Algorithm Requirements Update to the Internet X.509 Public Key Infrastructure Certificate Request Message Format (CRMF)
draft-ietf-lamps-crmf-update-algs-02
Network Working Group R. Housley
Internet-Draft Vigil Security
Updates: 4211 (if approved) 21 December 2020
Intended status: Standards Track
Expires: 24 June 2021
Algorithm Requirements Update to the Internet X.509 Public Key
Infrastructure Certificate Request Message Format (CRMF)
draft-ietf-lamps-crmf-update-algs-02
Abstract
This document updates the cryptographic algorithm requirements for
the Password-Based Message Authentication Code in the Internet X.509
Public Key Infrastructure Certificate Request Message Format (CRMF)
specified in RFC 4211.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on 24 June 2021.
Copyright Notice
Copyright (c) 2020 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 (https://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.
Housley Expires 24 June 2021 [Page 1]
Internet-Draft CRMF Algorithm Requirements Update December 2020
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 2
3. Password-Based Message Authentication Code . . . . . . . . . 2
3.1. Introduction Paragraph . . . . . . . . . . . . . . . . . 2
3.2. One-Way Function . . . . . . . . . . . . . . . . . . . . 3
3.3. Iteration Count . . . . . . . . . . . . . . . . . . . . . 3
3.4. MAC Algorithm . . . . . . . . . . . . . . . . . . . . . . 4
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 5
5. Security Considerations . . . . . . . . . . . . . . . . . . . 5
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 6
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 6
7.1. Normative References . . . . . . . . . . . . . . . . . . 6
7.2. Informative References . . . . . . . . . . . . . . . . . 7
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 7
1. Introduction
This document updates the cryptographic algorithm requirements for
the Password-Based Message Authentication Code (MAC) in the Internet
X.509 Public Key Infrastructure Certificate Request Message Format
(CRMF) [RFC4211]. The algorithms specified in [RFC4211] were
appropriate in 2005; however, these algorithms are no longer
considered the best choices. This update specifies algorithms that
are more appropriate today.
2. Terminology
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in
BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all
capitals, as shown here.
3. Password-Based Message Authentication Code
Section 4.4 of [RFC4211] specifies a Password-Based MAC that relies
on a one-way function to compute a symmetric key from the password
and a MAC algorithm. This section specifies algorithm requirements
for the one-way function and the MAC algorithm.
3.1. Introduction Paragraph
Add guidance about limiting the use of the password.
OLD:
Housley Expires 24 June 2021 [Page 2]
Internet-Draft CRMF Algorithm Requirements Update December 2020
This MAC algorithm was designed to take a shared secret (a
password) and use it to compute a check value over a piece of
information. The assumption is that, without the password, the
correct check value cannot be computed. The algorithm computes
the one-way function multiple times in order to slow down any
Show full document text