Cc: jueneman%wotan(_at_)gte(_dot_)com, pem-dev(_at_)tis(_dot_)com
Date: Fri, 29 Oct 93 11:28:41 -0400
From: Stephen D Crocker <crocker(_at_)tis(_dot_)com>
...
As has been pointed out, usually only some of the header fields will
be available at the time of encapsulation, so the protected headers
may be To:, Cc: and Subject:, but the From: and Date: fields may not
be included. Of course, the identity of the signer will be known via
his/her dname.
Many mail relay agents in the Internet today rewrite header lines to
reflect the word view of the recipient (i.e., my mail agent may have
included a header that just read "jis" and some MTA in between me and
you re-writes it to read "jis(_at_)mit(_dot_)edu").
I take it that with your proposed implementation such header re-writing
will invalidate the message's signature. Correct?
-Jeff