Use AEP for regv3 flows.

app/src/main/java/org/thoughtcrime/securesms/backup/v2/ui/subscription/MessageBackupsFlowFragment.kt

@@ -103,7 +103,7 @@ class MessageBackupsFlowFragment : ComposeFragment(), InAppPaymentCheckoutDelega
         val context = LocalContext.current
 
         MessageBackupsKeyRecordScreen(
-          messageBackupKey = state.messageBackupKey,
+          backupKey = state.accountEntropyPool.value,
           onNavigationClick = viewModel::goToPreviousStage,
           onNextClick = viewModel::goToNextStage,
           onCopyToClipboardClick = {

app/src/main/java/org/thoughtcrime/securesms/backup/v2/ui/subscription/MessageBackupsFlowState.kt

@@ -8,7 +8,7 @@ package org.thoughtcrime.securesms.backup.v2.ui.subscription
 import org.thoughtcrime.securesms.backup.v2.MessageBackupTier
 import org.thoughtcrime.securesms.database.InAppPaymentTable
 import org.thoughtcrime.securesms.keyvalue.SignalStore
-import org.whispersystems.signalservice.api.backup.MessageBackupKey
+import org.whispersystems.signalservice.api.AccountEntropyPool
 
 data class MessageBackupsFlowState(
   val hasBackupSubscriberAvailable: Boolean = false,
@@ -18,6 +18,6 @@ data class MessageBackupsFlowState(
   val inAppPayment: InAppPaymentTable.InAppPayment? = null,
   val startScreen: MessageBackupsStage,
   val stage: MessageBackupsStage = startScreen,
-  val messageBackupKey: MessageBackupKey = SignalStore.backup.messageBackupKey,
+  val accountEntropyPool: AccountEntropyPool = SignalStore.account.accountEntropyPool,
   val failure: Throwable? = null
 )

app/src/main/java/org/thoughtcrime/securesms/backup/v2/ui/subscription/MessageBackupsKeyRecordScreen.kt

@@ -48,10 +48,9 @@ import org.signal.core.ui.Previews
 import org.signal.core.ui.Scaffolds
 import org.signal.core.ui.SignalPreview
 import org.signal.core.ui.theme.SignalTheme
-import org.signal.core.util.Hex
 import org.thoughtcrime.securesms.R
-import org.whispersystems.signalservice.api.backup.MessageBackupKey
 import kotlin.random.Random
+import kotlin.random.nextInt
 import org.signal.core.ui.R as CoreUiR
 
 /**
@@ -61,7 +60,7 @@ import org.signal.core.ui.R as CoreUiR
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun MessageBackupsKeyRecordScreen(
-  messageBackupKey: MessageBackupKey,
+  backupKey: String,
   onNavigationClick: () -> Unit = {},
   onCopyToClipboardClick: (String) -> Unit = {},
   onNextClick: () -> Unit = {}
@@ -105,8 +104,8 @@ fun MessageBackupsKeyRecordScreen(
         modifier = Modifier.padding(top = 12.dp)
       )
 
-      val backupKeyString = remember(messageBackupKey) {
-        messageBackupKey.value.toList().chunked(2).map { Hex.toStringCondensed(it.toByteArray()) }.joinToString("  ")
+      val backupKeyString = remember(backupKey) {
+        backupKey.chunked(4).joinToString("  ")
       }
 
       Box(
@@ -259,7 +258,7 @@ private fun BottomSheetContent(
 private fun MessageBackupsKeyRecordScreenPreview() {
   Previews.Preview {
     MessageBackupsKeyRecordScreen(
-      messageBackupKey = MessageBackupKey(Random.nextBytes(32))
+      backupKey = (0 until 64).map { Random.nextInt(97..122).toChar() }.joinToString("")
     )
   }
 }

app/src/main/java/org/thoughtcrime/securesms/components/settings/app/backups/remote/BackupKeyDisplayFragment.kt

@@ -19,7 +19,7 @@ class BackupKeyDisplayFragment : ComposeFragment() {
   @Composable
   override fun FragmentContent() {
     MessageBackupsKeyRecordScreen(
-      messageBackupKey = SignalStore.backup.messageBackupKey,
+      backupKey = SignalStore.account.accountEntropyPool.value,
       onNavigationClick = { findNavController().popBackStack() },
       onCopyToClipboardClick = { Util.copyToClipboard(requireContext(), it) },
       onNextClick = { findNavController().popBackStack() }

app/src/main/java/org/thoughtcrime/securesms/keyvalue/SvrValues.kt

@@ -45,26 +45,6 @@ class SvrValues internal constructor(store: KeyValueStore) : SignalStoreValues(s
       .commit()
   }
 
-  @Deprecated("Switch to restoring AEP instead")
-  @Synchronized
-  fun setMasterKey(masterKey: MasterKey, pin: String?) {
-    store.beginWrite().apply {
-//      putBlob(MASTER_KEY, masterKey.serialize())
-      putLong(LAST_CREATE_FAILED_TIMESTAMP, -1)
-      putBoolean(OPTED_OUT, false)
-
-      if (pin != null) {
-        putString(LOCK_LOCAL_PIN_HASH, localPinHash(pin))
-        putString(PIN, pin)
-        remove(RESTORED_VIA_ACCOUNT_ENTROPY_KEY)
-      } else {
-        putBoolean(RESTORED_VIA_ACCOUNT_ENTROPY_KEY, true)
-        remove(LOCK_LOCAL_PIN_HASH)
-        remove(PIN)
-      }
-    }.commit()
-  }
-
   @Synchronized
   fun setPin(pin: String) {
     store.beginWrite()

app/src/main/java/org/thoughtcrime/securesms/registrationv3/data/QuickRegistrationRepository.kt

