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/* MIT License
*
* Copyright (c) 2016-2022 INRIA, CMU and Microsoft Corporation
* Copyright (c) 2022-2023 HACL* Contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "internal/Hacl_Hash_SHA3.h"
static uint32_t
block_len(Spec_Hash_Definitions_hash_alg a)
{
switch (a) {
case Spec_Hash_Definitions_SHA3_224: {
return (uint32_t)144U;
}
case Spec_Hash_Definitions_SHA3_256: {
return (uint32_t)136U;
}
case Spec_Hash_Definitions_SHA3_384: {
return (uint32_t)104U;
}
case Spec_Hash_Definitions_SHA3_512: {
return (uint32_t)72U;
}
case Spec_Hash_Definitions_Shake128: {
return (uint32_t)168U;
}
case Spec_Hash_Definitions_Shake256: {
return (uint32_t)136U;
}
default: {
KRML_HOST_EPRINTF("KaRaMeL incomplete match at %s:%d\n", __FILE__, __LINE__);
KRML_HOST_EXIT(253U);
}
}
}
static uint32_t
hash_len(Spec_Hash_Definitions_hash_alg a)
{
switch (a) {
case Spec_Hash_Definitions_SHA3_224: {
return (uint32_t)28U;
}
case Spec_Hash_Definitions_SHA3_256: {
return (uint32_t)32U;
}
case Spec_Hash_Definitions_SHA3_384: {
return (uint32_t)48U;
}
case Spec_Hash_Definitions_SHA3_512: {
return (uint32_t)64U;
}
default: {
KRML_HOST_EPRINTF("KaRaMeL incomplete match at %s:%d\n", __FILE__, __LINE__);
KRML_HOST_EXIT(253U);
}
}
}
void
Hacl_Hash_SHA3_update_multi_sha3(
Spec_Hash_Definitions_hash_alg a,
uint64_t *s,
uint8_t *blocks,
uint32_t n_blocks)
{
for (uint32_t i = (uint32_t)0U; i < n_blocks; i++) {
uint8_t *block = blocks + i * block_len(a);
Hacl_Impl_SHA3_absorb_inner(block_len(a), block, s);
}
}
void
Hacl_Hash_SHA3_update_last_sha3(
Spec_Hash_Definitions_hash_alg a,
uint64_t *s,
uint8_t *input,
uint32_t input_len)
{
uint8_t suffix;
if (a == Spec_Hash_Definitions_Shake128 || a == Spec_Hash_Definitions_Shake256) {
suffix = (uint8_t)0x1fU;
} else {
suffix = (uint8_t)0x06U;
}
uint32_t len = block_len(a);
if (input_len == len) {
Hacl_Impl_SHA3_absorb_inner(len, input, s);
uint8_t lastBlock_[200U] = { 0U };
uint8_t *lastBlock = lastBlock_;
memcpy(lastBlock, input + input_len, (uint32_t)0U * sizeof(uint8_t));
lastBlock[0U] = suffix;
Hacl_Impl_SHA3_loadState(len, lastBlock, s);
if (!((suffix & (uint8_t)0x80U) == (uint8_t)0U) && (uint32_t)0U == len - (uint32_t)1U) {
Hacl_Impl_SHA3_state_permute(s);
}
uint8_t nextBlock_[200U] = { 0U };
uint8_t *nextBlock = nextBlock_;
nextBlock[len - (uint32_t)1U] = (uint8_t)0x80U;
Hacl_Impl_SHA3_loadState(len, nextBlock, s);
Hacl_Impl_SHA3_state_permute(s);
return;
}
uint8_t lastBlock_[200U] = { 0U };
uint8_t *lastBlock = lastBlock_;
memcpy(lastBlock, input, input_len * sizeof(uint8_t));
