Merge pull request #959 from vector-im/feature/roomshields_perf

Refactor Room Shield / Profile shield

matrix-sdk-android-rx/src/main/java/im/vector/matrix/rx/LiveDataObservable.kt

@@ -58,7 +58,7 @@ private class LiveDataObservable<T>(
     }
 }
 
-internal fun <T> LiveData<T>.asObservable(): Observable<T> {
+fun <T> LiveData<T>.asObservable(): Observable<T> {
     return LiveDataObservable(this).observeOn(Schedulers.computation())
 }
 

matrix-sdk-android-rx/src/main/java/im/vector/matrix/rx/RxRoom.kt

@@ -16,8 +16,6 @@
 
 package im.vector.matrix.rx
 
-import im.vector.matrix.android.api.crypto.RoomEncryptionTrustLevel
-import im.vector.matrix.android.api.session.Session
 import im.vector.matrix.android.api.session.events.model.Event
 import im.vector.matrix.android.api.session.room.Room
 import im.vector.matrix.android.api.session.room.members.RoomMemberQueryParams
@@ -30,103 +28,22 @@ import im.vector.matrix.android.api.session.room.send.UserDraft
 import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
 import im.vector.matrix.android.api.util.Optional
 import im.vector.matrix.android.api.util.toOptional
-import im.vector.matrix.android.internal.crypto.model.CryptoDeviceInfo
 import io.reactivex.Observable
 import io.reactivex.Single
-import io.reactivex.functions.BiFunction
-import timber.log.Timber
 
-class RxRoom(private val room: Room, private val session: Session) {
+class RxRoom(private val room: Room) {
 
     fun liveRoomSummary(): Observable<Optional<RoomSummary>> {
-        val summaryObservable = room.getRoomSummaryLive()
+        return room.getRoomSummaryLive()
                 .asObservable()
-                .startWithCallable {
+                .startWithCallable { room.roomSummary().toOptional() }
-                    room.roomSummary().toOptional()
-                }
-                .doOnNext { Timber.v("RX: summary emitted for: ${it.getOrNull()?.roomId}") }
-
-        val memberIdsChangeObservable = summaryObservable
-                .map {
-                    it.getOrNull()?.let { roomSummary ->
-                        if (roomSummary.isEncrypted) {
-                            // Return the list of other users
-                            roomSummary.otherMemberIds + listOf(session.myUserId)
-                        } else {
-                            // Return an empty list, the room is not encrypted
-                            emptyList()
-                        }
-                    }.orEmpty()
-                }.distinctUntilChanged()
-                .doOnNext { Timber.v("RX: memberIds emitted. Size: ${it.size}") }
-
-        // Observe the device info of the users in the room
-        val cryptoDeviceInfoObservable = memberIdsChangeObservable
-                .switchMap { membersIds ->
-                    session.getLiveCryptoDeviceInfo(membersIds)
-                            .asObservable()
-                            .map {
-                                // If any key change, emit the userIds list
-                                membersIds
-                            }
-                            .startWith(membersIds)
-                            .doOnNext { Timber.v("RX: CryptoDeviceInfo emitted. Size: ${it.size}") }
-                }
-                .doOnNext { Timber.v("RX: cryptoDeviceInfo emitted 2. Size: ${it.size}") }
-
-        val roomEncryptionTrustLevelObservable = cryptoDeviceInfoObservable
-                .map { userIds ->
-                    if (userIds.isEmpty()) {
-                        Optional<RoomEncryptionTrustLevel>(null)
-                    } else {
-                        session.getCrossSigningService().getTrustLevelForUsers(userIds).toOptional()
-                    }
-                }
-                .doOnNext { Timber.v("RX: roomEncryptionTrustLevel emitted: ${it.getOrNull()?.name}") }
-
-        return Observable
-                .combineLatest<Optional<RoomSummary>, Optional<RoomEncryptionTrustLevel>, Optional<RoomSummary>>(
-                        summaryObservable,
-                        roomEncryptionTrustLevelObservable,
-                        BiFunction { summary, level ->
-                            summary.getOrNull()?.copy(
-                                    roomEncryptionTrustLevel = level.getOrNull()
-                            ).toOptional()
-                        }
-                )
-                .doOnNext { Timber.v("RX: final room summary emitted for ${it.getOrNull()?.roomId}") }
     }
 
     fun liveRoomMembers(queryParams: RoomMemberQueryParams): Observable<List<RoomMemberSummary>> {
-        val roomMembersObservable = room.getRoomMembersLive(queryParams).asObservable()
+        return room.getRoomMembersLive(queryParams).asObservable()
                 .startWithCallable {
                     room.getRoomMembers(queryParams)
                 }
-                .doOnNext { Timber.v("RX: room members emitted. Size: ${it.size}") }
-
-        // TODO Do it only for room members of the room (switchMap)
-        val cryptoDeviceInfoObservable = session.getLiveCryptoDeviceInfo().asObservable()
-                .startWith(emptyList<CryptoDeviceInfo>())
-                .doOnNext { Timber.v("RX: cryptoDeviceInfo emitted. Size: ${it.size}") }
-
-        return Observable
-                .combineLatest<List<RoomMemberSummary>, List<CryptoDeviceInfo>, List<RoomMemberSummary>>(
-                        roomMembersObservable,
-                        cryptoDeviceInfoObservable,
-                        BiFunction { summaries, _ ->
-                            summaries.map {
-                                if (room.isEncrypted()) {
-                                    it.copy(
-                                            // Get the trust level of a virtual room with only this user
-                                            userEncryptionTrustLevel = session.getCrossSigningService().getTrustLevelForUsers(listOf(it.userId))
-                                    )
-                                } else {
-                                    it
-                                }
-                            }
-                        }
-                )
-                .doOnNext { Timber.v("RX: final room members emitted. Size: ${it.size}") }
     }
 
     fun liveAnnotationSummary(eventId: String): Observable<Optional<EventAnnotationsSummary>> {
@@ -180,6 +97,6 @@ class RxRoom(private val room: Room, private val session: Session) {
     }
 }
 
-fun Room.rx(session: Session): RxRoom {
+fun Room.rx(): RxRoom {
-    return RxRoom(this, session)
+    return RxRoom(this)
 }

matrix-sdk-android-rx/src/main/java/im/vector/matrix/rx/RxSession.kt

@@ -33,40 +33,14 @@ import im.vector.matrix.android.api.util.toOptional
 import im.vector.matrix.android.internal.crypto.model.CryptoDeviceInfo
 import io.reactivex.Observable
 import io.reactivex.Single
-import io.reactivex.functions.BiFunction
-import timber.log.Timber
 
 class RxSession(private val session: Session) {
 
     fun liveRoomSummaries(queryParams: RoomSummaryQueryParams): Observable<List<RoomSummary>> {
-        val summariesObservable = session.getRoomSummariesLive(queryParams).asObservable()
+        return session.getRoomSummariesLive(queryParams).asObservable()
                 .startWithCallable {
                     session.getRoomSummaries(queryParams)
                 }
-                .doOnNext { Timber.v("RX: summaries emitted: size: ${it.size}") }
-
-        val cryptoDeviceInfoObservable = session.getLiveCryptoDeviceInfo().asObservable()
-                .startWith(emptyList<CryptoDeviceInfo>())
-                .doOnNext { Timber.v("RX: crypto device info emitted: size: ${it.size}") }
-
-        return Observable
-                .combineLatest<List<RoomSummary>, List<CryptoDeviceInfo>, List<RoomSummary>>(
-                        summariesObservable,
-                        cryptoDeviceInfoObservable,
-                        BiFunction { summaries, _ ->
-                            summaries.map {
-                                if (it.isEncrypted) {
-                                    it.copy(
-                                            roomEncryptionTrustLevel = session.getCrossSigningService()
-                                                    .getTrustLevelForUsers(it.otherMemberIds + session.myUserId)
-                                    )
-                                } else {
-                                    it
-                                }
-                            }
-                        }
-                )
-                .doOnNext { Timber.d("RX: final summaries emitted: size: ${it.size}") }
     }
 
