Hush Full Node software. We were censored from Github, this is where all development happens now.
https://hush.is
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42 lines
1.1 KiB
42 lines
1.1 KiB
// Copyright (c) 2020 The Bitcoin Core developers
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// Copyright (c) 2016-2024 The Hush developers
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// Distributed under the GPLv3 software license, see the accompanying
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// file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
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#ifndef HUSH_CRYPTO_SHA3_H
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#define HUSH_CRYPTO_SHA3_H
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#include "span.h"
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#include <stdint.h>
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#include <stdlib.h>
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//! The Keccak-f[1600] transform.
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void KeccakF(uint64_t (&st)[25]);
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class SHA3_256_
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{
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private:
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uint64_t m_state[25] = {0};
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unsigned char m_buffer[8];
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unsigned m_bufsize = 0;
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unsigned m_pos = 0;
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//! Sponge rate in bits.
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static constexpr unsigned RATE_BITS = 1088;
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//! Sponge rate expressed as a multiple of the buffer size.
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static constexpr unsigned RATE_BUFFERS = RATE_BITS / (8 * sizeof(m_buffer));
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static_assert(RATE_BITS % (8 * sizeof(m_buffer)) == 0, "Rate must be a multiple of 8 bytes");
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public:
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static constexpr size_t OUTPUT_SIZE = 32;
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SHA3_256_() {}
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SHA3_256_& Write(Span<const unsigned char> data);
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SHA3_256_& Finalize(Span<unsigned char> output);
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SHA3_256_& Reset();
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};
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#endif // HUSH_CRYPTO_SHA3_H
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