Merge pull request #1259 from vector-im/feature/restore_backup_from_ssss

KeyBackup / Use 4S if key in quadS

CHANGES.md

@@ -455,6 +455,7 @@ Bugfix:
  - Fix messages with empty `in_reply_to` not rendering (#447)
  - Fix clear cache (#408) and Logout (#205)
  - Fix `(edited)` link can be copied to clipboard (#402)
+ - KeyBackup / SSSS | Should get the key from SSSS instead of asking recovery Key (#1163)
 
 Build:
  - Split APK: generate one APK per arch, to reduce APK size of about 30%

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

@@ -728,7 +728,8 @@ internal class DefaultKeysBackupService @Inject constructor(
                     if (backUp) {
                         maybeBackupKeys()
                     }
-
+                    // Save for next time and for gossiping
+                    saveBackupRecoveryKey(recoveryKey, keysVersionResult.version)
                     result
                 }
             }.foldToCallback(callback)

vector/src/main/java/im/vector/riotx/features/crypto/keysbackup/restore/KeysBackupRestoreActivity.kt

@@ -20,16 +20,22 @@ import android.content.Context
 import android.content.Intent
 import androidx.appcompat.app.AlertDialog
 import androidx.lifecycle.Observer
+import im.vector.matrix.android.api.session.crypto.crosssigning.KEYBACKUP_SECRET_SSSS_NAME
 import im.vector.riotx.R
 import im.vector.riotx.core.extensions.addFragmentToBackstack
 import im.vector.riotx.core.extensions.observeEvent
 import im.vector.riotx.core.extensions.replaceFragment
 import im.vector.riotx.core.platform.SimpleFragmentActivity
+import im.vector.riotx.core.ui.views.KeysBackupBanner
+import im.vector.riotx.features.crypto.quads.SharedSecureStorageActivity
 
 class KeysBackupRestoreActivity : SimpleFragmentActivity() {
 
     companion object {
 
+        private const val REQUEST_4S_SECRET = 100
+        const val SECRET_ALIAS = SharedSecureStorageActivity.DEFAULT_RESULT_KEYSTORE_ALIAS
+
         fun intent(context: Context): Intent {
             return Intent(context, KeysBackupRestoreActivity::class.java)
         }
@@ -39,14 +45,20 @@ class KeysBackupRestoreActivity : SimpleFragmentActivity() {
 
     private lateinit var viewModel: KeysBackupRestoreSharedViewModel
 
+    override fun onBackPressed() {
+        hideWaitingView()
+        super.onBackPressed()
+    }
+
     override fun initUiAndData() {
         super.initUiAndData()
         viewModel = viewModelProvider.get(KeysBackupRestoreSharedViewModel::class.java)
         viewModel.initSession(session)
-        viewModel.keyVersionResult.observe(this, Observer { keyVersion ->
 
-            if (keyVersion != null && supportFragmentManager.fragments.isEmpty()) {
-                val isBackupCreatedFromPassphrase = keyVersion.getAuthDataAsMegolmBackupAuthData()?.privateKeySalt != null
+        viewModel.keySourceModel.observe(this, Observer { keySource ->
+            if (keySource != null && !keySource.isInQuadS && supportFragmentManager.fragments.isEmpty()) {
+                val isBackupCreatedFromPassphrase =
+                        viewModel.keyVersionResult.value?.getAuthDataAsMegolmBackupAuthData()?.privateKeySalt != null
                 if (isBackupCreatedFromPassphrase) {
                     replaceFragment(R.id.container, KeysBackupRestoreFromPassphraseFragment::class.java)
                 } else {
@@ -69,7 +81,7 @@ class KeysBackupRestoreActivity : SimpleFragmentActivity() {
 
         if (viewModel.keyVersionResult.value == null) {
             // We need to fetch from API
-            viewModel.getLatestVersion(this)
+            viewModel.getLatestVersion()
         }
 
