git / moonbite-core / src/crypto/hmac_sha256.h · raw

// Copyright (c) 2014-2018 The Bitcoin Core developers// Distributed under the MIT software license, see the accompanying// file COPYING or http://www.opensource.org/licenses/mit-license.php.#ifndef BITCOIN_CRYPTO_HMAC_SHA256_H#define BITCOIN_CRYPTO_HMAC_SHA256_H#include <crypto/sha256.h>#include <stdint.h>#include <stdlib.h>/** A hasher class for HMAC-SHA-256. */class CHMAC_SHA256{private:    CSHA256 outer;    CSHA256 inner;public:    static const size_t OUTPUT_SIZE = 32;    CHMAC_SHA256(const unsigned char* key, size_t keylen);    CHMAC_SHA256& Write(const unsigned char* data, size_t len)    {        inner.Write(data, len);        return *this;    }    void Finalize(unsigned char hash[OUTPUT_SIZE]);};#endif // BITCOIN_CRYPTO_HMAC_SHA256_H