lastBlock[input_len] = suffix;
Hacl_Impl_SHA3_loadState(len, lastBlock, s);
if (!((suffix & (uint8_t)0x80U) == (uint8_t)0U) && input_len == len - (uint32_t)1U) {
Hacl_Impl_SHA3_state_permute(s);
}
uint8_t nextBlock_[200U] = { 0U };
uint8_t *nextBlock = nextBlock_;
nextBlock[len - (uint32_t)1U] = (uint8_t)0x80U;
Hacl_Impl_SHA3_loadState(len, nextBlock, s);
Hacl_Impl_SHA3_state_permute(s);
}
typedef struct hash_buf2_s {
Hacl_Streaming_Keccak_hash_buf fst;
Hacl_Streaming_Keccak_hash_buf snd;
} hash_buf2;
Spec_Hash_Definitions_hash_alg
Hacl_Streaming_Keccak_get_alg(Hacl_Streaming_Keccak_state *s)
{
Hacl_Streaming_Keccak_hash_buf block_state = (*s).block_state;
return block_state.fst;
}
Hacl_Streaming_Keccak_state *
Hacl_Streaming_Keccak_malloc(Spec_Hash_Definitions_hash_alg a)
{
KRML_CHECK_SIZE(sizeof(uint8_t), block_len(a));
uint8_t *buf0 = (uint8_t *)KRML_HOST_CALLOC(block_len(a), sizeof(uint8_t));
uint64_t *buf = (uint64_t *)KRML_HOST_CALLOC((uint32_t)25U, sizeof(uint64_t));
Hacl_Streaming_Keccak_hash_buf block_state = { .fst = a, .snd = buf };
Hacl_Streaming_Keccak_state
s = { .block_state = block_state, .buf = buf0, .total_len = (uint64_t)(uint32_t)0U };
Hacl_Streaming_Keccak_state
*p = (Hacl_Streaming_Keccak_state *)KRML_HOST_MALLOC(sizeof(Hacl_Streaming_Keccak_state));
p[0U] = s;
uint64_t *s1 = block_state.snd;
memset(s1, 0U, (uint32_t)25U * sizeof(uint64_t));
return p;
}
void
Hacl_Streaming_Keccak_free(Hacl_Streaming_Keccak_state *s)
{
Hacl_Streaming_Keccak_state scrut = *s;
uint8_t *buf = scrut.buf;
Hacl_Streaming_Keccak_hash_buf block_state = scrut.block_state;
uint64_t *s1 = block_state.snd;
KRML_HOST_FREE(s1);
KRML_HOST_FREE(buf);
KRML_HOST_FREE(s);
}
Hacl_Streaming_Keccak_state *
Hacl_Streaming_Keccak_copy(Hacl_Streaming_Keccak_state *s0)
{
Hacl_Streaming_Keccak_state scrut0 = *s0;
Hacl_Streaming_Keccak_hash_buf block_state0 = scrut0.block_state;
uint8_t *buf0 = scrut0.buf;
uint64_t total_len0 = scrut0.total_len;
Spec_Hash_Definitions_hash_alg i = block_state0.fst;
KRML_CHECK_SIZE(sizeof(uint8_t), block_len(i));
uint8_t *buf1 = (uint8_t *)KRML_HOST_CALLOC(block_len(i), sizeof(uint8_t));
memcpy(buf1, buf0, block_len(i) * sizeof(uint8_t));
uint64_t *buf = (uint64_t *)KRML_HOST_CALLOC((uint32_t)25U, sizeof(uint64_t));
Hacl_Streaming_Keccak_hash_buf block_state = { .fst = i, .snd = buf };
hash_buf2 scrut = { .fst = block_state0, .snd = block_state };
uint64_t *s_dst = scrut.snd.snd;
uint64_t *s_src = scrut.fst.snd;
memcpy(s_dst, s_src, (uint32_t)25U * sizeof(uint64_t));
Hacl_Streaming_Keccak_state
s = { .block_state = block_state, .buf = buf1, .total_len = total_len0 };
