Hash

Overview

Provides the hashing functionality required for RSA::sign and RSA::verify, but it can also be used as a standalone hasher. Supported algorithms are directly provided by OpenSSL.

Hash

Provides hashing functionality required for sign and verify functions,
but can be also used independently.

tancrypt::hash(dutils::dbuffer& data,hashAlg alg)

• Parameters:
  • dutils::dbuffer& data - Data buffer to hash
  • tancrypt::hashAlg alg - Algorithm to use for the digest.
• Returns:
  • dutils::dbuffer data - Hashed data buffer

Example

#include <iostream>
#include "tancrypt/hash.hpp"

int main()
{
  // Data setup
  dutils::dbuffer payload("Hewwo, I am secret ^.^");

  // Data gets hashed here  
  dutils::dbuffer hashed_payload = tancrypt::hash(payload,tancrypt::hashAlg::SHA256);

  // You can check the results via helper function dutils::hexStr
  std::cout << "Original:" << payload.toStr() << std::endl;
  std::cout << "Original(hex):" << dutils::hexStr(payload) << std::endl;
  std::cout << "Hashed:" << hashed_payload.toStr() << std::endl;
  std::cout << "Hashed(hex):" << dutils::hexStr(hashed_payload) << std::endl;

  return 0;
}

hashAlg

Enum class used as hash type.

enum class tancrypt::hashAlg : int

Available algorithms:

Enum Constant	Hashing algorithm	Digest Size
hashAlg::MDC2	MDC-2	128-bit
hashAlg::MD4	MD4	128-bit
hashAlg::MD5	MD5	128-bit
hashAlg::SHA1	SHA-1	160-bit
hashAlg::RSA_SHA1	RSA-SHA1	160-bit
hashAlg::SHA224	SHA-224	224-bit
hashAlg::SHA256	SHA-256	256-bit
hashAlg::SHA384	SHA-384	384-bit
hashAlg::SHA512	SHA-512	512-bit
hashAlg::SHA512_224	SHA-512-224	1024-bit
hashAlg::SHA512_256	SHA-512-256	1024-bit
hashAlg::SM3	ShangMi 3	512-bit
hashAlg::BLAKE2B512	BLAKE2B-512	1024-bit
hashAlg::BLAKE2S256	BLAKE2S-256	1024-bit