"Unexpected end of file" / "Error in frame 2"

[sebastien-plutniak]

Hi,

On (arch)linux
sigbak export-messages signal.backup messages raises an error:

sigbak: Unexpected end of file

and
sigbak check-backup signal.backup raises:

sigbak: Unexpected end of file
sigbak: Error in frame 2

Does the problem lies in my backup file? What other useful information may I give you?

Thank you in advance !

[tbvdm]

Hi. It is possible that your backup file has been truncated. Is your backup file larger than, say, 1 MB?

The other possibility is that the passphrase is incorrect. Are you sure you have the right passphrase?

[sebastien-plutniak]

Hi, my backup is much larger than 1 MO, it is more about 2.5 Go =)
Is that an issue for sigbak?

Yes, I think my passphrase is correct (if I change it, it raises a “MAC” error)

[tbvdm]

Hi, my backup is much larger than 1 MO, it is more about 2.5 Go =)
Is that an issue for sigbak?

No, that's fine. It simply means that we can rule out truncation.

Yes, I think my passphrase is correct (if I change it, it raises a “MAC” error)

Unfortunately, that does not imply that the other passphrase is correct. :) Every invalid passphrase will produce an error, but the errors may be different.

Are you really sure your passphrase is correct? You can verify it in Signal: Settings > Chats > Chat backups > Verify backup passphrase.

[sebastien-plutniak]

Thanks, I've checked the passphrase and… you are right, it was wrong. With the correct passphrase it works well!
Sorry for that! I close the issue.