The IESG has approved the Internet Draft "The Content-MD5 Header"
<draft-ietf-822ext-md5-02.txt> as a Proposed Standard. This document
is the product of the Internet Message Extensions Working Group. The
IESG contact persons are John Klensin and Erik Huizer.
This memo specifies an optional header field, Content-MD5, for use
with MIME-Conformant messages. This header provides a message
integrity protection (MIC) to detect accidental corruption incurred
in the course of email transport.
Working Group Summary
This optional extension to MIME is based on work originating in the
PEM Working Group and is a straight forward extension to the base
This protocol has not yet been implemented but the basic MIC
mechanisms are well understood and their application to MIME is
believed to be implementable.