Header Protection for S/MIME

Document Type Expired Internet-Draft (individual)
Authors Lijun Liao  , Joerg Schwenk 
Last updated 2009-06-30
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


In the current S/MIME Version 3.1 specification, the header protection is achieved by encoding the whole message as a message/rfc822 MIME media. Since this approach poses some practical problems, we propose to use signed attributes to implement a fully backward compatible S/MIME header protection scheme.


Lijun Liao (lijun.liao@nds.rub.de)
Joerg Schwenk (joerg.schwenk@nds.rub.de)

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