "key": user_data['OTK']
+    }
+    # sign our public otk key with our device key
+    otk = sign_json(otk_to_sign, private_key)
+    otks = {
+        user_data["TEST_USER_ID"]: {
+            user_data['TEST_DEVICE_ID']: {
+                 "signed_curve25519:AAAAHQ": {
+                    "key": user_data["OTK"],
+                    "signatures": {
+                        user_data["TEST_USER_ID"]: {f"ed25519:{user_data['TEST_DEVICE_ID']}": otk}
+                    }
+                 }
+            }
+        }
+    }

-export const TEST_USER_ID = "{TEST_USER_ID}";
-export const TEST_DEVICE_ID = "{TEST_DEVICE_ID}";
-export const TEST_ROOM_ID = "{TEST_ROOM_ID}";
+    return f"""\
+export const {prefix}TEST_USER_ID = "{user_data['TEST_USER_ID']}";
+export const {prefix}TEST_DEVICE_ID = "{user_data['TEST_DEVICE_ID']}";
+export const {prefix}TEST_ROOM_ID = "{user_data['TEST_ROOM_ID']}";

 /** The base64-encoded public ed25519 key for this device */
-export const TEST_DEVICE_PUBLIC_ED25519_KEY_BASE64 = "{b64_public_key}";
+export const {prefix}TEST_DEVICE_PUBLIC_ED25519_KEY_BASE64 = "{b64_public_key}";

 /** Signed device data, suitable for returning from a `/keys/query` call */
-export const SIGNED_TEST_DEVICE_DATA: IDeviceKeys = {json.dumps(device_data, indent=4)};
+export const {prefix}SIGNED_TEST_DEVICE_DATA: IDeviceKeys = {json.dumps(device_data, indent=4)};

 /** base64-encoded public master cross-signing key */
-export const MASTER_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "{b64_master_public_key}";
+export const {prefix}MASTER_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "{b64_master_public_key}";

 /** base64-encoded private master cross-signing key */
-export const MASTER_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "{b64_master_private_key}";
+export const {prefix}MASTER_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "{b64_master_private_key}";

 /** base64-encoded public self cross-signing key */
-export const SELF_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "{b64_self_signing_public_key}";
+export const {prefix}SELF_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "{b64_self_signing_public_key}";

 /** base64-encoded private self signing cross-signing key */
-export const SELF_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "{b64_self_signing_private_key}";
+export const {prefix}SELF_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "{b64_self_signing_private_key}";

 /** base64-encoded public user cross-signing key */
-export const USER_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "{b64_user_signing_public_key}";
+export const {prefix}USER_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "{b64_user_signing_public_key}";

 /** base64-encoded private user signing cross-signing key */
-export const USER_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "{b64_user_signing_private_key}";
+export const {prefix}USER_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "{b64_user_signing_private_key}";

 /** Signed cross-signing keys data, also suitable for returning from a `/keys/query` call */
-export const SIGNED_CROSS_SIGNING_KEYS_DATA: Partial<IDownloadKeyResult> = {
-        json.dumps(build_cross_signing_keys_data(), indent=4)
+export const {prefix}SIGNED_CROSS_SIGNING_KEYS_DATA: Partial<IDownloadKeyResult> = {
+        json.dumps(build_cross_signing_keys_data(user_data), indent=4)
 };

 /** base64-encoded backup decryption (private) key */
-export const BACKUP_DECRYPTION_KEY_BASE64 = "{ B64_BACKUP_DECRYPTION_KEY }";
+export const {prefix}BACKUP_DECRYPTION_KEY_BASE64 = "{ user_data['B64_BACKUP_DECRYPTION_KEY'] }";

 /** Signed backup data, suitable for return from `GET /_matrix/client/v3/room_keys/keys/{{roomId}}/{{sessionId}}` */
-export const SIGNED_BACKUP_DATA: KeyBackupInfo = { json.dumps(backup_data, indent=4) };
-""",
-        end="",
-    )
+export const {prefix}SIGNED_BACKUP_DATA: KeyBackupInfo = { json.dumps(backup_data, indent=4) };
+
+/** A set of megolm keys that can be imported via CryptoAPI#importRoomKeys */
+export const {prefix}MEGOLM_SESSION_DATA_ARRAY: IMegolmSessionData[] = {
+    json.dumps(set_of_exported_room_keys, indent=4)
+};
+
+/** An exported megolm session */
+export const {prefix}MEGOLM_SESSION_DATA: IMegolmSessionData = {
+        json.dumps(additional_exported_room_key, indent=4)
+};
+
+/** Signed OTKs, returned by `POST /keys/claim` */
+export const {prefix}ONE_TIME_KEYS = { json.dumps(otks, indent=4) };
+"""


-def build_cross_signing_keys_data() -> dict:
+def build_cross_signing_keys_data(user_data) -> dict:
    """Build the signed cross-signing-keys data for return from /keys/query"""
    master_private_key = ed25519.Ed25519PrivateKey.from_private_bytes(
-        MASTER_CROSS_SIGNING_PRIVATE_KEY_BYTES
+        user_data["MASTER_CROSS_SIGNING_PRIVATE_KEY_BYTES"]
    )
    b64_master_public_key = encode_base64(
        master_private_key.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)
    )
    self_signing_private_key = ed25519.Ed25519PrivateKey.from_private_bytes(
-        SELF_CROSS_SIGNING_PRIVATE_KEY_BYTES
+         user_data["SELF_CROSS_SIGNING_PRIVATE_KEY_BYTES"]
    )
    b64_self_signing_public_key = encode_base64(
        self_signing_private_key.public_key().public_bytes(
@@ -189,7 +258,7 @@ def build_cross_signing_keys_data() -> dict:
        )
    )
    user_signing_private_key = ed25519.Ed25519PrivateKey.from_private_bytes(
-        USER_CROSS_SIGNING_PRIVATE_KEY_BYTES
+         user_data["USER_CROSS_SIGNING_PRIVATE_KEY_BYTES"]
    )
    b64_user_signing_public_key = encode_base64(
        user_signing_private_key.public_key().public_bytes(
@@ -199,39 +268,39 @@ def build_cross_signing_keys_data() -> dict:
    # create without signatures initially
    cross_signing_keys_data = {
        "master_keys": {
-            TEST_USER_ID: {
+             user_data["TEST_USER_ID"]: {
                "keys": {
                    f"ed25519:{b64_master_public_key}": b64_master_public_key,
                },
-                "user_id": TEST_USER_ID,
+                "user_id": user_data["TEST_USER_ID"],
                "usage": ["master"],
            }
        },
        "self_signing_keys": {
-            TEST_USER_ID: {
+            user_data["TEST_USER_ID"]: {
                "keys": {
                    f"ed25519:{b64_self_signing_public_key}": b64_self_signing_public_key,
                },
-                "user_id": TEST_USER_ID,
+                "user_id": user_data["TEST_USER_ID"],
                "usage": ["self_signing"],
            },
        },
        "user_signing_keys": {
-            TEST_USER_ID: {
+            user_data["TEST_USER_ID"]: {
                "keys": {
                    f"ed25519:{b64_user_signing_public_key}": b64_user_signing_public_key,
                },
-                "user_id": TEST_USER_ID,
+                "user_id": user_data["TEST_USER_ID"],
                "usage": ["user_signing"],
            },
        },
    }
    # sign the sub-keys with the master
    for k in ["self_signing_keys", "user_signing_keys"]:
-        to_sign = cross_signing_keys_data[k][TEST_USER_ID]
+        to_sign = cross_signing_keys_data[k][user_data["TEST_USER_ID"]]
        sig = sign_json(to_sign, master_private_key)
        to_sign["signatures"] = {
-            TEST_USER_ID: {f"ed25519:{b64_master_public_key}": sig}
+            user_data["TEST_USER_ID"]: {f"ed25519:{b64_master_public_key}": sig}
        }

    return cross_signing_keys_data
@@ -265,6 +334,39 @@ def sign_json(json_object: dict, private_key: ed25519.Ed25519PrivateKey) -> str:

    return signature_base64

+def build_exported_megolm_key() -> dict:
+    """
+    Creates an exported megolm room key, as per https://gitlab.matrix.org/matrix-org/olm/blob/master/docs/megolm.md#session-export-format
+    that can be imported via importRoomKeys API.
+    """
+    index = 0
+    private_key = ed25519.Ed25519PrivateKey.from_private_bytes(randbytes(32))
+    # Just use radom bytes for the ratchet parts
+    ratchet = randbytes(32 * 4)
+    # exported key, start with version byte
+    exported_key = bytearray(b'\x01')
+    exported_key += index.to_bytes(4, 'big')
+    exported_key += ratchet
+    # KPub
+    exported_key += private_key.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)
+
+
+    megolm_export = {
+        "algorithm": "m.megolm.v1.aes-sha2",
+        "room_id": "!roomA:example.org",
+        "sender_key": "/Bu9e34hUClhddpf4E5gu5qEAdMY31+1A9HbiAeeQgo",
+        "session_id": encode_base64(
+            private_key.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)
+        ),
+        "session_key": encode_base64(exported_key),
+        "sender_claimed_keys": {
+            "ed25519": encode_base64(ed25519.Ed25519PrivateKey.from_private_bytes(randbytes(32)).public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)),
+        },
+        "forwarding_curve25519_key_chain": [],
+    }
+
+    return megolm_export
+

 if __name__ == "__main__":
    main()
@@ -3,12 +3,14 @@
 * Do not edit by hand! This file is generated by `./generate-test-data.py`
 */

-import { IDeviceKeys } from "../../../src/@types/crypto";
+import { IDeviceKeys, IMegolmSessionData } from "../../../src/@types/crypto";
 import { IDownloadKeyResult } from "../../../src";
 import { KeyBackupInfo } from "../../../src/crypto-api";

 /* eslint-disable comma-dangle */

+// Alice data
+
 export const TEST_USER_ID = "@alice:localhost";
 export const TEST_DEVICE_ID = "test_device";
 export const TEST_ROOM_ID = "!room:id";
@@ -116,3 +118,224 @@ export const SIGNED_BACKUP_DATA: KeyBackupInfo = {
        }
    }
 };
+
+/** A set of megolm keys that can be imported via CryptoAPI#importRoomKeys */
+export const MEGOLM_SESSION_DATA_ARRAY: IMegolmSessionData[] = [
+    {
+        "algorithm": "m.megolm.v1.aes-sha2",
+        "room_id": "!roomA:example.org",
+        "sender_key": "/Bu9e34hUClhddpf4E5gu5qEAdMY31+1A9HbiAeeQgo",
+        "session_id": "FYOoKQSwe4d9jhTZ/LQCZFJINjPEqZ7Or4Z08reP92M",
+        "session_key": "AQAAAABZ0jXQOprFfXe41tIFmAtHxflJp4O2hM/vzQQpOazOCFeWSoW5P3Z9Q+voU3eXehMwyP8/hm/Q8xLP6/PmJdy+71se/17kdFwcDGgLxBWfa4ODM9zlI4EjKbNqmiii5loJ7rBhA/XXaw80m0hfU6zTDX/KrO55J0Pt4vJ0LDa3LBWDqCkEsHuHfY4U2fy0AmRSSDYzxKmezq+GdPK3j/dj",
+        "sender_claimed_keys": {
+            "ed25519": "QdgHgdpDgihgovpPzUiThXur1fbErTFh7paFvNKSgN0"
+        },
+        "forwarding_curve25519_key_chain": []
+    },
+    {
+        "algorithm": "m.megolm.v1.aes-sha2",
+        "room_id": "!roomA:example.org",
+        "sender_key": "/Bu9e34hUClhddpf4E5gu5qEAdMY31+1A9HbiAeeQgo",
+        "session_id": "mPYSGA2l1tOQiipEDEVYhDSdTSFh2lDW1qpGKYZRxTc",
+        "session_key": "AQAAAAAHwgkB49BTPAEGTCK6degxUIbl8GPG2ugPRYhNtOpNic63u11+baXFfjDw5fmVfD1gJXpQQjGsqrIYioxrB1xzl7mfb942UHhYdaMQZowpp1fSpJVsxR5TddUU2EWifYD9EQsoz8mY1zqoazm4vUP4v9yxaTcUBj2c6HMJCY0gCJj2EhgNpdbTkIoqRAxFWIQ0nU0hYdpQ1taqRimGUcU3",
+        "sender_claimed_keys": {
+            "ed25519": "IrkbT6H+0urDf6wKDSyVC1fh1t84Vz6T62snni86Cog"
+        },
+        "forwarding_curve25519_key_chain": []
+    }
+];
+
+/** An exported megolm session */
+export const MEGOLM_SESSION_DATA: IMegolmSessionData = {
+    "algorithm": "m.megolm.v1.aes-sha2",
+    "room_id": "!roomA:example.org",
+    "sender_key": "/Bu9e34hUClhddpf4E5gu5qEAdMY31+1A9HbiAeeQgo",
+    "session_id": "ipdI6Zs/7DzFTEhiA2iGaMDfHkIYCleqXT6L+5e1/co",
+    "session_key": "AQAAAABXGO+Z9jlQJhIL6ByhXrv2BwCIxkhh7MXpKLsYmXkJcWrQlirmXmD79ga1zo+I4DCtEZzyGSpDWXBC6G7ez3H4gDMBam1RE3Jm5tc+oTlIri32UkYgSL0kBkcEnttqmIXBlK8tAfJo3cJnlh7F4ltEOAqrdME6dU0zXTkqXmURqYqXSOmbP+w8xUxIYgNohmjA3x5CGApXql0+i/uXtf3K",
+    "sender_claimed_keys": {
+        "ed25519": "Bhbpt6hqMZlSH4sJV7xiEEEiPVeTWz4Vkujl1EMdIPI"
+    },
+    "forwarding_curve25519_key_chain": []
+};
+
+/** Signed OTKs, returned by `POST /keys/claim` */
+export const ONE_TIME_KEYS = {
+    "@alice:localhost": {
+        "test_device": {
+            "signed_curve25519:AAAAHQ": {
+                "key": "j3fR3HemM16M7CWhoI4Sk5ZsdmdfQHsKL1xuSft6MSw",
+                "signatures": {
+                    "@alice:localhost": {
+                        "ed25519:test_device": "25djC6Rk6gIgFBMVawY9X9LnY8XMMziey6lKqL8Q5Bbp7T1vw9uk0RE7eKO2a/jNLcYroO2xRztGhBrKz5sOCQ"
+                    }
+                }
+            }
+        }
+    }
+};
+
+// Bob data
+
+export const BOB_TEST_USER_ID = "@bob:xyz";
+export const BOB_TEST_DEVICE_ID = "bob_device";
+export const BOB_TEST_ROOM_ID = "!room:id";
+
+/** The base64-encoded public ed25519 key for this device */
+export const BOB_TEST_DEVICE_PUBLIC_ED25519_KEY_BASE64 = "jmY0h8QS6Te6gxyjOmMc0eKOqmbAtXpVo4CCWFubk50";
+
+/** Signed device data, suitable for returning from a `/keys/query` call */
+export const BOB_SIGNED_TEST_DEVICE_DATA: IDeviceKeys = {
+    "algorithms": [
+        "m.olm.v1.curve25519-aes-sha2",
+        "m.megolm.v1.aes-sha2"
+    ],
+    "device_id": "bob_device",
+    "keys": {
+        "curve25519:bob_device": "F4uCNNlcbRvc7CfBz95ZGWBvY1ALniG1J8+6rhVoKS0",
+        "ed25519:bob_device": "jmY0h8QS6Te6gxyjOmMc0eKOqmbAtXpVo4CCWFubk50"
+    },
+    "user_id": "@bob:xyz",
+    "signatures": {
+        "@bob:xyz": {
+            "ed25519:bob_device": "4ApBs9jaeGyfdYaWRUdBvQAkDyXjACJ9KJ0xLHMgiFT/1yo6VqPTx2iziKGnrBiGhbtKNxEhDPOvZZkBU73cDQ"
+        }
+    }
+};
+
+/** base64-encoded public master cross-signing key */
+export const BOB_MASTER_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "KKVOHOB2LsW7hFJwqyzXpA+vp7u5+gaMWUJvBS7mjuA";
+
+/** base64-encoded private master cross-signing key */
+export const BOB_MASTER_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "RG95b3VzcGVha3doYWFhYWFhYWFhYWFhYWFhYWFhbGU";
+
+/** base64-encoded public self cross-signing key */
+export const BOB_SELF_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "DaScI3WulBvDjf/d2vdyP5Cgjdypn1c/PSDX23MgN+A";
+
+/** base64-encoded private self signing cross-signing key */
+export const BOB_SELF_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "U2VsZnNlbGZzZWxmc2VsZnNlbGZzZWxmc2VsZnNlbGY";
+
+/** base64-encoded public user cross-signing key */
+export const BOB_USER_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "lXP89FP6zvFH9TSbU1S8uSdAsVawm1NmV6z+Rfr3lEw";
+
+/** base64-encoded private user signing cross-signing key */
+export const BOB_USER_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "VXNlcnVzZXJ1c2VydXNlcnVzZXJ1c2VydXNlcnVzZXI";
+
+/** Signed cross-signing keys data, also suitable for returning from a `/keys/query` call */
+export const BOB_SIGNED_CROSS_SIGNING_KEYS_DATA: Partial<IDownloadKeyResult> = {
+    "master_keys": {
+        "@bob:xyz": {
+            "keys": {
+                "ed25519:KKVOHOB2LsW7hFJwqyzXpA+vp7u5+gaMWUJvBS7mjuA": "KKVOHOB2LsW7hFJwqyzXpA+vp7u5+gaMWUJvBS7mjuA"
+            },
+            "user_id": "@bob:xyz",
+            "usage": [
+                "master"
+            ]
+        }
+    },
+    "self_signing_keys": {
+        "@bob:xyz": {
+            "keys": {
+                "ed25519:DaScI3WulBvDjf/d2vdyP5Cgjdypn1c/PSDX23MgN+A": "DaScI3WulBvDjf/d2vdyP5Cgjdypn1c/PSDX23MgN+A"
+            },
+            "user_id": "@bob:xyz",
+            "usage": [
+                "self_signing"
+            ],
+            "signatures": {
+                "@bob:xyz": {
+                    "ed25519:KKVOHOB2LsW7hFJwqyzXpA+vp7u5+gaMWUJvBS7mjuA": "RxM8iJU6ZkyzQSVtNnXIJMPyEahVsN+fQQTBNKAs+kqySFyXBgchx+8czZaAhJCpXh9gD1nskT4yyFd2eyUXBw"
+                }
+            }
+        }
+    },
+    "user_signing_keys": {
+        "@bob:xyz": {
+            "keys": {
+                "ed25519:lXP89FP6zvFH9TSbU1S8uSdAsVawm1NmV6z+Rfr3lEw": "lXP89FP6zvFH9TSbU1S8uSdAsVawm1NmV6z+Rfr3lEw"
+            },
+            "user_id": "@bob:xyz",
+            "usage": [
+                "user_signing"
+            ],
+            "signatures": {
+                "@bob:xyz": {
+                    "ed25519:KKVOHOB2LsW7hFJwqyzXpA+vp7u5+gaMWUJvBS7mjuA": "jF8fvnPZulrPyh/4E8dNDVBP3iHHl9bRc+rRArVyGzoom+uVrokOck7BN2YmPyCRFZJJx7fgRA1Bveyu+mTVAg"
+                }
+            }
+        }
+    }
+};
+
+/** base64-encoded backup decryption (private) key */
+export const BOB_BACKUP_DECRYPTION_KEY_BASE64 = "DwdtCnMYpX08FsFyUbJmRd9ML4frwJkqsXf7pR25LCo=";
+
+/** Signed backup data, suitable for return from `GET /_matrix/client/v3/room_keys/keys/{roomId}/{sessionId}` */
+export const BOB_SIGNED_BACKUP_DATA: KeyBackupInfo = {
+    "algorithm": "m.megolm_backup.v1.curve25519-aes-sha2",
+    "version": "1",
+    "auth_data": {
+        "public_key": "ZRuVWcWlDuvOwZRygccUCD4Avtnt130800I+WQNwwRY",
+        "signatures": {
+            "@bob:xyz": {
+                "ed25519:bob_device": "lDIMj3VC0WazE2FamGHpmbiqKf9Z4pO4qapZ5TL5BnD3c+dvb+2waOEd6pgay/pmrQ6MW4Eu2KDEpe1fnHc3BA"
+            }
+        }
+    }
+};
+
+/** A set of megolm keys that can be imported via CryptoAPI#importRoomKeys */
+export const BOB_MEGOLM_SESSION_DATA_ARRAY: IMegolmSessionData[] = [
+    {
+        "algorithm": "m.megolm.v1.aes-sha2",
+        "room_id": "!roomA:example.org",
+        "sender_key": "/Bu9e34hUClhddpf4E5gu5qEAdMY31+1A9HbiAeeQgo",
+        "session_id": "X9SK5JceUdvUr9gZkmdfS78qmKztoL60oORJ9JA5XD8",
+        "session_key": "AQAAAADbfOdUj/ec5bK4xVEhhRw+jfd1FD4uA0MLy7NyVHugZxyXNZUx5YEof4H9YyjBretviZreMSXqflbgYKz257rkKu7MPeKFf7zmln2GxX0F/p++GOnvpY1FqOglhfRQi3tqiyOa7SL4f7TuERDTOpMqlWhIfTKQnqy0AyF2vpDi5V/UiuSXHlHb1K/YGZJnX0u/Kpis7aC+tKDkSfSQOVw/",
+        "sender_claimed_keys": {
+            "ed25519": "ZG6lrfATe+958wN1xaGf3dKG/CThEfkmNdp1jcu4zok"
+        },
+        "forwarding_curve25519_key_chain": []
+    },
+    {
+        "algorithm": "m.megolm.v1.aes-sha2",
+        "room_id": "!roomA:example.org",
+        "sender_key": "/Bu9e34hUClhddpf4E5gu5qEAdMY31+1A9HbiAeeQgo",
+        "session_id": "F4P7f1Z0RjbiZMgHk1xBCG3KC4/Ng9PmxLJ4hQ13sHA",
+        "session_key": "AQAAAACv0khqPrQ91MmWCgm0RTzfpn65AGCrRnAKLxGJdfSfECNZ8gyj34FZLwi+F+xC6ibFddcbLXW0mzR6PnTnHF3VHM4g/h+2rcxtlix8fySpIwFzaXViba7cOSy/b+dHTMZB40iA7F4y7AdTdHLv4N1XUj3puU/KVUIKf9/lEDLqyReD+39WdEY24mTIB5NcQQhtyguPzYPT5sSyeIUNd7Bw",
+        "sender_claimed_keys": {
+            "ed25519": "HxUKnGfeUu0fF3cLyCFSDXYtVCQHy/+33q9RkzKfsiU"
+        },
+        "forwarding_curve25519_key_chain": []
+    }
+];
+
+/** An exported megolm session */
+export const BOB_MEGOLM_SESSION_DATA: IMegolmSessionData = {
+    "algorithm": "m.megolm.v1.aes-sha2",
+    "room_id": "!roomA:example.org",
+    "sender_key": "/Bu9e34hUClhddpf4E5gu5qEAdMY31+1A9HbiAeeQgo",
+    "session_id": "OsZMdC1gQ5nPr+L9tuT6xXsaFJkVPkgxP2FexHF1/QM",
+    "session_key": "AQAAAACvcoGk7mOY59fOqZaxFUiTCBRV1Ia94KBjAZx6kgdgBtkkvs50z8od8/Nc9ncK2UsEiXNvCTTp2dlN3du+Rx0/m7vet2ZOEEp2oYDjHMLLFmwd1gtlGuWYPdXA6Y1+9Yyph0/EDVfS+zd3XvbL0QgbyL43+yQnFNHKlxVJX1eiKTrGTHQtYEOZz6/i/bbk+sV7GhSZFT5IMT9hXsRxdf0D",
+    "sender_claimed_keys": {
+        "ed25519": "dV0TIhhkToXpL+gZLo+zXDHJfw7MWYxpg80cynIQDv0"
+    },
+    "forwarding_curve25519_key_chain": []
+};
+
+/** Signed OTKs, returned by `POST /keys/claim` */
+export const BOB_ONE_TIME_KEYS = {
+    "@bob:xyz": {
+        "bob_device": {
+            "signed_curve25519:AAAAHQ": {
+                "key": "j3fR3HemM16M7CWhoI4Sk5ZsdmdfQHsKL1xuSft6MSw",
+                "signatures": {
+                    "@bob:xyz": {
+                        "ed25519:bob_device": "dlZc9VA/hP980Mxvu9qwi0qJx8VK7sADGOM48CE01YM7K/Mbty9lis/QjtQAWqDg371QyynVRjEzt9qj7eSFCg"
+                    }
+                }
+            }
+        }
+    }
+};
+
@@ -18,7 +18,7 @@ limitations under the License.
 import fetchMock from "fetch-mock-jest";
 import MockHttpBackend from "matrix-mock-request";

