Use of the Advanced Encryption Standard (AES) Encryption Algorithm in Cryptographic Message Syntax (CMS) (RFC3565)
Original Publication Date: 2003-Jul-01
Included in the Prior Art Database: 2003-Jul-18
Internet Society Requests For Comment (RFCs)
This document specifies the conventions for using the Advanced Encryption Standard (AES) algorithm for encryption with the Cryptographic Message Syntax (CMS).
Network Working Group J. Schaad
Request for Comments: 3565 Soaring Hawk Consulting
Category: Standards Track July 2003
Use of the Advanced Encryption Standard (AES) Encryption
Algorithm in Cryptographic Message Syntax (CMS)
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 (C) The Internet Society (2003). All Rights Reserved.
This document specifies the conventions for using the Advanced
Encryption Standard (AES) algorithm for encryption with the
Cryptographic Message Syntax (CMS).
Conventions used in this document
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in BCP 14, RFC 2119
This document specifies the conventions for using Advanced Encryption
Standard (AES) content encryption algorithm with the Cryptographic
Message Syntax [CMS] enveloped-data and encrypted-data content types.
CMS values are generated using ASN.1 [X.208-88], using the Basic
Encoding Rules (BER) [X.209-88] and the Distinguished Encoding Rules
Schaad Standards Track [Page 1]
RFC 3565 Use of the AES Encryption Algorithm in CMS July 2003
The Advanced Encryption Standard (AES) [AES] was developed to replace
DES [DES]. The AES Federal Information Processing Standard (FIPS)
Publication specifies a cryptographic algorithm for use by U.S.
Government organizations. However, the AES will also be widely used
by organizations, institutions, and individuals outside of the U.S.
Two researchers who developed and submitted the Rijndael algorithm
for consideration are both cryptographers from Belgium: Dr. Joan
Daemen of Proton World International and Dr. Vincent Rijmen, a
postdoctoral researcher in the Electrical Engineering Department of
Katholieke Universiteit Leuven.
The National Institute of Standards and technology (NIST) selected
the Rijndael algorithm for AES because it offers a combination of
security, performance, efficiency, ease of implementation, and
flexibility. Specifically, Rijndael appears to be consistently a
very good performer in both hardware and software across a wi...