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For key_share extension, a KeyShareEntry with SM2 related values MUST be added if the client wants to start a TLSv1.3 key negotiation using SM cipher suites.

For signature_algorithms_cert extension (if presented), 'sm2sig_sm3' MUST be included.

For signature_algorithms extension, 'sm2sig_sm3' MUST be included.

For supported_groups extension, 'curveSM2' MUST be included.

Other requirements on the extensions of ClientHello message are: ClientHelloДЄ TLSv1.3 client is REQUIRED to include the new cipher suites in its 'cipher_suites' array of the ClientHello structure defined in Section 4.1.2 of. Implementations of these new ciphers suites MUST conform to the new requirements.

CHANGE GCM TO ISO UPDATE

The new cipher suites defined in this document update the key exchange information in the Hello messages. Implementations of this document SHOULD confirm this information by themselves. CAs may choose other values rather than the one mentioned above. In practice, the SM2 identifier used in a certificate signature depends on the CA who signs that certificate. Implementations of this document MUST use the following ASCII string value as the SM2 identifier when doing a TLSv1.3 key exchange:Д®xcept if either a client or a server needs to verify the peer's SM2 certificate contained in the Certificate message, the following ASCII string value SHOULD be used as the SM2 identifier according to : SM2 signature algorithm requests an identifier value when generate the signature, as well as when verifying an SM2 signature. Implementations of the cipher suites defined in this document SHOULD conform to what requires, that is to say, the only valid elliptic curve parameter for SM2 signature algorithm (a.k.a curveSM2) is defined as follows: Unlike other elliptic curve based public key algorithm like ECDSA, SM2 cannot select other elliptic curves in practice, but it's allowed to write test cases by using other elliptic curve parameter sets for SM2, take Annex F.14 of as a reference. This curve has the name curveSM2 and IANA is requested to assign a value for it. SM2 signature algorithm uses a fixed elliptic curve parameter set defined in. In general, SM2 is a signature algorithm based on elliptic curves. SM2 Signature SchemeДЄll cipher suites defined in this document use SM2 signature algorithm as the authentication method when doing a TLSv1.3 handshake.

Implementations of this document MUST NOT apply these cipher suites into any TLS protocols that have an older version than 1.3. The only capable version for the new cipher suites defined in this document is TLSv1.3. The SM2 elliptic curve ID used in the Supported Groups extension defined in appendix-B.3.1.4 of :ДЈ. The SM2 signature algorithm and SM3 hash function used in the Signature Algorithm extension defined in appendix-B.3.1.3 of : To accomplish a TLSv1.3 handshake, more objects have been introduced along with the cipher suites as follows. The new cipher suites are listed as follows (or Section 2):Д¬ipherSuite TLS_SM4_GCM_SM3 = This document describes two new cipher suites for the Transport Layer Security (TLS) protocol version 1.3 (a.k.a TLSv1.3, ).

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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. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents () in effect on the date of publication of this document. Copyright NoticeД¬opyright (c) 2019 IETF Trust and the persons identified as the document authors. This Internet-Draft will expire on February 16, 2020. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as 'work in progress.' 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.

The list of current Internet-Drafts is at. Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF).

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This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. This draft specifies a set of cipher suites for the Transport Layer Security (TLS) protocol version 1.3 to support SM cryptographic algorithms. SM Cipher Suites for Transport Layer Security (TLS) Protocol Version 1.3Дraft-yang-tls-tls13-sm-suites-00 Abstract SM Cipher Suites for Transport Layer Security (TLS) Protocol Version 1.3 TLS

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