GNUPG 1.2.1 problem

David Shaw dshaw at
Thu May 21 18:00:40 CEST 2009

On May 20, 2009, at 5:25 AM, Paweł Żuk wrote:

> I use gnupg 1.2.1 version
> For same cases during decrypting I receive:
> gpg: encrypted with 2048-bit RSA key, ID 453733BB, created  
> 2006-02-13          "Comapny (User) <userid at>"         gpg:  
> md_enable: algorithm 8 not available                                  
> gpg: Signature made Tue May 19 16:10:09 2009 CEST using RSA key ID  
> FD947F6A
> gpg: Can't check signature: unknown digest algorithm
> There is any possibility to skip this error.

Yes.  If you use the --skip-verify option to GPG, it will do the  
decryption step, but not do the verification step.

Note, though, that may not be what you want if the signature over the  
data is important to you.  In that case, you must either upgrade or  
ask the person sending you the message to use a digest algorithm that  
you can handle.  You can get a list of digests that you can handle by  
typing "gpg --version".  The "Hash" list is what you can handle.

> I can not upgrade my current version of gnupg

"Algorithm 8" is SHA-256.  Those folks who want a switchover to  
SHA-256, pay attention :)


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