Hashes.h

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#pragma once
#include "catapult/types.h"
 
namespace catapult { namespace crypto {
 
    // region free functions
 
    void Ripemd160(const RawBuffer& dataBuffer, Hash160& hash) noexcept;
 
    void Bitcoin160(const RawBuffer& dataBuffer, Hash160& hash) noexcept;
 
    void Sha256Double(const RawBuffer& dataBuffer, Hash256& hash) noexcept;
 
    void Sha3_256(const RawBuffer& dataBuffer, Hash256& hash) noexcept;
 
    void Sha3_512(const RawBuffer& dataBuffer, Hash512& hash) noexcept;
 
    void Keccak_256(const RawBuffer& dataBuffer, Hash256& hash) noexcept;
 
    void Keccak_512(const RawBuffer& dataBuffer, Hash512& hash) noexcept;
 
    // endregion
 
    // region sha3 / keccak builders
 
    struct Sha3ModeTag {};
 
    struct KeccakModeTag {};
 
    template<typename TModeTag, typename THashTag>
    class alignas(32) KeccakBuilder {
    public:
        using OutputType = utils::ByteArray<THashTag::Byte_Size, THashTag>;
 
    public:
        KeccakBuilder();
 
    public:
        void update(const RawBuffer& dataBuffer) noexcept;
 
        void update(std::initializer_list<const RawBuffer> buffers) noexcept;
 
        void final(OutputType& output) noexcept;
 
    private:
        // size below is related to amount of data Keccak needs for its internal state
        uint8_t m_hashContext[256];
    };
 
    using Sha3_256_Builder = KeccakBuilder<Sha3ModeTag, Hash256_tag>;
    extern template class KeccakBuilder<Sha3ModeTag, Hash256_tag>;
 
    using Sha3_512_Builder = KeccakBuilder<Sha3ModeTag, Hash512_tag>;
    extern template class KeccakBuilder<Sha3ModeTag, Hash512_tag>;
 
    using Keccak_256_Builder = KeccakBuilder<KeccakModeTag, Hash256_tag>;
    extern template class KeccakBuilder<KeccakModeTag, Hash256_tag>;
 
    using Keccak_512_Builder = KeccakBuilder<KeccakModeTag, Hash512_tag>;
    extern template class KeccakBuilder<KeccakModeTag, Hash512_tag>;
 
    using GenerationHash_Builder = KeccakBuilder<Sha3ModeTag, GenerationHash_tag>;
    extern template class KeccakBuilder<Sha3ModeTag, GenerationHash_tag>;
 
    // endregion
}}