The Content-MD5-Origin: header

Document Type Expired Internet-Draft (individual)
Author Martin Hamilton 
Last updated 1999-03-02 (latest revision 1998-08-14)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The Content-MD5: header specified in RFC 1864 has not been widely deployed, though this would be highly desirable for a number of reasons. The author conjectures that this lack of usage is due at least in part to the requirement that only originating user agents may add a Content-MD5: header. This proposal updates RFC 1864 to remove that requirement, and defines the header Content-MD5-Origin: for use by relaying hosts to indicate the point at which a Content- MD5: header was added.


Martin Hamilton (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)