Network Working Group W. Hardaker Internet-Draft USC/ISI Intended status: Standards Track W. Kumari Expires: 6 April 2025 Google 3 October 2024 Remove deprecated GOST algorithms from active use within DNSSEC draft-ietf-dnsop-must-not-ecc-gost-01 Abstract This document retires the use of ECC-GOST within DNSSEC. 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 6 April 2025. Copyright Notice Copyright (c) 2024 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 Revised BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Revised BSD License. Hardaker & Kumari Expires 6 April 2025 [Page 1] Internet-Draft MUST NOT DNSSEC with ECC-GOST October 2024 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1. Requirements notation . . . . . . . . . . . . . . . . . . 2 2. Deprecating ECC-GOST algorithms in DNSSEC . . . . . . . . . . 2 3. Security Considerations . . . . . . . . . . . . . . . . . . . 3 4. Operational Considerations . . . . . . . . . . . . . . . . . 3 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3 6. References . . . . . . . . . . . . . . . . . . . . . . . . . 3 6.1. Normative References . . . . . . . . . . . . . . . . . . 3 6.2. Informative References . . . . . . . . . . . . . . . . . 4 Appendix A. Acknowledgments . . . . . . . . . . . . . . . . . . 4 Appendix B. Current algorithm usage levels . . . . . . . . . . . 4 Appendix C. Github Version of this document . . . . . . . . . . 4 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 5 1. Introduction The use of the GOST R 34.10-2001 and GOST R 34.11-94 algorithms with the DNS Security Extensions (DNSSEC) [RFC9364] was documented in [RFC5933]. These two algorithms were deprecated by the Orders of the Federal Agency for Technical Regulation and Metrology of Russia (Rosstandart) in August 2012, and were superseded by GOST 34.10-2012 and GOST 34.11-2012 respectively. The use of GOST 34.10-2012 and GOST 34.11-2012 in DNSSEC is documented in [RFC9558], and so [RFC5933] has been made Historic. Thus, the use of GOST R 34.10-2001 (mnemonic GOST-ECC) and and GOST R 34.11-94 is no longer recommended for use in DNSSEC [RFC9364]. Note that this document does not change or discuss the use of GOST 34.10-2012 and GOST 34.11-2012. 1.1. Requirements notation 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. 2. Deprecating ECC-GOST algorithms in DNSSEC The GOST R 34.11-94 [RFC5933] algorithm MUST NOT be used when creating DS records. Validating resolvers MUST treat GOST R 34.11-94 DS records as insecure. If no other DS records of accepted cryptographic algorithms are available, the DNS records below the delegation point MUST be treated as insecure. Hardaker & Kumari Expires 6 April 2025 [Page 2] Internet-Draft MUST NOT DNSSEC with ECC-GOST October 2024 The ECC-GOST [RFC5933] algorithm MUST NOT be used when creating DNSKEY and RRSIG records. Validating resolvers MUST treat RRSIG records created from DNSKEY records using these algorithms as an unsupported algorithm. If no other RRSIG records of accepted cryptographic algorithms are available, the validating resolver MUST consider the associated resource records as Insecure. 3. Security Considerations This document increases the security of the DNSSEC ecosystem by deprecating algorithms that make use of older algorithms with ECC- GOST derived uses. 4. Operational Considerations Zone owners currently making use of ECC-GOST based algorithms should immediate switch to algorithms with stronger cryptographic strengths. DNS registries [RFC9499] should prohibit their clients to upload and publish ECC-GOST based DS records. 5. IANA Considerations IANA is requested to set the "Use for DNSSEC Signing", "Use for DNSSEC Validation", "Implement for DNSSEC Signing", and "Implement for DNSSEC Validation" columns of the DNS Security Algorithm Numbers registry [DNSKEY-IANA] for ECC-GOST (23) to MUST NOT. Note that previously the "Use for DNSSEC Signing" and "Implement for DNSSEC Delegation" columns were already MUST NOT. IANA is requested to set the "Use for DNSSEC Delegation", "Use for DNSSEC Validation", "Implement for DNSSEC Delegation", and "Implement for DNSSEC Validation" columns of the "Digest Algorithms" registry [DS-IANA] for GOST R 34.11-94 (3) to MUST NOT. Note that previously the "Use for DNSSEC Signing" and "Implement for DNSSEC Delegation" columns were already MUST NOT. 6. References 6.1. Normative References [DNSKEY-IANA] IANA, "Domain Name System Security (DNSSEC) Algorithm Numbers", n.d., . [DS-IANA] IANA, "Delegation Signer (DS) Resource Record (RR) Type Digest Algorithms", n.d., . Hardaker & Kumari Expires 6 April 2025 [Page 3] Internet-Draft MUST NOT DNSSEC with ECC-GOST October 2024 [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, . [RFC5933] Dolmatov, V., Ed., Chuprina, A., and I. Ustinov, "Use of GOST Signature Algorithms in DNSKEY and RRSIG Resource Records for DNSSEC", RFC 5933, DOI 10.17487/RFC5933, July 2010, . [RFC9364] Hoffman, P., "DNS Security Extensions (DNSSEC)", BCP 237, RFC 9364, DOI 10.17487/RFC9364, February 2023, . 6.2. Informative References [RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, May 2017, . [RFC9499] Hoffman, P. and K. Fujiwara, "DNS Terminology", BCP 219, RFC 9499, DOI 10.17487/RFC9499, March 2024, . [RFC9558] Makarenko, B. and V. Dolmatov, Ed., "Use of GOST 2012 Signature Algorithms in DNSKEY and RRSIG Resource Records for DNSSEC", RFC 9558, DOI 10.17487/RFC9558, April 2024, . Appendix A. Acknowledgments The authors appreciate the comments and suggestions from the following IETF participants in helping produce this document: Mark Andrews, Brian Dickson, Paul Wouters and the many members of the DNSOP working group that discussed this draft. Appendix B. Current algorithm usage levels The DNSSEC scanning project by Viktor Dukhovni and Wes Hardaker highlights the current deployment of various algorithms on the https://stats.dnssec-tools.org/ website. Appendix C. Github Version of this document While this document is under development, it can be viewed, tracked, fill here: Hardaker & Kumari Expires 6 April 2025 [Page 4] Internet-Draft MUST NOT DNSSEC with ECC-GOST October 2024 https://github.com/hardaker/draft-hardaker-dnsop-must-not-gost Authors' Addresses Wes Hardaker USC/ISI Email: ietf@hardakers.net Warren Kumari Google Email: warren@kumari.net Hardaker & Kumari Expires 6 April 2025 [Page 5]