         viewModel.navigateEvent.observeEvent(this) { uxStateEvent ->
@@ -78,8 +90,25 @@ class KeysBackupRestoreActivity : SimpleFragmentActivity() {
                     addFragmentToBackstack(R.id.container, KeysBackupRestoreFromKeyFragment::class.java)
                 }
                 KeysBackupRestoreSharedViewModel.NAVIGATE_TO_SUCCESS          -> {
+                    viewModel.keyVersionResult.value?.version?.let {
+                        KeysBackupBanner.onRecoverDoneForVersion(this, it)
+                    }
                     replaceFragment(R.id.container, KeysBackupRestoreSuccessFragment::class.java)
                 }
+                KeysBackupRestoreSharedViewModel.NAVIGATE_TO_4S               -> {
+                    launch4SActivity()
+                }
+                KeysBackupRestoreSharedViewModel.NAVIGATE_FAILED_TO_LOAD_4S   -> {
+                    AlertDialog.Builder(this)
+                            .setTitle(R.string.unknown_error)
+                            .setMessage(R.string.error_failed_to_import_keys)
+                            .setCancelable(false)
+                            .setPositiveButton(R.string.ok) { _, _ ->
+                                // nop
+                                launch4SActivity()
+                            }
+                            .show()
+                }
             }
         }
 
@@ -93,4 +122,30 @@ class KeysBackupRestoreActivity : SimpleFragmentActivity() {
             finish()
         }
     }
+
+    private fun launch4SActivity() {
+        SharedSecureStorageActivity.newIntent(
+                context = this,
+                keyId = null, // default key
+                requestedSecrets = listOf(KEYBACKUP_SECRET_SSSS_NAME),
+                resultKeyStoreAlias = SECRET_ALIAS
+        ).let {
+            startActivityForResult(it, REQUEST_4S_SECRET)
+        }
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        if (requestCode == REQUEST_4S_SECRET) {
+            val extraResult = data?.getStringExtra(SharedSecureStorageActivity.EXTRA_DATA_RESULT)
+            if (resultCode == Activity.RESULT_OK && extraResult != null) {
+                viewModel.handleGotSecretFromSSSS(
+                        extraResult,
+                        SECRET_ALIAS
+                )
+            } else {
+                finish()
+            }
+        }
+        super.onActivityResult(requestCode, resultCode, data)
+    }
 }

vector/src/main/java/im/vector/riotx/features/crypto/keysbackup/restore/KeysBackupRestoreFromKeyFragment.kt

@@ -82,7 +82,7 @@ class KeysBackupRestoreFromKeyFragment @Inject constructor()
         if (value.isNullOrBlank()) {
             viewModel.recoveryCodeErrorText.value = context?.getString(R.string.keys_backup_recovery_code_empty_error_message)
         } else {
-            viewModel.recoverKeys(requireContext(), sharedViewModel)
+            viewModel.recoverKeys(sharedViewModel)
         }
     }
 

vector/src/main/java/im/vector/riotx/features/crypto/keysbackup/restore/KeysBackupRestoreFromKeyViewModel.kt

@@ -15,21 +15,19 @@
  */
 package im.vector.riotx.features.crypto.keysbackup.restore
 
-import android.content.Context
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
-import im.vector.matrix.android.api.MatrixCallback
-import im.vector.matrix.android.api.listeners.StepProgressListener
-import im.vector.matrix.android.api.session.crypto.keysbackup.KeysBackupService
-import im.vector.matrix.android.internal.crypto.keysbackup.model.rest.KeysVersionResult
-import im.vector.matrix.android.internal.crypto.model.ImportRoomKeysResult
+import androidx.lifecycle.viewModelScope
 import im.vector.riotx.R
 import im.vector.riotx.core.platform.WaitingViewData
-import im.vector.riotx.core.ui.views.KeysBackupBanner
-import timber.log.Timber
+import im.vector.riotx.core.resources.StringProvider
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 import javax.inject.Inject
 