Hacl_Streaming_Keccak_state
*p = (Hacl_Streaming_Keccak_state *)KRML_HOST_MALLOC(sizeof(Hacl_Streaming_Keccak_state));
p[0U] = s;
return p;
}
void
Hacl_Streaming_Keccak_reset(Hacl_Streaming_Keccak_state *s)
{
Hacl_Streaming_Keccak_state scrut = *s;
uint8_t *buf = scrut.buf;
Hacl_Streaming_Keccak_hash_buf block_state = scrut.block_state;
Spec_Hash_Definitions_hash_alg i = block_state.fst;
KRML_HOST_IGNORE(i);
uint64_t *s1 = block_state.snd;
memset(s1, 0U, (uint32_t)25U * sizeof(uint64_t));
Hacl_Streaming_Keccak_state
tmp = { .block_state = block_state, .buf = buf, .total_len = (uint64_t)(uint32_t)0U };
s[0U] = tmp;
}
Hacl_Streaming_Types_error_code
Hacl_Streaming_Keccak_update(Hacl_Streaming_Keccak_state *p, uint8_t *data, uint32_t len)
{
Hacl_Streaming_Keccak_state s = *p;
Hacl_Streaming_Keccak_hash_buf block_state = s.block_state;
uint64_t total_len = s.total_len;
Spec_Hash_Definitions_hash_alg i = block_state.fst;
if ((uint64_t)len > (uint64_t)0xFFFFFFFFFFFFFFFFU - total_len) {
return Hacl_Streaming_Types_MaximumLengthExceeded;
}
uint32_t sz;
if (total_len % (uint64_t)block_len(i) == (uint64_t)0U && total_len > (uint64_t)0U) {
sz = block_len(i);
} else {
sz = (uint32_t)(total_len % (uint64_t)block_len(i));
}
if (len <= block_len(i) - sz) {
Hacl_Streaming_Keccak_state s1 = *p;
Hacl_Streaming_Keccak_hash_buf block_state1 = s1.block_state;
uint8_t *buf = s1.buf;
uint64_t total_len1 = s1.total_len;
uint32_t sz1;
if (total_len1 % (uint64_t)block_len(i) == (uint64_t)0U && total_len1 > (uint64_t)0U) {
sz1 = block_len(i);
} else {
sz1 = (uint32_t)(total_len1 % (uint64_t)block_len(i));
}
uint8_t *buf2 = buf + sz1;
memcpy(buf2, data, len * sizeof(uint8_t));
uint64_t total_len2 = total_len1 + (uint64_t)len;
*p =
((Hacl_Streaming_Keccak_state){
.block_state = block_state1,
.buf = buf,
.total_len = total_len2 });
} else if (sz == (uint32_t)0U) {
Hacl_Streaming_Keccak_state s1 = *p;
Hacl_Streaming_Keccak_hash_buf block_state1 = s1.block_state;
uint8_t *buf = s1.buf;
uint64_t total_len1 = s1.total_len;
uint32_t sz1;
if (total_len1 % (uint64_t)block_len(i) == (uint64_t)0U && total_len1 > (uint64_t)0U) {
sz1 = block_len(i);
} else {
sz1 = (uint32_t)(total_len1 % (uint64_t)block_len(i));
}
if (!(sz1 == (uint32_t)0U)) {
Spec_Hash_Definitions_hash_alg a1 = block_state1.fst;
uint64_t *s2 = block_state1.snd;
Hacl_Hash_SHA3_update_multi_sha3(a1, s2, buf, block_len(i) / block_len(a1));
}
uint32_t ite;
if ((uint64_t)len % (uint64_t)block_len(i) == (uint64_t)0U && (uint64_t)len > (uint64_t)0U) {
ite = block_len(i);
} else {
ite = (uint32_t)((uint64_t)len % (uint64_t)block_len(i));