     fun liveGroupSummaries(queryParams: GroupSummaryQueryParams): Observable<List<GroupSummary>> {
@@ -136,12 +110,16 @@ class RxSession(private val session: Session) {
     }
 
     fun liveUserCryptoDevices(userId: String): Observable<List<CryptoDeviceInfo>> {
-        return session.getLiveCryptoDeviceInfo(userId).asObservable()
+        return session.getLiveCryptoDeviceInfo(userId).asObservable().startWithCallable {
+            session.getCryptoDeviceInfo(userId)
+        }
     }
 
     fun liveCrossSigningInfo(userId: String): Observable<Optional<MXCrossSigningInfo>> {
         return session.getCrossSigningService().getLiveCrossSigningKeys(userId).asObservable()
-                .startWith(session.getCrossSigningService().getUserCrossSigningKeys(userId).toOptional())
+                .startWithCallable {
+                    session.getCrossSigningService().getUserCrossSigningKeys(userId).toOptional()
+                }
     }
 }
 

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/crypto/crosssigning/CrossSigningService.kt

@@ -18,7 +18,6 @@ package im.vector.matrix.android.api.session.crypto.crosssigning
 
 import androidx.lifecycle.LiveData
 import im.vector.matrix.android.api.MatrixCallback
-import im.vector.matrix.android.api.crypto.RoomEncryptionTrustLevel
 import im.vector.matrix.android.api.util.Optional
 import im.vector.matrix.android.internal.crypto.crosssigning.DeviceTrustResult
 import im.vector.matrix.android.internal.crypto.crosssigning.UserTrustResult
@@ -63,6 +62,4 @@ interface CrossSigningService {
     fun checkDeviceTrust(otherUserId: String,
                          otherDeviceId: String,
                          locallyTrusted: Boolean?): DeviceTrustResult
-
-    fun getTrustLevelForUsers(userIds: List<String>): RoomEncryptionTrustLevel
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/model/RoomMemberSummary.kt

@@ -16,8 +16,6 @@
 
 package im.vector.matrix.android.api.session.room.model
 
-import im.vector.matrix.android.api.crypto.RoomEncryptionTrustLevel
-
 /**
  * Class representing a simplified version of EventType.STATE_ROOM_MEMBER state event content
  */
@@ -25,7 +23,5 @@ data class RoomMemberSummary constructor(
         val membership: Membership,
         val userId: String,
         val displayName: String? = null,
-        val avatarUrl: String? = null,
+        val avatarUrl: String? = null
-        // TODO Warning: Will not be populated if not using RxRoom
-        val userEncryptionTrustLevel: RoomEncryptionTrustLevel? = null
 )

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/crypto/CryptoModule.kt

@@ -19,10 +19,11 @@ package im.vector.matrix.android.internal.crypto
 import dagger.Binds
 import dagger.Module
 import dagger.Provides
-import im.vector.matrix.android.api.auth.data.Credentials
 import im.vector.matrix.android.api.session.crypto.CryptoService
 import im.vector.matrix.android.api.session.crypto.crosssigning.CrossSigningService
 import im.vector.matrix.android.internal.crypto.api.CryptoApi
+import im.vector.matrix.android.internal.crypto.crosssigning.ComputeTrustTask
+import im.vector.matrix.android.internal.crypto.crosssigning.DefaultComputeTrustTask
 import im.vector.matrix.android.internal.crypto.crosssigning.DefaultCrossSigningService
 import im.vector.matrix.android.internal.crypto.keysbackup.api.RoomKeysApi
 import im.vector.matrix.android.internal.crypto.keysbackup.tasks.CreateKeysBackupVersionTask
@@ -137,15 +138,6 @@ internal abstract class CryptoModule {
             return RealmClearCacheTask(realmConfiguration)
         }
 
-        @JvmStatic
-        @Provides
-        fun providesCryptoStore(@CryptoDatabase
-                                realmConfiguration: RealmConfiguration, credentials: Credentials): IMXCryptoStore {
-            return RealmCryptoStore(
-                    realmConfiguration,
-                    credentials)
-        }
-
         @JvmStatic
         @Provides
         @SessionScope
@@ -249,4 +241,10 @@ internal abstract class CryptoModule {
 
     @Binds
     abstract fun bindCrossSigningService(crossSigningService: DefaultCrossSigningService): CrossSigningService
+
+    @Binds
+    abstract fun bindCryptoStore(realmCryptoStore: RealmCryptoStore): IMXCryptoStore
+
+    @Binds
+    abstract fun bindComputeShieldTrustTask(defaultShieldTrustUpdater: DefaultComputeTrustTask): ComputeTrustTask
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/crypto/DeviceListManager.kt

@@ -27,6 +27,9 @@ import im.vector.matrix.android.internal.crypto.store.IMXCryptoStore
 import im.vector.matrix.android.internal.crypto.tasks.DownloadKeysForUsersTask
 import im.vector.matrix.android.internal.session.SessionScope
 import im.vector.matrix.android.internal.session.sync.SyncTokenStore
+import im.vector.matrix.android.internal.task.TaskExecutor
+import im.vector.matrix.android.internal.util.MatrixCoroutineDispatchers
+import kotlinx.coroutines.launch
 import timber.log.Timber
 import javax.inject.Inject
 
@@ -36,10 +39,12 @@ internal class DeviceListManager @Inject constructor(private val cryptoStore: IM
                                                      private val olmDevice: MXOlmDevice,
                                                      private val syncTokenStore: SyncTokenStore,
                                                      private val credentials: Credentials,
-                                                     private val downloadKeysForUsersTask: DownloadKeysForUsersTask) {
+                                                     private val downloadKeysForUsersTask: DownloadKeysForUsersTask,
+                                                     coroutineDispatchers: MatrixCoroutineDispatchers,
+                                                     taskExecutor: TaskExecutor) {
 
     interface UserDevicesUpdateListener {
-        fun onUsersDeviceUpdate(users: List<String>)
+        fun onUsersDeviceUpdate(userIds: List<String>)
     }
 
     private val deviceChangeListeners = mutableListOf<UserDevicesUpdateListener>()
@@ -72,6 +77,7 @@ internal class DeviceListManager @Inject constructor(private val cryptoStore: IM
     private val notReadyToRetryHS = mutableSetOf<String>()
 
     init {
+        taskExecutor.executorScope.launch(coroutineDispatchers.crypto) {
             var isUpdated = false
             val deviceTrackingStatuses = cryptoStore.getDeviceTrackingStatuses().toMutableMap()
             for ((userId, status) in deviceTrackingStatuses) {
@@ -85,6 +91,7 @@ internal class DeviceListManager @Inject constructor(private val cryptoStore: IM
                 cryptoStore.saveDeviceTrackingStatuses(deviceTrackingStatuses)
             }
         }
+    }
 
     /**
      * Tells if the key downloads should be tried

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/crypto/crosssigning/ComputeTrustTask.kt

