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Re: anonymous mail
> PEM, [...] reveals in the clear who signed the message, outside of
> the encrypted portion. Also [...] to be PEM compliant, you *must*
> always sign your messages.
Perhaps it's time we polished the edges, added a few of the features
that are lacking, and wrote up up an RFC for the PGP message format.
Some features I'd like to see in PGP are:
The ability to send an encrypted message to multiple
recipients without duplicating the entire message. The
most logical way to do this would probably be to encrypt
the random IDEA key once for each recipient.
There needs to be a facility for having multiple signatures
on a single document without making the signers sign each
others signatures. Besides the obvious application of
removing a signature from a document, this would also
facilitate things like petitions where many people could
asynchronously sign a single document, and latter assemble
all the signatures together.
It should be possible (though certainly not mandatory) to
hide the recipient's identity entirely.
The message format needs to allow for alternate forms of
encryption (besides IDEA). Furthermore, the (shared key)
algorithm used to encrypt a message should be hidden in
the RSA encrypted part of the message along with the shared
key. Ideally, a list of algorithms could be given which
would allow the message to be optionally compressed before
being encrypted, or encrypted two or more times with
If I'm confused and the PGP message format already supports some
of these features, please correct me.