-class KeysBackupRestoreFromKeyViewModel @Inject constructor() : ViewModel() {
+class KeysBackupRestoreFromKeyViewModel @Inject constructor(
+        private val stringProvider: StringProvider
+) : ViewModel() {
 
     var recoveryCode: MutableLiveData<String> = MutableLiveData()
     var recoveryCodeErrorText: MutableLiveData<String> = MutableLiveData()
@@ -45,66 +43,16 @@ class KeysBackupRestoreFromKeyViewModel @Inject constructor() : ViewModel() {
         recoveryCodeErrorText.value = null
     }
 
-    fun recoverKeys(context: Context, sharedViewModel: KeysBackupRestoreSharedViewModel) {
-        val session = sharedViewModel.session
-        val keysBackup = session.cryptoService().keysBackupService()
-
+    fun recoverKeys(sharedViewModel: KeysBackupRestoreSharedViewModel) {
+        sharedViewModel.loadingEvent.postValue(WaitingViewData(stringProvider.getString(R.string.loading)))
         recoveryCodeErrorText.value = null
-        val recoveryKey = recoveryCode.value!!
-
-        val keysVersionResult = sharedViewModel.keyVersionResult.value!!
-
-        keysBackup.restoreKeysWithRecoveryKey(keysVersionResult,
-                recoveryKey,
-                null,
-                session.myUserId,
-                object : StepProgressListener {
-                    override fun onStepProgress(step: StepProgressListener.Step) {
-                        when (step) {
-                            is StepProgressListener.Step.DownloadingKey -> {
-                                sharedViewModel.loadingEvent.postValue(WaitingViewData(context.getString(R.string.keys_backup_restoring_waiting_message)
-                                        + "\n" + context.getString(R.string.keys_backup_restoring_downloading_backup_waiting_message),
-                                        isIndeterminate = true))
-                            }
-                            is StepProgressListener.Step.ImportingKey   -> {
-                                // Progress 0 can take a while, display an indeterminate progress in this case
-                                if (step.progress == 0) {
-                                    sharedViewModel.loadingEvent.postValue(WaitingViewData(context.getString(R.string.keys_backup_restoring_waiting_message)
-                                            + "\n" + context.getString(R.string.keys_backup_restoring_importing_keys_waiting_message),
-                                            isIndeterminate = true))
-                                } else {
-                                    sharedViewModel.loadingEvent.postValue(WaitingViewData(context.getString(R.string.keys_backup_restoring_waiting_message)
-                                            + "\n" + context.getString(R.string.keys_backup_restoring_importing_keys_waiting_message),
-                                            step.progress,
-                                            step.total))
-                                }
-                            }
-                        }
-                    }
-                },
-                object : MatrixCallback<ImportRoomKeysResult> {
-                    override fun onSuccess(data: ImportRoomKeysResult) {
-                        sharedViewModel.loadingEvent.value = null
-                        sharedViewModel.didRecoverSucceed(data)
-
-                        KeysBackupBanner.onRecoverDoneForVersion(context, keysVersionResult.version!!)
-                        trustOnDecrypt(keysBackup, keysVersionResult)
-                    }
-
-                    override fun onFailure(failure: Throwable) {
-                        sharedViewModel.loadingEvent.value = null
-                        recoveryCodeErrorText.value = context.getString(R.string.keys_backup_recovery_code_error_decrypt)
-                        Timber.e(failure, "## onUnexpectedError")
-                    }
-                })
-    }
-
-    private fun trustOnDecrypt(keysBackup: KeysBackupService, keysVersionResult: KeysVersionResult) {
-        keysBackup.trustKeysBackupVersion(keysVersionResult, true,
-                object : MatrixCallback<Unit> {
-                    override fun onSuccess(data: Unit) {
-                        Timber.v("##### trustKeysBackupVersion onSuccess")
-                    }
-                })
+        viewModelScope.launch(Dispatchers.IO) {
+            val recoveryKey = recoveryCode.value!!
+            try {
+                sharedViewModel.recoverUsingBackupPass(recoveryKey)
+            } catch (failure: Throwable) {
+                recoveryCodeErrorText.value = stringProvider.getString(R.string.keys_backup_recovery_code_error_decrypt)
+            }
+        }
     }
 }

