RFC 3370 (rfc3370) - Page 1 of 24

Cryptographic Message Syntax (CMS) Algorithms

Network Working Group                                         R. Housley
Request for Comments: 3370                              RSA Laboratories
Obsoletes: 2630, 3211                                        August 2002
Category: Standards Track


             Cryptographic Message Syntax (CMS) Algorithms

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2002).  All Rights Reserved.

Abstract

   This document describes the conventions for using several
   cryptographic algorithms with the Cryptographic Message Syntax (CMS).
   The CMS is used to digitally sign, digest, authenticate, or encrypt
   arbitrary message contents.

Table of Contents

   1     Introduction ...............................................  2
   1.1   Changes Since RFC 2630 .....................................  2
   1.2   Terminology ................................................  2
   2     Message Digest Algorithms ..................................  3
   2.1   SHA-1 ......................................................  3
   2.2   MD5 ........................................................  3
   3     Signature Algorithms .......................................  4
   3.1   DSA ........................................................  4
   3.2   RSA ........................................................  5
   4     Key Management Algorithms ..................................  6
   4.1   Key Agreement Algorithms ...................................  6
   4.1.1 X9.42 Ephemeral-Static Diffie-Hellman ......................  7
   4.1.2 X9.42 Static-Static Diffie-Hellman .........................  8
   4.2   Key Transport Algorithms ...................................  9
   4.2.1 RSA (PKCS #1 v1.5) ......................................... 10
   4.3   Symmetric Key-Encryption Key Algorithms .................... 10
   4.3.1 Triple-DES Key Wrap ........................................ 11
   4.3.2 RC2 Key Wrap ............................................... 12
   4.4   Key Derivation Algorithms .................................. 12



Housley                     Standards Track