S/MIME Version 4.0 Message Specification

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S/MIME Version 4.0 Message Specification

ISSN: 2070-1721 S. Turner
sn3rd
April 2019

Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0
Message Specification

Abstract

This document defines Secure/Multipurpose Internet Mail Extensions
(S/MIME) version 4.0. Standards Track [Page 1]

RFC 8551 S/MIME 4.0 Message Specification April 2019

Copyright Notice

Copyright (c) 2019 IETF Trust and the persons identified as the
document authors. Based on the
popular Internet MIME standard, S/MIME provides the following
cryptographic security services for electronic messaging
applications: authentication, message integrity, and non-repudiation
of origin (using digital signatures), and data confidentiality (using
encryption).

Source: tools.ietf.org