-import { M_AUTHENTICATION } from "../../src";
+import { AutoDiscoveryAction, M_AUTHENTICATION } from "../../src";
 import { AutoDiscovery } from "../../src/autodiscovery";
 import { OidcError } from "../../src/oidc/error";
 import { makeDelegatedAuthConfig } from "../test-utils/oidc";
@@ -351,7 +351,7 @@ describe("AutoDiscovery", function () {
        function () {
            const httpBackend = getHttpBackend();
            httpBackend.when("GET", "/_matrix/client/versions").respond(200, {
-                not_matrix_versions: ["r0.0.1"],
+                not_matrix_versions: ["v1.1"],
            });
            httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
                "m.homeserver": {
@@ -388,7 +388,7 @@ describe("AutoDiscovery", function () {
                expect(req.path).toEqual("https://example.org/_matrix/client/versions");
            })
            .respond(200, {
-                versions: ["r0.0.1"],
+                versions: ["v1.1"],
            });
        httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
            "m.homeserver": {
@@ -428,7 +428,7 @@ describe("AutoDiscovery", function () {
                expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
            })
            .respond(200, {
-                versions: ["r0.0.1"],
+                versions: ["v1.1"],
            });
        httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
            "m.homeserver": {
@@ -469,7 +469,7 @@ describe("AutoDiscovery", function () {
                expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
            })
            .respond(200, {
-                versions: ["r0.0.1"],
+                versions: ["v1.1"],
            });
        httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
            "m.homeserver": {
@@ -515,7 +515,7 @@ describe("AutoDiscovery", function () {
                    expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
                })
                .respond(200, {
-                    versions: ["r0.0.1"],
+                    versions: ["v1.1"],
                });
            httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
                "m.homeserver": {
@@ -560,7 +560,7 @@ describe("AutoDiscovery", function () {
                    expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
                })
                .respond(200, {
-                    versions: ["r0.0.1"],
+                    versions: ["v1.1"],
                });
            httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
                "m.homeserver": {
@@ -606,7 +606,7 @@ describe("AutoDiscovery", function () {
                    expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
                })
                .respond(200, {
-                    versions: ["r0.0.1"],
+                    versions: ["v1.1"],
                });
            httpBackend.when("GET", "/_matrix/identity/v2").respond(404, {});
            httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
@@ -653,7 +653,7 @@ describe("AutoDiscovery", function () {
                    expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
                })
                .respond(200, {
-                    versions: ["r0.0.1"],
+                    versions: ["v1.1"],
                });
            httpBackend.when("GET", "/_matrix/identity/v2").respond(500, {});
            httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
@@ -697,7 +697,7 @@ describe("AutoDiscovery", function () {
                expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
            })
            .respond(200, {
-                versions: ["r0.0.1"],
+                versions: ["v1.1"],
            });
        httpBackend
            .when("GET", "/_matrix/identity/v2")
@@ -747,7 +747,7 @@ describe("AutoDiscovery", function () {
                expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
            })
            .respond(200, {
-                versions: ["r0.0.1"],
+                versions: ["v1.1"],
            });
        httpBackend
            .when("GET", "/_matrix/identity/v2")
@@ -867,6 +867,37 @@ describe("AutoDiscovery", function () {
        ]);
    });

+    it("should FAIL_ERROR for unsupported Matrix version", () => {
+        const httpBackend = getHttpBackend();
+        httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
+            "m.homeserver": {
+                base_url: "https://example.org",
+            },
+        });
+        httpBackend.when("GET", "/_matrix/client/versions").respond(200, {
+            versions: ["r0.6.0"],
+        });
+        return Promise.all([
+            httpBackend.flushAllExpected(),
+            AutoDiscovery.findClientConfig("example.org").then((conf) => {
+                const expected = {
+                    "m.homeserver": {
+                        state: AutoDiscoveryAction.FAIL_ERROR,
+                        error: AutoDiscovery.ERROR_HOMESERVER_TOO_OLD,
+                        base_url: "https://example.org",
+                    },
+                    "m.identity_server": {
+                        state: "PROMPT",
+                        error: null,
+                        base_url: null,
+                    },
+                };
+
+                expect(conf).toEqual(expected);
+            }),
+        ]);
+    });
+
    describe("m.authentication", () => {
        const homeserverName = "example.org";
        const homeserverUrl = "https://chat.example.org/";
@@ -879,7 +910,7 @@ describe("AutoDiscovery", function () {

        beforeEach(() => {
            fetchMock.resetBehavior();
-            fetchMock.get(`${homeserverUrl}_matrix/client/versions`, { versions: ["r0.0.1"] });
+            fetchMock.get(`${homeserverUrl}_matrix/client/versions`, { versions: ["v1.1"] });

            fetchMock.get("https://example.org/.well-known/matrix/client", {
                "m.homeserver": {
@@ -33,7 +33,7 @@ describe("ContentRepo", function () {
        it("should return a download URL if no width/height/resize are specified", function () {
            const mxcUri = "mxc://server.name/resourceid";
            expect(getHttpUriForMxc(baseUrl, mxcUri)).toEqual(
-                baseUrl + "/_matrix/media/r0/download/server.name/resourceid",
+                baseUrl + "/_matrix/media/v3/download/server.name/resourceid",
            );
        });

@@ -44,21 +44,21 @@ describe("ContentRepo", function () {
        it("should return a thumbnail URL if a width/height/resize is specified", function () {
            const mxcUri = "mxc://server.name/resourceid";
            expect(getHttpUriForMxc(baseUrl, mxcUri, 32, 64, "crop")).toEqual(
-                baseUrl + "/_matrix/media/r0/thumbnail/server.name/resourceid" + "?width=32&height=64&method=crop",
+                baseUrl + "/_matrix/media/v3/thumbnail/server.name/resourceid" + "?width=32&height=64&method=crop",
            );
        });

        it("should put fragments from mxc:// URIs after any query parameters", function () {
            const mxcUri = "mxc://server.name/resourceid#automade";
            expect(getHttpUriForMxc(baseUrl, mxcUri, 32)).toEqual(
-                baseUrl + "/_matrix/media/r0/thumbnail/server.name/resourceid" + "?width=32#automade",
+                baseUrl + "/_matrix/media/v3/thumbnail/server.name/resourceid" + "?width=32#automade",
            );
        });

        it("should put fragments from mxc:// URIs at the end of the HTTP URI", function () {
            const mxcUri = "mxc://server.name/resourceid#automade";
            expect(getHttpUriForMxc(baseUrl, mxcUri)).toEqual(
-                baseUrl + "/_matrix/media/r0/download/server.name/resourceid#automade",
+                baseUrl + "/_matrix/media/v3/download/server.name/resourceid#automade",
            );
        });
    });
@@ -312,6 +312,7 @@ describe("Secrets", function () {
                this.emit(ClientEvent.AccountData, event);
                return {};
            };
+            bob.getKeyBackupVersion = jest.fn().mockResolvedValue(null);

            await bob.bootstrapCrossSigning({
                authUploadDeviceSigningKeys: async (func) => {
@@ -6,6 +6,6 @@ exports[`MatrixHttpApi should return expected object from \`getContentUri\` 1`]
  "params": {
    "access_token": "token",
  },
-  "path": "/_matrix/media/r0/upload",
+  "path": "/_matrix/media/v3/upload",
 }
 `;
@@ -84,7 +84,7 @@ describe("MatrixHttpApi", () => {
        upload = api.uploadContent({} as File);
        expect(xhr.open).toHaveBeenCalledWith(
            Method.Post,
-            baseUrl.toLowerCase() + "/_matrix/media/r0/upload?access_token=token",
+            baseUrl.toLowerCase() + "/_matrix/media/v3/upload?access_token=token",
        );
        expect(xhr.setRequestHeader).not.toHaveBeenCalledWith("Authorization");
    });
@@ -96,7 +96,7 @@ describe("MatrixHttpApi", () => {
            accessToken: "token",
        });
        upload = api.uploadContent({} as File);
-        expect(xhr.open).toHaveBeenCalledWith(Method.Post, baseUrl.toLowerCase() + "/_matrix/media/r0/upload");
+        expect(xhr.open).toHaveBeenCalledWith(Method.Post, baseUrl.toLowerCase() + "/_matrix/media/v3/upload");
        expect(xhr.setRequestHeader).toHaveBeenCalledWith("Authorization", "Bearer token");
    });

@@ -105,14 +105,14 @@ describe("MatrixHttpApi", () => {
        upload = api.uploadContent({} as File, { name: "name" });
        expect(xhr.open).toHaveBeenCalledWith(
            Method.Post,
-            baseUrl.toLowerCase() + "/_matrix/media/r0/upload?filename=name",
+            baseUrl.toLowerCase() + "/_matrix/media/v3/upload?filename=name",
        );
    });

    it("should allow not sending the filename", () => {
        const api = new MatrixHttpApi(new TypedEventEmitter<any, any>(), { baseUrl, prefix });
        upload = api.uploadContent({} as File, { name: "name", includeFilename: false });
-        expect(xhr.open).toHaveBeenCalledWith(Method.Post, baseUrl.toLowerCase() + "/_matrix/media/r0/upload");
+        expect(xhr.open).toHaveBeenCalledWith(Method.Post, baseUrl.toLowerCase() + "/_matrix/media/v3/upload");
    });

    it("should abort xhr when the upload is aborted", () => {
@@ -201,7 +201,7 @@ describe("MatrixClient", function () {
        if (path === KEEP_ALIVE_PATH && acceptKeepalives) {
            return Promise.resolve({
                unstable_features: unstableFeatures,
-                versions: ["r0.6.0", "r0.6.1"],
+                versions: ["v1.1"],
            });
        }
        const next = httpLookups.shift();
@@ -2266,7 +2266,6 @@ describe("MatrixClient", function () {
        function roomCreateEvent(newRoomId: string, predecessorRoomId: string): MatrixEvent {
            return new MatrixEvent({
                content: {
-                    "creator": "@daryl:alexandria.example.com",
                    "m.federate": true,
                    "predecessor": {
                        event_id: "id_of_last_event",
@@ -195,7 +195,7 @@ describe.each([[StoreType.Memory], [StoreType.IndexedDB]])("queueToDevice (%s st

    it("retries on retryImmediately()", async function () {
        httpBackend.when("GET", "/_matrix/client/versions").respond(200, {
-            versions: ["r0.0.1"],
+            versions: ["v1.1"],
        });

        await Promise.all([client.startClient(), httpBackend.flush(undefined, 1, 20)]);
@@ -219,7 +219,7 @@ describe.each([[StoreType.Memory], [StoreType.IndexedDB]])("queueToDevice (%s st

    it("retries on when client is started", async function () {
        httpBackend.when("GET", "/_matrix/client/versions").respond(200, {
-            versions: ["r0.0.1"],
+            versions: ["v1.1"],
        });

        await Promise.all([client.startClient(), httpBackend.flush("/_matrix/client/versions", 1, 20)]);
@@ -243,7 +243,7 @@ describe.each([[StoreType.Memory], [StoreType.IndexedDB]])("queueToDevice (%s st

    it("retries when a message is retried", async function () {
        httpBackend.when("GET", "/_matrix/client/versions").respond(200, {
-            versions: ["r0.0.1"],
+            versions: ["v1.1"],
        });

        await Promise.all([client.startClient(), httpBackend.flush(undefined, 1, 20)]);
@@ -70,9 +70,7 @@ describe("RoomState", function () {
                user: userA,
                room: roomId,
                event: true,
-                content: {
-                    creator: userA,
-                },
+                content: {},
            }),
        ]);
    });
@@ -228,7 +228,7 @@ describe("Room", function () {
    });

    describe("getCreator", () => {
-        it("should return the creator from m.room.create", function () {
+        it("should return the sender from m.room.create", function () {
            // @ts-ignore - mocked doesn't handle overloads sanely
            mocked(room.currentState.getStateEvents).mockImplementation(function (type, key) {
                if (type === EventType.RoomCreate && key === "") {
@@ -239,7 +239,7 @@ describe("Room", function () {
                        room: roomId,
                        user: userA,
                        content: {
-                            creator: userA,
+                            creator: userB, // The creator field was dropped in room version 11 but a malicious client might still send it
                        },
                    });
                }
@@ -247,6 +247,24 @@ describe("Room", function () {
            const roomCreator = room.getCreator();
            expect(roomCreator).toStrictEqual(userA);
        });
+
+        it("should return null if the sender is undefined", function () {
+            // @ts-ignore - mocked doesn't handle overloads sanely
+            mocked(room.currentState.getStateEvents).mockImplementation(function (type, key) {
+                if (type === EventType.RoomCreate && key === "") {
+                    return utils.mkEvent({
+                        event: true,
+                        type: EventType.RoomCreate,
+                        skey: "",
+                        room: roomId,
+                        user: undefined,
+                        content: {},
+                    });
+                }
+            });
+            const roomCreator = room.getCreator();
+            expect(roomCreator).toBeNull();
+        });
    });

    describe("getAvatarUrl", function () {
@@ -1184,6 +1202,21 @@ describe("Room", function () {
                room.recalculate();
                expect(room.name).toEqual("Empty room");
            });
+
+            it("emits an update event", function () {
+                const spy = jest.fn();
+                const summary = {
+                    "m.heroes": [],
+                    "m.invited_member_count": 1,
+                };
+
+                room.once(RoomEvent.Summary, spy);
+
+                room.setSummary(summary);
+                room.recalculate();
+
+                expect(spy).toHaveBeenCalledWith(summary);
+            });
        });

        describe("Room.recalculate => Room Name", function () {
@@ -3471,12 +3504,10 @@ describe("Room", function () {

        function roomCreateEvent(newRoomId: string, predecessorRoomId: string | null): MatrixEvent {
            const content: {
-                creator: string;
                ["m.federate"]: boolean;
                room_version: string;
                predecessor: { event_id: string; room_id: string } | undefined;
            } = {
-                "creator": "@daryl:alexandria.example.com",
                "predecessor": undefined,
                "m.federate": true,
                "room_version": "9",
@@ -29,8 +29,9 @@ import {
 } from "@matrix-org/matrix-sdk-crypto-wasm";

