OpenSSL-SM

The OpenSSL integrated with Chinese national cryptography standard:

• SM2: Elliptic curve cryptography, including signature scheme, encryption and key agreement, use the modified ECDSA module.
• SM3: Hash algorithm with 256-bit digest length, use EVP_sm3()
• SM4: or SMS4, a Feistel-style block cipher with 128-bit key length and 128-bit block size, use EVP_sms4_ecb(), EVP_sms4_cbc(), EVP_sms4_cfb(), EVP_sms4_ofb().