@@ -0,0 +1,78 @@
+/*
+ * Copyright 2020 New Vector Ltd
+ *
+ * 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.
+ */
+package im.vector.matrix.android.internal.crypto.crosssigning
+
+import im.vector.matrix.android.api.crypto.RoomEncryptionTrustLevel
+import im.vector.matrix.android.api.extensions.orFalse
+import im.vector.matrix.android.api.session.crypto.crosssigning.MXCrossSigningInfo
+import im.vector.matrix.android.internal.crypto.store.IMXCryptoStore
+import im.vector.matrix.android.internal.task.Task
+import javax.inject.Inject
+
+internal interface ComputeTrustTask : Task<ComputeTrustTask.Params, RoomEncryptionTrustLevel> {
+    data class Params(
+            val userIds: List<String>
+    )
+}
+
+internal class DefaultComputeTrustTask @Inject constructor(
+        val cryptoStore: IMXCryptoStore
+) : ComputeTrustTask {
+
+    override suspend fun execute(params: ComputeTrustTask.Params): RoomEncryptionTrustLevel {
+        val allTrustedUserIds = params.userIds
+                .filter { userId -> getUserCrossSigningKeys(userId)?.isTrusted() == true }
+
+        return if (allTrustedUserIds.isEmpty()) {
+            RoomEncryptionTrustLevel.Default
+        } else {
+            // If one of the verified user as an untrusted device -> warning
+            // If all devices of all verified users are trusted -> green
+            // else -> black
+            allTrustedUserIds
+                    .mapNotNull { cryptoStore.getUserDeviceList(it) }
+                    .flatten()
+                    .let { allDevices ->
+                        if (getMyCrossSigningKeys() != null) {
+                            allDevices.any { !it.trustLevel?.crossSigningVerified.orFalse() }
+                        } else {
+                            // Legacy method
+                            allDevices.any { !it.isVerified }
+                        }
+                    }
+                    .let { hasWarning ->
+                        if (hasWarning) {
+                            RoomEncryptionTrustLevel.Warning
+                        } else {
+                            if (params.userIds.size == allTrustedUserIds.size) {
+                                // all users are trusted and all devices are verified
+                                RoomEncryptionTrustLevel.Trusted
+                            } else {
+                                RoomEncryptionTrustLevel.Default
+                            }
+                        }
+                    }
+        }
+    }
+
+    private fun getUserCrossSigningKeys(otherUserId: String): MXCrossSigningInfo? {
+        return cryptoStore.getCrossSigningInfo(otherUserId)
+    }
+
+    private fun getMyCrossSigningKeys(): MXCrossSigningInfo? {
+        return cryptoStore.getMyCrossSigningInfo()
+    }
+}

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/crypto/crosssigning/DefaultCrossSigningService.kt

@@ -19,8 +19,6 @@ package im.vector.matrix.android.internal.crypto.crosssigning
 import androidx.lifecycle.LiveData
 import dagger.Lazy
 import im.vector.matrix.android.api.MatrixCallback
-import im.vector.matrix.android.api.crypto.RoomEncryptionTrustLevel
-import im.vector.matrix.android.api.extensions.orFalse
 import im.vector.matrix.android.api.session.crypto.crosssigning.CrossSigningService
 import im.vector.matrix.android.api.session.crypto.crosssigning.MXCrossSigningInfo
 import im.vector.matrix.android.api.util.Optional
@@ -37,11 +35,14 @@ import im.vector.matrix.android.internal.crypto.tasks.UploadSigningKeysTask
 import im.vector.matrix.android.internal.di.UserId
 import im.vector.matrix.android.internal.session.SessionScope
 import im.vector.matrix.android.internal.task.TaskExecutor
+import im.vector.matrix.android.internal.task.TaskThread
 import im.vector.matrix.android.internal.task.configureWith
 import im.vector.matrix.android.internal.util.JsonCanonicalizer
 import im.vector.matrix.android.internal.util.MatrixCoroutineDispatchers
 import im.vector.matrix.android.internal.util.withoutPrefix
 import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.launch
+import org.greenrobot.eventbus.EventBus
 import org.matrix.olm.OlmPkSigning
 import org.matrix.olm.OlmUtility
 import timber.log.Timber
@@ -56,9 +57,11 @@ internal class DefaultCrossSigningService @Inject constructor(
         private val deviceListManager: DeviceListManager,
         private val uploadSigningKeysTask: UploadSigningKeysTask,
         private val uploadSignaturesTask: UploadSignaturesTask,
-        private val cryptoCoroutineScope: CoroutineScope,
+        private val computeTrustTask: ComputeTrustTask,
+        private val taskExecutor: TaskExecutor,
         private val coroutineDispatchers: MatrixCoroutineDispatchers,
-        private val taskExecutor: TaskExecutor) : CrossSigningService, DeviceListManager.UserDevicesUpdateListener {
+        private val cryptoCoroutineScope: CoroutineScope,
+        private val eventBus: EventBus) : CrossSigningService, DeviceListManager.UserDevicesUpdateListener {
 
     private var olmUtility: OlmUtility? = null
 
@@ -210,6 +213,7 @@ internal class DefaultCrossSigningService @Inject constructor(
         cryptoStore.storePrivateKeysInfo(masterKeyPrivateKey?.toBase64NoPadding(), uskPrivateKey?.toBase64NoPadding(), sskPrivateKey?.toBase64NoPadding())
 
         uploadSigningKeysTask.configureWith(params) {
+            this.executionThread = TaskThread.CRYPTO
             this.callback = object : MatrixCallback<Unit> {
                 override fun onSuccess(data: Unit) {
                     Timber.i("## CrossSigning - Keys successfully uploaded")
@@ -245,6 +249,7 @@ internal class DefaultCrossSigningService @Inject constructor(
                     resetTrustOnKeyChange()
                     uploadSignaturesTask.configureWith(UploadSignaturesTask.Params(uploadSignatureQueryBuilder.build())) {
                         // this.retryCount = 3
+                        this.executionThread = TaskThread.CRYPTO
                         this.callback = object : MatrixCallback<Unit> {
                             override fun onSuccess(data: Unit) {
                                 Timber.i("## CrossSigning - signatures successfully uploaded")
@@ -497,6 +502,7 @@ internal class DefaultCrossSigningService @Inject constructor(
                 .withSigningKeyInfo(otherMasterKeys.copyForSignature(userId, userPubKey, newSignature))
                 .build()
         uploadSignaturesTask.configureWith(UploadSignaturesTask.Params(uploadQuery)) {
+            this.executionThread = TaskThread.CRYPTO
             this.callback = callback
         }.executeBy(taskExecutor)
     }
@@ -543,6 +549,7 @@ internal class DefaultCrossSigningService @Inject constructor(
                 .withDeviceInfo(toUpload)
                 .build()
         uploadSignaturesTask.configureWith(UploadSignaturesTask.Params(uploadQuery)) {
+            this.executionThread = TaskThread.CRYPTO
             this.callback = callback
         }.executeBy(taskExecutor)
     }
@@ -608,10 +615,10 @@ internal class DefaultCrossSigningService @Inject constructor(
         }
     }
 
