can algorithm preferences be changed?

Werner Koch wk at
Mon Sep 28 11:10:35 CEST 1998

Fabio Coatti <cova at> writes:

> gpg --sign -z 0 --rfc1991 pippo
> pgp gives the following:
> cova:~$ pgpv pippo.gpg
> File "pippo" already exists. Overwrite? [y/N] y
> Opening file "pippo" type binary.
> This signature applies to another message
> None of the signatures were understood; can't check

Don't use --rfc1991 with DSA keys (pgp5/gnupg default key) because
this is mode to emulate some parts of pgp 2 (which is described in


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