Merge pull request #4789 from matrix-org/dbkr/remove_ssss_secret_cache_option

Remove labs option to cache 'passphrase'

src/CrossSigningManager.js

@@ -20,7 +20,6 @@ import {MatrixClientPeg} from './MatrixClientPeg';
 import { deriveKey } from 'matrix-js-sdk/src/crypto/key_passphrase';
 import { decodeRecoveryKey } from 'matrix-js-sdk/src/crypto/recoverykey';
 import { _t } from './languageHandler';
-import SettingsStore from './settings/SettingsStore';
 import {encodeBase64} from "matrix-js-sdk/src/crypto/olmlib";
 
 // This stores the secret storage private keys in memory for the JS SDK. This is
@@ -34,10 +33,7 @@ let secretStorageBeingAccessed = false;
 let passphraseOnlyOption = null;
 
 function isCachingAllowed() {
-    return (
-        secretStorageBeingAccessed ||
-        SettingsStore.getValue("keepSecretStoragePassphraseForSession")
-    );
+    return secretStorageBeingAccessed;
 }
 
 export class AccessCancelledError extends Error {

src/components/views/settings/tabs/user/LabsUserSettingsTab.js

@@ -66,7 +66,6 @@ export default class LabsUserSettingsTab extends React.Component {
                     <SettingsFlag name={"showHiddenEventsInTimeline"} level={SettingLevel.DEVICE} />
                     <SettingsFlag name={"lowBandwidth"} level={SettingLevel.DEVICE} />
                     <SettingsFlag name={"sendReadReceipts"} level={SettingLevel.ACCOUNT} />
-                    <SettingsFlag name={"keepSecretStoragePassphraseForSession"} level={SettingLevel.DEVICE} />
                 </div>
             </div>
         );

src/i18n/strings/en_EN.json

@@ -480,7 +480,6 @@
     "Send read receipts for messages (requires compatible homeserver to disable)": "Send read receipts for messages (requires compatible homeserver to disable)",
     "Show previews/thumbnails for images": "Show previews/thumbnails for images",
     "Enable message search in encrypted rooms": "Enable message search in encrypted rooms",
-    "Keep recovery passphrase in memory for this session": "Keep recovery passphrase in memory for this session",
     "How fast should messages be downloaded.": "How fast should messages be downloaded.",
     "Manually verify all remote sessions": "Manually verify all remote sessions",
     "IRC display name width": "IRC display name width",

src/settings/Settings.js

@@ -521,11 +521,6 @@ export const SETTINGS = {
         displayName: _td("Enable message search in encrypted rooms"),
         default: true,
     },
-    "keepSecretStoragePassphraseForSession": {
-         supportedLevels: ['device', 'config'],
-         displayName: _td("Keep recovery passphrase in memory for this session"),
-         default: false,
-    },
     "crawlerSleepTime": {
         supportedLevels: LEVELS_DEVICE_ONLY_SETTINGS,
         displayName: _td("How fast should messages be downloaded."),