Bad Signature: Decrypting files

[tflidd]

The signature uses data from your database. So typically, you get this error, when you restore files with a database which is different to the time when the file was encrypted.

Here is a hint from the developer, how you can disable the signature verification (someone could have altered your file, but still better than to lose your data):

Decrypt My Files

Yes, you could disable the signature check by editing the code.But this is really not recommended. Only see this a action of last resort if there is no other way to decrypt your files again! If you edit this file https://github.com/nextcloud/server/blob/master/apps/encryption/lib/Crypto/Crypt.php#L481 and add between L480 and L481 “return true;” This way the signature check will always return true, but as said, that’s not a solution but only something you can do if nothing else helps.