}
uint32_t n_blocks = (len - ite) / block_len(i);
uint32_t data1_len = n_blocks * block_len(i);
uint32_t data2_len = len - data1_len;
uint8_t *data1 = data;
uint8_t *data2 = data + data1_len;
Spec_Hash_Definitions_hash_alg a1 = block_state1.fst;
uint64_t *s2 = block_state1.snd;
Hacl_Hash_SHA3_update_multi_sha3(a1, s2, data1, data1_len / block_len(a1));
uint8_t *dst = buf;
memcpy(dst, data2, data2_len * sizeof(uint8_t));
*p =
((Hacl_Streaming_Keccak_state){
.block_state = block_state1,
.buf = buf,
.total_len = total_len1 + (uint64_t)len });
} else {
uint32_t diff = block_len(i) - sz;
uint8_t *data1 = data;
uint8_t *data2 = data + diff;
Hacl_Streaming_Keccak_state s1 = *p;
Hacl_Streaming_Keccak_hash_buf block_state10 = s1.block_state;
uint8_t *buf0 = s1.buf;
uint64_t total_len10 = s1.total_len;
uint32_t sz10;
if (total_len10 % (uint64_t)block_len(i) == (uint64_t)0U && total_len10 > (uint64_t)0U) {
sz10 = block_len(i);
} else {
sz10 = (uint32_t)(total_len10 % (uint64_t)block_len(i));
}
uint8_t *buf2 = buf0 + sz10;
memcpy(buf2, data1, diff * sizeof(uint8_t));
uint64_t total_len2 = total_len10 + (uint64_t)diff;
*p =
((Hacl_Streaming_Keccak_state){
.block_state = block_state10,
.buf = buf0,
.total_len = total_len2 });
Hacl_Streaming_Keccak_state s10 = *p;
Hacl_Streaming_Keccak_hash_buf block_state1 = s10.block_state;
uint8_t *buf = s10.buf;
uint64_t total_len1 = s10.total_len;
uint32_t sz1;
if (total_len1 % (uint64_t)block_len(i) == (uint64_t)0U && total_len1 > (uint64_t)0U) {
sz1 = block_len(i);
} else {
sz1 = (uint32_t)(total_len1 % (uint64_t)block_len(i));
}
if (!(sz1 == (uint32_t)0U)) {
Spec_Hash_Definitions_hash_alg a1 = block_state1.fst;
uint64_t *s2 = block_state1.snd;
Hacl_Hash_SHA3_update_multi_sha3(a1, s2, buf, block_len(i) / block_len(a1));
}
uint32_t ite;
if (
(uint64_t)(len - diff) % (uint64_t)block_len(i) == (uint64_t)0U && (uint64_t)(len - diff) > (uint64_t)0U) {
ite = block_len(i);
} else {
ite = (uint32_t)((uint64_t)(len - diff) % (uint64_t)block_len(i));
}
uint32_t n_blocks = (len - diff - ite) / block_len(i);
uint32_t data1_len = n_blocks * block_len(i);
uint32_t data2_len = len - diff - data1_len;
uint8_t *data11 = data2;
uint8_t *data21 = data2 + data1_len;
Spec_Hash_Definitions_hash_alg a1 = block_state1.fst;
uint64_t *s2 = block_state1.snd;
Hacl_Hash_SHA3_update_multi_sha3(a1, s2, data11, data1_len / block_len(a1));
uint8_t *dst = buf;
memcpy(dst, data21, data2_len * sizeof(uint8_t));
*p =
((Hacl_Streaming_Keccak_state){
.block_state = block_state1,
.buf = buf,
.total_len = total_len1 + (uint64_t)(len - diff) });
}
