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#1 2013-05-19 10:34:43

Registered: 2011-07-27
Posts: 19

GPG signature verification always fails

I'm trying to verify a signature on GPG-encrypted file. But it always shows some mysterious problem:

$ gpg --symmetric --sign backup.tar.7z

You need a passphrase to unlock the secret key for
user: "..."
2048-bit RSA key, ID 3E36230B, created 2012-08-13

gpg: CAST5 encryption will be used
$ gpg --verify backup.tar.7z.gpg
gpg: verify signatures failed: Unexpected error
$ gpg backup.tar.7z.gpg
gpg: CAST5 encrypted data
gpg: encrypted with 1 passphrase
gpg: Signature made Sun 19 May 2013 14:27:22 MSK using RSA key ID 3E36230B
gpg: Good signature from "..."
gpg: WARNING: message was not integrity protected

According to the manpage, --verify should work also for integrated signatures, while it does not. Using plain decrypt is not an option as the encrypted file is very large.

What am I doing wrong?


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