vector/src/main/java/im/vector/riotx/features/crypto/keysbackup/restore/KeysBackupRestoreFromPassphraseFragment.kt

@@ -36,7 +36,7 @@ import im.vector.riotx.core.extensions.showPassword
 import im.vector.riotx.core.platform.VectorBaseFragment
 import javax.inject.Inject
 
-class KeysBackupRestoreFromPassphraseFragment @Inject constructor(): VectorBaseFragment() {
+class KeysBackupRestoreFromPassphraseFragment @Inject constructor() : VectorBaseFragment() {
 
     override fun getLayoutResId() = R.layout.fragment_keys_backup_restore_from_passphrase
 
@@ -119,7 +119,7 @@ class KeysBackupRestoreFromPassphraseFragment @Inject constructor(): VectorBaseF
         if (value.isNullOrBlank()) {
             viewModel.passphraseErrorText.value = context?.getString(R.string.passphrase_empty_error_message)
         } else {
-            viewModel.recoverKeys(context!!, sharedViewModel)
+            viewModel.recoverKeys(sharedViewModel)
         }
     }
 }

vector/src/main/java/im/vector/riotx/features/crypto/keysbackup/restore/KeysBackupRestoreFromPassphraseViewModel.kt

@@ -15,21 +15,18 @@
  */
 package im.vector.riotx.features.crypto.keysbackup.restore
 
-import android.content.Context
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
-import im.vector.matrix.android.api.MatrixCallback
-import im.vector.matrix.android.api.listeners.StepProgressListener
-import im.vector.matrix.android.api.session.crypto.keysbackup.KeysBackupService
-import im.vector.matrix.android.internal.crypto.keysbackup.model.rest.KeysVersionResult
-import im.vector.matrix.android.internal.crypto.model.ImportRoomKeysResult
+import androidx.lifecycle.viewModelScope
 import im.vector.riotx.R
-import im.vector.riotx.core.platform.WaitingViewData
-import im.vector.riotx.core.ui.views.KeysBackupBanner
-import timber.log.Timber
+import im.vector.riotx.core.resources.StringProvider
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 import javax.inject.Inject
 
-class KeysBackupRestoreFromPassphraseViewModel @Inject constructor() : ViewModel() {
+class KeysBackupRestoreFromPassphraseViewModel @Inject constructor(
+        private val stringProvider: StringProvider
+) : ViewModel() {
 
     var passphrase: MutableLiveData<String> = MutableLiveData()
     var passphraseErrorText: MutableLiveData<String> = MutableLiveData()
@@ -48,71 +45,14 @@ class KeysBackupRestoreFromPassphraseViewModel @Inject constructor() : ViewModel
         passphraseErrorText.value = null
     }
 
