AES cipher support 1.0.6 and 1.0.7

David Shaw dshaw at
Mon Apr 26 17:35:12 CEST 2004

On Tue, Apr 20, 2004 at 01:45:59PM -0400, Hasnain Mujtaba wrote:
> Hi, 
> I encrypted a 2GB file using a DH/DSS 2048/1024 (AES-128) keypair using
> a third party tool.
> I gave the encrypted file to GPG 1.0.6 but it failed to decrypt the
> message with the following reason:
> gpg: protection algorithm 254 is not supported
> gpg: encrypted with 2048-bit ELG-E key, ID 3F29C018, created 2004-04-16
>       "GPG-DH-2048 <gpgDH2048 at>"
> gpg: public key decryption failed: unknown cipher algorithm
> gpg: decryption failed: secret key not available
> Then I gave the encrypted file to GPG 1.0.7 and the decryption
> succeeded.
> I'm wondering if this is due to AES support, or lack of, in the two
> versions.

No.  It's due to the new secret key format in 1.0.7 and later.


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