[ Perry, hit "delete" now... ] Here are a couple of more internet drafts relevant to secure email. ftp://ds.internic.net/internet-drafts/<filename> Title : Security Multiparts for MIME: Multipart/Signed and Multipart/Encrypted Author(s) : J. Galvin, S. Murphy, S. Crocker, N. Freed Filename : draft-ietf-pem-sigenc-02.txt Pages : 10 Date : 11/23/1994 This document defines two new content types for specifying the application of security services to MIME message bodies. MIME, an acronym for "Multipurpose Internet Mail Extensions", defines the format of the contents of Internet mail messages and provides for multi-part textual and non-textual message bodies. The new content types are subtypes of multipart: signed and encrypted. Each will contain two body parts: one for the protected data and one for the control information necessary to remove the protection. The type and contents of the control information body parts are determined by the value of the protocol parameter of the enclosing multipart/signed or multipart/encrypted content type, which is required to be present. Title : PEM Security Services and MIME Author(s) : S. Crocker, N. Freed, J. Galvin, S. Murphy Filename : draft-ietf-pem-mime-07.txt Pages : 34 Date : 11/23/1994 This document specifies how the services of MIME and PEM can be used in a complementary fashion. MIME, an acronym for "Multipurpose Internet Mail Extensions", defines the format of the contents of Internet mail messages and provides for multi-part textual and non-textual message bodies. PEM, an acronym for "Privacy Enhanced Mail", provides message authentication/integrity and message encryption services for Internet mail messages.