 import { TypedEventEmitter } from "../../../src/models/typed-event-emitter";
-import { HttpApiEvent, HttpApiEventHandlerMap, MatrixHttpApi, UIAuthCallback } from "../../../src";
+import { HttpApiEvent, HttpApiEventHandlerMap, IHttpOpts, MatrixHttpApi, UIAuthCallback } from "../../../src";
 import { OutgoingRequestProcessor } from "../../../src/rust-crypto/OutgoingRequestProcessor";
+import { defer } from "../../../src/utils";

 describe("OutgoingRequestProcessor", () => {
    /** the OutgoingRequestProcessor implementation under test */
@@ -161,7 +162,7 @@ describe("OutgoingRequestProcessor", () => {
            .when("PUT", "/_matrix")
            .check((req) => {
                expect(req.path).toEqual(
-                    "https://example.com/_matrix/client/v3/room/test%2Froom/send/test%2Ftype/test%2Ftxnid",
+                    "https://example.com/_matrix/client/v3/rooms/test%2Froom/send/test%2Ftype/test%2Ftxnid",
                );
                expect(req.rawData).toEqual(testBody);
                expect(req.headers["Accept"]).toEqual("application/json");
@@ -218,4 +219,40 @@ describe("OutgoingRequestProcessor", () => {
        await Promise.all([processor.makeOutgoingRequest(outgoingRequest), markSentCallPromise]);
        expect(olmMachine.markRequestAsSent).toHaveBeenCalledWith("5678", 987, "");
    });
+
+    it("does not explode if the OlmMachine is stopped while the request is in flight", async () => {
+        // we use a real olm machine for this test
+        const olmMachine = await RustSdkCryptoJs.OlmMachine.initialize(
+            new RustSdkCryptoJs.UserId("@alice:example.com"),
+            new RustSdkCryptoJs.DeviceId("TEST_DEVICE"),
+        );
+
+        const authRequestResultDefer = defer<string>();
+
+        const authRequestCalledPromise = new Promise<void>((resolve) => {
+            const mockHttpApi = {
+                authedRequest: async () => {
+                    resolve();
+                    return await authRequestResultDefer.promise;
+                },
+            } as unknown as Mocked<MatrixHttpApi<IHttpOpts & { onlyData: true }>>;
+            processor = new OutgoingRequestProcessor(olmMachine, mockHttpApi);
+        });
+
+        // build a request
+        const request = olmMachine.queryKeysForUsers([new RustSdkCryptoJs.UserId("@bob:example.com")]);
+        const result = processor.makeOutgoingRequest(request);
+
+        // wait for the HTTP request to be made
+        await authRequestCalledPromise;
+
+        // while the HTTP request is in flight, the OlmMachine gets stopped.
+        olmMachine.close();
+
+        // the HTTP request completes...
+        authRequestResultDefer.resolve("{}");
+
+        // ... and `makeOutgoingRequest` resolves satisfactorily
+        await result;
+    });
 });
@@ -61,32 +61,7 @@ describe("RustCrypto", () => {
        );

        it("should import and export keys", async () => {
-            const someRoomKeys = [
-                {
-                    algorithm: "m.megolm.v1.aes-sha2",
-                    room_id: "!cLDYAnjpiQXIrSwngM:localhost:8480",
-                    sender_key: "C9FMqTD20C0VaGWE/aSImkimuE6HDa/RyYj5gRUg3gY",
-                    session_id: "iGQG5GaP1/B3dSH6zCQDQqrNuotrtQjVC7w1OsUDwbg",
-                    session_key:
-                        "AQAAAADaCbP2gdOy8jrhikjploKgSBaFSJ5rvHcziaADbwNEzeCSrfuAUlXvCvxik8kU+MfCHIi5arN2M7UM5rGKdzkHnkReoIByFkeMdbjKWk5SFpVQexcM74eDhBGj+ICkQqOgApfnEbSswrmreB0+MhHHyLStwW5fy5f8A9QW1sbPuohkBuRmj9fwd3Uh+swkA0KqzbqLa7UI1Qu8NTrFA8G4",
-                    sender_claimed_keys: {
-                        ed25519: "RSq0Xw0RR0DeqlJ/j3qrF5qbN0D96fKk8lz9kZJlG9k",
-                    },
-                    forwarding_curve25519_key_chain: [],
-                },
-                {
-                    algorithm: "m.megolm.v1.aes-sha2",
-                    room_id: "!cLDYAnjpiQXIrSwngM:localhost:8480",
-                    sender_key: "C9FMqTD20C0VaGWE/aSImkimuE6HDa/RyYj5gRUg3gY",
-                    session_id: "P/Jy9Tog4CMtLseeS4Fe2AEXZov3k6cibcop/uyhr78",
-                    session_key:
-                        "AQAAAAATyAVm0c9c9DW9Od72MxvfSDYoysBw3C6yMJ3bYuTmssHN7yNGm59KCtKeFp2Y5qO7lvUmwOfSTvTASUb7HViE7Lt+Bvp5WiMTJ2Pv6m+N12ihyowV5lgtKFWI18Wxd0AugMTVQRwjBK6aMobf86NXWD2hiKm3N6kWbC0PXmqV7T/ycvU6IOAjLS7HnkuBXtgBF2aL95OnIm3KKf7soa+/",
-                    sender_claimed_keys: {
-                        ed25519: "RSq0Xw0RR0DeqlJ/j3qrF5qbN0D96fKk8lz9kZJlG9k",
-                    },
-                    forwarding_curve25519_key_chain: [],
-                },
-            ];
+            const someRoomKeys = testData.MEGOLM_SESSION_DATA_ARRAY;
            let importTotal = 0;
            const opt: ImportRoomKeysOpts = {
                progressCallback: (stage) => {
@@ -95,11 +70,11 @@ describe("RustCrypto", () => {
            };
            await rustCrypto.importRoomKeys(someRoomKeys, opt);

-            expect(importTotal).toBe(2);
+            expect(importTotal).toBe(someRoomKeys.length);

            const keys = await rustCrypto.exportRoomKeys();
            expect(Array.isArray(keys)).toBeTruthy();
-            expect(keys.length).toBe(2);
+            expect(keys.length).toBe(someRoomKeys.length);

            const aSession = someRoomKeys[0];

@@ -175,6 +150,44 @@ describe("RustCrypto", () => {
        await expect(rustCrypto.getCrossSigningKeyId()).resolves.toBe(null);
    });

+    describe("getCrossSigningStatus", () => {
+        it("returns sensible values on a default client", async () => {
+            const secretStorage = {
+                isStored: jest.fn().mockResolvedValue(null),
+            } as unknown as Mocked<ServerSideSecretStorage>;
+            const rustCrypto = await makeTestRustCrypto(undefined, undefined, undefined, secretStorage);
+
+            const result = await rustCrypto.getCrossSigningStatus();
+
+            expect(secretStorage.isStored).toHaveBeenCalledWith("m.cross_signing.master");
+            expect(result).toEqual({
+                privateKeysCachedLocally: {
+                    masterKey: false,
+                    selfSigningKey: false,
+                    userSigningKey: false,
+                },
+                privateKeysInSecretStorage: false,
+                publicKeysOnDevice: false,
+            });
+        });
+
+        it("throws if `stop` is called mid-call", async () => {
+            const secretStorage = {
+                isStored: jest.fn().mockResolvedValue(null),
+            } as unknown as Mocked<ServerSideSecretStorage>;
+            const rustCrypto = await makeTestRustCrypto(undefined, undefined, undefined, secretStorage);
+
+            // start the call off
+            const result = rustCrypto.getCrossSigningStatus();
+
+            // call `.stop`
+            rustCrypto.stop();
+
+            // getCrossSigningStatus should abort
+            await expect(result).rejects.toEqual(new Error("MatrixClient has been stopped"));
+        });
+    });
+
    it("bootstrapCrossSigning delegates to CrossSigningIdentity", async () => {
        const rustCrypto = await makeTestRustCrypto();
        const mockCrossSigningIdentity = {
@@ -485,6 +498,23 @@ describe("RustCrypto", () => {

            await expect(rustCrypto.userHasCrossSigningKeys()).resolves.toBe(true);
        });
+
+        it("returns true if the user is untracked, downloadUncached is set at true and the cross-signing keys are available", async () => {
+            fetchMock.post("path:/_matrix/client/v3/keys/query", {
+                device_keys: {
+                    [testData.BOB_TEST_USER_ID]: {
+                        [testData.BOB_TEST_DEVICE_ID]: testData.BOB_SIGNED_TEST_DEVICE_DATA,
+                    },
+                },
+                ...testData.BOB_SIGNED_CROSS_SIGNING_KEYS_DATA,
+            });
+
+            await expect(rustCrypto.userHasCrossSigningKeys(testData.BOB_TEST_USER_ID, true)).resolves.toBe(true);
+        });
+
+        it("returns false if the user is unknown", async () => {
+            await expect(rustCrypto.userHasCrossSigningKeys(testData.BOB_TEST_USER_ID)).resolves.toBe(false);
+        });
    });

    describe("createRecoveryKeyFromPassphrase", () => {
@@ -585,6 +615,52 @@ describe("RustCrypto", () => {
            );
        });
    });
+
+    describe("requestVerificationDM", () => {
+        it("send verification request to an unknown user", async () => {
+            const rustCrypto = await makeTestRustCrypto();
+            await expect(() =>
+                rustCrypto.requestVerificationDM("@bob:example.com", testData.TEST_ROOM_ID),
+            ).rejects.toThrow("unknown userId @bob:example.com");
+        });
+    });
+
+    describe("getUserVerificationStatus", () => {
+        let rustCrypto: RustCrypto;
+        let olmMachine: Mocked<RustSdkCryptoJs.OlmMachine>;
+
+        beforeEach(() => {
+            olmMachine = {
+                getIdentity: jest.fn(),
+            } as unknown as Mocked<RustSdkCryptoJs.OlmMachine>;
+            rustCrypto = new RustCrypto(
+                olmMachine,
+                {} as MatrixClient["http"],
+                TEST_USER,
+                TEST_DEVICE_ID,
+                {} as ServerSideSecretStorage,
+                {} as CryptoCallbacks,
+            );
+        });
+
+        it("returns an unverified UserVerificationStatus when there is no UserIdentity", async () => {
+            const userVerificationStatus = await rustCrypto.getUserVerificationStatus(testData.TEST_USER_ID);
+            expect(userVerificationStatus.isVerified()).toBeFalsy();
+            expect(userVerificationStatus.isTofu()).toBeFalsy();
+            expect(userVerificationStatus.isCrossSigningVerified()).toBeFalsy();
+            expect(userVerificationStatus.wasCrossSigningVerified()).toBeFalsy();
+        });
+
+        it("returns a verified UserVerificationStatus when the UserIdentity is verified", async () => {
+            olmMachine.getIdentity.mockResolvedValue({ isVerified: jest.fn().mockReturnValue(true) });
+
+            const userVerificationStatus = await rustCrypto.getUserVerificationStatus(testData.TEST_USER_ID);
+            expect(userVerificationStatus.isVerified()).toBeTruthy();
+            expect(userVerificationStatus.isTofu()).toBeFalsy();
+            expect(userVerificationStatus.isCrossSigningVerified()).toBeTruthy();
+            expect(userVerificationStatus.wasCrossSigningVerified()).toBeFalsy();
+        });
+    });
 });

 /** build a basic RustCrypto instance for testing
@@ -17,8 +17,9 @@ limitations under the License.
 import * as RustSdkCryptoJs from "@matrix-org/matrix-sdk-crypto-wasm";
 import { Mocked } from "jest-mock";

-import { RustVerificationRequest } from "../../../src/rust-crypto/verification";
+import { isVerificationEvent, RustVerificationRequest } from "../../../src/rust-crypto/verification";
 import { OutgoingRequestProcessor } from "../../../src/rust-crypto/OutgoingRequestProcessor";
+import { EventType, MatrixEvent, MsgType } from "../../../src";

 describe("VerificationRequest", () => {
    describe("pending", () => {
@@ -80,6 +81,40 @@ describe("VerificationRequest", () => {
    });
 });

+describe("isVerificationEvent", () => {
+    it.each([
+        [EventType.KeyVerificationCancel],
+        [EventType.KeyVerificationDone],
+        [EventType.KeyVerificationMac],
+        [EventType.KeyVerificationStart],
+        [EventType.KeyVerificationKey],
+        [EventType.KeyVerificationReady],
+        [EventType.KeyVerificationAccept],
+    ])("should return true with %s event", (eventType) => {
+        const event = new MatrixEvent({
+            type: eventType,
+        });
+        expect(isVerificationEvent(event)).toBe(true);
+    });
+
+    it("should return true with EventType.RoomMessage and MsgType.KeyVerificationRequest", () => {
+        const event = new MatrixEvent({
+            type: EventType.RoomMessage,
+            content: {
+                msgtype: MsgType.KeyVerificationRequest,
+            },
+        });
+        expect(isVerificationEvent(event)).toBe(true);
+    });
+
+    it("should return false with a non verification event", () => {
+        const event = new MatrixEvent({
+            type: EventType.RoomName,
+        });
+        expect(isVerificationEvent(event)).toBe(false);
+    });
+});
+
 /** build a RustVerificationRequest with default parameters */
 function makeTestRequest(
    inner?: RustSdkCryptoJs.VerificationRequest,
@@ -47,6 +47,7 @@ import {
 } from "../../test-utils/webrtc";
 import { CallFeed } from "../../../src/webrtc/callFeed";
 import { EventType, IContent, ISendEventResponse, MatrixEvent, Room } from "../../../src";
+import { emitPromise } from "../../test-utils/test-utils";

 const FAKE_ROOM_ID = "!foo:bar";
 const CALL_LIFETIME = 60000;
@@ -1812,4 +1813,30 @@ describe("Call", function () {
            expect(call.peerConn?.setRemoteDescription).toHaveBeenCalled();
        });
    });
+
+    it("should emit IceFailed error on the successor call if RTCPeerConnection throws", async () => {
+        // @ts-ignore - writing to window as we are simulating browser edge-cases
+        global.window = {};
+        Object.defineProperty(global.window, "RTCPeerConnection", {
+            get: () => {
+                throw Error("Secure mode, naaah!");
+            },
+        });
+
+        const call = new MatrixCall({
+            client: client.client,
+            roomId: "!room_id",
+        });
+        const successor = new MatrixCall({
+            client: client.client,
+            roomId: "!room_id",
+        });
+        call.replacedBy(successor);
+
+        const prom = emitPromise(successor, CallEvent.Error);
+        call.placeCall(true, true);
+
+        const err = await prom;
+        expect(err.code).toBe(CallErrorCode.IceFailed);
+    });
 });
@@ -14,7 +14,6 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */

-import type { IClearEvent } from "../models/event";
 import type { ISignatures } from "./signed";

 export type OlmGroupSessionExtraData = {
@@ -22,33 +21,8 @@ export type OlmGroupSessionExtraData = {
    sharedHistory?: boolean;
 };

-/**
- * The result of a (successful) call to {@link Crypto.decryptEvent}
- */
-export interface IEventDecryptionResult {
-    /**
-     * The plaintext payload for the event (typically containing <tt>type</tt> and <tt>content</tt> fields).
-     */
-    clearEvent: IClearEvent;
-    /**
-     * List of curve25519 keys involved in telling us about the senderCurve25519Key and claimedEd25519Key.
-     * See {@link MatrixEvent#getForwardingCurve25519KeyChain}.
-     */
-    forwardingCurve25519KeyChain?: string[];
-    /**
-     * Key owned by the sender of this event.  See {@link MatrixEvent#getSenderKey}.
-     */
-    senderCurve25519Key?: string;
-    /**
-     * ed25519 key claimed by the sender of this event. See {@link MatrixEvent#getClaimedEd25519Key}.
-     */
-    claimedEd25519Key?: string;
-    untrusted?: boolean;
-    /**
-     * The sender doesn't authorize the unverified devices to decrypt his messages
-     */
-    encryptedDisabledForUnverifiedDevices?: boolean;
-}
+// Backwards compatible re-export
+export type { EventDecryptionResult as IEventDecryptionResult } from "../common-crypto/CryptoBackend";

 interface Extensible {
    [key: string]: any;
@@ -193,12 +193,6 @@ export interface IBindThreePidBody {
    sid: string;
 }

-export interface IAddThreePidBody {
-    client_secret: string;
-    id_server: string;
-    sid: string;
-}
-
 export interface IRelationsRequestOpts {
    from?: string;
    to?: string;
@@ -28,6 +28,7 @@ import {
    validateWellKnownAuthentication,
 } from "./oidc/validate";
 import { OidcError } from "./oidc/error";
+import { MINIMUM_MATRIX_VERSION } from "./version-support";

 // Dev note: Auto discovery is part of the spec.
 // See: https://matrix.org/docs/spec/client_server/r0.4.0.html#server-discovery
@@ -50,6 +51,9 @@ enum AutoDiscoveryError {
    InvalidIs = "Invalid identity server discovery response",
    MissingWellknown = "No .well-known JSON file found",
    InvalidJson = "Invalid JSON",
+    HomeserverTooOld = "The homeserver does not meet the minimum version requirements",
+    // TODO: Implement when Sydent supports the `/versions` endpoint - https://github.com/matrix-org/sydent/issues/424
+    //IdentityServerTooOld = "The identity server does not meet the minimum version requirements",
 }

 interface AutoDiscoveryState {
@@ -108,6 +112,8 @@ export class AutoDiscovery {

    public static readonly ERROR_INVALID_JSON = AutoDiscoveryError.InvalidJson;

+    public static readonly ERROR_HOMESERVER_TOO_OLD = AutoDiscoveryError.HomeserverTooOld;
+
    public static readonly ALL_ERRORS = Object.keys(AutoDiscoveryError);

    /**
@@ -199,7 +205,7 @@ export class AutoDiscovery {

        // Step 3: Make sure the homeserver URL points to a homeserver.
        const hsVersions = await this.fetchWellKnownObject<IServerVersions>(`${hsUrl}/_matrix/client/versions`);
-        if (!hsVersions?.raw?.["versions"]) {
+        if (!hsVersions || !Array.isArray(hsVersions.raw?.["versions"])) {
            logger.error("Invalid /versions response");
            clientConfig["m.homeserver"].error = AutoDiscovery.ERROR_INVALID_HOMESERVER;

@@ -210,6 +216,18 @@ export class AutoDiscovery {
            return Promise.resolve(clientConfig);
        }