-    override fun onUsersDeviceUpdate(users: List<String>) {
+    override fun onUsersDeviceUpdate(userIds: List<String>) {
-        Timber.d("## CrossSigning - onUsersDeviceUpdate for ${users.size} users")
+        cryptoCoroutineScope.launch(coroutineDispatchers.crypto) {
-        users.forEach { otherUserId ->
+            Timber.d("## CrossSigning - onUsersDeviceUpdate for ${userIds.size} users")
-
+            userIds.forEach { otherUserId ->
                 checkUserTrust(otherUserId).let {
                     Timber.d("## CrossSigning - update trust for $otherUserId , verified=${it.isVerified()}")
                     setUserKeysAsTrusted(otherUserId, it.isVerified())
@@ -630,13 +637,16 @@ internal class DefaultCrossSigningService @Inject constructor(
                     // In this case it will change my MSK trust, and should then re-trigger a check of all other user trust
                     setUserKeysAsTrusted(otherUserId, checkSelfTrust().isVerified())
                 }
+
+                eventBus.post(CryptoToSessionUserTrustChange(userIds))
+            }
         }
     }
 
     private fun setUserKeysAsTrusted(otherUserId: String, trusted: Boolean) {
+        cryptoCoroutineScope.launch(coroutineDispatchers.crypto) {
             val currentTrust = cryptoStore.getCrossSigningInfo(otherUserId)?.isTrusted()
             cryptoStore.setUserKeysAsTrusted(otherUserId, trusted)
-
             // If it's me, recheck trust of all users and devices?
             val users = ArrayList<String>()
             if (otherUserId == userId && currentTrust != trusted) {
@@ -654,37 +664,5 @@ internal class DefaultCrossSigningService @Inject constructor(
                 }
             }
         }
-
-    override fun getTrustLevelForUsers(userIds: List<String>): RoomEncryptionTrustLevel {
-        val allTrusted = userIds
-                .filter { getUserCrossSigningKeys(it)?.isTrusted() == true }
-
-        val allUsersAreVerified = userIds.size == allTrusted.size
-
-        return if (allTrusted.isEmpty()) {
-            RoomEncryptionTrustLevel.Default
-        } else {
-            // If one of the verified user as an untrusted device -> warning
-            // Green if all devices of all verified users are trusted -> green
-            // else black
-            val allDevices = allTrusted.mapNotNull {
-                cryptoStore.getUserDeviceList(it)
-            }.flatten()
-            if (getMyCrossSigningKeys() != null) {
-                val hasWarning = allDevices.any { !it.trustLevel?.crossSigningVerified.orFalse() }
-                if (hasWarning) {
-                    RoomEncryptionTrustLevel.Warning
-                } else {
-                    if (allUsersAreVerified) RoomEncryptionTrustLevel.Trusted else RoomEncryptionTrustLevel.Default
-                }
-            } else {
-                val hasWarningLegacy = allDevices.any { !it.isVerified }
-                if (hasWarningLegacy) {
-                    RoomEncryptionTrustLevel.Warning
-                } else {
-                    if (allUsersAreVerified) RoomEncryptionTrustLevel.Trusted else RoomEncryptionTrustLevel.Default
-                }
-            }
-        }
     }
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/crypto/crosssigning/SessionToCryptoRoomMembersUpdate.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * 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.
+ */
+package im.vector.matrix.android.internal.crypto.crosssigning
+
+data class SessionToCryptoRoomMembersUpdate(
+        val roomId: String,
+        val userIds: List<String>
+)
+
+data class CryptoToSessionUserTrustChange(
+        val userIds: List<String>
+)

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/crypto/crosssigning/ShieldTrustUpdater.kt

@@ -0,0 +1,132 @@
+/*
+ * Copyright 2020 New Vector Ltd
+ *
+ * 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.
+ */
+package im.vector.matrix.android.internal.crypto.crosssigning
+
+import im.vector.matrix.android.internal.database.model.RoomMemberSummaryEntity
+import im.vector.matrix.android.internal.database.model.RoomMemberSummaryEntityFields
+import im.vector.matrix.android.internal.database.query.where
+import im.vector.matrix.android.internal.di.CryptoDatabase
+import im.vector.matrix.android.internal.di.SessionDatabase
+import im.vector.matrix.android.internal.session.room.RoomSummaryUpdater
+import im.vector.matrix.android.internal.task.TaskExecutor
+import im.vector.matrix.android.internal.util.createBackgroundHandler
+import io.realm.Realm
+import io.realm.RealmConfiguration
+import kotlinx.coroutines.launch
+import org.greenrobot.eventbus.EventBus
+import org.greenrobot.eventbus.Subscribe
+import java.util.concurrent.atomic.AtomicReference
+import javax.inject.Inject
+
+internal class ShieldTrustUpdater @Inject constructor(
+        private val eventBus: EventBus,
+        private val computeTrustTask: ComputeTrustTask,
+        private val taskExecutor: TaskExecutor,
+        @CryptoDatabase private val cryptoRealmConfiguration: RealmConfiguration,
+        @SessionDatabase private val sessionRealmConfiguration: RealmConfiguration,
+        private val roomSummaryUpdater: RoomSummaryUpdater
+) {
+
+    companion object {
+        private val BACKGROUND_HANDLER = createBackgroundHandler("SHIELD_CRYPTO_DB_THREAD")
+    }
+
+    private val backgroundCryptoRealm = AtomicReference<Realm>()
+    private val backgroundSessionRealm = AtomicReference<Realm>()
+
+//    private var cryptoDevicesResult: RealmResults<DeviceInfoEntity>? = null
+
+//    private val cryptoDeviceChangeListener = object : OrderedRealmCollectionChangeListener<RealmResults<DeviceInfoEntity>> {
+//        override fun onChange(t: RealmResults<DeviceInfoEntity>, changeSet: OrderedCollectionChangeSet) {
+//            val grouped = t.groupBy { it.userId }
+//            onCryptoDevicesChange(grouped.keys.mapNotNull { it })
+//        }
+//    }
+
+    fun start() {
+        eventBus.register(this)
+        BACKGROUND_HANDLER.post {
+            val cryptoRealm = Realm.getInstance(cryptoRealmConfiguration)
+            backgroundCryptoRealm.set(cryptoRealm)
+//            cryptoDevicesResult = cryptoRealm.where<DeviceInfoEntity>().findAll()
+//            cryptoDevicesResult?.addChangeListener(cryptoDeviceChangeListener)
+
+            backgroundSessionRealm.set(Realm.getInstance(sessionRealmConfiguration))
+        }
+    }
+
+    fun stop() {
+        eventBus.unregister(this)
+        BACKGROUND_HANDLER.post {
+            //            cryptoDevicesResult?.removeAllChangeListeners()
+            backgroundCryptoRealm.getAndSet(null).also {
+                it?.close()
+            }
+            backgroundSessionRealm.getAndSet(null).also {
+                it?.close()
+            }
+        }
+    }
+
+    @Subscribe
+    fun onRoomMemberChange(update: SessionToCryptoRoomMembersUpdate) {
+        taskExecutor.executorScope.launch {
+            val updatedTrust = computeTrustTask.execute(ComputeTrustTask.Params(update.userIds))
+            // We need to send that back to session base
+
+            BACKGROUND_HANDLER.post {
+                backgroundSessionRealm.get().executeTransaction { realm ->
+                    roomSummaryUpdater.updateShieldTrust(realm, update.roomId, updatedTrust)
+                }
+            }
+        }
+    }
+
+    @Subscribe
+    fun onTrustUpdate(update: CryptoToSessionUserTrustChange) {
+        onCryptoDevicesChange(update.userIds)
+    }
+
+    private fun onCryptoDevicesChange(users: List<String>) {
+        BACKGROUND_HANDLER.post {
+            val impactedRoomsId = backgroundSessionRealm.get().where(RoomMemberSummaryEntity::class.java)
+                    .`in`(RoomMemberSummaryEntityFields.USER_ID, users.toTypedArray())
+                    .findAll()
+                    .map { it.roomId }
+                    .distinct()
+
+            val map = HashMap<String, List<String>>()
+            impactedRoomsId.forEach { roomId ->
+                RoomMemberSummaryEntity.where(backgroundSessionRealm.get(), roomId).findAll()?.let { results ->
+                    map[roomId] = results.map { it.userId }
+                }
+            }
+
+            map.forEach { entry ->
+                val roomId = entry.key
+                val userList = entry.value
+                taskExecutor.executorScope.launch {
+                    val updatedTrust = computeTrustTask.execute(ComputeTrustTask.Params(userList))
+                    BACKGROUND_HANDLER.post {
+                        backgroundSessionRealm.get().executeTransaction { realm ->
+                            roomSummaryUpdater.updateShieldTrust(realm, roomId, updatedTrust)
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/crypto/store/db/RealmCryptoStore.kt

