Problems decrypting a mail with my openpgp card

[zvrba at globalnet.hr]

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On Wed, May 17, 2006 at 10:46:32AM -0400, David Shaw wrote:
> 
> You basically can't, unless you have a copy of your authentication key
> 
Why not? Authentication is the same as encryption with private key which
amounts to decryption of the original content ;) (modulo padding.) I think
that it should be possible to hack some program which would use
authentication key with given prefabricated blob of data, in effect
decrypting what is needed...

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