Re: Encrypting RFC822 headers in S/MIME or PGP/MIME messages

Ian,

From: Ian Bell <ianbell(_at_)turnpike(_dot_)com>
Subject: Encrypting RFC822 headers in S/MIME or PGP/MIME messages
Date: Thu, 17 Sep 1998 11:02:49 +0100

> Could (and should) any replacements for RFC2015 and RFC2311 be amended
> to allow RFC822 headers to be sent encrypted, and for the decryption
> process to swap any encrypted headers found with the corresponding
> headers in the actual message?
To my best knowledge, there is a non-official scheme to do this. Here
is an example:

X-PGP-Sig: 2.6.3ia Subject,From,X-Mailer
        iQCVAwUBM84wngE7m572a9utAQETEgQAwcL38QVdZbkHuW4Mblmje17deuI85R1j
        4yGiDlb1enRDSUyGiLCmk8YphNDiLdKKlMV3Z0opzREUW9Q+sb8fr5s1QXMJhvXs
        7hi7s4+V00rjgbqbqXVNiajKiKfVxd7JTRfe0UIZuOljnURP1ZCMlSRD1rDoCEAg
        1vunQv6QYj4=
        =hvn0

This is a header field to be stored in a header, mixed with fields to
be proteced such as Subject, From, and X-Mailer.

If you are interested, I will ack the author to explain his
experiences.

--Kazu