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34 lines
821 B
34 lines
821 B
// Copyright (c) 2014-2017 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_SHA256_H |
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#define BITCOIN_CRYPTO_SHA256_H |
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#include <stdint.h> |
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#include <stdlib.h> |
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#include <string> |
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/** A hasher class for SHA-256. */ |
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class CSHA256 |
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{ |
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private: |
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uint32_t s[8]; |
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unsigned char buf[64]; |
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uint64_t bytes; |
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public: |
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static const size_t OUTPUT_SIZE = 32; |
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CSHA256(); |
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CSHA256& Write(const unsigned char* data, size_t len); |
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void Finalize(unsigned char hash[OUTPUT_SIZE]); |
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CSHA256& Reset(); |
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}; |
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/** Autodetect the best available SHA256 implementation. |
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* Returns the name of the implementation. |
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*/ |
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std::string SHA256AutoDetect(); |
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#endif // BITCOIN_CRYPTO_SHA256_H
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