/* 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);

}