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27 lines
674 B
27 lines
674 B
8 years ago
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// Copyright (c) 2017 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_CRYPTO_CHACHA20_H
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#define BITCOIN_CRYPTO_CHACHA20_H
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#include <stdint.h>
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#include <stdlib.h>
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/** A PRNG class for ChaCha20. */
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class ChaCha20
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{
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private:
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uint32_t input[16];
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public:
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ChaCha20();
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ChaCha20(const unsigned char* key, size_t keylen);
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void SetKey(const unsigned char* key, size_t keylen);
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void SetIV(uint64_t iv);
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void Seek(uint64_t pos);
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void Output(unsigned char* output, size_t bytes);
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};
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#endif // BITCOIN_CRYPTO_CHACHA20_H
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