-    fun recoverKeys(context: Context, sharedViewModel: KeysBackupRestoreSharedViewModel) {
-        val keysBackup = sharedViewModel.session.cryptoService().keysBackupService()
-
+    fun recoverKeys(sharedViewModel: KeysBackupRestoreSharedViewModel) {
         passphraseErrorText.value = null
-
-        val keysVersionResult = sharedViewModel.keyVersionResult.value!!
-
-        keysBackup.restoreKeyBackupWithPassword(keysVersionResult,
-                passphrase.value!!,
-                null,
-                sharedViewModel.session.myUserId,
-                object : StepProgressListener {
-                    override fun onStepProgress(step: StepProgressListener.Step) {
-                        when (step) {
-                            is StepProgressListener.Step.ComputingKey -> {
-                                sharedViewModel.loadingEvent.postValue(WaitingViewData(context.getString(R.string.keys_backup_restoring_waiting_message)
-                                        + "\n" + context.getString(R.string.keys_backup_restoring_computing_key_waiting_message),
-                                        step.progress,
-                                        step.total))
-                            }
-                            is StepProgressListener.Step.DownloadingKey -> {
-                                sharedViewModel.loadingEvent.postValue(WaitingViewData(context.getString(R.string.keys_backup_restoring_waiting_message)
-                                        + "\n" + context.getString(R.string.keys_backup_restoring_downloading_backup_waiting_message),
-                                        isIndeterminate = true))
-                            }
-                            is StepProgressListener.Step.ImportingKey -> {
-                                Timber.d("backupKeys.ImportingKey.progress: ${step.progress}")
-                                // Progress 0 can take a while, display an indeterminate progress in this case
-                                if (step.progress == 0) {
-                                    sharedViewModel.loadingEvent.postValue(WaitingViewData(context.getString(R.string.keys_backup_restoring_waiting_message)
-                                            + "\n" + context.getString(R.string.keys_backup_restoring_importing_keys_waiting_message),
-                                            isIndeterminate = true))
-                                } else {
-                                    sharedViewModel.loadingEvent.postValue(WaitingViewData(context.getString(R.string.keys_backup_restoring_waiting_message)
-                                            + "\n" + context.getString(R.string.keys_backup_restoring_importing_keys_waiting_message),
-                                            step.progress,
-                                            step.total))
-                                }
-                            }
-                        }
-                    }
-                },
-                object : MatrixCallback<ImportRoomKeysResult> {
-                    override fun onSuccess(data: ImportRoomKeysResult) {
-                        sharedViewModel.loadingEvent.value = null
-                        sharedViewModel.didRecoverSucceed(data)
-
-                        KeysBackupBanner.onRecoverDoneForVersion(context, keysVersionResult.version!!)
-                        trustOnDecrypt(keysBackup, keysVersionResult)
-                    }
-
-                    override fun onFailure(failure: Throwable) {
-                        sharedViewModel.loadingEvent.value = null
-                        passphraseErrorText.value = context.getString(R.string.keys_backup_passphrase_error_decrypt)
-                        Timber.e(failure, "## onUnexpectedError")
-                    }
-                })
-    }
-
-    private fun trustOnDecrypt(keysBackup: KeysBackupService, keysVersionResult: KeysVersionResult) {
-        keysBackup.trustKeysBackupVersion(keysVersionResult, true,
-                object : MatrixCallback<Unit> {
-                    override fun onSuccess(data: Unit) {
-                        Timber.v("##### trustKeysBackupVersion onSuccess")
-                    }
-                })
+        viewModelScope.launch(Dispatchers.IO) {
+            try {
+                sharedViewModel.recoverUsingBackupPass(passphrase.value!!)
+            } catch (failure: Throwable) {
+                passphraseErrorText.value = stringProvider.getString(R.string.keys_backup_passphrase_error_decrypt)
+            }
+        }
     }
 }

vector/src/main/java/im/vector/riotx/features/crypto/keysbackup/restore/KeysBackupRestoreSharedViewModel.kt

@@ -15,30 +15,52 @@
  */
 package im.vector.riotx.features.crypto.keysbackup.restore
 