+        // Step 3.1: Non-spec check to ensure the server will actually work for us
+        if (!hsVersions.raw!["versions"].includes(MINIMUM_MATRIX_VERSION)) {
+            logger.error("Homeserver does not meet minimum version requirements");
+            clientConfig["m.homeserver"].error = AutoDiscovery.ERROR_HOMESERVER_TOO_OLD;
+
+            // Supply the base_url to the caller because they may be ignoring liveliness
+            // errors, like this one.
+            clientConfig["m.homeserver"].base_url = hsUrl;
+
+            return Promise.resolve(clientConfig);
+        }
+
        // Step 4: Now that the homeserver looks valid, update our client config.
        clientConfig["m.homeserver"] = {
            state: AutoDiscovery.SUCCESS,
@@ -133,7 +133,6 @@ import {
    IFilterResponse,
    ITagsResponse,
    IStatusResponse,
-    IAddThreePidBody,
    KnockRoomOpts,
 } from "./@types/requests";
 import {
@@ -149,7 +148,7 @@ import {
    UNSTABLE_MSC3089_TREE_SUBTYPE,
    MSC3912_RELATION_BASED_REDACTIONS_PROP,
 } from "./@types/event";
-import { IdServerUnbindResult, IImageInfo, Preset, Visibility } from "./@types/partials";
+import { IdServerUnbindResult, IImageInfo, JoinRule, Preset, Visibility } from "./@types/partials";
 import { EventMapper, eventMapperFor, MapperOpts } from "./event-mapper";
 import { randomString } from "./randomstring";
 import { BackupManager, IKeyBackup, IKeyBackupCheck, IPreparedKeyBackupVersion, TrustInfo } from "./crypto/backup";
@@ -737,6 +736,7 @@ export interface IPublicRoomsChunkRoom {
    guest_can_join: boolean;
    num_joined_members: number;
    room_type?: RoomType | string; // Added by MSC3827
+    join_rule?: JoinRule.Knock | JoinRule.Public; // Added by MSC2403
 }

 interface IPublicRoomsResponse {
@@ -1287,7 +1287,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
            baseUrl: opts.baseUrl,
            idBaseUrl: opts.idBaseUrl,
            accessToken: opts.accessToken,
-            prefix: ClientPrefix.R0,
+            prefix: ClientPrefix.V3,
            onlyData: true,
            extraParams: opts.queryParams,
            localTimeoutMs: opts.localTimeoutMs,
@@ -2252,6 +2252,9 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
        this.reEmitter.reEmit(rustCrypto, [
            CryptoEvent.VerificationRequestReceived,
            CryptoEvent.UserTrustStatusChanged,
+            CryptoEvent.KeyBackupStatus,
+            CryptoEvent.KeyBackupSessionsRemaining,
+            CryptoEvent.KeyBackupFailed,
        ]);
    }

@@ -2442,6 +2445,8 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
     *
     * @returns resolves to a VerificationRequest
     *    when the request has been sent to the other party.
+     *
+     * @deprecated Prefer {@link CryptoApi.requestVerificationDM}.
     */
    public requestVerificationDM(userId: string, roomId: string): Promise<VerificationRequest> {
        if (!this.crypto) {
@@ -2623,6 +2628,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
     * @param userId - the user ID to get the cross-signing info for.
     *
     * @returns the cross signing information for the user.
+     * @deprecated Prefer {@link CryptoApi#userHasCrossSigningKeys}
     */
    public getStoredCrossSigningForUser(userId: string): CrossSigningInfo | null {
        if (!this.cryptoBackend) {
@@ -2637,6 +2643,8 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
     * The cross-signing API is currently UNSTABLE and may change without notice.
     *
     * @param userId - The ID of the user to check.
+     *
+     * @deprecated Use {@link Crypto.CryptoApi.getUserVerificationStatus | `CryptoApi.getUserVerificationStatus`}
     */
    public checkUserTrust(userId: string): UserTrustLevel {
        if (!this.cryptoBackend) {
@@ -3251,6 +3259,8 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
     *     getKeyBackupVersion) in backupInfo and
     *     trust information (as returned by isKeyBackupTrusted)
     *     in trustInfo.
+     *
+     * @deprecated Prefer {@link CryptoApi.checkKeyBackupAndEnable}.
     */
    public checkKeyBackup(): Promise<IKeyBackupCheck | null> {
        if (!this.crypto) {
@@ -3262,6 +3272,8 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
    /**
     * Get information about the current key backup.
     * @returns Information object from API or null
+     *
+     * @deprecated Prefer {@link CryptoApi.checkKeyBackupAndEnable}.
     */
    public async getKeyBackupVersion(): Promise<IKeyBackupInfo | null> {
        let res: IKeyBackupInfo;
@@ -3320,6 +3332,8 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
     *
     * @param info - Backup information object as returned by getKeyBackupVersion
     * @returns Promise which resolves when complete.
+     *
+     * @deprecated Do not call this directly. Instead call {@link CryptoApi.checkKeyBackupAndEnable}.
     */
    public enableKeyBackup(info: IKeyBackupInfo): Promise<void> {
        if (!this.crypto) {
@@ -3331,6 +3345,8 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa

    /**
     * Disable backing up of keys.
+     *
+     * @deprecated It should be unnecessary to disable key backup.
     */
    public disableKeyBackup(): void {
        if (!this.crypto) {
@@ -3350,6 +3366,8 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
     *
     * @returns Object that can be passed to createKeyBackupVersion and
     *     additionally has a 'recovery_key' member with the user-facing recovery key string.
+     *
+     * @deprecated Use {@link Crypto.CryptoApi.resetKeyBackup | `CryptoApi.resetKeyBackup`}.
     */
    public async prepareKeyBackupVersion(
        password?: string | Uint8Array | null,
@@ -3393,6 +3411,8 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
     *
     * @param info - Info object from prepareKeyBackupVersion
     * @returns Object with 'version' param indicating the version created
+     *
+     * @deprecated Use {@link Crypto.CryptoApi.resetKeyBackup | `CryptoApi.resetKeyBackup`}.
     */
    public async createKeyBackupVersion(info: IKeyBackupInfo): Promise<IKeyBackupInfo> {
        if (!this.crypto) {
@@ -3425,9 +3445,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
            await this.crypto.crossSigningInfo.signObject(data.auth_data, "master");
        }

-        const res = await this.http.authedRequest<IKeyBackupInfo>(Method.Post, "/room_keys/version", undefined, data, {
-            prefix: ClientPrefix.V3,
-        });
+        const res = await this.http.authedRequest<IKeyBackupInfo>(Method.Post, "/room_keys/version", undefined, data);

        // We could assume everything's okay and enable directly, but this ensures
        // we run the same signature verification that will be used for future
@@ -3440,24 +3458,15 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
        return res;
    }

+    /**
+     * @deprecated Use {@link Crypto.CryptoApi.deleteKeyBackupVersion | `CryptoApi.deleteKeyBackupVersion`}.
+     */
    public async deleteKeyBackupVersion(version: string): Promise<void> {
-        if (!this.crypto) {
+        if (!this.cryptoBackend) {
            throw new Error("End-to-end encryption disabled");
        }

-        // If we're currently backing up to this backup... stop.
-        // (We start using it automatically in createKeyBackupVersion
-        // so this is symmetrical).
-        // TODO: convert this to use crypto.getActiveSessionBackupVersion. And actually check the version.
-        if (this.crypto.backupManager.version) {
-            this.crypto.backupManager.disableKeyBackup();
-        }
-
-        const path = utils.encodeUri("/room_keys/version/$version", {
-            $version: version,
-        });
-
-        await this.http.authedRequest(Method.Delete, path, undefined, undefined, { prefix: ClientPrefix.V3 });
+        await this.cryptoBackend.deleteKeyBackupVersion(version);
    }

    private makeKeyBackupPath(roomId: undefined, sessionId: undefined, version?: string): IKeyBackupPath;
@@ -3591,7 +3600,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
     * Restores all rooms if omitted.
     * @param targetSessionId - Session ID to target a specific session.
     * Restores all sessions if omitted.
-     * @param backupInfo - Backup metadata from `checkKeyBackup`
+     * @param backupInfo - Backup metadata from `getKeyBackupVersion` or `checkKeyBackup`.`backupInfo`
     * @param opts - Optional params such as callbacks
     * @returns Status of restoration with `total` and `imported`
     * key counts.
@@ -3924,7 +3933,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
     */
    public getMediaConfig(): Promise<IMediaConfig> {
        return this.http.authedRequest(Method.Get, "/config", undefined, undefined, {
-            prefix: MediaPrefix.R0,
+            prefix: MediaPrefix.V3,
        });
    }

@@ -5179,7 +5188,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
            },
            undefined,
            {
-                prefix: MediaPrefix.R0,
+                prefix: MediaPrefix.V3,
                priority: "low",
            },
        );
@@ -5346,7 +5355,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
            address: address,
        };

-        if (this.identityServer?.getAccessToken && (await this.doesServerAcceptIdentityAccessToken())) {
+        if (this.identityServer?.getAccessToken) {
            const identityAccessToken = await this.identityServer.getAccessToken();
            if (identityAccessToken) {
                params["id_access_token"] = identityAccessToken;
@@ -6138,7 +6147,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
        const opts = {
            prefix:
                Thread.hasServerSideListSupport === FeatureSupport.Stable
-                    ? "/_matrix/client/v1"
+                    ? ClientPrefix.V1
                    : "/_matrix/client/unstable/org.matrix.msc3856",
        };

@@ -6664,20 +6673,6 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
    ): Promise<T> {
        const postParams = Object.assign({}, params);

-        // If the HS supports separate add and bind, then requestToken endpoints
-        // don't need an IS as they are all validated by the HS directly.
-        if (!(await this.doesServerSupportSeparateAddAndBind()) && this.idBaseUrl) {
-            const idServerUrl = new URL(this.idBaseUrl);
-            postParams.id_server = idServerUrl.host;
-
-            if (this.identityServer?.getAccessToken && (await this.doesServerAcceptIdentityAccessToken())) {
-                const identityAccessToken = await this.identityServer.getAccessToken();
-                if (identityAccessToken) {
-                    postParams.id_access_token = identityAccessToken;
-                }
-            }
-        }
-
        return this.http.request(Method.Post, endpoint, undefined, postParams);
    }

@@ -7382,78 +7377,6 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
        return versions && versions.includes(version);
    }

-    /**
-     * Query the server to see if it supports members lazy loading
-     * @returns true if server supports lazy loading
-     */
-    public async doesServerSupportLazyLoading(): Promise<boolean> {
-        const response = await this.getVersions();
-        if (!response) return false;
-
-        const versions = response["versions"];
-        const unstableFeatures = response["unstable_features"];
-
-        return (
-            (versions && versions.includes("r0.5.0")) || (unstableFeatures && unstableFeatures["m.lazy_load_members"])
-        );
-    }
-
-    /**
-     * Query the server to see if the `id_server` parameter is required
-     * when registering with an 3pid, adding a 3pid or resetting password.
-     * @returns true if id_server parameter is required
-     */
-    public async doesServerRequireIdServerParam(): Promise<boolean> {
-        const response = await this.getVersions();
-        if (!response) return true;
-
-        const versions = response["versions"];
-
-        // Supporting r0.6.0 is the same as having the flag set to false
-        if (versions && versions.includes("r0.6.0")) {
-            return false;
-        }
-
-        const unstableFeatures = response["unstable_features"];
-        if (!unstableFeatures) return true;
-        if (unstableFeatures["m.require_identity_server"] === undefined) {
-            return true;
-        } else {
-            return unstableFeatures["m.require_identity_server"];
-        }
-    }
-
-    /**
-     * Query the server to see if the `id_access_token` parameter can be safely
-     * passed to the homeserver. Some homeservers may trigger errors if they are not
-     * prepared for the new parameter.
-     * @returns true if id_access_token can be sent
-     */
-    public async doesServerAcceptIdentityAccessToken(): Promise<boolean> {
-        const response = await this.getVersions();
-        if (!response) return false;
-
-        const versions = response["versions"];
-        const unstableFeatures = response["unstable_features"];
-        return (versions && versions.includes("r0.6.0")) || (unstableFeatures && unstableFeatures["m.id_access_token"]);
-    }
-
-    /**
-     * Query the server to see if it supports separate 3PID add and bind functions.
-     * This affects the sequence of API calls clients should use for these operations,
-     * so it's helpful to be able to check for support.
-     * @returns true if separate functions are supported
-     */
-    public async doesServerSupportSeparateAddAndBind(): Promise<boolean> {
-        const response = await this.getVersions();
-        if (!response) return false;
-
-        const versions = response["versions"];
-        const unstableFeatures = response["unstable_features"];
-
-        return versions?.includes("r0.6.0") || unstableFeatures?.["m.separate_add_and_bind"];
-    }
-
    /**
     * Query the server to see if it lists support for an unstable feature
     * in the /versions response
@@ -7525,14 +7448,6 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
        }
    }

-    /**
-     * Query the server to see if it supports the MSC2457 `logout_devices` parameter when setting password
-     * @returns true if server supports the `logout_devices` parameter
-     */
-    public doesServerSupportLogoutDevices(): Promise<boolean> {
-        return this.isVersionSupported("r0.6.1");
-    }
-
    /**
     * Get if lazy loading members is being used.
     * @returns Whether or not members are lazy loaded by this client
@@ -7917,18 +7832,6 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
        });
    }

-    /**
-     * @param relayState - URL Callback after SAML2 Authentication
-     * @returns Promise which resolves to a LoginResponse object
-     * @returns Rejects: with an error response.
-     * @deprecated this isn't in the Matrix spec anymore
-     */
-    public loginWithSAML2(relayState: string): Promise<LoginResponse> {
-        return this.login("m.login.saml2", {
-            relay_state: relayState,
-        });
-    }
-
    /**
     * @param redirectUrl - The URL to redirect to after the HS
     * authenticates with CAS.
@@ -7958,7 +7861,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
            [SSO_ACTION_PARAM.unstable!]: action,
        };

-        return this.http.getUrl(url, params, ClientPrefix.R0).href;
+        return this.http.getUrl(url, params).href;
    }

    /**
@@ -8076,13 +7979,9 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
            $loginType: loginType,
        });

-        return this.http.getUrl(
-            path,
-            {
-                session: authSessionId,
-            },
-            ClientPrefix.R0,
-        ).href;
+        return this.http.getUrl(path, {
+            session: authSessionId,
+        }).href;
    }

    /**
@@ -8097,11 +7996,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa

        // inject the id_access_token if inviting 3rd party addresses
        const invitesNeedingToken = (options.invite_3pid || []).filter((i) => !i.id_access_token);
-        if (
-            invitesNeedingToken.length > 0 &&
-            this.identityServer?.getAccessToken &&
-            (await this.doesServerAcceptIdentityAccessToken())
-        ) {
+        if (invitesNeedingToken.length > 0 && this.identityServer?.getAccessToken) {
            const identityAccessToken = await this.identityServer.getAccessToken();
            if (identityAccessToken) {
                for (const invite of invitesNeedingToken) {
@@ -8460,30 +8355,6 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
        return this.http.authedRequest(Method.Put, path, undefined, { visibility });
    }

-    /**
-     * Set the visbility of a room bridged to a 3rd party network in
-     * the current HS's room directory.
-     * @param networkId - the network ID of the 3rd party
-     *                 instance under which this room is published under.
-     * @param visibility - "public" to make the room visible
-     *                 in the public directory, or "private" to make
-     *                 it invisible.
-     * @returns Promise which resolves: result object
-     * @returns Rejects: with an error response.
-     * @deprecated missing from the spec
-     */
-    public setRoomDirectoryVisibilityAppService(
-        networkId: string,
-        roomId: string,
-        visibility: "public" | "private",
-    ): Promise<any> {
-        const path = utils.encodeUri("/directory/list/appservice/$networkId/$roomId", {
-            $networkId: networkId,
-            $roomId: roomId,
-        });
-        return this.http.authedRequest(Method.Put, path, undefined, { visibility: visibility });
-    }
-
    /**
     * Query the user directory with a term matching user IDs, display names and domains.
     * @param term - the term with which to search.
@@ -8566,31 +8437,10 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
        return this.http.authedRequest(Method.Get, "/account/3pid");
    }

-    /**
-     * Add a 3PID to your homeserver account and optionally bind it to an identity
-     * server as well. An identity server is required as part of the `creds` object.
-     *
-     * @deprecated this API is deprecated, and you should instead use `addThreePidOnly` for homeservers that support it.
-     *
-     * @returns Promise which resolves: on success
-     * @returns Rejects: with an error response.
-     */
-    public addThreePid(creds: IAddThreePidBody, bind: boolean): Promise<{ submit_url?: string }> {
-        const path = "/account/3pid";
-        const data = {
-            threePidCreds: creds,
-            bind: bind,
-        };
-        return this.http.authedRequest(Method.Post, path, undefined, data);
-    }
-
    /**
     * Add a 3PID to your homeserver account. This API does not use an identity
     * server, as the homeserver is expected to handle 3PID ownership validation.
     *
-     * You can check whether a homeserver supports this API via
-     * `doesServerSupportSeparateAddAndBind`.
-     *
     * @param data - A object with 3PID validation data from having called
     * `account/3pid/<medium>/requestToken` on the homeserver.
     * @returns Promise which resolves: to an empty object `{}`
@@ -8598,8 +8448,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
     */
    public async addThreePidOnly(data: IAddThreePidOnlyBody): Promise<{}> {
        const path = "/account/3pid/add";
-        const prefix = (await this.isVersionSupported("r0.6.0")) ? ClientPrefix.R0 : ClientPrefix.Unstable;
-        return this.http.authedRequest(Method.Post, path, undefined, data, { prefix });
+        return this.http.authedRequest(Method.Post, path, undefined, data);
    }

    /**
@@ -8607,9 +8456,6 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
     * identity server handles 3PID ownership validation and the homeserver records
     * the new binding to track where all 3PIDs for the account are bound.
     *
-     * You can check whether a homeserver supports this API via
-     * `doesServerSupportSeparateAddAndBind`.
-     *
     * @param data - A object with 3PID validation data from having called
     * `validate/<medium>/requestToken` on the identity server. It should also
     * contain `id_server` and `id_access_token` fields as well.
@@ -8618,8 +8464,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
     */
    public async bindThreePid(data: IBindThreePidBody): Promise<{}> {
        const path = "/account/3pid/bind";
-        const prefix = (await this.isVersionSupported("r0.6.0")) ? ClientPrefix.R0 : ClientPrefix.Unstable;
-        return this.http.authedRequest(Method.Post, path, undefined, data, { prefix });
+        return this.http.authedRequest(Method.Post, path, undefined, data);
    }

    /**
@@ -8644,8 +8489,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
            address,
            id_server: this.getIdentityServerUrl(true),
        };
-        const prefix = (await this.isVersionSupported("r0.6.0")) ? ClientPrefix.R0 : ClientPrefix.Unstable;
-        return this.http.authedRequest(Method.Post, path, undefined, data, { prefix });
+        return this.http.authedRequest(Method.Post, path, undefined, data);
    }

    /**
@@ -8953,9 +8797,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
    }

    public uploadKeySignatures(content: KeySignatures): Promise<IUploadKeySignaturesResponse> {
-        return this.http.authedRequest(Method.Post, "/keys/signatures/upload", undefined, content, {
-            prefix: ClientPrefix.V3,
-        });
+        return this.http.authedRequest(Method.Post, "/keys/signatures/upload", undefined, content);
    }

    /**
@@ -15,12 +15,11 @@ limitations under the License.
 */

 import type { IDeviceLists, IToDeviceEvent } from "../sync-accumulator";
-import { MatrixEvent } from "../models/event";
+import { IClearEvent, MatrixEvent } from "../models/event";
 import { Room } from "../models/room";
 import { CryptoApi } from "../crypto-api";
 import { CrossSigningInfo, UserTrustLevel } from "../crypto/CrossSigning";
 import { IEncryptedEventInfo } from "../crypto/api";
-import { IEventDecryptionResult } from "../@types/crypto";

 /**
 * Common interface for the crypto implementations
@@ -47,9 +46,9 @@ export interface CryptoBackend extends SyncCryptoCallbacks, CryptoApi {
    /**
     * Get the verification level for a given user
     *
-     * TODO: define this better
-     *
     * @param userId - user to be checked
+     *
+     * @deprecated Superceded by {@link CryptoApi#getUserVerificationStatus}.
     */
    checkUserTrust(userId: string): UserTrustLevel;

@@ -71,7 +70,7 @@ export interface CryptoBackend extends SyncCryptoCallbacks, CryptoApi {
     * @returns a promise which resolves once we have finished decrypting.
     * Rejects with an error if there is a problem decrypting the event.
     */
-    decryptEvent(event: MatrixEvent): Promise<IEventDecryptionResult>;
+    decryptEvent(event: MatrixEvent): Promise<EventDecryptionResult>;