@@ -61,6 +61,7 @@ import im.vector.matrix.android.internal.crypto.store.db.query.delete
 import im.vector.matrix.android.internal.crypto.store.db.query.get
 import im.vector.matrix.android.internal.crypto.store.db.query.getById
 import im.vector.matrix.android.internal.crypto.store.db.query.getOrCreate
+import im.vector.matrix.android.internal.di.CryptoDatabase
 import im.vector.matrix.android.internal.session.SessionScope
 import io.realm.Realm
 import io.realm.RealmConfiguration
@@ -70,10 +71,12 @@ import io.realm.kotlin.where
 import org.matrix.olm.OlmAccount
 import org.matrix.olm.OlmException
 import timber.log.Timber
+import javax.inject.Inject
 import kotlin.collections.set
 
 @SessionScope
-internal class RealmCryptoStore(private val realmConfiguration: RealmConfiguration,
+internal class RealmCryptoStore @Inject constructor(
+        @CryptoDatabase private val realmConfiguration: RealmConfiguration,
         private val credentials: Credentials) : IMXCryptoStore {
 
     /* ==========================================================================================
@@ -403,14 +406,14 @@ internal class RealmCryptoStore(private val realmConfiguration: RealmConfigurati
                 { realm: Realm ->
                     realm
                             .where<UserEntity>()
-                            .`in`(UserEntityFields.USER_ID, userIds.toTypedArray())
+                            .`in`(UserEntityFields.USER_ID, userIds.distinct().toTypedArray())
                 },
                 { entity ->
                     entity.devices.map { CryptoMapper.mapToModel(it) }
                 }
         )
         return Transformations.map(liveData) {
-            it.firstOrNull() ?: emptyList()
+            it.flatten()
         }
     }
 

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/mapper/RoomMemberSummaryMapper.kt

@@ -26,8 +26,7 @@ internal object RoomMemberSummaryMapper {
                 userId = roomMemberSummaryEntity.userId,
                 avatarUrl = roomMemberSummaryEntity.avatarUrl,
                 displayName = roomMemberSummaryEntity.displayName,
-                membership = roomMemberSummaryEntity.membership,
+                membership = roomMemberSummaryEntity.membership
-                userEncryptionTrustLevel = null
         )
     }
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/mapper/RoomSummaryMapper.kt

@@ -17,11 +17,11 @@
 package im.vector.matrix.android.internal.database.mapper
 
 import im.vector.matrix.android.api.session.crypto.CryptoService
-import im.vector.matrix.android.api.session.crypto.MXCryptoError
 import im.vector.matrix.android.api.session.room.model.RoomSummary
 import im.vector.matrix.android.api.session.room.model.tag.RoomTag
 import im.vector.matrix.android.internal.crypto.algorithms.olm.OlmDecryptionResult
 import im.vector.matrix.android.internal.database.model.RoomSummaryEntity
+import timber.log.Timber
 import java.util.UUID
 import javax.inject.Inject
 
@@ -49,7 +49,8 @@ internal class RoomSummaryMapper @Inject constructor(
                         keysClaimed = result.claimedEd25519Key?.let { mapOf("ed25519" to it) },
                         forwardingCurve25519KeyChain = result.forwardingCurve25519KeyChain
                 )
-            } catch (e: MXCryptoError) {
+            } catch (e: Throwable) {
+                Timber.d(e)
             }
         }
 
@@ -75,7 +76,8 @@ internal class RoomSummaryMapper @Inject constructor(
                 aliases = roomSummaryEntity.aliases.toList(),
                 isEncrypted = roomSummaryEntity.isEncrypted,
                 typingRoomMemberIds = roomSummaryEntity.typingUserIds.toList(),
-                breadcrumbsIndex = roomSummaryEntity.breadcrumbsIndex
+                breadcrumbsIndex = roomSummaryEntity.breadcrumbsIndex,
+                roomEncryptionTrustLevel = roomSummaryEntity.roomEncryptionTrustLevel
         )
     }
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/model/RoomSummaryEntity.kt

@@ -16,6 +16,7 @@
 
 package im.vector.matrix.android.internal.database.model
 
+import im.vector.matrix.android.api.crypto.RoomEncryptionTrustLevel
 import im.vector.matrix.android.api.session.room.model.Membership
 import im.vector.matrix.android.api.session.room.model.RoomSummary
 import im.vector.matrix.android.api.session.room.model.VersioningState
@@ -47,7 +48,8 @@ internal open class RoomSummaryEntity(
         // this is required for querying
         var flatAliases: String = "",
         var isEncrypted: Boolean = false,
-        var typingUserIds: RealmList<String> = RealmList()
+        var typingUserIds: RealmList<String> = RealmList(),
+        var roomEncryptionTrustLevelStr: String? = null
 ) : RealmObject() {
 
     private var membershipStr: String = Membership.NONE.name
@@ -68,5 +70,19 @@ internal open class RoomSummaryEntity(
             versioningStateStr = value.name
         }
 
+    var roomEncryptionTrustLevel: RoomEncryptionTrustLevel?
+        get() {
+            return roomEncryptionTrustLevelStr?.let {
+                try {
+                    RoomEncryptionTrustLevel.valueOf(it)
+                } catch (failure: Throwable) {
+                    null
+                }
+            }
+        }
+        set(value) {
+            roomEncryptionTrustLevelStr = value?.name
+        }
+
     companion object
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/DefaultSession.kt

@@ -43,6 +43,7 @@ import im.vector.matrix.android.api.session.sync.SyncState
 import im.vector.matrix.android.api.session.user.UserService
 import im.vector.matrix.android.internal.auth.SessionParamsStore
 import im.vector.matrix.android.internal.crypto.DefaultCryptoService
+import im.vector.matrix.android.internal.crypto.crosssigning.ShieldTrustUpdater
 import im.vector.matrix.android.internal.database.LiveEntityObserver
 import im.vector.matrix.android.internal.di.SessionId
 import im.vector.matrix.android.internal.di.WorkManagerProvider
@@ -89,7 +90,8 @@ internal class DefaultSession @Inject constructor(
         private val sessionParamsStore: SessionParamsStore,
         private val contentUploadProgressTracker: ContentUploadStateTracker,
         private val initialSyncProgressService: Lazy<InitialSyncProgressService>,
-        private val homeServerCapabilitiesService: Lazy<HomeServerCapabilitiesService>)
+        private val homeServerCapabilitiesService: Lazy<HomeServerCapabilitiesService>,
+        private val shieldTrustUpdater: ShieldTrustUpdater)
     : Session,
         RoomService by roomService.get(),
         RoomDirectoryService by roomDirectoryService.get(),
@@ -119,6 +121,7 @@ internal class DefaultSession @Inject constructor(
         isOpen = true
         liveEntityObservers.forEach { it.start() }
         eventBus.register(this)
+        shieldTrustUpdater.start()
     }
 
     override fun requireBackgroundSync() {
@@ -160,6 +163,7 @@ internal class DefaultSession @Inject constructor(
         isOpen = false
         eventBus.unregister(this)
         syncTaskSequencer.close()
+        shieldTrustUpdater.stop()
     }
 
