SHA2 compatibility

Jonathan Rockway jrock at
Tue May 30 22:45:11 CEST 2006

> This is a true statement, but not relevant to your question.  I was
> discussing DSA keys, and you're asking about RSA.  You can use any
> hash with RSA that you like.  There are no restrictions in size or
> otherwise.  The only thing you have to worry about is whether your
> recipient can handle that hash or not.

Interestingly, my OpenPGP smartcard (1024-bit RSA key) refuses to sign 
anything that's not 160 bits (i.e. SHA1 and RIPEMD-160 only).  Is there 
any reason for this, or is this a bug?

Jonathan Rockway

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 370 bytes
Desc: OpenPGP digital signature
Url : /pipermail/attachments/20060530/939841d8/signature.pgp

More information about the Gnupg-users mailing list