RFC 3279 (rfc3279) - Page 1 of 27
Algorithms and Identifiers for the Internet X
Alternative Format: Original Text Document
Network Working Group W. Polk
Request for Comments: 3279 NIST
Obsoletes: 2528 R. Housley
Category: Standards Track RSA Laboratories
L. Bassham
NIST
April 2002
Algorithms and Identifiers for the
Internet X.509 Public Key Infrastructure
Certificate and Certificate Revocation List (CRL) Profile
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 specifies algorithm identifiers and ASN.1 encoding
formats for digital signatures and subject public keys used in the
Internet X.509 Public Key Infrastructure (PKI). Digital signatures
are used to sign certificates and certificate revocation list (CRLs).
Certificates include the public key of the named subject.
Table of Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . 2
2 Algorithm Support . . . . . . . . . . . . . . . . . . . . 3
2.1 One-Way Hash Functions . . . . . . . . . . . . . . . . 3
2.1.1 MD2 One-Way Hash Functions . . . . . . . . . . . . . 3
2.1.2 MD5 One-Way Hash Functions . . . . . . . . . . . . . 4
2.1.3 SHA-1 One-Way Hash Functions . . . . . . . . . . . . 4
2.2 Signature Algorithms . . . . . . . . . . . . . . . . . 4
2.2.1 RSA Signature Algorithm . . . . . . . . . . . . . . . 5
2.2.2 DSA Signature Algorithm . . . . . . . . . . . . . . . 6
2.2.3 Elliptic Curve Digital Signature Algorithm . . . . . 7
2.3 Subject Public Key Algorithms . . . . . . . . . . . . . 7
2.3.1 RSA Keys . . . . . . . . . . . . . . . . . . . . . . 8
2.3.2 DSA Signature Keys . . . . . . . . . . . . . . . . . 9
2.3.3 Diffie-Hellman Key Exchange Keys . . . . . . . . . . 10
Polk, et al. Standards Track