    /**
     * Get information about the encryption of an event
@@ -88,6 +87,7 @@ export interface CryptoBackend extends SyncCryptoCallbacks, CryptoApi {
     * @param userId - the user ID to get the cross-signing info for.
     *
     * @returns the cross signing information for the user.
+     * @deprecated Prefer {@link CryptoApi#userHasCrossSigningKeys}
     */
    getStoredCrossSigningForUser(userId: string): CrossSigningInfo | null;

@@ -181,3 +181,31 @@ export interface OnSyncCompletedData {
 export interface CheckOwnCrossSigningTrustOpts {
    allowPrivateKeyRequests?: boolean;
 }
+
+/**
+ * The result of a (successful) call to {@link CryptoBackend.decryptEvent}
+ */
+export interface EventDecryptionResult {
+    /**
+     * The plaintext payload for the event (typically containing <tt>type</tt> and <tt>content</tt> fields).
+     */
+    clearEvent: IClearEvent;
+    /**
+     * List of curve25519 keys involved in telling us about the senderCurve25519Key and claimedEd25519Key.
+     * See {@link MatrixEvent#getForwardingCurve25519KeyChain}.
+     */
+    forwardingCurve25519KeyChain?: string[];
+    /**
+     * Key owned by the sender of this event.  See {@link MatrixEvent#getSenderKey}.
+     */
+    senderCurve25519Key?: string;
+    /**
+     * ed25519 key claimed by the sender of this event. See {@link MatrixEvent#getClaimedEd25519Key}.
+     */
+    claimedEd25519Key?: string;
+    untrusted?: boolean;
+    /**
+     * The sender doesn't authorize the unverified devices to decrypt his messages
+     */
+    encryptedDisabledForUnverifiedDevices?: boolean;
+}
@@ -49,7 +49,7 @@ export function getHttpUriForMxc(
        }
    }
    let serverAndMediaId = mxc.slice(6); // strips mxc://
-    let prefix = "/_matrix/media/r0/download/";
+    let prefix = "/_matrix/media/v3/download/";
    const params: Record<string, string> = {};

    if (width) {
@@ -64,7 +64,7 @@ export function getHttpUriForMxc(
    if (Object.keys(params).length > 0) {
        // these are thumbnailing params so they probably want the
        // thumbnailing API...
-        prefix = "/_matrix/media/r0/thumbnail/";
+        prefix = "/_matrix/media/v3/thumbnail/";
    }

    const fragmentOffset = serverAndMediaId.indexOf("#");
@@ -20,7 +20,7 @@ import { DeviceMap } from "./models/device";
 import { UIAuthCallback } from "./interactive-auth";
 import { AddSecretStorageKeyOpts, SecretStorageCallbacks, SecretStorageKeyDescription } from "./secret-storage";
 import { VerificationRequest } from "./crypto-api/verification";
-import { BackupTrustInfo, KeyBackupInfo } from "./crypto-api/keybackup";
+import { BackupTrustInfo, KeyBackupCheck, KeyBackupInfo } from "./crypto-api/keybackup";
 import { ISignatures } from "./@types/signed";

 /**
@@ -38,16 +38,6 @@ export interface CryptoApi {
     */
    globalBlacklistUnverifiedDevices: boolean;

-    /**
-     * Checks if the user has previously published cross-signing keys
-     *
-     * This means downloading the devicelist for the user and checking if the list includes
-     * the cross-signing pseudo-device.
-     *
-     * @returns true if the user has previously published cross-signing keys
-     */
-    userHasCrossSigningKeys(): Promise<boolean>;
-
    /**
     * Perform any background tasks that can be done before a message is ready to
     * send, in order to speed up sending of the message.
@@ -88,6 +78,22 @@ export interface CryptoApi {
     */
    importRoomKeys(keys: IMegolmSessionData[], opts?: ImportRoomKeysOpts): Promise<void>;

+    /**
+     * Check if the given user has published cross-signing keys.
+     *
+     * - If the user is tracked, a `/keys/query` request is made to update locally the cross signing keys.
+     * - If the user is not tracked locally and downloadUncached is set to true,
+     *   a `/keys/query` request is made to the server to retrieve the cross signing keys.
+     * - Otherwise, return false
+     *
+     * @param userId - the user ID to check. Defaults to the local user.
+     * @param downloadUncached - If true, download the device list for users whose device list we are not
+     *    currently tracking. Defaults to false, in which case `false` will be returned for such users.
+     *
+     * @returns true if the cross signing keys are available.
+     */
+    userHasCrossSigningKeys(userId?: string, downloadUncached?: boolean): Promise<boolean>;
+
    /**
     * Get the device information for the given list of users.
     *
@@ -126,6 +132,14 @@ export interface CryptoApi {
     */
    getTrustCrossSignedDevices(): boolean;

+    /**
+     * Get the verification status of a given user.
+     *
+     * @param userId - The ID of the user to check.
+     *
+     */
+    getUserVerificationStatus(userId: string): Promise<UserVerificationStatus>;
+
    /**
     * Get the verification status of a given device.
     *
@@ -164,6 +178,8 @@ export interface CryptoApi {
     * return true.
     *
     * @returns True if cross-signing is ready to be used on this device
+     *
+     * @throws May throw {@link ClientStoppedError} if the `MatrixClient` is stopped before or during the call.
     */
    isCrossSigningReady(): Promise<boolean>;

@@ -228,7 +244,10 @@ export interface CryptoApi {
    /**
     * Get the status of our cross-signing keys.
     *
-     * @returns The current status of cross-signing keys: whether we have public and private keys cached locally, and whether the private keys are in secret storage.
+     * @returns The current status of cross-signing keys: whether we have public and private keys cached locally, and
+     * whether the private keys are in secret storage.
+     *
+     * @throws May throw {@link ClientStoppedError} if the `MatrixClient` is stopped before or during the call.
     */
    getCrossSigningStatus(): Promise<CrossSigningStatus>;

@@ -281,6 +300,16 @@ export interface CryptoApi {
     */
    findVerificationRequestDMInProgress(roomId: string, userId?: string): VerificationRequest | undefined;

+    /**
+     * Request a key verification from another user, using a DM.
+     *
+     * @param userId - the user to request verification with.
+     * @param roomId - the room to use for verification.
+     *
+     * @returns resolves to a VerificationRequest when the request has been sent to the other party.
+     */
+    requestVerificationDM(userId: string, roomId: string): Promise<VerificationRequest>;
+
    /**
     * Send a verification request to our other devices.
     *
@@ -350,6 +379,35 @@ export interface CryptoApi {
     * @param info - key backup info dict from {@link MatrixClient#getKeyBackupVersion}.
     */
    isKeyBackupTrusted(info: KeyBackupInfo): Promise<BackupTrustInfo>;
+
+    /**
+     * Force a re-check of the key backup and enable/disable it as appropriate.
+     *
+     * Fetches the current backup information from the server. If there is a backup, and it is trusted, starts
+     * backing up to it; otherwise, disables backups.
+     *
+     * @returns `null` if there is no backup on the server. Otherwise, data on the backup as returned by the server,
+     *   and trust information (as returned by {@link isKeyBackupTrusted}).
+     */
+    checkKeyBackupAndEnable(): Promise<KeyBackupCheck | null>;
+
+    /**
+     * Creates a new key backup version.
+     *
+     * If there are existing backups they will be replaced.
+     *
+     * The decryption key will be saved in Secret Storage (the {@link SecretStorageCallbacks.getSecretStorageKey} Crypto
+     * callback will be called)
+     * and the backup engine will be started.
+     */
+    resetKeyBackup(): Promise<void>;
+
+    /**
+     * Deletes the given key backup.
+     *
+     * @param version - The backup version to delete.
+     */
+    deleteKeyBackupVersion(version: string): Promise<void>;
 }

 /**
@@ -366,6 +424,46 @@ export interface BootstrapCrossSigningOpts {
    authUploadDeviceSigningKeys?: UIAuthCallback<void>;
 }

+/**
+ * Represents the ways in which we trust a user
+ */
+export class UserVerificationStatus {
+    public constructor(
+        private readonly crossSigningVerified: boolean,
+        private readonly crossSigningVerifiedBefore: boolean,
+        private readonly tofu: boolean,
+    ) {}
+
+    /**
+     * @returns true if this user is verified via any means
+     */
+    public isVerified(): boolean {
+        return this.isCrossSigningVerified();
+    }
+
+    /**
+     * @returns true if this user is verified via cross signing
+     */
+    public isCrossSigningVerified(): boolean {
+        return this.crossSigningVerified;
+    }
+
+    /**
+     * @returns true if we ever verified this user before (at least for
+     * the history of verifications observed by this device).
+     */
+    public wasCrossSigningVerified(): boolean {
+        return this.crossSigningVerifiedBefore;
+    }
+
+    /**
+     * @returns true if this user's key is trusted on first use
+     */
+    public isTofu(): boolean {
+        return this.tofu;
+    }
+}
+
 export class DeviceVerificationStatus {
    /**
     * True if this device has been signed by its owner (and that signature verified).
@@ -60,3 +60,11 @@ export interface BackupTrustInfo {
     */
    readonly matchesDecryptionKey: boolean;
 }
+
+/**
+ * The result of {@link CryptoApi.checkKeyBackupAndEnable}.
+ */
+export interface KeyBackupCheck {
+    backupInfo: KeyBackupInfo;
+    trustInfo: BackupTrustInfo;
+}
@@ -30,7 +30,10 @@ import { ICryptoCallbacks } from ".";
 import { ISignatures } from "../@types/signed";
 import { CryptoStore, SecretStorePrivateKeys } from "./store/base";
 import { ServerSideSecretStorage, SecretStorageKeyDescription } from "../secret-storage";
-import { DeviceVerificationStatus } from "../crypto-api";
+import { DeviceVerificationStatus, UserVerificationStatus as UserTrustLevel } from "../crypto-api";
+
+// backwards-compatibility re-exports
+export { UserTrustLevel };

 const KEY_REQUEST_TIMEOUT_MS = 1000 * 60;

@@ -587,46 +590,6 @@ export enum CrossSigningLevel {
    SELF_SIGNING = 1,
 }

-/**
- * Represents the ways in which we trust a user
- */
-export class UserTrustLevel {
-    public constructor(
-        private readonly crossSigningVerified: boolean,
-        private readonly crossSigningVerifiedBefore: boolean,
-        private readonly tofu: boolean,
-    ) {}
-
-    /**
-     * @returns true if this user is verified via any means
-     */
-    public isVerified(): boolean {
-        return this.isCrossSigningVerified();
-    }
-
-    /**
-     * @returns true if this user is verified via cross signing
-     */
-    public isCrossSigningVerified(): boolean {
-        return this.crossSigningVerified;
-    }
-
-    /**
-     * @returns true if we ever verified this user before (at least for
-     * the history of verifications observed by this device).
-     */
-    public wasCrossSigningVerified(): boolean {
-        return this.crossSigningVerifiedBefore;
-    }
-
-    /**
-     * @returns true if this user's key is trusted on first use
-     */
-    public isTofu(): boolean {
-        return this.tofu;
-    }
-}
-
 /**
 * Represents the ways in which we trust a device.
 *
@@ -228,6 +228,8 @@ export class EncryptionSetupOperation {
                    prefix: ClientPrefix.V3,
                });
            }
+            // tell the backup manager to re-check the keys now that they have been (maybe) updated
+            await crypto.backupManager.checkKeyBackup();
        }
    }
 }
@@ -25,7 +25,7 @@ import { MEGOLM_ALGORITHM, verifySignature } from "./olmlib";
 import { DeviceInfo } from "./deviceinfo";
 import { DeviceTrustLevel } from "./CrossSigning";
 import { keyFromPassphrase } from "./key_passphrase";
-import { safeSet, sleep } from "../utils";
+import { encodeUri, safeSet, sleep } from "../utils";
 import { IndexedDBCryptoStore } from "./store/indexeddb-crypto-store";
 import { encodeRecoveryKey } from "./recoverykey";
 import { calculateKeyCheck, decryptAES, encryptAES, IEncryptedPayload } from "./aes";
@@ -39,7 +39,7 @@ import {
 import { UnstableValue } from "../NamespacedValue";
 import { CryptoEvent } from "./index";
 import { crypto } from "./crypto";
-import { HTTPError, MatrixError } from "../http-api";
+import { ClientPrefix, HTTPError, MatrixError, Method } from "../http-api";
 import { BackupTrustInfo } from "../crypto-api/keybackup";

 const KEY_BACKUP_KEYS_PER_REQUEST = 200;
@@ -224,6 +224,33 @@ export class BackupManager {
        this.algorithm = await BackupManager.makeAlgorithm(info, this.getKey);
    }

+    /**
+     * Deletes all key backups.
+     *
+     * Will call the API to delete active backup until there is no more present.
+     */
+    public async deleteAllKeyBackupVersions(): Promise<void> {
+        // there could be several backup versions, delete all to be safe.
+        let current = (await this.baseApis.getKeyBackupVersion())?.version ?? null;
+        while (current != null) {
+            await this.deleteKeyBackupVersion(current);
+            this.disableKeyBackup();
+            current = (await this.baseApis.getKeyBackupVersion())?.version ?? null;
+        }
+    }
+
+    /**
+     * Deletes the given key backup.
+     *
+     * @param version - The backup version to delete.
+     */
+    public async deleteKeyBackupVersion(version: string): Promise<void> {
+        const path = encodeUri("/room_keys/version/$version", { $version: version });
+        await this.baseApis.http.authedRequest<void>(Method.Delete, path, undefined, undefined, {
+            prefix: ClientPrefix.V3,
+        });
+    }
+
    /**
     * Check the server for an active key backup and
     * if one is present and has a valid signature from
@@ -333,7 +360,7 @@ export class BackupManager {
        };

        if (!backupInfo || !backupInfo.algorithm || !backupInfo.auth_data || !backupInfo.auth_data.signatures) {
-            logger.info("Key backup is absent or missing required data");
+            logger.info(`Key backup is absent or missing required data: ${JSON.stringify(backupInfo)}`);
            return ret;
        }

@@ -440,6 +467,7 @@ export class BackupManager {
     * @param maxDelay - Maximum delay to wait in ms. 0 means no delay.
     */
    public async scheduleKeyBackupSend(maxDelay = 10000): Promise<void> {
+        logger.debug(`Key backup: scheduleKeyBackupSend currentSending:${this.sendingBackups} delay:${maxDelay}`);
        if (this.sendingBackups) return;

        this.sendingBackups = true;
@@ -452,6 +480,7 @@ export class BackupManager {
            await sleep(delay);
            if (!this.clientRunning) {
                logger.debug("Key backup send aborted, client stopped");
+                this.sendingBackups = false;
                return;
            }
            let numFailures = 0; // number of consecutive failures
@@ -463,24 +492,26 @@ export class BackupManager {
                    const numBackedUp = await this.backupPendingKeys(KEY_BACKUP_KEYS_PER_REQUEST);
                    if (numBackedUp === 0) {
                        // no sessions left needing backup: we're done
+                        this.sendingBackups = false;
                        return;
                    }
                    numFailures = 0;
                } catch (err) {
                    numFailures++;
                    logger.log("Key backup request failed", err);
-                    if ((<MatrixError>err).data) {
-                        if (
-                            (<MatrixError>err).data.errcode == "M_NOT_FOUND" ||
-                            (<MatrixError>err).data.errcode == "M_WRONG_ROOM_KEYS_VERSION"
-                        ) {
-                            // Re-check key backup status on error, so we can be
-                            // sure to present the current situation when asked.
-                            await this.checkKeyBackup();
+                    if (err instanceof MatrixError) {
+                        const errCode = err.data.errcode;
+                        if (errCode == "M_NOT_FOUND" || errCode == "M_WRONG_ROOM_KEYS_VERSION") {
+                            // Set to false now as `checkKeyBackup` might schedule a backupsend before this one ends.
+                            this.sendingBackups = false;
                            // Backup version has changed or this backup version
                            // has been deleted
-                            this.baseApis.crypto!.emit(CryptoEvent.KeyBackupFailed, (<MatrixError>err).data.errcode!);
-                            throw err;
+                            this.baseApis.crypto!.emit(CryptoEvent.KeyBackupFailed, errCode);
+                            // Re-check key backup status on error, so we can be
+                            // sure to present the current situation when asked.
+                            // This call might restart the backup loop if new backup version is trusted
+                            await this.checkKeyBackup();
+                            return;
                        }
                    }
                }
@@ -491,10 +522,14 @@ export class BackupManager {

                if (!this.clientRunning) {
                    logger.debug("Key backup send loop aborted, client stopped");
+                    this.sendingBackups = false;
                    return;
                }
            }
-        } finally {
+        } catch (err) {
+            // No one actually checks errors on this promise, it's spawned internally.
+            // Just log, apps/client should use events to check status
+            logger.log(`Backup loop failed ${err}`);
            this.sendingBackups = false;
        }
    }
@@ -92,11 +92,13 @@ import {
    CrossSigningStatus,
    DeviceVerificationStatus,
    ImportRoomKeysOpts,
+    KeyBackupCheck,
    KeyBackupInfo,
    VerificationRequest as CryptoApiVerificationRequest,
 } from "../crypto-api";
 import { Device, DeviceMap } from "../models/device";
 import { deviceInfoToDevice } from "./device-converter";
+import { ClientPrefix, Method } from "../http-api";

 /* re-exports for backwards compatibility */
 export type {
@@ -699,9 +701,9 @@ export class Crypto extends TypedEventEmitter<CryptoEvent, CryptoEventHandlerMap
     *
     * @internal
     */
-    public async userHasCrossSigningKeys(): Promise<boolean> {
-        await this.downloadKeys([this.userId]);
-        return this.deviceList.getStoredCrossSigningForUser(this.userId) !== null;
+    public async userHasCrossSigningKeys(userId = this.userId): Promise<boolean> {
+        await this.downloadKeys([userId]);
+        return this.deviceList.getStoredCrossSigningForUser(userId) !== null;
    }

    /**
@@ -1087,7 +1089,7 @@ export class Crypto extends TypedEventEmitter<CryptoEvent, CryptoEventHandlerMap
                // and want to write to the local secretStorage object
                { secureSecretStorage: false },
            );
-            // write the key ourselves to 4S
+            // write the key to 4S
            const privateKey = decodeRecoveryKey(info.recovery_key);
            await secretStorage.store("m.megolm_backup.v1", olmlib.encodeBase64(privateKey));

@@ -1144,6 +1146,48 @@ export class Crypto extends TypedEventEmitter<CryptoEvent, CryptoEventHandlerMap
        logger.log("Secure Secret Storage ready");
    }

+    /**
+     * Implementation of {@link CryptoApi#resetKeyBackup}.
+     */
+    public async resetKeyBackup(): Promise<void> {
+        // Delete existing ones
+        // There is no use case for having several key backup version live server side.
+        // Even if not deleted it would be lost as the key to restore is lost.
+        // There should be only one backup at a time.
+        await this.backupManager.deleteAllKeyBackupVersions();
+
+        const info = await this.backupManager.prepareKeyBackupVersion();
+
+        await this.signObject(info.auth_data);
+
+        // add new key backup
+        const { version } = await this.baseApis.http.authedRequest<{ version: string }>(
+            Method.Post,
+            "/room_keys/version",
+            undefined,
+            info,
+            {
+                prefix: ClientPrefix.V3,
+            },
+        );
+
+        logger.log(`Created backup version ${version}`);
+
+        // write the key to 4S
+        const privateKey = info.privateKey;
+        await this.secretStorage.store("m.megolm_backup.v1", olmlib.encodeBase64(privateKey));
+        await this.storeSessionBackupPrivateKey(privateKey);
+
+        await this.backupManager.checkAndStart();
+    }
+
+    /**
+     * Implementation of {@link CryptoApi#deleteKeyBackupVersion}.
+     */
+    public async deleteKeyBackupVersion(version: string): Promise<void> {
+        await this.backupManager.deleteKeyBackupVersion(version);
+    }
+
    /**
     * @deprecated Use {@link MatrixClient#secretStorage} and {@link SecretStorage.ServerSideSecretStorage#addKey}.
     */
@@ -1304,6 +1348,20 @@ export class Crypto extends TypedEventEmitter<CryptoEvent, CryptoEventHandlerMap
        return backupTrustInfoFromLegacyTrustInfo(trustInfo);
    }

