[FIXS V1.1 RC2] Add cryptography algorithms SM2, SM3, SM4

[kleihan]

Provided by Li Zhu

SM2 SM3 SM4 cryptography algorithms defined by China are introduced into ISO standards now. Maybe they can be added to FIXS spec? See technical document https://www.rfc-editor.org/rfc/rfc8998.html.

SM2 is an asymmetric cryptography algorithm, defined in ISO/IEC 14888-3：2018，SM4 is a symmetric encryption algorithm defined in ISO/IEC 18033-3：2010。SM3 is a cryptography hash function defined in ISO/IEC 10118-3：2018

How to use them in TLS 1.3 is defined in the document in the above URL