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jakcron
57 lines
1.0 KiB
C++
57 lines
1.0 KiB
C++
/**
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* @file Sha2Impl.h
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* @brief Declaration of tc::crypto::detail::Sha2Impl
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* @author Jack (jakcron)
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* @version 0.1
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* @date 2022/02/27
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**/
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#pragma once
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#include <tc/types.h>
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#include <tc/crypto/CryptoException.h>
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namespace tc { namespace crypto { namespace detail {
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/**
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* @class Sha2Impl
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* @brief This class implements the SHA2 family of hash algorithms.
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*/
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class Sha2Impl
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{
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public:
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enum SHA2BitSize
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{
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SHA2BitSize_256 = 256,
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SHA2BitSize_512 = 512
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};
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static const size_t kSha2_256_HashSize = 32;
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static const size_t kSha2_256_BlockSize = 64;
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static const size_t kSha2_512_HashSize = 64;
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static const size_t kSha2_512_BlockSize = 128;
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Sha2Impl(SHA2BitSize algo = SHA2BitSize_256);
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~Sha2Impl();
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void initialize();
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void update(const byte_t* data, size_t data_size);
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void getHash(byte_t* hash);
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private:
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enum class State
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{
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None,
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Initialized,
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Done
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};
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State mState;
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size_t mHashSize;
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std::array<byte_t, kSha2_512_HashSize> mHash;
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struct ImplCtx;
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std::unique_ptr<ImplCtx> mImplCtx;
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};
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}}} // namespace tc::crypto::detail
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