+    /**
+     * Force a re-check of the key backup and enable/disable it as appropriate.
+     *
+     * Implementation of {@link CryptoApi.checkKeyBackupAndEnable}.
+     */
+    public async checkKeyBackupAndEnable(): Promise<KeyBackupCheck | null> {
+        const checkResult = await this.backupManager.checkKeyBackup();
+        if (!checkResult || !checkResult.backupInfo) return null;
+        return {
+            backupInfo: checkResult.backupInfo,
+            trustInfo: backupTrustInfoFromLegacyTrustInfo(checkResult.trustInfo),
+        };
+    }
+
    /**
     * Checks that a given cross-signing private key matches a given public key.
     * This can be used by the getCrossSigningKey callback to verify that the
@@ -1509,6 +1567,13 @@ export class Crypto extends TypedEventEmitter<CryptoEvent, CryptoEventHandlerMap
        return this.crossSigningInfo.checkUserTrust(userCrossSigning);
    }

+    /**
+     * Implementation of {@link CryptoApi.getUserVerificationStatus}.
+     */
+    public async getUserVerificationStatus(userId: string): Promise<UserTrustLevel> {
+        return this.checkUserTrust(userId);
+    }
+
    /**
     * Check whether a given device is trusted.
     *
@@ -51,3 +51,17 @@ export class KeySignatureUploadError extends Error {
        super(message);
    }
 }
+
+/**
+ * It is invalid to call most methods once {@link MatrixClient#stopClient} has been called.
+ *
+ * This error will be thrown if you attempt to do so.
+ *
+ * {@link MatrixClient#stopClient} itself is an exception to this: it may safely be called multiple times on the same
+ * instance.
+ */
+export class ClientStoppedError extends Error {
+    public constructor() {
+        super("MatrixClient has been stopped");
+    }
+}
@@ -110,7 +110,7 @@ export class MatrixHttpApi<O extends IHttpOpts> extends FetchHttpApi<O> {
                });
            };

-            const url = this.getUrl("/upload", undefined, MediaPrefix.R0);
+            const url = this.getUrl("/upload", undefined, MediaPrefix.V3);

            if (includeFilename && fileName) {
                url.searchParams.set("filename", encodeURIComponent(fileName));
@@ -139,7 +139,7 @@ export class MatrixHttpApi<O extends IHttpOpts> extends FetchHttpApi<O> {
            const headers: Record<string, string> = { "Content-Type": contentType };

            this.authedRequest<UploadResponse>(Method.Post, "/upload", queryParams, file, {
-                prefix: MediaPrefix.R0,
+                prefix: MediaPrefix.V3,
                headers,
                abortSignal: abortController.signal,
            })
@@ -182,7 +182,7 @@ export class MatrixHttpApi<O extends IHttpOpts> extends FetchHttpApi<O> {
    public getContentUri(): IContentUri {
        return {
            base: this.opts.baseUrl,
-            path: MediaPrefix.R0 + "/upload",
+            path: MediaPrefix.V3 + "/upload",
            params: {
                access_token: this.opts.accessToken!,
            },
@@ -16,11 +16,7 @@ limitations under the License.

 export enum ClientPrefix {
    /**
-     * A constant representing the URI path for release 0 of the Client-Server HTTP API.
-     */
-    R0 = "/_matrix/client/r0",
-    /**
-     * A constant representing the URI path for the legacy release v1 of the Client-Server HTTP API.
+     * A constant representing the URI path for Client-Server API endpoints versioned at v1.
     */
    V1 = "/_matrix/client/v1",
    /**
@@ -42,7 +38,11 @@ export enum IdentityPrefix {

 export enum MediaPrefix {
    /**
-     * URI path for the media repo API
+     * A constant representing the URI path for Client-Server API Media endpoints versioned at v1.
     */
-    R0 = "/_matrix/media/r0",
+    V1 = "/_matrix/media/v3",
+    /**
+     * A constant representing the URI path for Client-Server API Media endpoints versioned at v3.
+     */
+    V3 = "/_matrix/media/v3",
 }
@@ -345,10 +345,8 @@ export class InteractiveAuth<T> {
                    sid: this.emailSid,
                    client_secret: this.clientSecret,
                };
-                if (await this.matrixClient.doesServerRequireIdServerParam()) {
-                    const idServerParsedUrl = new URL(this.matrixClient.getIdentityServerUrl()!);
-                    creds.id_server = idServerParsedUrl.host;
-                }
+                const idServerParsedUrl = new URL(this.matrixClient.getIdentityServerUrl()!);
+                creds.id_server = idServerParsedUrl.host;
                authDict = {
                    type: EMAIL_STAGE_TYPE,
                    // TODO: Remove `threepid_creds` once servers support proper UIA
@@ -50,6 +50,7 @@ export * from "./service-types";
 export * from "./store/memory";
 export * from "./store/indexeddb";
 export * from "./crypto/store/memory-crypto-store";
+export * from "./crypto/store/localStorage-crypto-store";
 export * from "./crypto/store/indexeddb-crypto-store";
 export type { OutgoingRoomKeyRequest } from "./crypto/store/base";
 export * from "./content-repo";
@@ -59,6 +60,18 @@ export * from "./@types/PushRules";
 export * from "./@types/partials";
 export * from "./@types/requests";
 export * from "./@types/search";
+export * from "./@types/beacon";
+export * from "./@types/topic";
+export * from "./@types/location";
+export * from "./@types/threepids";
+export * from "./@types/auth";
+export * from "./@types/polls";
+export * from "./@types/local_notifications";
+export * from "./@types/registration";
+export * from "./@types/read_receipts";
+export * from "./@types/crypto";
+export * from "./@types/extensible_events";
+export * from "./@types/IIdentityServerProvider";
 export * from "./models/room-summary";
 export * from "./models/event-status";
 export * as ContentHelpers from "./content-helpers";
@@ -1684,7 +1684,6 @@ const REDACT_KEEP_KEYS = new Set([
 // a map from state event type to the .content keys we keep when an event is redacted
 const REDACT_KEEP_CONTENT_MAP: Record<string, Record<string, 1>> = {
    [EventType.RoomMember]: { membership: 1 },
-    [EventType.RoomCreate]: { creator: 1 },
    [EventType.RoomJoinRules]: { join_rule: 1 },
    [EventType.RoomPowerLevels]: {
        ban: 1,
@@ -146,6 +146,7 @@ export enum RoomEvent {
    CurrentStateUpdated = "Room.CurrentStateUpdated",
    HistoryImportedWithinTimeline = "Room.historyImportedWithinTimeline",
    UnreadNotifications = "Room.UnreadNotifications",
+    Summary = "Room.Summary",
 }

 export type RoomEmittedEvents =
@@ -290,6 +291,14 @@ export type RoomEventHandlerMap = {
    [RoomEvent.HistoryImportedWithinTimeline]: (markerEvent: MatrixEvent, room: Room) => void;
    [RoomEvent.UnreadNotifications]: (unreadNotifications?: NotificationCount, threadId?: string) => void;
    [RoomEvent.TimelineRefresh]: (room: Room, eventTimelineSet: EventTimelineSet) => void;
+    /**
+     * Fires when a new room summary is returned by `/sync`.
+     *
+     * See https://spec.matrix.org/v1.8/client-server-api/#_matrixclientv3sync_roomsummary
+     * for full details
+     * @param summary - the room summary object
+     */
+    [RoomEvent.Summary]: (summary: IRoomSummary) => void;
    [ThreadEvent.New]: (thread: Thread, toStartOfTimeline: boolean) => void;
    /**
     * Fires when a new poll instance is added to the room state
@@ -569,7 +578,7 @@ export class Room extends ReadReceipt<RoomEmittedEvents, RoomEventHandlerMap> {
     */
    public getCreator(): string | null {
        const createEvent = this.currentState.getStateEvents(EventType.RoomCreate, "");
-        return createEvent?.getContent()["creator"] ?? null;
+        return createEvent?.getSender() ?? null;
    }

    /**
@@ -1499,6 +1508,8 @@ export class Room extends ReadReceipt<RoomEmittedEvents, RoomEventHandlerMap> {
                return userId !== this.myUserId;
            });
        }
+
+        this.emit(RoomEvent.Summary, summary);
    }

    /**
@@ -33,7 +33,7 @@ export class CrossSigningIdentity {
        private readonly outgoingRequestProcessor: OutgoingRequestProcessor,
        private readonly secretStorage: ServerSideSecretStorage,
        /** Called if the cross signing keys are imported from the secret storage */
-        private readonly onCrossSigningKeysImport: () => void,
+        private readonly onCrossSigningKeysImport: () => Promise<void>,
    ) {}

    /**
@@ -96,7 +96,7 @@ export class CrossSigningIdentity {
            const request: RustSdkCryptoJs.SignatureUploadRequest = await device.verify();
            await this.outgoingRequestProcessor.makeOutgoingRequest(request);

-            this.onCrossSigningKeysImport();
+            await this.onCrossSigningKeysImport();
        }

        // TODO: we might previously have bootstrapped cross-signing but not completed uploading the keys to the
@@ -75,7 +75,12 @@ export class OutgoingRequestProcessor {
        } else if (msg instanceof SignatureUploadRequest) {
            resp = await this.rawJsonRequest(Method.Post, "/_matrix/client/v3/keys/signatures/upload", {}, msg.body);
        } else if (msg instanceof KeysBackupRequest) {
-            resp = await this.rawJsonRequest(Method.Put, "/_matrix/client/v3/room_keys/keys", {}, msg.body);
+            resp = await this.rawJsonRequest(
+                Method.Put,
+                "/_matrix/client/v3/room_keys/keys",
+                { version: msg.version },
+                msg.body,
+            );
        } else if (msg instanceof ToDeviceRequest) {
            const path =
                `/_matrix/client/v3/sendToDevice/${encodeURIComponent(msg.event_type)}/` +
@@ -83,7 +88,7 @@ export class OutgoingRequestProcessor {
            resp = await this.rawJsonRequest(Method.Put, path, {}, msg.body);
        } else if (msg instanceof RoomMessageRequest) {
            const path =
-                `/_matrix/client/v3/room/${encodeURIComponent(msg.room_id)}/send/` +
+                `/_matrix/client/v3/rooms/${encodeURIComponent(msg.room_id)}/send/` +
                `${encodeURIComponent(msg.event_type)}/${encodeURIComponent(msg.txn_id)}`;
            resp = await this.rawJsonRequest(Method.Put, path, {}, msg.body);
        } else if (msg instanceof SigningKeysUploadRequest) {
@@ -100,7 +105,20 @@ export class OutgoingRequestProcessor {
        }

        if (msg.id) {
-            await this.olmMachine.markRequestAsSent(msg.id, msg.type, resp);
+            try {
+                await this.olmMachine.markRequestAsSent(msg.id, msg.type, resp);
+            } catch (e) {
+                // Ignore errors which are caused by the olmMachine having been freed. The exact error message depends
+                // on whether we are using a release or develop build of rust-sdk-crypto-wasm.
+                if (
+                    e instanceof Error &&
+                    (e.message === "Attempt to use a moved value" || e.message === "null pointer passed to rust")
+                ) {
+                    logger.log(`Ignoring error '${e.message}': client is likely shutting down`);
+                } else {
+                    throw e;
+                }
+            }
        }
    }

@@ -17,20 +17,64 @@ limitations under the License.
 import { OlmMachine, SignatureVerification } from "@matrix-org/matrix-sdk-crypto-wasm";
 import * as RustSdkCryptoJs from "@matrix-org/matrix-sdk-crypto-wasm";

-import { BackupTrustInfo, Curve25519AuthData, KeyBackupInfo } from "../crypto-api/keybackup";
+import { BackupTrustInfo, Curve25519AuthData, KeyBackupCheck, KeyBackupInfo } from "../crypto-api/keybackup";
+import { logger } from "../logger";
+import { ClientPrefix, IHttpOpts, MatrixError, MatrixHttpApi, Method } from "../http-api";
+import { CryptoEvent } from "../crypto";
+import { TypedEventEmitter } from "../models/typed-event-emitter";
+import { encodeUri } from "../utils";
+import { OutgoingRequestProcessor } from "./OutgoingRequestProcessor";
+import { sleep } from "../utils";
+
+/** Authentification of the backup info, depends on algorithm */
+type AuthData = KeyBackupInfo["auth_data"];
+
+/**
+ * Holds information of a created keybackup.
+ * Useful to get the generated private key material and save it securely somewhere.
+ */
+interface KeyBackupCreationInfo {
+    version: string;
+    algorithm: string;
+    authData: AuthData;
+    decryptionKey: RustSdkCryptoJs.BackupDecryptionKey;
+}

 /**
 * @internal
 */
-export class RustBackupManager {
-    public constructor(private readonly olmMachine: OlmMachine) {}
+export class RustBackupManager extends TypedEventEmitter<RustBackupCryptoEvents, RustBackupCryptoEventMap> {
+    /** Have we checked if there is a backup on the server which we can use */
+    private checkedForBackup = false;
+    private activeBackupVersion: string | null = null;
+    private stopped = false;
+
+    /** whether {@link backupKeysLoop} is currently running */
+    private backupKeysLoopRunning = false;
+
+    public constructor(
+        private readonly olmMachine: OlmMachine,
+        private readonly http: MatrixHttpApi<IHttpOpts & { onlyData: true }>,
+        private readonly outgoingRequestProcessor: OutgoingRequestProcessor,
+    ) {
+        super();
+    }
+
+    /**
+     * Tells the RustBackupManager to stop.
+     * The RustBackupManager is scheduling background uploads of keys to the backup, this
+     * call allows to cancel the process when the client is stoppped.
+     */
+    public stop(): void {
+        this.stopped = true;
+    }

    /**
     * Get the backup version we are currently backing up to, if any
     */
    public async getActiveBackupVersion(): Promise<string | null> {
-        // TODO stub
-        return null;
+        if (!this.olmMachine.isBackupEnabled()) return null;
+        return this.activeBackupVersion;
    }