return Hacl_Streaming_Types_Success;
}
static void
finish_(
Spec_Hash_Definitions_hash_alg a,
Hacl_Streaming_Keccak_state *p,
uint8_t *dst,
uint32_t l)
{
Hacl_Streaming_Keccak_state scrut0 = *p;
Hacl_Streaming_Keccak_hash_buf block_state = scrut0.block_state;
uint8_t *buf_ = scrut0.buf;
uint64_t total_len = scrut0.total_len;
uint32_t r;
if (total_len % (uint64_t)block_len(a) == (uint64_t)0U && total_len > (uint64_t)0U) {
r = block_len(a);
} else {
r = (uint32_t)(total_len % (uint64_t)block_len(a));
}
uint8_t *buf_1 = buf_;
uint64_t buf[25U] = { 0U };
Hacl_Streaming_Keccak_hash_buf tmp_block_state = { .fst = a, .snd = buf };
hash_buf2 scrut = { .fst = block_state, .snd = tmp_block_state };
uint64_t *s_dst = scrut.snd.snd;
uint64_t *s_src = scrut.fst.snd;
memcpy(s_dst, s_src, (uint32_t)25U * sizeof(uint64_t));
uint32_t ite;
if (r % block_len(a) == (uint32_t)0U && r > (uint32_t)0U) {
ite = block_len(a);
} else {
ite = r % block_len(a);
}
uint8_t *buf_last = buf_1 + r - ite;
uint8_t *buf_multi = buf_1;
Spec_Hash_Definitions_hash_alg a1 = tmp_block_state.fst;
uint64_t *s0 = tmp_block_state.snd;
Hacl_Hash_SHA3_update_multi_sha3(a1, s0, buf_multi, (uint32_t)0U / block_len(a1));
Spec_Hash_Definitions_hash_alg a10 = tmp_block_state.fst;
uint64_t *s1 = tmp_block_state.snd;
Hacl_Hash_SHA3_update_last_sha3(a10, s1, buf_last, r);
Spec_Hash_Definitions_hash_alg a11 = tmp_block_state.fst;
uint64_t *s = tmp_block_state.snd;
if (a11 == Spec_Hash_Definitions_Shake128 || a11 == Spec_Hash_Definitions_Shake256) {
Hacl_Impl_SHA3_squeeze(s, block_len(a11), l, dst);
return;
}
Hacl_Impl_SHA3_squeeze(s, block_len(a11), hash_len(a11), dst);
}
Hacl_Streaming_Types_error_code
Hacl_Streaming_Keccak_finish(Hacl_Streaming_Keccak_state *s, uint8_t *dst)
{
Spec_Hash_Definitions_hash_alg a1 = Hacl_Streaming_Keccak_get_alg(s);
if (a1 == Spec_Hash_Definitions_Shake128 || a1 == Spec_Hash_Definitions_Shake256) {
return Hacl_Streaming_Types_InvalidAlgorithm;
}
finish_(a1, s, dst, hash_len(a1));
return Hacl_Streaming_Types_Success;
}
Hacl_Streaming_Types_error_code
Hacl_Streaming_Keccak_squeeze(Hacl_Streaming_Keccak_state *s, uint8_t *dst, uint32_t l)
{
Spec_Hash_Definitions_hash_alg a1 = Hacl_Streaming_Keccak_get_alg(s);
if (!(a1 == Spec_Hash_Definitions_Shake128 || a1 == Spec_Hash_Definitions_Shake256)) {
return Hacl_Streaming_Types_InvalidAlgorithm;
}
if (l == (uint32_t)0U) {
return Hacl_Streaming_Types_InvalidLength;
}
finish_(a1, s, dst, l);
return Hacl_Streaming_Types_Success;
}
uint32_t
Hacl_Streaming_Keccak_block_len(Hacl_Streaming_Keccak_state *s)
{
