monero/src/crypto/hash.c

// Copyright (c) 2014-2019, The Monero Project
// 
// All rights reserved.
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// permitted provided that the following conditions are met:
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// 1. Redistributions of source code must retain the above copyright notice, this list of
//    conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
//    of conditions and the following disclaimer in the documentation and/or other
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers

#include <stddef.h>
#include <stdint.h>
#include <string.h>

#include "hash-ops.h"
#include "keccak.h"

void hash_permutation(union hash_state *state) {
#if BYTE_ORDER == LITTLE_ENDIAN
  keccakf((uint64_t*)state, 24);
#else
  uint64_t le_state[25];
  memcpy_swap64le(le_state, state, 25);
  keccakf(le_state, 24);
  memcpy_swap64le(state, le_state, 25);
#endif
}

void hash_process(union hash_state *state, const uint8_t *buf, size_t count) {
  keccak1600(buf, count, (uint8_t*)state);
}

void cn_fast_hash(const void *data, size_t length, char *hash) {
  union hash_state state;
  hash_process(&state, data, length);
  memcpy(hash, &state, HASH_SIZE);
}