-import android.content.Context
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
 import im.vector.matrix.android.api.MatrixCallback
+import im.vector.matrix.android.api.listeners.StepProgressListener
 import im.vector.matrix.android.api.session.Session
+import im.vector.matrix.android.api.session.crypto.crosssigning.KEYBACKUP_SECRET_SSSS_NAME
+import im.vector.matrix.android.api.session.crypto.keysbackup.KeysBackupService
+import im.vector.matrix.android.api.session.securestorage.KeyInfoResult
+import im.vector.matrix.android.internal.crypto.crosssigning.fromBase64
 import im.vector.matrix.android.internal.crypto.keysbackup.model.rest.KeysVersionResult
+import im.vector.matrix.android.internal.crypto.keysbackup.util.computeRecoveryKey
 import im.vector.matrix.android.internal.crypto.model.ImportRoomKeysResult
+import im.vector.matrix.android.internal.util.awaitCallback
 import im.vector.riotx.R
 import im.vector.riotx.core.platform.WaitingViewData
+import im.vector.riotx.core.resources.StringProvider
 import im.vector.riotx.core.utils.LiveEvent
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import timber.log.Timber
 import javax.inject.Inject
 
-class KeysBackupRestoreSharedViewModel @Inject constructor() : ViewModel() {
+class KeysBackupRestoreSharedViewModel @Inject constructor(
+        private val stringProvider: StringProvider
+) : ViewModel() {
+
+    data class KeySource(
+            val isInMemory: Boolean,
+            val isInQuadS: Boolean
+    )
 
     companion object {
         const val NAVIGATE_TO_RECOVER_WITH_KEY = "NAVIGATE_TO_RECOVER_WITH_KEY"
         const val NAVIGATE_TO_SUCCESS = "NAVIGATE_TO_SUCCESS"
+        const val NAVIGATE_TO_4S = "NAVIGATE_TO_4S"
+        const val NAVIGATE_FAILED_TO_LOAD_4S = "NAVIGATE_FAILED_TO_LOAD_4S"
     }
 
     lateinit var session: Session
 
     var keyVersionResult: MutableLiveData<KeysVersionResult> = MutableLiveData()
 
+    var keySourceModel: MutableLiveData<KeySource> = MutableLiveData()
+
     private var _keyVersionResultError: MutableLiveData<LiveEvent<String>> = MutableLiveData()
     val keyVersionResultError: LiveData<LiveEvent<String>>
         get() = _keyVersionResultError
@@ -62,30 +84,192 @@ class KeysBackupRestoreSharedViewModel @Inject constructor() : ViewModel() {
         this.session = session
     }
 
-    fun getLatestVersion(context: Context) {
-        val keysBackup = session.cryptoService().keysBackupService()
-
-        loadingEvent.value = WaitingViewData(context.getString(R.string.keys_backup_restore_is_getting_backup_version))
-
-        keysBackup.getCurrentVersion(object : MatrixCallback<KeysVersionResult?> {
-            override fun onSuccess(data: KeysVersionResult?) {
-                loadingEvent.value = null
-                if (data?.version.isNullOrBlank()) {
-                    // should not happen
-                    _keyVersionResultError.value = LiveEvent(context.getString(R.string.keys_backup_get_version_error, ""))
-                } else {
-                    keyVersionResult.value = data
+    val progressObserver = object : StepProgressListener {
+        override fun onStepProgress(step: StepProgressListener.Step) {
+            when (step) {
+                is StepProgressListener.Step.ComputingKey   -> {
+                    loadingEvent.postValue(WaitingViewData(stringProvider.getString(R.string.keys_backup_restoring_waiting_message)
+                            + "\n" + stringProvider.getString(R.string.keys_backup_restoring_computing_key_waiting_message),
+                            step.progress,
+                            step.total))
+                }
+                is StepProgressListener.Step.DownloadingKey -> {
+                    loadingEvent.postValue(WaitingViewData(stringProvider.getString(R.string.keys_backup_restoring_waiting_message)
+                            + "\n" + stringProvider.getString(R.string.keys_backup_restoring_downloading_backup_waiting_message),
+                            isIndeterminate = true))
+                }
+                is StepProgressListener.Step.ImportingKey   -> {
+                    Timber.d("backupKeys.ImportingKey.progress: ${step.progress}")
+                    // Progress 0 can take a while, display an indeterminate progress in this case
+                    if (step.progress == 0) {
+                        loadingEvent.postValue(WaitingViewData(stringProvider.getString(R.string.keys_backup_restoring_waiting_message)
+                                + "\n" + stringProvider.getString(R.string.keys_backup_restoring_importing_keys_waiting_message),
+                                isIndeterminate = true))
+                    } else {
+                        loadingEvent.postValue(WaitingViewData(stringProvider.getString(R.string.keys_backup_restoring_waiting_message)
+                                + "\n" + stringProvider.getString(R.string.keys_backup_restoring_importing_keys_waiting_message),
+                                step.progress,
+                                step.total))
+                    }
                 }
             }
+        }
+    }
 