Spec_Hash_Definitions_hash_alg a1 = Hacl_Streaming_Keccak_get_alg(s);
return block_len(a1);
}
uint32_t
Hacl_Streaming_Keccak_hash_len(Hacl_Streaming_Keccak_state *s)
{
Spec_Hash_Definitions_hash_alg a1 = Hacl_Streaming_Keccak_get_alg(s);
return hash_len(a1);
}
bool
Hacl_Streaming_Keccak_is_shake(Hacl_Streaming_Keccak_state *s)
{
Spec_Hash_Definitions_hash_alg uu____0 = Hacl_Streaming_Keccak_get_alg(s);
return uu____0 == Spec_Hash_Definitions_Shake128 || uu____0 == Spec_Hash_Definitions_Shake256;
}
void
Hacl_SHA3_shake128_hacl(
uint32_t inputByteLen,
uint8_t *input,
uint32_t outputByteLen,
uint8_t *output)
{
Hacl_Impl_SHA3_keccak((uint32_t)1344U,
(uint32_t)256U,
inputByteLen,
input,
(uint8_t)0x1FU,
outputByteLen,
output);
}
void
Hacl_SHA3_shake256_hacl(
uint32_t inputByteLen,
uint8_t *input,
uint32_t outputByteLen,
uint8_t *output)
{
Hacl_Impl_SHA3_keccak((uint32_t)1088U,
(uint32_t)512U,
inputByteLen,
input,
(uint8_t)0x1FU,
outputByteLen,
output);
}
void
Hacl_SHA3_sha3_224(uint32_t inputByteLen, uint8_t *input, uint8_t *output)
{
Hacl_Impl_SHA3_keccak((uint32_t)1152U,
(uint32_t)448U,
inputByteLen,
input,
(uint8_t)0x06U,
(uint32_t)28U,
output);
}
void
Hacl_SHA3_sha3_256(uint32_t inputByteLen, uint8_t *input, uint8_t *output)
{
Hacl_Impl_SHA3_keccak((uint32_t)1088U,
(uint32_t)512U,
inputByteLen,
input,
(uint8_t)0x06U,
(uint32_t)32U,
output);
}
void
Hacl_SHA3_sha3_384(uint32_t inputByteLen, uint8_t *input, uint8_t *output)
{
Hacl_Impl_SHA3_keccak((uint32_t)832U,
(uint32_t)768U,
inputByteLen,
input,
(uint8_t)0x06U,
(uint32_t)48U,
output);
}
void
Hacl_SHA3_sha3_512(uint32_t inputByteLen, uint8_t *input, uint8_t *output)
{
Hacl_Impl_SHA3_keccak((uint32_t)576U,
(uint32_t)1024U,
inputByteLen,
input,
(uint8_t)0x06U,
(uint32_t)64U,
output);
}
static const uint32_t
keccak_rotc[24U] = {
(uint32_t)1U, (uint32_t)3U, (uint32_t)6U, (uint32_t)10U, (uint32_t)15U, (uint32_t)21U,
(uint32_t)28U, (uint32_t)36U, (uint32_t)45U, (uint32_t)55U, (uint32_t)2U, (uint32_t)14U,
(uint32_t)27U, (uint32_t)41U, (uint32_t)56U, (uint32_t)8U, (uint32_t)25U, (uint32_t)43U,
(uint32_t)62U, (uint32_t)18U, (uint32_t)39U, (uint32_t)61U, (uint32_t)20U, (uint32_t)44U
};
static const uint32_t
keccak_piln[24U] = {
(uint32_t)10U, (uint32_t)7U, (uint32_t)11U, (uint32_t)17U, (uint32_t)18U, (uint32_t)3U,
(uint32_t)5U, (uint32_t)16U, (uint32_t)8U, (uint32_t)21U, (uint32_t)24U, (uint32_t)4U,
(uint32_t)15U, (uint32_t)23U, (uint32_t)19U, (uint32_t)13U, (uint32_t)12U, (uint32_t)2U,
(uint32_t)20U, (uint32_t)14U, (uint32_t)22U, (uint32_t)9U, (uint32_t)6U, (uint32_t)1U
};
static const uint64_t
keccak_rndc[24U] = {