     override fun getSyncStateLive(): LiveData<SyncState> {

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/RoomSummaryUpdater.kt

@@ -17,6 +17,7 @@
 package im.vector.matrix.android.internal.session.room
 
 import com.zhuinden.monarchy.Monarchy
+import im.vector.matrix.android.api.crypto.RoomEncryptionTrustLevel
 import im.vector.matrix.android.api.session.events.model.EventType
 import im.vector.matrix.android.api.session.events.model.toModel
 import im.vector.matrix.android.api.session.room.model.Membership
@@ -24,6 +25,7 @@ import im.vector.matrix.android.api.session.room.model.RoomAliasesContent
 import im.vector.matrix.android.api.session.room.model.RoomCanonicalAliasContent
 import im.vector.matrix.android.api.session.room.model.RoomTopicContent
 import im.vector.matrix.android.internal.crypto.MXCRYPTO_ALGORITHM_MEGOLM
+import im.vector.matrix.android.internal.crypto.crosssigning.SessionToCryptoRoomMembersUpdate
 import im.vector.matrix.android.internal.database.mapper.ContentMapper
 import im.vector.matrix.android.internal.database.model.CurrentStateEventEntity
 import im.vector.matrix.android.internal.database.model.EventEntity
@@ -43,12 +45,14 @@ import im.vector.matrix.android.internal.session.sync.RoomSyncHandler
 import im.vector.matrix.android.internal.session.sync.model.RoomSyncSummary
 import im.vector.matrix.android.internal.session.sync.model.RoomSyncUnreadNotifications
 import io.realm.Realm
+import org.greenrobot.eventbus.EventBus
 import javax.inject.Inject
 
 internal class RoomSummaryUpdater @Inject constructor(
         @UserId private val userId: String,
         private val roomDisplayNameResolver: RoomDisplayNameResolver,
         private val roomAvatarResolver: RoomAvatarResolver,
+        private val eventBus: EventBus,
         private val monarchy: Monarchy) {
 
     companion object {
@@ -139,6 +143,18 @@ internal class RoomSummaryUpdater @Inject constructor(
 
             roomSummaryEntity.otherMemberIds.clear()
             roomSummaryEntity.otherMemberIds.addAll(otherRoomMembers)
+            if (roomSummaryEntity.isEncrypted) {
+                eventBus.post(SessionToCryptoRoomMembersUpdate(roomId, roomSummaryEntity.otherMemberIds.toList() + userId))
+            }
+        }
+    }
+
+    fun updateShieldTrust(realm: Realm,
+                          roomId: String,
+                          trust: RoomEncryptionTrustLevel?) {
+        val roomSummaryEntity = RoomSummaryEntity.getOrCreate(realm, roomId)
+        if (roomSummaryEntity.isEncrypted) {
+            roomSummaryEntity.roomEncryptionTrustLevel = trust
         }
     }
 }

vector/src/main/java/im/vector/riotx/core/epoxy/profiles/ProfileActionItem.kt

@@ -38,12 +38,19 @@ abstract class ProfileActionItem : VectorEpoxyModel<ProfileActionItem.Holder>()
     lateinit var title: String
     @EpoxyAttribute
     var subtitle: String? = null
+
     @EpoxyAttribute
     var iconRes: Int = 0
 
+    @EpoxyAttribute
+    var tintIcon: Boolean = true
+
     @EpoxyAttribute
     var editableRes: Int = R.drawable.ic_arrow_right
 
+    @EpoxyAttribute
+    var accessoryRes: Int = 0
+
     @EpoxyAttribute
     var editable: Boolean = true
 
@@ -70,12 +77,23 @@ abstract class ProfileActionItem : VectorEpoxyModel<ProfileActionItem.Holder>()
         holder.subtitle.setTextOrHide(subtitle)
         if (iconRes != 0) {
             holder.icon.setImageResource(iconRes)
+            if (tintIcon) {
                 ImageViewCompat.setImageTintList(holder.icon, ColorStateList.valueOf(tintColor))
+            } else {
+                ImageViewCompat.setImageTintList(holder.icon, null)
+            }
             holder.icon.isVisible = true
         } else {
             holder.icon.isVisible = false
         }
 
+        if (accessoryRes != 0) {
+            holder.secondaryAccessory.setImageResource(accessoryRes)
+            holder.secondaryAccessory.isVisible = true
+        } else {
+            holder.secondaryAccessory.isVisible = false
+        }
+
         if (editableRes != 0) {
             val tintColorSecondary = if (destructive) {
                 tintColor
@@ -95,5 +113,6 @@ abstract class ProfileActionItem : VectorEpoxyModel<ProfileActionItem.Holder>()
         val title by bind<TextView>(R.id.actionTitle)
         val subtitle by bind<TextView>(R.id.actionSubtitle)
         val editable by bind<ImageView>(R.id.actionEditable)
+        val secondaryAccessory by bind<ImageView>(R.id.actionSecondaryAccessory)
     }
 }

vector/src/main/java/im/vector/riotx/core/epoxy/profiles/ProfileItemExtensions.kt

@@ -36,19 +36,23 @@ fun EpoxyController.buildProfileAction(
         subtitle: String? = null,
         editable: Boolean = true,
         @DrawableRes icon: Int = 0,
+        tintIcon: Boolean = true,
         @DrawableRes editableRes: Int? = null,
         destructive: Boolean = false,
         divider: Boolean = true,
-        action: ClickListener? = null
+        action: ClickListener? = null,
+        @DrawableRes accessory: Int = 0
 ) {
     profileActionItem {
         iconRes(icon)
+        tintIcon(tintIcon)
         id("action_$id")
         subtitle(subtitle)
         editable(editable)
         editableRes?.let { editableRes(editableRes) }
         destructive(destructive)
         title(title)
+        accessoryRes(accessory)
         listener { _ ->
             action?.invoke()
         }

vector/src/main/java/im/vector/riotx/core/rx/RxConfig.kt

@@ -31,7 +31,8 @@ class RxConfig @Inject constructor(
     fun setupRxPlugin() {
         RxJavaPlugins.setErrorHandler { throwable ->
             Timber.e(throwable, "RxError")
-
+            // is InterruptedException -> fine, some blocking code was interrupted by a dispose call
+            if (throwable !is InterruptedException) {
                 // Avoid crash in production, except if user wants it
                 if (vectorPreferences.failFast()) {
                     throw throwable
@@ -39,3 +40,4 @@ class RxConfig @Inject constructor(
             }
         }
     }
+}

vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailViewModel.kt

@@ -159,7 +159,7 @@ class RoomDetailViewModel @AssistedInject constructor(@Assisted initialState: Ro
         observeMyRoomMember()
         room.getRoomSummaryLive()
         room.markAsRead(ReadService.MarkAsReadParams.READ_RECEIPT, NoOpMatrixCallback())
-        room.rx(session).loadRoomMembersIfNeeded().subscribeLogError().disposeOnClear()
+        room.rx().loadRoomMembersIfNeeded().subscribeLogError().disposeOnClear()
         // Inform the SDK that the room is displayed
         session.onRoomDisplayed(initialState.roomId)
     }
@@ -168,7 +168,7 @@ class RoomDetailViewModel @AssistedInject constructor(@Assisted initialState: Ro
         val queryParams = roomMemberQueryParams {
             this.userId = QueryStringValue.Equals(session.myUserId, QueryStringValue.Case.SENSITIVE)
         }
-        room.rx(session)
+        room.rx()
                 .liveRoomMembers(queryParams)
                 .map {
                     it.firstOrNull().toOptional()
@@ -255,7 +255,7 @@ class RoomDetailViewModel @AssistedInject constructor(@Assisted initialState: Ro
     }
 
     private fun observeDrafts() {
-        room.rx(session).liveDrafts()
+        room.rx().liveDrafts()
                 .subscribe {
                     Timber.d("Draft update --> SetState")
                     setState {
@@ -896,7 +896,7 @@ class RoomDetailViewModel @AssistedInject constructor(@Assisted initialState: Ro
     }
 
     private fun observeRoomSummary() {
-        room.rx(session).liveRoomSummary()
+        room.rx().liveRoomSummary()
                 .unwrap()
                 .execute { async ->
                     val typingRoomMembers =
@@ -914,7 +914,7 @@ class RoomDetailViewModel @AssistedInject constructor(@Assisted initialState: Ro
         Observable
                 .combineLatest<List<TimelineEvent>, RoomSummary, UnreadState>(
                         timelineEvents.observeOn(Schedulers.computation()),
-                        room.rx(session).liveRoomSummary().unwrap(),
+                        room.rx().liveRoomSummary().unwrap(),
                         BiFunction { timelineEvents, roomSummary ->
                             computeUnreadState(timelineEvents, roomSummary)
                         }

