rfc6979_hmac_sha256.h

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// Copyright (c) 2014 The Bitcoin developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#ifndef PIVX_CRYPTO_RFC6979_HMAC_SHA256_H
#define PIVX_CRYPTO_RFC6979_HMAC_SHA256_H
 
#include "crypto/hmac_sha256.h"
 
#include <stdint.h>
#include <stdlib.h>
 
class RFC6979_HMAC_SHA256
{
private:
    unsigned char V[CHMAC_SHA256::OUTPUT_SIZE];
    unsigned char K[CHMAC_SHA256::OUTPUT_SIZE];
    bool retry;
 
public:
    RFC6979_HMAC_SHA256(const unsigned char* key, size_t keylen, const unsigned char* msg, size_t msglen);
 
    void Generate(unsigned char* output, size_t outputlen);
 
    ~RFC6979_HMAC_SHA256();
};
 
#endif // PIVX_CRYPTO_RFC6979_HMAC_SHA256_H