(uint64_t)0x0000000000000001U, (uint64_t)0x0000000000008082U, (uint64_t)0x800000000000808aU,
(uint64_t)0x8000000080008000U, (uint64_t)0x000000000000808bU, (uint64_t)0x0000000080000001U,
(uint64_t)0x8000000080008081U, (uint64_t)0x8000000000008009U, (uint64_t)0x000000000000008aU,
(uint64_t)0x0000000000000088U, (uint64_t)0x0000000080008009U, (uint64_t)0x000000008000000aU,
(uint64_t)0x000000008000808bU, (uint64_t)0x800000000000008bU, (uint64_t)0x8000000000008089U,
(uint64_t)0x8000000000008003U, (uint64_t)0x8000000000008002U, (uint64_t)0x8000000000000080U,
(uint64_t)0x000000000000800aU, (uint64_t)0x800000008000000aU, (uint64_t)0x8000000080008081U,
(uint64_t)0x8000000000008080U, (uint64_t)0x0000000080000001U, (uint64_t)0x8000000080008008U
};
void
Hacl_Impl_SHA3_state_permute(uint64_t *s)
{
for (uint32_t i0 = (uint32_t)0U; i0 < (uint32_t)24U; i0++) {
uint64_t _C[5U] = { 0U };
KRML_MAYBE_FOR5(i,
(uint32_t)0U,
(uint32_t)5U,
(uint32_t)1U,
_C[i] =
s[i + (uint32_t)0U] ^
(s[i + (uint32_t)5U] ^ (s[i + (uint32_t)10U] ^ (s[i + (uint32_t)15U] ^ s[i + (uint32_t)20U]))););
KRML_MAYBE_FOR5(i1,
(uint32_t)0U,
(uint32_t)5U,
(uint32_t)1U,
uint64_t uu____0 = _C[(i1 + (uint32_t)1U) % (uint32_t)5U];
uint64_t
_D =
_C[(i1 + (uint32_t)4U) % (uint32_t)5U] ^ (uu____0 << (uint32_t)1U | uu____0 >> (uint32_t)63U);
KRML_MAYBE_FOR5(i,
(uint32_t)0U,
(uint32_t)5U,
(uint32_t)1U,
s[i1 + (uint32_t)5U * i] = s[i1 + (uint32_t)5U * i] ^ _D;););
uint64_t x = s[1U];
uint64_t current = x;
for (uint32_t i = (uint32_t)0U; i < (uint32_t)24U; i++) {
uint32_t _Y = keccak_piln[i];
uint32_t r = keccak_rotc[i];
uint64_t temp = s[_Y];
uint64_t uu____1 = current;
s[_Y] = uu____1 << r | uu____1 >> ((uint32_t)64U - r);
current = temp;
}
KRML_MAYBE_FOR5(i,
(uint32_t)0U,
(uint32_t)5U,
(uint32_t)1U,
uint64_t
v0 =
s[(uint32_t)0U + (uint32_t)5U * i] ^ (~s[(uint32_t)1U + (uint32_t)5U * i] & s[(uint32_t)2U + (uint32_t)5U * i]);
uint64_t
v1 =
s[(uint32_t)1U + (uint32_t)5U * i] ^ (~s[(uint32_t)2U + (uint32_t)5U * i] & s[(uint32_t)3U + (uint32_t)5U * i]);
uint64_t
v2 =
s[(uint32_t)2U + (uint32_t)5U * i] ^ (~s[(uint32_t)3U + (uint32_t)5U * i] & s[(uint32_t)4U + (uint32_t)5U * i]);
uint64_t
v3 =
s[(uint32_t)3U + (uint32_t)5U * i] ^ (~s[(uint32_t)4U + (uint32_t)5U * i] & s[(uint32_t)0U + (uint32_t)5U * i]);
uint64_t
v4 =
s[(uint32_t)4U + (uint32_t)5U * i] ^ (~s[(uint32_t)0U + (uint32_t)5U * i] & s[(uint32_t)1U + (uint32_t)5U * i]);
s[(uint32_t)0U + (uint32_t)5U * i] = v0;
s[(uint32_t)1U + (uint32_t)5U * i] = v1;
s[(uint32_t)2U + (uint32_t)5U * i] = v2;
s[(uint32_t)3U + (uint32_t)5U * i] = v3;
s[(uint32_t)4U + (uint32_t)5U * i] = v4;);
uint64_t c = keccak_rndc[i0];