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/action/MessageActionsViewModel.kt

@@ -134,7 +134,7 @@ class MessageActionsViewModel @AssistedInject constructor(@Assisted
 
     private fun observeEvent() {
         if (room == null) return
-        room.rx(session)
+        room.rx()
                 .liveTimelineEvent(eventId)
                 .unwrap()
                 .execute {
@@ -144,7 +144,7 @@ class MessageActionsViewModel @AssistedInject constructor(@Assisted
 
     private fun observeReactions() {
         if (room == null) return
-        room.rx(session)
+        room.rx()
                 .liveAnnotationSummary(eventId)
                 .map { annotations ->
                     EmojiDataSource.quickEmojis.map { emoji ->

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/reactions/ViewReactionsViewModel.kt

@@ -86,7 +86,7 @@ class ViewReactionsViewModel @AssistedInject constructor(@Assisted
     }
 
     private fun observeEventAnnotationSummaries() {
-        RxRoom(room, session)
+        RxRoom(room)
                 .liveAnnotationSummary(eventId)
                 .unwrap()
                 .flatMapSingle { summaries ->

vector/src/main/java/im/vector/riotx/features/home/room/list/actions/RoomListQuickActionsViewModel.kt

@@ -54,7 +54,7 @@ class RoomListQuickActionsViewModel @AssistedInject constructor(@Assisted initia
 
     private fun observeNotificationState() {
         room
-                .rx(session)
+                .rx()
                 .liveNotificationState()
                 .execute {
                     copy(roomNotificationState = it)
@@ -63,7 +63,7 @@ class RoomListQuickActionsViewModel @AssistedInject constructor(@Assisted initia
 
     private fun observeRoomSummary() {
         room
-                .rx(session)
+                .rx()
                 .liveRoomSummary()
                 .unwrap()
                 .execute {

vector/src/main/java/im/vector/riotx/features/roommemberprofile/RoomMemberProfileController.kt

@@ -97,6 +97,7 @@ class RoomMemberProfileController @Inject constructor(
                             dividerColor = dividerColor,
                             editable = true,
                             icon = icon,
+                            tintIcon = false,
                             divider = false,
                             action = { callback?.onShowDeviceList() }
                     )

vector/src/main/java/im/vector/riotx/features/roommemberprofile/RoomMemberProfileViewModel.kt

@@ -170,7 +170,7 @@ class RoomMemberProfileViewModel @AssistedInject constructor(@Assisted private v
         val queryParams = roomMemberQueryParams {
             this.userId = QueryStringValue.Equals(initialState.userId, QueryStringValue.Case.SENSITIVE)
         }
-        room.rx(session).liveRoomMembers(queryParams)
+        room.rx().liveRoomMembers(queryParams)
                 .map { it.firstOrNull()?.toMatrixItem().toOptional() }
                 .unwrap()
                 .execute {
@@ -193,8 +193,8 @@ class RoomMemberProfileViewModel @AssistedInject constructor(@Assisted private v
     }
 
     private fun observeRoomSummaryAndPowerLevels(room: Room) {
-        val roomSummaryLive = room.rx(session).liveRoomSummary().unwrap()
+        val roomSummaryLive = room.rx().liveRoomSummary().unwrap()
-        val powerLevelsContentLive = room.rx(session).liveStateEvent(EventType.STATE_ROOM_POWER_LEVELS, "")
+        val powerLevelsContentLive = room.rx().liveStateEvent(EventType.STATE_ROOM_POWER_LEVELS, "")
                 .mapOptional { it.content.toModel<PowerLevelsContent>() }
                 .unwrap()
 

vector/src/main/java/im/vector/riotx/features/roomprofile/RoomProfileController.kt

@@ -18,6 +18,7 @@
 package im.vector.riotx.features.roomprofile
 
 import com.airbnb.epoxy.TypedEpoxyController
+import im.vector.matrix.android.api.crypto.RoomEncryptionTrustLevel
 import im.vector.riotx.R
 import im.vector.riotx.core.epoxy.profiles.buildProfileAction
 import im.vector.riotx.core.epoxy.profiles.buildProfileSection
@@ -79,11 +80,13 @@ class RoomProfileController @Inject constructor(
                 action = { callback?.onNotificationsClicked() }
         )
         val numberOfMembers = roomSummary.joinedMembersCount ?: 0
+        val hasWarning = roomSummary.isEncrypted && roomSummary.roomEncryptionTrustLevel == RoomEncryptionTrustLevel.Warning
         buildProfileAction(
                 id = "member_list",
                 title = stringProvider.getQuantityString(R.plurals.room_profile_section_more_member_list, numberOfMembers, numberOfMembers),
                 dividerColor = dividerColor,
                 icon = R.drawable.ic_room_profile_member_list,
+                accessory = R.drawable.ic_shield_warning.takeIf { hasWarning } ?: 0,
                 action = { callback?.onMemberListClicked() }
         )
         buildProfileAction(

vector/src/main/java/im/vector/riotx/features/roomprofile/RoomProfileViewModel.kt

@@ -56,7 +56,7 @@ class RoomProfileViewModel @AssistedInject constructor(@Assisted initialState: R
     }
 
     private fun observeRoomSummary() {
-        room.rx(session).liveRoomSummary()
+        room.rx().liveRoomSummary()
                 .unwrap()
                 .execute {
                     copy(roomSummary = it)

vector/src/main/java/im/vector/riotx/features/roomprofile/members/RoomMemberListController.kt

@@ -62,7 +62,7 @@ class RoomMemberListController @Inject constructor(
                             id(roomMember.userId)
                             matrixItem(roomMember.toMatrixItem())
                             avatarRenderer(avatarRenderer)
-                            userEncryptionTrustLevel(roomMember.userEncryptionTrustLevel)
+                            userEncryptionTrustLevel(data.trustLevelMap.invoke()?.get(roomMember.userId))
                             clickListener { _ ->
                                 callback?.onRoomMemberClicked(roomMember)
                             }

vector/src/main/java/im/vector/riotx/features/roomprofile/members/RoomMemberListViewModel.kt

