EVP_sm4(feed) - phpMan

EVP_sm4_cbc (3ssl)   - EVP SM4 cipher
EVP_sm4_cfb (3ssl)   - EVP SM4 cipher
EVP_sm4_cfb128 (3ssl) - EVP SM4 cipher
EVP_sm4_ctr (3ssl)   - EVP SM4 cipher
EVP_sm4_ecb (3ssl)   - EVP SM4 cipher
EVP_sm4_ofb (3ssl)   - EVP SM4 cipher