ietf-openpgp
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Re: PGP Keyserver Synchronization Protocol

1999-07-02 04:10:53
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Hi!

On Fri, 2 Jul 1999, Marcel Waldvogel wrote:

Both strategies, either keeping the first (revocation) signature or
updating them, is open to DoS. I would prefer the keyservers to keep
(and return) all duplicate (revocation) signatures, but only display
one of them. Then the user's OpenPGP implementation should deal with
it. Duplicate signatures shouldn't break anything, but I would like
to know whether anyone assumes that duplicate revocations might break
something?

I do not think they break something. OpenPGP implementation should handle
multiple signatures with similar meaning. 

If there are implementations which have different behaviour according to
the additional information of the signature, they can have problems.
Such additional informations are the creation time of the signature (an
implementation could treat signatures valid if they occured befor the
revocation of the key) or the reason for the revocation (if the reason is
a changed userID the OpenPGP implementation could take signatures for 
valid, but not if the reason is a compromised key).

IMHO the keyservers should store all key information and not try to guess
what part of this information an application needs to work. 


Cheers,
Patrick

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