hkdf_sha256_32.h

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// Copyright (c) 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_HKDF_SHA256_32_H
#define BITCOIN_CRYPTO_HKDF_SHA256_32_H
 
#include <crypto/hmac_sha256.h>
 
#include <cstdint>
#include <cstdlib>
 
class CHKDF_HMAC_SHA256_L32 {
private:
    uint8_t m_prk[32];
    static const size_t OUTPUT_SIZE = 32;
 
public:
    CHKDF_HMAC_SHA256_L32(const uint8_t *ikm, size_t ikmlen,
                          const std::string &salt);
    void Expand32(const std::string &info, uint8_t hash[OUTPUT_SIZE]);
};
 
#endif // BITCOIN_CRYPTO_HKDF_SHA256_32_H