chromium/third_party/boringssl/src/crypto/keccak/keccak.c

/* Copyright (c) 2023, Google Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */

#include <openssl/base.h>

#include <assert.h>
#include <stdlib.h>

#include "../internal.h"
#include "./internal.h"


// keccak_f implements the Keccak-1600 permutation as described at
// https://keccak.team/keccak_specs_summary.html. Each lane is represented as a
// 64-bit value and the 5×5 lanes are stored as an array in row-major order.
static void keccak_f(uint64_t state[25]) { … }

static void keccak_init(struct BORINGSSL_keccak_st *ctx,
                        size_t *out_required_out_len,
                        enum boringssl_keccak_config_t config) { … }

void BORINGSSL_keccak(uint8_t *out, size_t out_len, const uint8_t *in,
                      size_t in_len, enum boringssl_keccak_config_t config) { … }

void BORINGSSL_keccak_init(struct BORINGSSL_keccak_st *ctx,
                           enum boringssl_keccak_config_t config) { … }

void BORINGSSL_keccak_absorb(struct BORINGSSL_keccak_st *ctx, const uint8_t *in,
                             size_t in_len) { … }

static void keccak_finalize(struct BORINGSSL_keccak_st *ctx) { … }

void BORINGSSL_keccak_squeeze(struct BORINGSSL_keccak_st *ctx, uint8_t *out,
                              size_t out_len) { … }