@@ -11,7 +11,6 @@ import kotlinx.coroutines.delay
 import kotlinx.coroutines.isActive
 import kotlinx.coroutines.withContext
 import org.signal.core.util.Base64.decode
-import org.signal.core.util.Hex
 import org.signal.core.util.isNotNullOrBlank
 import org.signal.core.util.logging.Log
 import org.signal.libsignal.protocol.InvalidKeyException
@@ -81,7 +80,7 @@ object QuickRegistrationRepository {
           RegistrationProvisionMessage(
             e164 = SignalStore.account.requireE164(),
             aci = SignalStore.account.requireAci().toByteString(),
-            accountEntropyPool = Hex.toStringCondensed(SignalStore.svr.masterKey.serialize()),
+            accountEntropyPool = SignalStore.account.accountEntropyPool.value,
             pin = pin,
             platform = RegistrationProvisionMessage.Platform.ANDROID,
             backupTimestampMs = SignalStore.backup.lastBackupTime.coerceAtLeast(0L),

app/src/main/java/org/thoughtcrime/securesms/registrationv3/ui/RegistrationViewModel.kt

@@ -21,7 +21,6 @@ import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.flow.updateAndGet
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
-import org.signal.core.util.Hex
 import org.signal.core.util.Stopwatch
 import org.signal.core.util.isNotNullOrBlank
 import org.signal.core.util.logging.Log
@@ -69,6 +68,7 @@ import org.thoughtcrime.securesms.registrationv3.data.RegistrationRepository
 import org.thoughtcrime.securesms.util.RemoteConfig
 import org.thoughtcrime.securesms.util.Util
 import org.thoughtcrime.securesms.util.dualsim.MccMncProducer
+import org.whispersystems.signalservice.api.AccountEntropyPool
 import org.whispersystems.signalservice.api.SvrNoDataException
 import org.whispersystems.signalservice.api.kbs.MasterKey
 import org.whispersystems.signalservice.internal.push.RegistrationSessionMetadataResponse
@@ -935,9 +935,10 @@ class RegistrationViewModel : ViewModel() {
         setPhoneNumber(PhoneNumberUtil.getInstance().parse(e164, null))
       }
 
-      // TODO [backups] use new data and not master key
-      val masterKey = MasterKey(Hex.fromStringCondensed(backupKey))
-      SignalStore.svr.setMasterKey(masterKey, pin)
+      val accountEntropyPool = AccountEntropyPool(backupKey)
+      SignalStore.account.restoreAccountEntropyPool(accountEntropyPool)
+
+      val masterKey = accountEntropyPool.deriveMasterKey()
       setRecoveryPassword(masterKey.deriveRegistrationRecoveryPassword())
       verifyReRegisterInternal(context = context, pin = pin, masterKey = masterKey)
 

app/src/main/java/org/thoughtcrime/securesms/registrationv3/ui/restore/EnterBackupKeyFragment.kt

@@ -29,7 +29,6 @@ import androidx.compose.material3.TextField
 import androidx.compose.material3.rememberModalBottomSheetState
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
-import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
@@ -48,6 +47,7 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.fragment.app.activityViewModels
 import androidx.fragment.app.viewModels
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.navigation.fragment.findNavController
 import kotlinx.coroutines.launch
 import org.signal.core.ui.BottomSheets
@@ -81,7 +81,7 @@ class EnterBackupKeyFragment : ComposeFragment() {
   @Composable
   override fun FragmentContent() {
     val state by viewModel.state
-    val sharedState by sharedViewModel.state.collectAsState()
+    val sharedState by sharedViewModel.state.collectAsStateWithLifecycle()
 
     EnterBackupKeyScreen(
       state = state,

app/src/main/java/org/thoughtcrime/securesms/registrationv3/ui/restore/EnterBackupKeyViewModel.kt

@@ -9,14 +9,11 @@ import androidx.compose.runtime.MutableState
 import androidx.compose.runtime.State
 import androidx.compose.runtime.mutableStateOf
 import androidx.lifecycle.ViewModel
-import org.signal.core.util.Hex
-import java.io.IOException
 
 class EnterBackupKeyViewModel : ViewModel() {
 
   companion object {
-    // TODO [backups] Set actual valid characters for key input
-    private val VALID_CHARACTERS = setOf('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f')
+    private val INVALID_CHARACTERS = Regex("[^0-9a-zA-Z]")
   }
 
   private val _state = mutableStateOf(
@@ -37,22 +34,11 @@ class EnterBackupKeyViewModel : ViewModel() {
   }
 
   private fun validate(length: Int, backupKey: String): Boolean {
-    if (backupKey.length != length) {
-      return false
-    }
-
-    try {
-      // TODO [backups] Actually validate key with requirements instead of just hex
-      Hex.fromStringCondensed(backupKey)
-    } catch (e: IOException) {
-      return false
-    }
-
-    return true
+    return backupKey.length == length
   }
 
   private fun String.removeIllegalCharacters(): String {
-    return filter { VALID_CHARACTERS.contains(it) }
+    return this.replace(INVALID_CHARACTERS, "")
   }
 
   private inline fun <T> MutableState<T>.update(update: T.() -> T) {