Protected Headers for Cryptographic E-mail

Document Type Expired Internet-Draft (individual)
Authors Bjarni Einarsson  , "juga"  , Daniel Gillmor 
Last updated 2020-06-22 (latest revision 2019-12-20)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes a common strategy to extend the end-to-end cryptographic protections provided by PGP/MIME, etc. to protect message headers in addition to message bodies. In addition to protecting the authenticity and integrity of headers via signatures, it also describes how to preserve the confidentiality of the Subject header.


Bjarni Einarsson (
"juga" (
Daniel Gillmor (

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