SM Cipher Suites for Transport Layer Security (TLS) Protocol Version 1.3
draft-yang-tls-tls13-sm-suites-00

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TLS                                                              P. Yang
Internet-Draft                                             Ant Financial
Intended status: Informational                           August 15, 2019
Expires: February 16, 2020

SM Cipher Suites for Transport Layer Security (TLS) Protocol Version 1.3
                   draft-yang-tls-tls13-sm-suites-00

Abstract

   This draft specifies a set of cipher suites for the Transport Layer
   Security (TLS) protocol version 1.3 to support SM cryptographic
   algorithms.

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 February 16, 2020.

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   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  The SM Algorithms . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Proposed Cipher Suites  . . . . . . . . . . . . . . . . . . .   3
   3.  Cipher Suites Definitions . . . . . . . . . . . . . . . . . .   4
     3.1.  TLS Versions  . . . . . . . . . . . . . . . . . . . . . .   4
     3.2.  Authentication  . . . . . . . . . . . . . . . . . . . . .   4
       3.2.1.  SM2 Signature Scheme  . . . . . . . . . . . . . . . .   4
     3.3.  Key Exchange  . . . . . . . . . . . . . . . . . . . . . .   5
       3.3.1.  Hello Messages  . . . . . . . . . . . . . . . . . . .   5
       3.3.2.  CertificateRequest  . . . . . . . . . . . . . . . . .   6
       3.3.3.  Certificate . . . . . . . . . . . . . . . . . . . . .   6
       3.3.4.  CertificateVerify . . . . . . . . . . . . . . . . . .   6
     3.4.  Key Scheduling  . . . . . . . . . . . . . . . . . . . . .   7
     3.5.  Cipher  . . . . . . . . . . . . . . . . . . . . . . . . .   7
       3.5.1.  AEAD_SM4_GCM  . . . . . . . . . . . . . . . . . . . .   7
       3.5.2.  AEAD_SM4_CCM  . . . . . . . . . . . . . . . . . . . .   8
     3.6.  Hash  . . . . . . . . . . . . . . . . . . . . . . . . . .   8
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     6.2.  Informative References  . . . . . . . . . . . . . . . . .  10
   Appendix A.  Contributors . . . . . . . . . . . . . . . . . . . .  11
   Appendix B.  Acknowledgments  . . . . . . . . . . . . . . . . . .  11
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   This document describes two new cipher suites for the Transport Layer
   Security (TLS) protocol version 1.3 (a.k.a TLSv1.3, [RFC8446]).  The
   new cipher suites are listed as follows (or Section 2):

      CipherSuite TLS_SM4_GCM_SM3 = {TBD1, TBD1};
      CipherSuite TLS_SM4_CCM_SM3 = {TBD2, TBD2};

   These new cipher suites contains several SM cryptographic algorithms
   that provide both authentication and confidentiality.  For the more
   detailed introduction to SM cryptographic algorithms, please read
   Section 1.1.  These cipher suites follow what TLSv1.3 requires.  For
   instance, all the cipher suites mentioned in this draft use ECDHE as
   the key exchange scheme and use SM4 in either GCM mode or CCM mode to
   meet the need of TLSv1.3 to have an AEAD capable encryption
   algorithm.

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