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rfc1991: required or not? Was: Re: GPG says bad signature when PGP reports OK



On Thu, Nov 18, 1999 at 07:50:52AM +1100, Brian May wrote:
> > This was a problem for me. I traced it to the rfc1991 option in
> > my ~/.gnupg/options file. After removing this option the signatures are
> > ok again.
> 
> /usr/doc/gpg-rsa/README.Debian.gz implies that it is required.

But it makes the signing fail, demonstration:

pvaneynd@mail 11:36:04 ~/tmp$ gpg --clearsign < t | gpg --verify

You need a passphrase to unlock the secret key for
user: "Peter Van Eynde (Lisper) <pvaneynd@debian.org>"
1024-bit DSA key, ID 4B729625, created 1999-09-09

gpg: Signature made Thu Nov 18 11:36:19 1999 CET using DSA key ID 4B729625
gpg: Good signature from "Peter Van Eynde (Lisper) <pvaneynd@debian.org>"
gpg:                 aka "Peter Van Eynde (At work) <pvaneynd@inthan.be>"
pvaneynd@mail 11:36:19 ~/tmp$ gpg --clearsign --rfc1991 < t | gpg --verify

You need a passphrase to unlock the secret key for
user: "Peter Van Eynde (Lisper) <pvaneynd@debian.org>"
1024-bit DSA key, ID 4B729625, created 1999-09-09

gpg: Signature made Thu Nov 18 11:36:30 1999 CET using DSA key ID 4B729625
gpg: BAD signature from "Peter Van Eynde (Lisper) <pvaneynd@debian.org>"
pvaneynd@mail 11:36:30 ~/tmp$ gpg --clearsign < t | gpg --verify --rfc1991

You need a passphrase to unlock the secret key for
user: "Peter Van Eynde (Lisper) <pvaneynd@debian.org>"
1024-bit DSA key, ID 4B729625, created 1999-09-09

gpg: Signature made Thu Nov 18 11:37:18 1999 CET using DSA key ID 4B729625
gpg: Good signature from "Peter Van Eynde (Lisper) <pvaneynd@debian.org>"
gpg:                 aka "Peter Van Eynde (At work) <pvaneynd@inthan.be>"

So what is up here?

Groetjes, Peter

-- 
It's logic Jim, but not as we know it. | pvaneynd@debian.org for pleasure,
"God, root, what is difference?" - Pitr| pvaneynd@inthan.be for more pleasure!
"God is more forgiving." - Dave Aronson| http://cvs2.cons.org/~pvaneynd


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