-            override fun onFailure(failure: Throwable) {
-                loadingEvent.value = null
-                _keyVersionResultError.value = LiveEvent(context.getString(R.string.keys_backup_get_version_error, failure.localizedMessage))
+    fun getLatestVersion() {
+        val keysBackup = session.cryptoService().keysBackupService()
 
-                // TODO For network error
-                //  _keyVersionResultError.value = LiveEvent(context.getString(R.string.network_error_please_check_and_retry))
+        loadingEvent.value = WaitingViewData(stringProvider.getString(R.string.keys_backup_restore_is_getting_backup_version))
+
+        viewModelScope.launch(Dispatchers.IO) {
+            try {
+                val version = awaitCallback<KeysVersionResult?> {
+                    keysBackup.getCurrentVersion(it)
+                }
+                if (version?.version == null) {
+                    loadingEvent.postValue(null)
+                    _keyVersionResultError.postValue(LiveEvent(stringProvider.getString(R.string.keys_backup_get_version_error, "")))
+                    return@launch
+                }
+
+                keyVersionResult.postValue(version)
+                // Let's check if there is quads
+                val isBackupKeyInQuadS = isBackupKeyInQuadS()
+
+                val savedSecret = session.cryptoService().keysBackupService().getKeyBackupRecoveryKeyInfo()
+                if (savedSecret != null && savedSecret.version == version.version) {
+                    // key is in memory!
+                    keySourceModel.postValue(
+                            KeySource(isInMemory = true, isInQuadS = true)
+                    )
+                    // Go and use it!!
+                    try {
+                        recoverUsingBackupRecoveryKey(savedSecret.recoveryKey)
+                    } catch (failure: Throwable) {
+                        keySourceModel.postValue(
+                                KeySource(isInMemory = false, isInQuadS = true)
+                        )
+                    }
+                } else if (isBackupKeyInQuadS) {
+                    // key is in QuadS!
+                    keySourceModel.postValue(
+                            KeySource(isInMemory = false, isInQuadS = true)
+                    )
+                    _navigateEvent.postValue(LiveEvent(NAVIGATE_TO_4S))
+                } else {
+                    // we need to restore directly
+                    keySourceModel.postValue(
+                            KeySource(isInMemory = false, isInQuadS = false)
+                    )
+                }
+
+                loadingEvent.postValue(null)
+            } catch (failure: Throwable) {
+                loadingEvent.postValue(null)
+                _keyVersionResultError.postValue(LiveEvent(stringProvider.getString(R.string.keys_backup_get_version_error, failure.localizedMessage)))
             }
-        })
+        }
+    }
+
+    fun handleGotSecretFromSSSS(cipherData: String, alias: String) {
+        try {
+            cipherData.fromBase64().inputStream().use { ins ->
+                val res = session.loadSecureSecret<Map<String, String>>(ins, alias)
+                val secret = res?.get(KEYBACKUP_SECRET_SSSS_NAME)
+                if (secret == null) {
+                    _navigateEvent.postValue(
+                            LiveEvent(NAVIGATE_FAILED_TO_LOAD_4S)
+                    )
+                    return
+                }
+                loadingEvent.value = WaitingViewData(stringProvider.getString(R.string.keys_backup_restore_is_getting_backup_version))
+
+                viewModelScope.launch(Dispatchers.IO) {