@@ -21,6 +21,8 @@ import com.airbnb.mvrx.MvRxViewModelFactory
 import com.airbnb.mvrx.ViewModelContext
 import com.squareup.inject.assisted.Assisted
 import com.squareup.inject.assisted.AssistedInject
+import im.vector.matrix.android.api.crypto.RoomEncryptionTrustLevel
+import im.vector.matrix.android.api.extensions.orFalse
 import im.vector.matrix.android.api.query.QueryStringValue
 import im.vector.matrix.android.api.session.Session
 import im.vector.matrix.android.api.session.events.model.EventType
@@ -31,13 +33,16 @@ import im.vector.matrix.android.api.session.room.model.PowerLevelsContent
 import im.vector.matrix.android.api.session.room.model.RoomMemberSummary
 import im.vector.matrix.android.api.session.room.powerlevels.PowerLevelsConstants
 import im.vector.matrix.android.api.session.room.powerlevels.PowerLevelsHelper
+import im.vector.matrix.rx.asObservable
 import im.vector.matrix.rx.mapOptional
 import im.vector.matrix.rx.rx
 import im.vector.matrix.rx.unwrap
 import im.vector.riotx.core.platform.EmptyViewEvents
 import im.vector.riotx.core.platform.VectorViewModel
 import io.reactivex.Observable
+import io.reactivex.android.schedulers.AndroidSchedulers
 import io.reactivex.functions.BiFunction
+import timber.log.Timber
 
 class RoomMemberListViewModel @AssistedInject constructor(@Assisted initialState: RoomMemberListViewState,
                                                           private val roomMemberSummaryComparator: RoomMemberSummaryComparator,
@@ -70,10 +75,11 @@ class RoomMemberListViewModel @AssistedInject constructor(@Assisted initialState
             displayName = QueryStringValue.IsNotEmpty
             memberships = Membership.activeMemberships()
         }
+
         Observable
                 .combineLatest<List<RoomMemberSummary>, PowerLevelsContent, RoomMemberSummaries>(
-                        room.rx(session).liveRoomMembers(roomMemberQueryParams),
+                        room.rx().liveRoomMembers(roomMemberQueryParams),
-                        room.rx(session)
+                        room.rx()
                                 .liveStateEvent(EventType.STATE_ROOM_POWER_LEVELS, "")
                                 .mapOptional { it.content.toModel<PowerLevelsContent>() }
                                 .unwrap(),
@@ -84,10 +90,36 @@ class RoomMemberListViewModel @AssistedInject constructor(@Assisted initialState
                 .execute { async ->
                     copy(roomMemberSummaries = async)
                 }
+
+        if (room.isEncrypted()) {
+            room.rx().liveRoomMembers(roomMemberQueryParams)
+                    .observeOn(AndroidSchedulers.mainThread())
+                    .switchMap { membersSummary ->
+                        session.getLiveCryptoDeviceInfo(membersSummary.map { it.userId })
+                                .asObservable()
+                                .doOnError { Timber.e(it) }
+                                .map { deviceList ->
+                                    // If any key change, emit the userIds list
+                                    deviceList.groupBy { it.userId }.mapValues {
+                                        val allDeviceTrusted = it.value.fold(it.value.isNotEmpty()) { prev, next ->
+                                            prev && next.trustLevel?.isCrossSigningVerified().orFalse()
+                                        }
+                                        if (session.getCrossSigningService().getUserCrossSigningKeys(it.key)?.isTrusted().orFalse()) {
+                                            if (allDeviceTrusted) RoomEncryptionTrustLevel.Trusted else RoomEncryptionTrustLevel.Warning
+                                        } else {
+                                            RoomEncryptionTrustLevel.Default
+                                        }
+                                    }
+                                }
+                    }
+                    .execute { async ->
+                        copy(trustLevelMap = async)
+                    }
+        }
     }
 
     private fun observeRoomSummary() {
-        room.rx(session).liveRoomSummary()
+        room.rx().liveRoomSummary()
                 .unwrap()
                 .execute { async ->
                     copy(roomSummary = async)

vector/src/main/java/im/vector/riotx/features/roomprofile/members/RoomMemberListViewState.kt

@@ -20,6 +20,7 @@ import androidx.annotation.StringRes
 import com.airbnb.mvrx.Async
 import com.airbnb.mvrx.MvRxState
 import com.airbnb.mvrx.Uninitialized
+import im.vector.matrix.android.api.crypto.RoomEncryptionTrustLevel
 import im.vector.matrix.android.api.session.room.model.RoomMemberSummary
 import im.vector.matrix.android.api.session.room.model.RoomSummary
 import im.vector.riotx.R
@@ -28,7 +29,8 @@ import im.vector.riotx.features.roomprofile.RoomProfileArgs
 data class RoomMemberListViewState(
         val roomId: String,
         val roomSummary: Async<RoomSummary> = Uninitialized,
-        val roomMemberSummaries: Async<RoomMemberSummaries> = Uninitialized
+        val roomMemberSummaries: Async<RoomMemberSummaries> = Uninitialized,
+        val trustLevelMap: Async<Map<String, RoomEncryptionTrustLevel?>> = Uninitialized
 ) : MvRxState {
 
     constructor(args: RoomProfileArgs) : this(roomId = args.roomId)

vector/src/main/java/im/vector/riotx/features/roomprofile/settings/RoomSettingsViewModel.kt

@@ -52,7 +52,7 @@ class RoomSettingsViewModel @AssistedInject constructor(@Assisted initialState:
     }
 
     private fun observeRoomSummary() {
-        room.rx(session).liveRoomSummary()
+        room.rx().liveRoomSummary()
                 .unwrap()
                 .execute { async ->
                     copy(roomSummary = async)

vector/src/main/java/im/vector/riotx/features/settings/VectorSettingsSecurityPrivacyFragment.kt

@@ -426,6 +426,15 @@ class VectorSettingsSecurityPrivacyFragment @Inject constructor(
     // ==============================================================================================================
 
     private fun refreshMyDevice() {
+        session.getUserDevices(session.myUserId).map {
+            DeviceInfo(
+                    user_id = session.myUserId,
+                    deviceId = it.deviceId,
+                    displayName = it.displayName()
+            )
+        }.let {
+            refreshCryptographyPreference(it)
+        }
         // TODO Move to a ViewModel...
         session.getDevicesList(object : MatrixCallback<DevicesListResponse> {
             override fun onSuccess(data: DevicesListResponse) {

vector/src/main/java/im/vector/riotx/features/settings/devices/DevicesViewModel.kt

@@ -115,11 +115,20 @@ class DevicesViewModel @AssistedInject constructor(@Assisted initialState: Devic
      * It can be any mobile devices, and any browsers.
      */
     private fun refreshDevicesList() {
-        if (session.isCryptoEnabled() && !session.sessionParams.credentials.deviceId.isNullOrEmpty()) {
+        if (!session.sessionParams.credentials.deviceId.isNullOrEmpty()) {
+            // display something asap
+            val localKnown = session.getUserDevices(session.myUserId).map {
+                DeviceInfo(
+                        user_id = session.myUserId,
+                        deviceId = it.deviceId,
+                        displayName = it.displayName()
+                )
+            }
+
             setState {
                 copy(
                         // Keep known list if we have it, and let refresh go in backgroung
-                        devices = this.devices.takeIf { it is Success } ?: Loading()
+                        devices = this.devices.takeIf { it is Success } ?: Success(localKnown)
                 )
             }
 

vector/src/main/res/layout/item_profile_action.xml

@@ -20,7 +20,6 @@
         android:layout_height="wrap_content"
         android:layout_centerVertical="true"
         android:scaleType="center"
-        android:tint="?riotx_text_primary"
         android:visibility="gone"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintStart_toStartOf="parent"
@@ -60,13 +59,26 @@
         android:textSize="12sp"
         app:layout_constrainedWidth="true"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toStartOf="@+id/actionEditable"
+        app:layout_constraintEnd_toStartOf="@+id/actionSecondaryAccessory"
         app:layout_constraintHorizontal_bias="0.0"
         app:layout_constraintStart_toEndOf="@id/actionIcon"
         app:layout_constraintTop_toBottomOf="@id/actionTitle"
         app:layout_goneMarginStart="0dp"
         tools:text="@string/room_profile_encrypted_subtitle" />
 
+    <ImageView
+        android:id="@+id/actionSecondaryAccessory"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        tools:src="@drawable/ic_shield_warning"
+        android:layout_marginRight="8dp"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/actionEditable"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:visibility="visible" />
+
+
     <ImageView
         android:id="@+id/actionEditable"
         android:layout_width="wrap_content"