    /**
@@ -52,4 +96,287 @@ export class RustBackupManager {
            trusted: signatureVerification.trusted(),
        };
    }
+
+    /**
+     * Re-check the key backup and enable/disable it as appropriate.
+     *
+     * @param force - whether we should force a re-check even if one has already happened.
+     */
+    public checkKeyBackupAndEnable(force: boolean): Promise<KeyBackupCheck | null> {
+        if (!force && this.checkedForBackup) {
+            return Promise.resolve(null);
+        }
+
+        // make sure there is only one check going on at a time
+        if (!this.keyBackupCheckInProgress) {
+            this.keyBackupCheckInProgress = this.doCheckKeyBackup().finally(() => {
+                this.keyBackupCheckInProgress = null;
+            });
+        }
+        return this.keyBackupCheckInProgress;
+    }
+    private keyBackupCheckInProgress: Promise<KeyBackupCheck | null> | null = null;
+
+    /** Helper for `checkKeyBackup` */
+    private async doCheckKeyBackup(): Promise<KeyBackupCheck | null> {
+        logger.log("Checking key backup status...");
+        let backupInfo: KeyBackupInfo | null = null;
+        try {
+            backupInfo = await this.requestKeyBackupVersion();
+        } catch (e) {
+            logger.warn("Error checking for active key backup", e);
+            return null;
+        }
+        this.checkedForBackup = true;
+
+        if (backupInfo && !backupInfo.version) {
+            logger.warn("active backup lacks a useful 'version'; ignoring it");
+        }
+
+        const activeVersion = await this.getActiveBackupVersion();
+
+        if (!backupInfo) {
+            if (activeVersion !== null) {
+                logger.log("No key backup present on server: disabling key backup");
+                await this.disableKeyBackup();
+            } else {
+                logger.log("No key backup present on server: not enabling key backup");
+            }
+            return null;
+        }
+
+        const trustInfo = await this.isKeyBackupTrusted(backupInfo);
+
+        if (!trustInfo.trusted) {
+            if (activeVersion !== null) {
+                logger.log("Key backup present on server but not trusted: disabling key backup");
+                await this.disableKeyBackup();
+            } else {
+                logger.log("Key backup present on server but not trusted: not enabling key backup");
+            }
+        } else {
+            if (activeVersion === null) {
+                logger.log(`Found usable key backup v${backupInfo.version}: enabling key backups`);
+                await this.enableKeyBackup(backupInfo);
+            } else if (activeVersion !== backupInfo.version) {
+                logger.log(`On backup version ${activeVersion} but found version ${backupInfo.version}: switching.`);
+                // This will remove any pending backup request, remove the backup key and reset the backup state of each room key we have.
+                await this.disableKeyBackup();
+                // Enabling will now trigger re-upload of all the keys
+                await this.enableKeyBackup(backupInfo);
+            } else {
+                logger.log(`Backup version ${backupInfo.version} still current`);
+            }
+        }
+        return { backupInfo, trustInfo };
+    }
+
+    private async enableKeyBackup(backupInfo: KeyBackupInfo): Promise<void> {
+        // we know for certain it must be a Curve25519 key, because we have verified it and only Curve25519
+        // keys can be verified.
+        //
+        // we also checked it has a valid `version`.
+        await this.olmMachine.enableBackupV1(
+            (backupInfo.auth_data as Curve25519AuthData).public_key,
+            backupInfo.version!,
+        );
+        this.activeBackupVersion = backupInfo.version!;
+
+        this.emit(CryptoEvent.KeyBackupStatus, true);
+
+        this.backupKeysLoop();
+    }
+
+    /**
+     * Restart the backup key loop if there is an active trusted backup.
+     * Doesn't try to check the backup server side. To be called when a new
+     * megolm key is known locally.
+     */
+    public async maybeUploadKey(): Promise<void> {
+        if (this.activeBackupVersion != null) {
+            this.backupKeysLoop();
+        }
+    }
+
+    private async disableKeyBackup(): Promise<void> {
+        await this.olmMachine.disableBackup();
+        this.activeBackupVersion = null;
+        this.emit(CryptoEvent.KeyBackupStatus, false);
+    }
+
+    private async backupKeysLoop(maxDelay = 10000): Promise<void> {
+        if (this.backupKeysLoopRunning) {
+            logger.log(`Backup loop already running`);
+            return;
+        }
+        this.backupKeysLoopRunning = true;
+
+        logger.log(`Starting loop for ${this.activeBackupVersion}.`);
+
+        // wait between 0 and `maxDelay` seconds, to avoid backup
+        // requests from different clients hitting the server all at
+        // the same time when a new key is sent
+        const delay = Math.random() * maxDelay;
+        await sleep(delay);
+
+        try {
+            let numFailures = 0; // number of consecutive network failures for exponential backoff
+
+            while (!this.stopped) {
+                // Get a batch of room keys to upload
+                const request: RustSdkCryptoJs.KeysBackupRequest | null = await this.olmMachine.backupRoomKeys();
+
+                if (!request || this.stopped || !this.activeBackupVersion) {
+                    logger.log(`Ending loop for ${this.activeBackupVersion}.`);
+                    return;
+                }
+
+                try {
+                    await this.outgoingRequestProcessor.makeOutgoingRequest(request);
+                    numFailures = 0;
+
+                    const keyCount: RustSdkCryptoJs.RoomKeyCounts = await this.olmMachine.roomKeyCounts();
+                    const remaining = keyCount.total - keyCount.backedUp;
+                    this.emit(CryptoEvent.KeyBackupSessionsRemaining, remaining);
+                } catch (err) {
+                    numFailures++;
+                    logger.error("Error processing backup request for rust crypto-sdk", err);
+                    if (err instanceof MatrixError) {
+                        const errCode = err.data.errcode;
+                        if (errCode == "M_NOT_FOUND" || errCode == "M_WRONG_ROOM_KEYS_VERSION") {
+                            await this.disableKeyBackup();
+                            this.emit(CryptoEvent.KeyBackupFailed, err.data.errcode!);
+                            // There was an active backup and we are out of sync with the server
+                            // force a check server side
+                            this.backupKeysLoopRunning = false;
+                            this.checkKeyBackupAndEnable(true);
+                            return;
+                        } else if (errCode == "M_LIMIT_EXCEEDED") {
+                            // wait for that and then continue?
+                            const waitTime = err.data.retry_after_ms;
+                            if (waitTime > 0) {
+                                sleep(waitTime);
+                                continue;
+                            } // else go to the normal backoff
+                        }
+                    }
+
+                    // Some other errors (mx, network, or CORS or invalid urls?) anyhow backoff
+                    // exponential backoff if we have failures
+                    await sleep(1000 * Math.pow(2, Math.min(numFailures - 1, 4)));
+                }
+            }
+        } finally {
+            this.backupKeysLoopRunning = false;
+        }
+    }
+
+    /**
+     * Get information about the current key backup from the server
+     *
+     * @returns Information object from API or null if there is no active backup.
+     */
+    private async requestKeyBackupVersion(): Promise<KeyBackupInfo | null> {
+        try {
+            return await this.http.authedRequest<KeyBackupInfo>(
+                Method.Get,
+                "/room_keys/version",
+                undefined,
+                undefined,
+                {
+                    prefix: ClientPrefix.V3,
+                },
+            );
+        } catch (e) {
+            if ((<MatrixError>e).errcode === "M_NOT_FOUND") {
+                return null;
+            } else {
+                throw e;
+            }
+        }
+    }
+
+    /**
+     * Creates a new key backup by generating a new random private key.
+     *
+     * If there is an existing backup server side it will be deleted and replaced
+     * by the new one.
+     *
+     * @param signObject - Method that should sign the backup with existing device and
+     * existing identity.
+     * @returns a KeyBackupCreationInfo - All information related to the backup.
+     */
+    public async setupKeyBackup(signObject: (authData: AuthData) => Promise<void>): Promise<KeyBackupCreationInfo> {
+        // Clean up any existing backup
+        await this.deleteAllKeyBackupVersions();
+
+        const randomKey = RustSdkCryptoJs.BackupDecryptionKey.createRandomKey();
+        const pubKey = randomKey.megolmV1PublicKey;
+
+        const authData = { public_key: pubKey.publicKeyBase64 };
+
+        await signObject(authData);
+
+        const res = await this.http.authedRequest<{ version: string }>(
+            Method.Post,
+            "/room_keys/version",
+            undefined,
+            {
+                algorithm: pubKey.algorithm,
+                auth_data: authData,
+            },
+            {
+                prefix: ClientPrefix.V3,
+            },
+        );
+
+        this.olmMachine.saveBackupDecryptionKey(randomKey, res.version);
+
+        return {
+            version: res.version,
+            algorithm: pubKey.algorithm,
+            authData: authData,
+            decryptionKey: randomKey,
+        };
+    }
+
+    /**
+     * Deletes all key backups.
+     *
+     * Will call the API to delete active backup until there is no more present.
+     */
+    public async deleteAllKeyBackupVersions(): Promise<void> {
+        // there could be several backup versions. Delete all to be safe.
+        let current = (await this.requestKeyBackupVersion())?.version ?? null;
+        while (current != null) {
+            await this.deleteKeyBackupVersion(current);
+            current = (await this.requestKeyBackupVersion())?.version ?? null;
+        }
+
+        // XXX: Should this also update Secret Storage and delete any existing keys?
+    }
+
+    /**
+     * Deletes the given key backup.
+     *
+     * @param version - The backup version to delete.
+     */
+    public async deleteKeyBackupVersion(version: string): Promise<void> {
+        logger.debug(`deleteKeyBackupVersion v:${version}`);
+        const path = encodeUri("/room_keys/version/$version", { $version: version });
+        await this.http.authedRequest<void>(Method.Delete, path, undefined, undefined, {
+            prefix: ClientPrefix.V3,
+        });
+    }
 }
+
+export type RustBackupCryptoEvents =
+    | CryptoEvent.KeyBackupStatus
+    | CryptoEvent.KeyBackupSessionsRemaining
+    | CryptoEvent.KeyBackupFailed;
+
+export type RustBackupCryptoEventMap = {
+    [CryptoEvent.KeyBackupStatus]: (enabled: boolean) => void;
+    [CryptoEvent.KeyBackupSessionsRemaining]: (remaining: number) => void;
+    [CryptoEvent.KeyBackupFailed]: (errCode: string) => void;
+};
@@ -14,6 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */

+import anotherjson from "another-json";
 import * as RustSdkCryptoJs from "@matrix-org/matrix-sdk-crypto-wasm";

 import type { IEventDecryptionResult, IMegolmSessionData } from "../@types/crypto";
@@ -25,7 +26,6 @@ import { RoomMember } from "../models/room-member";
 import { CryptoBackend, OnSyncCompletedData } from "../common-crypto/CryptoBackend";
 import { logger } from "../logger";
 import { IHttpOpts, MatrixHttpApi, Method } from "../http-api";
-import { UserTrustLevel } from "../crypto/CrossSigning";
 import { RoomEncryptor } from "./RoomEncryptor";
 import { OutgoingRequest, OutgoingRequestProcessor } from "./OutgoingRequestProcessor";
 import { KeyClaimManager } from "./KeyClaimManager";
@@ -42,7 +42,9 @@ import {
    GeneratedSecretStorageKey,
    ImportRoomKeyProgressData,
    ImportRoomKeysOpts,
+    KeyBackupCheck,
    KeyBackupInfo,
+    UserVerificationStatus,
    VerificationRequest,
 } from "../crypto-api";
 import { deviceKeysToDeviceMap, rustDeviceToJsDevice } from "./device-converter";
@@ -54,14 +56,23 @@ import { secretStorageContainsCrossSigningKeys } from "./secret-storage";
 import { keyFromPassphrase } from "../crypto/key_passphrase";
 import { encodeRecoveryKey } from "../crypto/recoverykey";
 import { crypto } from "../crypto/crypto";
-import { RustVerificationRequest, verificationMethodIdentifierToMethod } from "./verification";
-import { EventType, MsgType } from "../@types/event";
+import { isVerificationEvent, RustVerificationRequest, verificationMethodIdentifierToMethod } from "./verification";
+import { EventType } from "../@types/event";
 import { CryptoEvent } from "../crypto";
 import { TypedEventEmitter } from "../models/typed-event-emitter";
-import { RustBackupManager } from "./backup";
+import { RustBackupCryptoEventMap, RustBackupCryptoEvents, RustBackupManager } from "./backup";
+import { TypedReEmitter } from "../ReEmitter";
+import { randomString } from "../randomstring";
+import { ClientStoppedError } from "../errors";
+import { ISignatures } from "../@types/signed";

 const ALL_VERIFICATION_METHODS = ["m.sas.v1", "m.qr_code.scan.v1", "m.qr_code.show.v1", "m.reciprocate.v1"];

+interface ISignableObject {
+    signatures?: ISignatures;
+    unsigned?: object;
+}
+
 /**
 * An implementation of {@link CryptoBackend} using the Rust matrix-sdk-crypto.
 *
@@ -84,8 +95,9 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
    private keyClaimManager: KeyClaimManager;
    private outgoingRequestProcessor: OutgoingRequestProcessor;
    private crossSigningIdentity: CrossSigningIdentity;
+    private readonly backupManager: RustBackupManager;

-    public readonly backupManager: RustBackupManager;
+    private readonly reemitter = new TypedReEmitter<RustCryptoEvents, RustCryptoEventMap>(this);

    public constructor(
        /** The `OlmMachine` from the underlying rust crypto sdk. */
@@ -114,11 +126,18 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
        this.outgoingRequestProcessor = new OutgoingRequestProcessor(olmMachine, http);
        this.keyClaimManager = new KeyClaimManager(olmMachine, this.outgoingRequestProcessor);
        this.eventDecryptor = new EventDecryptor(olmMachine);
-        this.backupManager = new RustBackupManager(olmMachine);
+
+        this.backupManager = new RustBackupManager(olmMachine, http, this.outgoingRequestProcessor);
+        this.reemitter.reEmit(this.backupManager, [
+            CryptoEvent.KeyBackupStatus,
+            CryptoEvent.KeyBackupSessionsRemaining,
+            CryptoEvent.KeyBackupFailed,
+        ]);

        // Fire if the cross signing keys are imported from the secret storage
-        const onCrossSigningKeysImport = (): void => {
-            this.emit(CryptoEvent.UserTrustStatusChanged, this.userId, this.checkUserTrust(this.userId));
+        const onCrossSigningKeysImport = async (): Promise<void> => {
+            const newVerification = await this.getUserVerificationStatus(this.userId);
+            this.emit(CryptoEvent.UserTrustStatusChanged, this.userId, newVerification);
        };
        this.crossSigningIdentity = new CrossSigningIdentity(
            olmMachine,
@@ -128,6 +147,20 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
        );
    }

+    /**
+     * Return the OlmMachine only if {@link RustCrypto#stop} has not been called.
+     *
+     * This allows us to better handle race conditions where the client is stopped before or during a crypto API call.
+     *
+     * @throws ClientStoppedError if {@link RustCrypto#stop} has been called.
+     */
+    private getOlmMachineOrThrow(): RustSdkCryptoJs.OlmMachine {
+        if (this.stopped) {
+            throw new ClientStoppedError();
+        }
+        return this.olmMachine;
+    }
+
    ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
    //
    // CryptoBackend implementation
@@ -143,6 +176,7 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
        this.stopped = true;

        this.keyClaimManager.stop();
+        this.backupManager.stop();

        // make sure we close() the OlmMachine; doing so means that all the Rust objects will be
        // cleaned up; in particular, the indexeddb connections will be closed, which means they
@@ -192,9 +226,14 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
        return ret as IEncryptedEventInfo;
    }

-    public checkUserTrust(userId: string): UserTrustLevel {
-        // TODO
-        return new UserTrustLevel(false, false, false);
+    /**
+     * Implementation of {@link CryptoBackend#checkUserTrust}.
+     *
+     * Stub for backwards compatibility.
+     *
+     */
+    public checkUserTrust(userId: string): UserVerificationStatus {
+        return new UserVerificationStatus(false, false, false);
    }

    /**
@@ -218,7 +257,6 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
     * The function is stub to keep the compatibility with the old crypto.
     * More information: https://github.com/vector-im/element-web/issues/25648
     *
-     *
     * Implementation of {@link CryptoBackend#checkOwnCrossSigningTrust}
     */
    public async checkOwnCrossSigningTrust(): Promise<void> {
@@ -233,20 +271,6 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv

    public globalBlacklistUnverifiedDevices = false;

-    /**
-     * Implementation of {@link CryptoApi.userHasCrossSigningKeys}.
-     */
-    public async userHasCrossSigningKeys(): Promise<boolean> {
-        const userId = new RustSdkCryptoJs.UserId(this.userId);
-        /* make sure we have an *up-to-date* idea of the user's cross-signing keys. This is important, because if we
-         * return "false" here, we will end up generating new cross-signing keys and replacing the existing ones.
-         */
-        const request = this.olmMachine.queryKeysForUsers([userId]);
-        await this.outgoingRequestProcessor.makeOutgoingRequest(request);
-        const userIdentity = await this.olmMachine.getIdentity(userId);
-        return userIdentity !== undefined;
-    }
-
    public prepareToEncrypt(room: Room): void {
        const encryptor = this.roomEncryptors[room.roomId];

@@ -278,6 +302,47 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
        });
    }

+    /**
+     * Implementation of {@link CryptoApi.userHasCrossSigningKeys}.
+     */
+    public async userHasCrossSigningKeys(userId = this.userId, downloadUncached = false): Promise<boolean> {
+        // TODO: could probably do with a more efficient way of doing this than returning the whole set and searching
+        const rustTrackedUsers: Set<RustSdkCryptoJs.UserId> = await this.olmMachine.trackedUsers();
+        let rustTrackedUser: RustSdkCryptoJs.UserId | undefined;
+        for (const u of rustTrackedUsers) {
+            if (userId === u.toString()) {
+                rustTrackedUser = u;
+                break;
+            }
+        }
+
+        if (rustTrackedUser !== undefined) {
+            if (userId === this.userId) {
+                /* make sure we have an *up-to-date* idea of the user's cross-signing keys. This is important, because if we
+                 * return "false" here, we will end up generating new cross-signing keys and replacing the existing ones.
+                 */
+                const request = this.olmMachine.queryKeysForUsers([rustTrackedUser]);
+                await this.outgoingRequestProcessor.makeOutgoingRequest(request);
+            }
+            const userIdentity = await this.olmMachine.getIdentity(rustTrackedUser);
+            return userIdentity !== undefined;
+        } else if (downloadUncached) {
+            // Download the cross signing keys and check if the master key is available
+            const keyResult = await this.downloadDeviceList(new Set([userId]));
+            const keys = keyResult.master_keys?.[userId];
+
+            // No master key
+            if (!keys) return false;
+
+            // `keys` is an object with { [`ed25519:${pubKey}`]: pubKey }
+            // We assume only a single key, and we want the bare form without type
+            // prefix, so we select the values.
+            return Boolean(Object.values(keys.keys)[0]);
+        } else {
+            return false;
+        }
+    }
+
    /**
     * Get the device information for the given list of users.
     *
@@ -422,6 +487,18 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
        });
    }

+    /**
+     * Implementation of {@link CryptoApi#getUserVerificationStatus}.
+     */
+    public async getUserVerificationStatus(userId: string): Promise<UserVerificationStatus> {
+        const userIdentity: RustSdkCryptoJs.UserIdentity | RustSdkCryptoJs.OwnUserIdentity | undefined =
+            await this.olmMachine.getIdentity(new RustSdkCryptoJs.UserId(userId));
+        if (userIdentity === undefined) {
+            return new UserVerificationStatus(false, false, false);
+        }
+        return new UserVerificationStatus(userIdentity.isVerified(), false, false);
+    }
+
    /**
     * Implementation of {@link CryptoApi#isCrossSigningReady}
     */
@@ -502,6 +579,7 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
    public async bootstrapSecretStorage({
        createSecretStorageKey,
        setupNewSecretStorage,
+        setupNewKeyBackup,
    }: CreateSecretStorageOpts = {}): Promise<void> {
        // If an AES Key is already stored in the secret storage and setupNewSecretStorage is not set
        // we don't want to create a new key
@@ -545,6 +623,10 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
            await this.secretStorage.store("m.cross_signing.master", crossSigningPrivateKeys.masterKey);
            await this.secretStorage.store("m.cross_signing.user_signing", crossSigningPrivateKeys.userSigningKey);
            await this.secretStorage.store("m.cross_signing.self_signing", crossSigningPrivateKeys.self_signing_key);
+
+            if (setupNewKeyBackup) {
+                await this.resetKeyBackup();
+            }
        }
    }

@@ -597,16 +679,17 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
     * Implementation of {@link CryptoApi#getCrossSigningStatus}
     */
    public async getCrossSigningStatus(): Promise<CrossSigningStatus> {
-        const userIdentity: RustSdkCryptoJs.OwnUserIdentity | null = await this.olmMachine.getIdentity(
+        const userIdentity: RustSdkCryptoJs.OwnUserIdentity | null = await this.getOlmMachineOrThrow().getIdentity(
            new RustSdkCryptoJs.UserId(this.userId),
        );
+
        const publicKeysOnDevice =
            Boolean(userIdentity?.masterKey) &&
            Boolean(userIdentity?.selfSigningKey) &&
            Boolean(userIdentity?.userSigningKey);
        const privateKeysInSecretStorage = await secretStorageContainsCrossSigningKeys(this.secretStorage);
        const crossSigningStatus: RustSdkCryptoJs.CrossSigningStatus | null =
-            await this.olmMachine.crossSigningStatus();
+            await this.getOlmMachineOrThrow().crossSigningStatus();

        return {
            publicKeysOnDevice,
@@ -704,6 +787,62 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
        }
    }

+    /**
+     * Implementation of {@link CryptoApi#requestVerificationDM}
+     */
+    public async requestVerificationDM(userId: string, roomId: string): Promise<VerificationRequest> {
+        const userIdentity: RustSdkCryptoJs.UserIdentity | undefined = await this.olmMachine.getIdentity(
+            new RustSdkCryptoJs.UserId(userId),
+        );
+
+        if (!userIdentity) throw new Error(`unknown userId ${userId}`);
+
+        // Transform the verification methods into rust objects
+        const methods = this._supportedVerificationMethods.map((method) =>
+            verificationMethodIdentifierToMethod(method),
+        );
+        // Get the request content to send to the DM room
+        const verificationEventContent: string = await userIdentity.verificationRequestContent(methods);
+
+        // Send the request content to send to the DM room
+        const eventId = await this.sendVerificationRequestContent(roomId, verificationEventContent);
+
+        // Get a verification request
+        const request: RustSdkCryptoJs.VerificationRequest = await userIdentity.requestVerification(
+            new RustSdkCryptoJs.RoomId(roomId),
+            new RustSdkCryptoJs.EventId(eventId),
+            methods,
+        );
+        return new RustVerificationRequest(request, this.outgoingRequestProcessor, this._supportedVerificationMethods);
+    }
+
+    /**
+     * Send the verification content to a room
+     * See https://spec.matrix.org/v1.7/client-server-api/#put_matrixclientv3roomsroomidsendeventtypetxnid
+     *
+     * Prefer to use {@link OutgoingRequestProcessor.makeOutgoingRequest} when dealing with {@link RustSdkCryptoJs.RoomMessageRequest}
+     *
+     * @param roomId - the targeted room
+     * @param verificationEventContent - the request body.
+     *
+     * @returns the event id
+     */
+    private async sendVerificationRequestContent(roomId: string, verificationEventContent: string): Promise<string> {
+        const txId = randomString(32);
+        // Send the verification request content to the DM room
+        const { event_id: eventId } = await this.http.authedRequest<{ event_id: string }>(
+            Method.Put,
+            `/_matrix/client/v3/rooms/${encodeURIComponent(roomId)}/send/m.room.message/${encodeURIComponent(txId)}`,
+            undefined,
+            verificationEventContent,
+            {
+                prefix: "",
+            },
+        );
+
+        return eventId;
+    }
+
    /**
     * The verification methods we offer to the other side during an interactive verification.
     */
@@ -819,6 +958,64 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
        return await this.backupManager.isKeyBackupTrusted(info);
    }

