From ca8c494fc40ea43dadbbb25b426d9e6f053e69f1 Mon Sep 17 00:00:00 2001
From: Michelle Tang <mtang@signal.org>
Date: Tue, 26 May 2026 11:43:39 -0400
Subject: [PATCH] Reset KT for username changes in storage service.

---
 .../org/thoughtcrime/securesms/storage/StorageSyncHelper.kt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/app/src/main/java/org/thoughtcrime/securesms/storage/StorageSyncHelper.kt b/app/src/main/java/org/thoughtcrime/securesms/storage/StorageSyncHelper.kt
index 725e58b2fc..787b0f319c 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/storage/StorageSyncHelper.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/storage/StorageSyncHelper.kt
@@ -10,6 +10,7 @@ import org.signal.core.util.Util
 import org.signal.core.util.UuidUtil
 import org.signal.core.util.logging.Log
 import org.signal.core.util.toByteArray
+import org.signal.libsignal.net.KeyTransparency
 import org.thoughtcrime.securesms.backup.v2.MessageBackupTier
 import org.thoughtcrime.securesms.components.settings.app.subscription.InAppPaymentsRepository.getSubscriber
 import org.thoughtcrime.securesms.components.settings.app.subscription.InAppPaymentsRepository.isUserManuallyCancelled
@@ -17,8 +18,10 @@ import org.thoughtcrime.securesms.components.settings.app.subscription.InAppPaym
 import org.thoughtcrime.securesms.database.NotificationProfileTables
 import org.thoughtcrime.securesms.database.SignalDatabase
 import org.thoughtcrime.securesms.database.model.InAppPaymentSubscriberRecord
+import org.thoughtcrime.securesms.database.model.KeyTransparencyStore
 import org.thoughtcrime.securesms.database.model.RecipientRecord
 import org.thoughtcrime.securesms.dependencies.AppDependencies
+import org.thoughtcrime.securesms.dependencies.KeyTransparencyApi
 import org.thoughtcrime.securesms.jobs.RetrieveProfileAvatarJob
 import org.thoughtcrime.securesms.jobs.StorageSyncJob
 import org.thoughtcrime.securesms.keyvalue.AccountValues
@@ -306,6 +309,9 @@ object StorageSyncHelper {
       SignalStore.account.username = update.new.proto.username
       SignalStore.account.usernameSyncState = AccountValues.UsernameSyncState.IN_SYNC
       SignalStore.account.usernameSyncErrorCount = 0
+
+      Log.i(TAG, "Resetting KT data due to username change in storage service.")
+      KeyTransparencyApi.reset(aci = SignalStore.account.requireAci().libSignalAci, field = KeyTransparency.AccountDataField.USERNAME_HASH, keyTransparencyStore = KeyTransparencyStore)
     }
 
     if (update.new.proto.usernameLink != null) {