使用OpenSSL_EVP接口完成SHA3和国密SM3散列生成

    unsigned char data[128] = "测试EVP SHA3 国密SM3";
    int data_size = strlen((char*)data);

    //初始化EVP上下文
    auto ctx = EVP_MD_CTX_new();
    /*
    const EVP_MD *EVP_md5(void);
    const EVP_MD *EVP_sha1(void);
const EVP_MD *EVP_sha224(void);
const EVP_MD *EVP_sha256(void);
const EVP_MD *EVP_sha384(void);
const EVP_MD *EVP_sha512(void);
const EVP_MD *EVP_sha512_224(void);
const EVP_MD *EVP_sha512_256(void);
const EVP_MD *EVP_sha3_224(void);
const EVP_MD *EVP_sha3_256(void);
const EVP_MD *EVP_sha3_384(void);
const EVP_MD *EVP_sha3_512(void);
const EVP_MD *EVP_shake128(void);
const EVP_MD *EVP_shake256(void);
const EVP_MD *EVP_sm3(void); //1.1.1 版本开始支持
    */
    auto evp_md = EVP_sha3_512();

    //hash初始化
    EVP_DigestInit_ex(ctx, evp_md, NULL);

    //计算hash值
    EVP_DigestUpdate(ctx, data, data_size);


    //获取结果
    unsigned char out[64] = { 0 };
    unsigned int out_size = 0;
    EVP_DigestFinal_ex(ctx, out, &out_size);

    cout << "SHA3-512:";
    cout << "(" << out_size << ")";
    PrintHex(string(out, out + out_size));

    //清理上下文
    EVP_MD_CTX_free(ctx);

    //掉用EVP简化接口编码 国密SM3
    EVP_Digest(data, data_size, out, &out_size, EVP_sm3(), NULL);

    cout << "国密SM3：";
    cout << "(" << out_size << ")";
    PrintHex(string(out, out + out_size));