+    /**
+     * Force a re-check of the key backup and enable/disable it as appropriate.
+     *
+     * Implementation of {@link Crypto.CryptoApi.checkKeyBackupAndEnable}.
+     */
+    public async checkKeyBackupAndEnable(): Promise<KeyBackupCheck | null> {
+        return await this.backupManager.checkKeyBackupAndEnable(true);
+    }
+
+    /**
+     * Implementation of {@link CryptoApi#deleteKeyBackupVersion}.
+     */
+    public async deleteKeyBackupVersion(version: string): Promise<void> {
+        await this.backupManager.deleteKeyBackupVersion(version);
+    }
+
+    /**
+     * Implementation of {@link CryptoApi#resetKeyBackup}.
+     */
+    public async resetKeyBackup(): Promise<void> {
+        const backupInfo = await this.backupManager.setupKeyBackup((o) => this.signObject(o));
+
+        // we want to store the private key in 4S
+        // need to check if 4S is set up?
+        if (await this.secretStorageHasAESKey()) {
+            await this.secretStorage.store("m.megolm_backup.v1", backupInfo.decryptionKey.toBase64());
+        }
+
+        // we can check and start async
+        this.checkKeyBackupAndEnable();
+    }
+
+    /**
+     * Signs the given object with the current device and current identity (if available).
+     * As defined in {@link https://spec.matrix.org/v1.8/appendices/#signing-json | Signing JSON}.
+     *
+     * @param obj - The object to sign
+     */
+    private async signObject<T extends ISignableObject & object>(obj: T): Promise<void> {
+        const sigs = new Map(Object.entries(obj.signatures || {}));
+        const unsigned = obj.unsigned;
+
+        delete obj.signatures;
+        delete obj.unsigned;
+
+        const userSignatures = sigs.get(this.userId) || {};
+
+        const canonalizedJson = anotherjson.stringify(obj);
+        const signatures: RustSdkCryptoJs.Signatures = await this.olmMachine.sign(canonalizedJson);
+
+        const map = JSON.parse(signatures.asJSON());
+
+        sigs.set(this.userId, { ...userSignatures, ...map[this.userId] });
+
+        if (unsigned !== undefined) obj.unsigned = unsigned;
+        obj.signatures = Object.fromEntries(sigs.entries());
+    }
+
    ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
    //
    // SyncCryptoCallbacks implementation
@@ -1008,9 +1205,11 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
        for (const key of keys) {
            this.onRoomKeyUpdated(key);
        }
+        this.backupManager.maybeUploadKey();
    }

    private onRoomKeyUpdated(key: RustSdkCryptoJs.RoomKeyInfo): void {
+        if (this.stopped) return;
        logger.debug(`Got update for session ${key.senderKey.toBase64()}|${key.sessionId} in ${key.roomId.toString()}`);
        const pendingList = this.eventDecryptor.getEventsPendingRoomKey(key);
        if (pendingList.length === 0) return;
@@ -1040,15 +1239,13 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
     * @param event - live event
     */
    public async onLiveEventFromSync(event: MatrixEvent): Promise<void> {
-        // Ignore state event
-        if (event.isState()) return;
+        // Ignore state event or remote echo
+        // transaction_id is provided in case of remote echo {@link https://spec.matrix.org/v1.7/client-server-api/#local-echo}
+        if (event.isState() || !!event.getUnsigned().transaction_id) return;

        const processEvent = async (evt: MatrixEvent): Promise<void> => {
-            // Process only key validation request
-            if (
-                evt.getType() === EventType.RoomMessage &&
-                evt.getContent().msgtype === MsgType.KeyVerificationRequest
-            ) {
+            // Process only verification event
+            if (isVerificationEvent(event)) {
                await this.onKeyVerificationRequest(evt);
            }
        };
@@ -1058,6 +1255,7 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
            // 5 mins
            const TIMEOUT_DELAY = 5 * 60 * 1000;

+            // After 5mins, we are not expecting the event to be decrypted
            const timeoutId = setTimeout(() => event.off(MatrixEventEvent.Decrypted, onDecrypted), TIMEOUT_DELAY);

            const onDecrypted = (decryptedEvent: MatrixEvent, error?: Error): void => {
@@ -1067,7 +1265,6 @@ export class RustCrypto extends TypedEventEmitter<RustCryptoEvents, RustCryptoEv
                event.off(MatrixEventEvent.Decrypted, onDecrypted);
                processEvent(decryptedEvent);
            };
-            // After 5mins, we are not expecting the event to be decrypted

            event.on(MatrixEventEvent.Decrypted, onDecrypted);
        } else {
@@ -1231,7 +1428,10 @@ class EventDecryptor {
    }
 }

-type RustCryptoEvents = CryptoEvent.VerificationRequestReceived | CryptoEvent.UserTrustStatusChanged;
+type RustCryptoEvents =
+    | CryptoEvent.VerificationRequestReceived
+    | CryptoEvent.UserTrustStatusChanged
+    | RustBackupCryptoEvents;

 type RustCryptoEventMap = {
    /**
@@ -1242,5 +1442,5 @@ type RustCryptoEventMap = {
    /**
     * Fires when the cross signing keys are imported during {@link CryptoApi#bootstrapCrossSigning}
     */
-    [CryptoEvent.UserTrustStatusChanged]: (userId: string, userTrustLevel: UserTrustLevel) => void;
-};
+    [CryptoEvent.UserTrustStatusChanged]: (userId: string, userTrustLevel: UserVerificationStatus) => void;
+} & RustBackupCryptoEventMap;
@@ -31,6 +31,8 @@ import {
 import { TypedEventEmitter } from "../models/typed-event-emitter";
 import { OutgoingRequest, OutgoingRequestProcessor } from "./OutgoingRequestProcessor";
 import { TypedReEmitter } from "../ReEmitter";
+import { MatrixEvent } from "../models/event";
+import { EventType, MsgType } from "../@types/event";

 /**
 * An incoming, or outgoing, request to verify a user or a device via cross-signing.
@@ -700,3 +702,28 @@ export function verificationMethodIdentifierToMethod(method: string): RustSdkCry
    }
    return meth;
 }
+
+/**
+ * Return true if the event's type matches that of an in-room verification event
+ *
+ * @param event - MatrixEvent
+ * @returns
+ *
+ * @internal
+ */
+export function isVerificationEvent(event: MatrixEvent): boolean {
+    switch (event.getType()) {
+        case EventType.KeyVerificationCancel:
+        case EventType.KeyVerificationDone:
+        case EventType.KeyVerificationMac:
+        case EventType.KeyVerificationStart:
+        case EventType.KeyVerificationKey:
+        case EventType.KeyVerificationReady:
+        case EventType.KeyVerificationAccept:
+            return true;
+        case EventType.RoomMessage:
+            return event.getContent().msgtype === MsgType.KeyVerificationRequest;
+        default:
+            return false;
+    }
+}
@@ -649,18 +649,11 @@ export class SyncApi {
            this.opts.lazyLoadMembers = false;
        }
        if (this.opts.lazyLoadMembers) {
-            debuglog("Checking server lazy load support...");
-            const supported = await this.client.doesServerSupportLazyLoading();
-            if (supported) {
-                debuglog("Enabling lazy load on sync filter...");
-                if (!this.opts.filter) {
-                    this.opts.filter = this.buildDefaultFilter();
-                }
-                this.opts.filter.setLazyLoadMembers(true);
-            } else {
-                debuglog("LL: lazy loading requested but not supported " + "by server, so disabling");
-                this.opts.lazyLoadMembers = false;
+            debuglog("Enabling lazy load on sync filter...");
+            if (!this.opts.filter) {
+                this.opts.filter = this.buildDefaultFilter();
            }
+            this.opts.filter.setLazyLoadMembers(true);
        }
        // need to vape the store when enabling LL and wasn't enabled before
        debuglog("Checking whether lazy loading has changed in store...");
@@ -0,0 +1,20 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+/**
+ * The minimum Matrix specification version the js-sdk supports.
+ */
+export const MINIMUM_MATRIX_VERSION = "v1.1";
@@ -2220,7 +2220,7 @@ export class MatrixCall extends TypedEventEmitter<CallEvent, CallEventHandlerMap
            CallEvent.Error,
            new CallError(
                CallErrorCode.NoUserMedia,
-                "Couldn't start capturing media! Is your microphone set up and " + "does this app have permission?",
+                "Couldn't start capturing media! Is your microphone set up and does this app have permission?",
                err,
            ),
            this,
@@ -2228,6 +2228,22 @@ export class MatrixCall extends TypedEventEmitter<CallEvent, CallEventHandlerMap
        this.terminate(CallParty.Local, CallErrorCode.NoUserMedia, false);
    };

+    private placeCallFailed = (err: Error): void => {
+        if (this.successor) {
+            this.successor.placeCallFailed(err);
+            return;
+        }
+
+        logger.warn(`Call ${this.callId} placeCallWithCallFeeds() failed - ending call`, err);
+
+        this.emit(
+            CallEvent.Error,
+            new CallError(CallErrorCode.IceFailed, "Couldn't start call! Invalid ICE server configuration.", err),
+            this,
+        );
+        this.terminate(CallParty.Local, CallErrorCode.IceFailed, false);
+    };
+
    private onIceConnectionStateChanged = (): void => {
        if (this.callHasEnded()) {
            return; // because ICE can still complete as we're ending the call
@@ -2775,6 +2791,7 @@ export class MatrixCall extends TypedEventEmitter<CallEvent, CallEventHandlerMap
        }
        this.state = CallState.WaitLocalMedia;

+        let callFeed: CallFeed;
        try {
            const stream = await this.client.getMediaHandler().getUserMediaStream(audio, video);

@@ -2783,7 +2800,7 @@ export class MatrixCall extends TypedEventEmitter<CallEvent, CallEventHandlerMap
            setTracksEnabled(stream.getAudioTracks(), true);
            setTracksEnabled(stream.getVideoTracks(), true);

-            const callFeed = new CallFeed({
+            callFeed = new CallFeed({
                client: this.client,
                roomId: this.roomId,
                userId: this.client.getUserId()!,
@@ -2793,11 +2810,17 @@ export class MatrixCall extends TypedEventEmitter<CallEvent, CallEventHandlerMap
                audioMuted: false,
                videoMuted: false,
            });
-            await this.placeCallWithCallFeeds([callFeed]);
        } catch (e) {
            this.getUserMediaFailed(<Error>e);
            return;
        }
+
+        try {
+            await this.placeCallWithCallFeeds([callFeed]);
+        } catch (e) {
+            this.placeCallFailed(<Error>e);
+            return;
+        }
    }

    /**
@@ -2834,7 +2857,7 @@ export class MatrixCall extends TypedEventEmitter<CallEvent, CallEventHandlerMap
    private createPeerConnection(): RTCPeerConnection {
        const pc = new window.RTCPeerConnection({
            iceTransportPolicy: this.forceTURN ? "relay" : undefined,
-            iceServers: this.turnServers,
+            iceServers: this.turnServers.length ? this.turnServers : undefined,
            iceCandidatePoolSize: this.client.iceCandidatePoolSize,
            bundlePolicy: "max-bundle",
        });
Author	SHA1	Message	Date
ElementRobot	9fbcef556e	v28.1.0	2023-09-12 16:52:42 +01:00
ElementRobot	b68ad00394	Prepare changelog for v28.1.0	2023-09-12 16:52:40 +01:00
ElementRobot	836238c3ba	v28.1.0-rc.1	2023-09-05 16:51:26 +01:00
ElementRobot	014b29b303	Prepare changelog for v28.1.0-rc.1	2023-09-05 16:51:23 +01:00
Richard van der Hoff	74160806c0	Deprecate `MatrixClient.checkUserTrust` (#3691 ) * New `CryptoApi.getUserVerificationStatus` API * Add `RustCrypto#getUserVerificationStatus` tests --------- Co-authored-by: Florian Duros <florianduros@element.io>	2023-09-05 14:58:10 +00:00
Michael Telatynski	8e0ef98bcc	Provide better error for ICE Server SyntaxError (#3694 ) * Provide better error for ICE Server SyntaxError * Refactor * Add test	2023-09-05 14:18:30 +00:00
Valere	d7831f9e5b	Implement key backup APIs for rust and create backup in `bootstrapSecretStorage` (#3690 ) * new resetKeyBackup API * add delete backup version test * code review * support backup creation in rust * code review	2023-09-05 13:52:49 +00:00
Michael Telatynski	989c5a3dda	Allow calls without ICE/TURN/STUN servers (#3695 )	2023-09-05 12:44:39 +00:00
Richard van der Hoff	0778c4e01e	Re-check key backup after `bootstrapSecretStorage` (#3692 ) Fixes https://github.com/vector-im/element-web/issues/26115	2023-09-05 09:10:58 +00:00
Valere	c65e329101	Deprecate `MatrixClient.{prepare,create}KeyBackupVersion` in favour of new `CryptoApi.resetKeyBackup` API (#3689 ) * new resetKeyBackup API * add delete backup version test * code review * code review	2023-09-04 20:00:28 +00:00
Germain	5ddd453699	Emit summary update event (#3687 ) * Emit summary update event * Add documentation * Update RoomSummary event documentation Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com> --------- Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>	2023-08-31 08:48:16 +00:00
Richard van der Hoff	42d982dd69	`OutgoingRequestProcessor`: do not throw errors if shutting down (#3683 ) * `OutgoingRequestProcessor`: do not throw errors if shutting down * Optimised builds throw a different error	2023-08-30 14:56:06 +00:00
Richard van der Hoff	f406ffd3dd	`RustCrypto.getCrossSigningStatus`: check the client is not stopped (#3682 ) * `RustCrypto.getCrossSigningStatus`: check the client is not stopped Better error handling for the case that a call to `MatrixClient.stop` happens while the call to `getCrossSigningStatus` (or `isCrossSigningReady`) is in flight. * fix up tsdoc	2023-08-30 09:30:31 +00:00
Florian Duros	dec4650d3d	ElementR: Update `CryptoApi.userHasCrossSigningKeys` (#3646 ) * WIP `CryptoApi.getStoredCrossSigningForUser` * Fix QRCode * Add docs and rename * Add tests for `RustCrossSigningInfo.ts` * Do `/keys/query` instead of using `UserIdentity` * Review changes * Get rid of `CrossSigningInfo` * Merge `hasCrossSigningKeysForUser` into `userHasCrossSigningKeys` * Apply suggestions from code review * More review comments --------- Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com> Co-authored-by: Richard van der Hoff <richard@matrix.org>	2023-08-29 11:27:28 +00:00
RiotRobot	4c00b41046	Resetting package fields for development	2023-08-29 10:55:15 +01:00
RiotRobot	a1845ba0ff	Merge branch 'master' into develop	2023-08-29 10:55:09 +01:00
RiotRobot	fb9e258468	v28.0.0	2023-08-29 10:53:33 +01:00
RiotRobot	974723ceef	Prepare changelog for v28.0.0	2023-08-29 10:53:30 +01:00
renovate[bot]	5788d9744b	Update all non-major dependencies (#3671 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2023-08-24 13:01:48 +00:00
Johannes Marbach	65cbbaaf01	Use sender instead of content.creator field on m.room.create events (#3675 ) * Use sender instead of content.creator field on m.room.create events * Restore room_version fields in fixtures * Add test case for undefined sender scenario	2023-08-24 11:58:04 +00:00
renovate[bot]	c5245a887b	Update dependency @types/node to v18.17.6 (#3669 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2023-08-23 13:47:35 +00:00
Charly Nguyen	321679fd63	Add `join_rule` field to /publicRooms response (#3673 ) Signed-off-by: Charly Nguyen <charly.nguyen@nordeck.net>	2023-08-23 13:35:43 +00:00
Michael Weimann	15c679b29e	Improve/fix restoreKeyBackupWithPassword docs (#3674 )	2023-08-23 12:58:10 +00:00
Michael Telatynski	85ba069117	Export de-facto public types out of @types (#3666 ) * Export de-facto public types out of @types * Make typedoc happier	2023-08-22 15:47:22 +00:00
RiotRobot	9b8dcf53ed	v28.0.0-rc.1	2023-08-22 15:18:45 +01:00
RiotRobot	324af3ee67	Prepare changelog for v28.0.0-rc.1	2023-08-22 15:18:42 +01:00
RiotRobot	ec6c0946d4	v27.3.0-rc.1	2023-08-22 15:13:46 +01:00
RiotRobot	e5f480b032	Prepare changelog for v27.3.0-rc.1	2023-08-22 15:13:43 +01:00
Florian Duros	6bf4ed8672	ElementR: Add `CryptoApi.requestVerificationDM` (#3643 ) * Add `CryptoApi.requestVerificationDM` * Fix RoomMessageRequest url * Review changes * Merge fixes * Add BOB test data * `requestVerificationDM` test works against old crypto (encrypted verification request) * Update test data	2023-08-21 14:48:32 +00:00
Valere	c18d691ef5	RustCrypto \| Implement keybackup loop (#3652 ) * Implement `CryptoApi.checkKeyBackup` * Deprecate `MatrixClient.enableKeyBackup`. * fix integ test * more tests * Implement keybackup loop * cleaning * update matrix-sdk-crypto-wasm to 1.2.1 * fix lint * avoid real timer stuff * Simplify test * post merge lint fix * revert change on yarn.lock * code review * Generate test data for exported keys * code review cleaning * cleanup legacy backup loop * Update spec/test-utils/test-data/generate-test-data.py Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com> * Update spec/test-utils/test-data/generate-test-data.py Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com> * update yarn.lock for new wasm bindings --------- Co-authored-by: Richard van der Hoff <richard@matrix.org> Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>	2023-08-17 14:10:57 +00:00
ElementRobot	97cf73bc52	Resetting package fields for development	2023-08-15 13:19:02 +01:00
ElementRobot	aa25103665	Merge branch 'master' into develop	2023-08-15 13:18:59 +01:00
ElementRobot	858db67778	v27.2.0	2023-08-15 13:17:57 +01:00
ElementRobot	e230abee45	Prepare changelog for v27.2.0	2023-08-15 13:17:55 +01:00
Travis Ralston	8c16d69f3c	Set minimum supported Matrix 1.1 version (drop legacy r0 versions) (#3007 ) Co-authored-by: Germain <germains@element.io> Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>	2023-08-14 09:25:15 +01:00
Michael Telatynski	55b9116c99	Re-export localStorage-crypto-store (#3660 )	2023-08-11 06:02:52 +00:00
Florian Duros	3a5d66057e	ElementR: Process all verification events, not just requests (#3650 ) * Process all verification event * Add test for `isVerificationEvent` * Review changes * Remove null comparison and add doc to remote echo * review changes	2023-08-09 14:14:58 +00:00
Richard van der Hoff	3f7af189e4	Implement `CryptoApi.checkKeyBackupAndEnable` (#3633 ) * Implement `CryptoApi.checkKeyBackup` * Deprecate `MatrixClient.enableKeyBackup`. * fix integ test * more tests --------- Co-authored-by: valere <valeref@matrix.org>	2023-08-09 09:59:03 +00:00
renovate[bot]	16ddcb0ed0	Lock file maintenance (#3659 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2023-08-08 15:32:57 +00:00
renovate[bot]	9e35b8dd0a	Update all non-major dependencies (#3656 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2023-08-08 15:09:57 +00:00
renovate[bot]	bed787b749	Update tibdex/backport digest to 9565281 (#3658 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2023-08-08 14:14:28 +00:00
renovate[bot]	d260b8be56	Update dependency eslint-config-prettier to v9 (#3657 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2023-08-08 14:10:12 +00:00
renovate[bot]	97991dad02	Update dependency @types/node to v18.17.3 (#3655 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2023-08-08 14:09:52 +00:00
renovate[bot]	b8c19c47ab	Update babel monorepo to v7.22.10 (#3654 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2023-08-08 14:07:45 +00:00