Unable to restore encrypted backup #7637
Description
- I have searched open and closed issues for duplicates
- I am submitting a bug report for existing functionality that does not work as intended
- I have read https://github.com/signalapp/Signal-Android/wiki/Submitting-useful-bug-reports
- This isn't a feature request or a discussion topic
Bug description
I can not restore the new encrypted backup after I remove and re-install Signal on a device. Same issue as #7446 that was closed in the mega cleanup.
Steps to reproduce
- install Signal 4.18.1 (official Playstore apk).
- register Signal.
- Exchange some messages with other Signal users.
- Create full backup.
- Uninstall Signal
- Install Signal
- Start Signal
- Try to restore backup
Actual result: I always get a toast with "Incorrect Backup Passphrase".
Expected result: The backup is restored.
Screenshots
The backup file with the password shown above can be found at https://mega.nz/#!0JAE0ICZ!m7mdGvQbl1wkTpJJbf1FIMKvxCovreG_gDW7JkfQ-xI
Device info
Device: Sony Z3 Compact (D5508)
Android version: 6.0.1
Signal version: 4.18.1
Link to debug log
Since Signal did not start I placed a logcat output on https://mega.nz/#!0JhxXZqA!oR2jjR_POoZqw_vfws92KwgVU-uq3F2UT9oefuMCHnI
The relecvant part is:
04-04 23:32:22.214 W/RegistrationActivity(30637): java.io.IOException: Bad MAC
04-04 23:32:22.214 W/RegistrationActivity(30637): at org.thoughtcrime.securesms.backup.FullBackupImporter$BackupRecordInputStream.readFrame(FullBackupImporter.java:248)
04-04 23:32:22.214 W/RegistrationActivity(30637): at org.thoughtcrime.securesms.backup.FullBackupImporter$BackupRecordInputStream.readFrame(FullBackupImporter.java:189)
04-04 23:32:22.214 W/RegistrationActivity(30637): at org.thoughtcrime.securesms.backup.FullBackupImporter.importFile(FullBackupImporter.java:67)
04-04 23:32:22.214 W/RegistrationActivity(30637): at org.thoughtcrime.securesms.RegistrationActivity$2.doInBackground(RegistrationActivity.java:372)
04-04 23:32:22.214 W/RegistrationActivity(30637): at org.thoughtcrime.securesms.RegistrationActivity$2.doInBackground(RegistrationActivity.java:364)
04-04 23:32:22.214 W/RegistrationActivity(30637): at android.os.AsyncTask$2.call(AsyncTask.java:295)
04-04 23:32:22.214 W/RegistrationActivity(30637): at java.util.concurrent.FutureTask.run(FutureTask.java:237)
04-04 23:32:22.214 W/RegistrationActivity(30637): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
04-04 23:32:22.214 W/RegistrationActivity(30637): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
04-04 23:32:22.214 W/RegistrationActivity(30637): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
04-04 23:32:22.214 W/RegistrationActivity(30637): at java.lang.Thread.run(Thread.java:818)
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