Secure/Multipurpose Internet Mail Extensions Version 3.2 Message Specification
RFC 5751, “Secure/Multipurpose Internet Mail Extensions Version 3.2 Message Specification”, is a Proposed Standard document published in January 2010 by B. Ramsdell, S. Turner. It obsoletes RFC 3851. It has been obsoleted by RFC 8551 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
This document defines Secure/Multipurpose Internet Mail Extensions (S/MIME) version 3.2. S/MIME provides a consistent way to send and receive secure MIME data. Digital signatures provide authentication, message integrity, and non-repudiation with proof of origin. Encryption provides data confidentiality. Compression can be used to reduce data size. This document obsoletes RFC 3851. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 5751 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 5750 Secure/Multipurpose Internet Mail Extensions Version 3.2 Certificate Handling
- RFC 5752 Multiple Signatures in Cryptographic Message Syntax
- RFC 5749 Distribution of EAP-Based Keys for Handover and Re-Authentication
- RFC 5753 Use of Elliptic Curve Cryptography Algorithms in Cryptographic Message Syntax
- RFC 5748 IANA Registry Update for Support of the SEED Cipher Algorithm in Multimedia Internet KEYing
- RFC 5754 Using SHA2 Algorithms with Cryptographic Message Syntax
- RFC 5747 4over6 Transit Solution Using IP Encapsulation and MP-BGP Extensions
- RFC 5755 An Internet Attribute Certificate Profile for Authorization