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ESSCertIDv2 Update for RFC 3161
RFC 5816

Document type: RFC - Proposed Standard (April 2010; No errata)
Updates RFC 3161
Document stream: IETF
Last updated: 2013-03-02
Other versions: plain text, pdf, html

IETF State: WG Document
Consensus: Unknown
Document shepherd: No shepherd assigned

IESG State: RFC 5816 (Proposed Standard)
Responsible AD: Tim Polk
Send notices to: pkix-chairs@tools.ietf.org, draft-ietf-pkix-rfc3161-update@tools.ietf.org

Internet Engineering Task Force (IETF)                      S. Santesson
Request for Comments: 5816                                  3xA Security
Updates: 3161                                                    N. Pope
Category: Standards Track                                         Thales
ISSN: 2070-1721                                               March 2010

                    ESSCertIDv2 Update for RFC 3161

Abstract

   This document updates RFC 3161.  It allows the use of ESSCertIDv2, as
   defined in RFC 5035, to specify the hash of a signer certificate when
   the hash is calculated with a function other than the Secure Hash
   Algorithm (SHA-1).

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc5816.

Copyright Notice

   Copyright (c) 2010 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this

Santesson & Pope             Standards Track                    [Page 1]
RFC 5816             ESSCertIDv2 Update for RFC 3161          March 2010

   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Table of Contents

   1. Introduction ....................................................2
      1.1. Terminology ................................................2
   2. Updates to RFC 3161 .............................................3
      2.1. Changes to Section 2.4.1, Request Format ...................3
      2.2. Changes to Section 2.4.2, Response Format ..................3
           2.2.1. Signature of Time-Stamp Token .......................3
           2.2.2. Verifying the Time-Stamp Token ......................4
   3. Security Considerations .........................................4
   4. References ......................................................5
      4.1. Normative References .......................................5
      4.2. Informative References .....................................5

1.  Introduction

   The time-stamping protocol defined in RFC 3161 [RFC3161] requires
   that the Cryptographic Message Syntax (CMS) SignedData [RFC5652],
   used to apply a digital signature on the time-stamp token, include a
   signed attribute that identifies the signer's certificate.

   This identifier only allows SHA-1 [SHA1] to be used as the hash
   algorithm to generate the identifier value.

   The mechanism used in [RFC3161] employed ESSCertID from RFC 2634
   [ESS].  RFC 5035 [ESSV2] updated ESSCertID with ESSCertIDv2 to allow
   the use of any hash algorithm.

   The changes to RFC 3161 [RFC3161] defined in this document allow
   ESSCertIDv2 to be used to include an identifier of the signing
   certificate as defined in RFC 5035 [ESSV2].

1.1.  Terminology

   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 RFC 2119 [RFC2119].

Santesson & Pope             Standards Track                    [Page 2]

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