s[0U] = s[0U] ^ c;
}
}
void
Hacl_Impl_SHA3_loadState(uint32_t rateInBytes, uint8_t *input, uint64_t *s)
{
uint8_t block[200U] = { 0U };
memcpy(block, input, rateInBytes * sizeof(uint8_t));
for (uint32_t i = (uint32_t)0U; i < (uint32_t)25U; i++) {
uint64_t u = load64_le(block + i * (uint32_t)8U);
uint64_t x = u;
s[i] = s[i] ^ x;
}
}
static void
storeState(uint32_t rateInBytes, uint64_t *s, uint8_t *res)
{
uint8_t block[200U] = { 0U };
for (uint32_t i = (uint32_t)0U; i < (uint32_t)25U; i++) {
uint64_t sj = s[i];
store64_le(block + i * (uint32_t)8U, sj);
}
memcpy(res, block, rateInBytes * sizeof(uint8_t));
}
void
Hacl_Impl_SHA3_absorb_inner(uint32_t rateInBytes, uint8_t *block, uint64_t *s)
{
Hacl_Impl_SHA3_loadState(rateInBytes, block, s);
Hacl_Impl_SHA3_state_permute(s);
}
static void
absorb(
uint64_t *s,
uint32_t rateInBytes,
uint32_t inputByteLen,
uint8_t *input,
uint8_t delimitedSuffix)
{
uint32_t n_blocks = inputByteLen / rateInBytes;
uint32_t rem = inputByteLen % rateInBytes;
for (uint32_t i = (uint32_t)0U; i < n_blocks; i++) {
uint8_t *block = input + i * rateInBytes;
Hacl_Impl_SHA3_absorb_inner(rateInBytes, block, s);
}
uint8_t *last = input + n_blocks * rateInBytes;
uint8_t lastBlock_[200U] = { 0U };
uint8_t *lastBlock = lastBlock_;
memcpy(lastBlock, last, rem * sizeof(uint8_t));
lastBlock[rem] = delimitedSuffix;
Hacl_Impl_SHA3_loadState(rateInBytes, lastBlock, s);
if (!((delimitedSuffix & (uint8_t)0x80U) == (uint8_t)0U) && rem == rateInBytes - (uint32_t)1U) {
Hacl_Impl_SHA3_state_permute(s);
}
uint8_t nextBlock_[200U] = { 0U };
uint8_t *nextBlock = nextBlock_;
nextBlock[rateInBytes - (uint32_t)1U] = (uint8_t)0x80U;
Hacl_Impl_SHA3_loadState(rateInBytes, nextBlock, s);
Hacl_Impl_SHA3_state_permute(s);
}
void
Hacl_Impl_SHA3_squeeze(
uint64_t *s,
uint32_t rateInBytes,
uint32_t outputByteLen,
uint8_t *output)
{
uint32_t outBlocks = outputByteLen / rateInBytes;
uint32_t remOut = outputByteLen % rateInBytes;
uint8_t *last = output + outputByteLen - remOut;
uint8_t *blocks = output;
for (uint32_t i = (uint32_t)0U; i < outBlocks; i++) {
storeState(rateInBytes, s, blocks + i * rateInBytes);
Hacl_Impl_SHA3_state_permute(s);
}
storeState(remOut, s, last);
}
void
Hacl_Impl_SHA3_keccak(
uint32_t rate,
uint32_t capacity,
uint32_t inputByteLen,
uint8_t *input,
uint8_t delimitedSuffix,
uint32_t outputByteLen,
uint8_t *output)
{
KRML_HOST_IGNORE(capacity);
uint32_t rateInBytes = rate / (uint32_t)8U;
uint64_t s[25U] = { 0U };
absorb(s, rateInBytes, inputByteLen, input, delimitedSuffix);
Hacl_Impl_SHA3_squeeze(s, rateInBytes, outputByteLen, output);
}