SHA2 digest on gpg smartcard

Laurent Bigonville l.bigonville at
Wed Feb 24 18:26:46 CET 2010

Hi (again),

nobody knows? :(

Laurent Bigonville

Le Wed, 17 Feb 2010 18:46:02 +0100,
Laurent Bigonville <l.bigonville at> a écrit :

> Hi,
> I've have a OpenGPG smartcard version 2.0 and I would generate digests
> stronger than SHA1.
> I've added "personal-digest-preferences SHA256" to my gpg.conf file,
> but when I sign a message the headers still uses SHA1. If I force with
> --digest-algo (which is not recommended according to the doc) to
> SHA256 it works and I'm able to verify the signature.
> I've opened a bug[1], but I was told that it was not a bug.
> Then could someone enlighten me about the reasons of this?
> Cheers
> Laurent Bigonville
> [1]

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