+                    try {
+                        recoverUsingBackupRecoveryKey(computeRecoveryKey(secret.fromBase64()))
+                    } catch (failure: Throwable) {
+                        _navigateEvent.postValue(
+                                LiveEvent(NAVIGATE_FAILED_TO_LOAD_4S)
+                        )
+                    }
+                }
+            }
+        } catch (failure: Throwable) {
+            _navigateEvent.postValue(
+                    LiveEvent(NAVIGATE_FAILED_TO_LOAD_4S)
+            )
+        }
+    }
+
+    suspend fun recoverUsingBackupPass(passphrase: String) {
+        val keysBackup = session.cryptoService().keysBackupService()
+        val keyVersion = keyVersionResult.value ?: return
+
+        loadingEvent.postValue(WaitingViewData(stringProvider.getString(R.string.loading)))
+
+        try {
+            val result = awaitCallback<ImportRoomKeysResult> {
+                keysBackup.restoreKeyBackupWithPassword(keyVersion,
+                        passphrase,
+                        null,
+                        session.myUserId,
+                        progressObserver,
+                        it
+                )
+            }
+            loadingEvent.postValue(null)
+            didRecoverSucceed(result)
+            trustOnDecrypt(keysBackup, keyVersion)
+        } catch (failure: Throwable) {
+            loadingEvent.postValue(null)
+            throw failure
+        }
+    }
+
+    suspend fun recoverUsingBackupRecoveryKey(recoveryKey: String) {
+        val keysBackup = session.cryptoService().keysBackupService()
+        val keyVersion = keyVersionResult.value ?: return
+
+        loadingEvent.postValue(WaitingViewData(stringProvider.getString(R.string.loading)))
+
+        try {
+            val result = awaitCallback<ImportRoomKeysResult> {
+                keysBackup.restoreKeysWithRecoveryKey(keyVersion,
+                        recoveryKey,
+                        null,
+                        session.myUserId,
+                        progressObserver,
+                        it
+                )
+            }
+            loadingEvent.postValue(null)
+            didRecoverSucceed(result)
+            trustOnDecrypt(keysBackup, keyVersion)
+        } catch (failure: Throwable) {
+            loadingEvent.postValue(null)
+            throw failure
+        }
+    }
+
+    private fun isBackupKeyInQuadS(): Boolean {
+        val sssBackupSecret = session.getAccountDataEvent(KEYBACKUP_SECRET_SSSS_NAME)
+                ?: return false
+
+        // Some sanity ?
+        val defaultKeyResult = session.sharedSecretStorageService.getDefaultKey()
+        val keyInfo = (defaultKeyResult as? KeyInfoResult.Success)?.keyInfo
+                ?: return false
+
+        return (sssBackupSecret.content["encrypted"] as? Map<*, *>)?.containsKey(keyInfo.id) == true
+    }
+
+    private fun trustOnDecrypt(keysBackup: KeysBackupService, keysVersionResult: KeysVersionResult) {
+        keysBackup.trustKeysBackupVersion(keysVersionResult, true,
+                object : MatrixCallback<Unit> {
+                    override fun onSuccess(data: Unit) {
+                        Timber.v("##### trustKeysBackupVersion onSuccess")
+                    }
+                })
     }
 
     fun moveToRecoverWithKey() {
@@ -94,6 +278,6 @@ class KeysBackupRestoreSharedViewModel @Inject constructor() : ViewModel() {
 
     fun didRecoverSucceed(result: ImportRoomKeysResult) {
         importKeyResult = result
-        _navigateEvent.value = LiveEvent(NAVIGATE_TO_SUCCESS)
+        _navigateEvent.postValue(LiveEvent(NAVIGATE_TO_SUCCESS))
     }
 }