Using GOST ciphers in ESP and IKEv2
draft-smyslov-esp-gost-04
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Valery Smyslov
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2020-10-26
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Network Working Group V. Smyslov
Internet-Draft ELVIS-PLUS
Intended status: Informational October 26, 2020
Expires: April 29, 2021
Using GOST ciphers in ESP and IKEv2
draft-smyslov-esp-gost-04
Abstract
This document defines a set of encryption transforms for use in the
Encapsulating Security Payload (ESP) and in the Internet Key Exchange
version 2 (IKEv2) protocols. The transforms are based on Russian
cryptographic standard algorithms (GOST) in a Multilinear Galois Mode
(MGM).
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on April 29, 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
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Smyslov Expires April 29, 2021 [Page 1]
Internet-Draft GOST ciphers in ESP & IKEv2 October 2020
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 2
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4. Transforms Description . . . . . . . . . . . . . . . . . . . 3
4.1. Tree-based External Re-Keying . . . . . . . . . . . . . . 4
4.2. Initialization Vector Format . . . . . . . . . . . . . . 5
4.3. Nonce Format for MGM . . . . . . . . . . . . . . . . . . 5
4.3.1. MGM Nonce Format for "Kuznyechik" based Transforms . 6
4.3.2. MGM Nonce Format for "Magma" based Transforms . . . . 6
4.4. Keying Material . . . . . . . . . . . . . . . . . . . . . 7
4.5. Integrity Check Value . . . . . . . . . . . . . . . . . . 7
4.6. Plaintext Padding . . . . . . . . . . . . . . . . . . . . 8
4.7. AAD Construction . . . . . . . . . . . . . . . . . . . . 8
4.7.1. ESP AAD . . . . . . . . . . . . . . . . . . . . . . . 8
4.7.2. IKEv2 AAD . . . . . . . . . . . . . . . . . . . . . . 10
4.8. Using Transforms . . . . . . . . . . . . . . . . . . . . 10
5. Security Considerations . . . . . . . . . . . . . . . . . . . 11
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 11
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.1. Normative References . . . . . . . . . . . . . . . . . . 11
7.2. Informative References . . . . . . . . . . . . . . . . . 12
Appendix A. Test Vectors . . . . . . . . . . . . . . . . . . . . 13
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 21
1. Introduction
This document defines four encryption transforms for the
Encapsulating Security Payload (ESP) [RFC4303] and the Internet Key
Exchange version 2 (IKEv2) [RFC7296]. These transforms are based on
two block ciphers from Russian cryptographic standard algorithms
(often called "GOST" algorithms) - "Kuznyechik" [RFC7801] and "Magma"
[RFC8891]. These ciphers are used in Multilinear Galois Mode (MGM)
[I-D.smyshlyaev-mgm] which provides Authenticated Encryption with
Associated Data (AEAD). In addition these transforms use external
re-keying mechanism, described in [RFC8645] to limit a load on a
session key.
2. Requirements Language
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.
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