/* MIT License
 *
 * Copyright (c) 2016-2020 INRIA, CMU and Microsoft Corporation
 *
 * 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 "Hacl_Chacha20_Vec256.h"

static inline void
double_round_256(Lib_IntVector_Intrinsics_vec256 *st)
{
    st[0U] = Lib_IntVector_Intrinsics_vec256_add32(st[0U], st[4U]);
    Lib_IntVector_Intrinsics_vec256 std = Lib_IntVector_Intrinsics_vec256_xor(st[12U], st[0U]);
    st[12U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std, (uint32_t)16U);
    st[8U] = Lib_IntVector_Intrinsics_vec256_add32(st[8U], st[12U]);
    Lib_IntVector_Intrinsics_vec256 std0 = Lib_IntVector_Intrinsics_vec256_xor(st[4U], st[8U]);
    st[4U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std0, (uint32_t)12U);
    st[0U] = Lib_IntVector_Intrinsics_vec256_add32(st[0U], st[4U]);
    Lib_IntVector_Intrinsics_vec256 std1 = Lib_IntVector_Intrinsics_vec256_xor(st[12U], st[0U]);
    st[12U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std1, (uint32_t)8U);
    st[8U] = Lib_IntVector_Intrinsics_vec256_add32(st[8U], st[12U]);
    Lib_IntVector_Intrinsics_vec256 std2 = Lib_IntVector_Intrinsics_vec256_xor(st[4U], st[8U]);
    st[4U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std2, (uint32_t)7U);
    st[1U] = Lib_IntVector_Intrinsics_vec256_add32(st[1U], st[5U]);
    Lib_IntVector_Intrinsics_vec256 std3 = Lib_IntVector_Intrinsics_vec256_xor(st[13U], st[1U]);
    st[13U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std3, (uint32_t)16U);
    st[9U] = Lib_IntVector_Intrinsics_vec256_add32(st[9U], st[13U]);
    Lib_IntVector_Intrinsics_vec256 std4 = Lib_IntVector_Intrinsics_vec256_xor(st[5U], st[9U]);
    st[5U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std4, (uint32_t)12U);
    st[1U] = Lib_IntVector_Intrinsics_vec256_add32(st[1U], st[5U]);
    Lib_IntVector_Intrinsics_vec256 std5 = Lib_IntVector_Intrinsics_vec256_xor(st[13U], st[1U]);
    st[13U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std5, (uint32_t)8U);
    st[9U] = Lib_IntVector_Intrinsics_vec256_add32(st[9U], st[13U]);
    Lib_IntVector_Intrinsics_vec256 std6 = Lib_IntVector_Intrinsics_vec256_xor(st[5U], st[9U]);
    st[5U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std6, (uint32_t)7U);
    st[2U] = Lib_IntVector_Intrinsics_vec256_add32(st[2U], st[6U]);
    Lib_IntVector_Intrinsics_vec256 std7 = Lib_IntVector_Intrinsics_vec256_xor(st[14U], st[2U]);
    st[14U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std7, (uint32_t)16U);
    st[10U] = Lib_IntVector_Intrinsics_vec256_add32(st[10U], st[14U]);
    Lib_IntVector_Intrinsics_vec256 std8 = Lib_IntVector_Intrinsics_vec256_xor(st[6U], st[10U]);
    st[6U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std8, (uint32_t)12U);
    st[2U] = Lib_IntVector_Intrinsics_vec256_add32(st[2U], st[6U]);
    Lib_IntVector_Intrinsics_vec256 std9 = Lib_IntVector_Intrinsics_vec256_xor(st[14U], st[2U]);
    st[14U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std9, (uint32_t)8U);
    st[10U] = Lib_IntVector_Intrinsics_vec256_add32(st[10U], st[14U]);
    Lib_IntVector_Intrinsics_vec256 std10 = Lib_IntVector_Intrinsics_vec256_xor(st[6U], st[10U]);
    st[6U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std10, (uint32_t)7U);
    st[3U] = Lib_IntVector_Intrinsics_vec256_add32(st[3U], st[7U]);
    Lib_IntVector_Intrinsics_vec256 std11 = Lib_IntVector_Intrinsics_vec256_xor(st[15U], st[3U]);
    st[15U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std11, (uint32_t)16U);
    st[11U] = Lib_IntVector_Intrinsics_vec256_add32(st[11U], st[15U]);
    Lib_IntVector_Intrinsics_vec256 std12 = Lib_IntVector_Intrinsics_vec256_xor(st[7U], st[11U]);
    st[7U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std12, (uint32_t)12U);
    st[3U] = Lib_IntVector_Intrinsics_vec256_add32(st[3U], st[7U]);
    Lib_IntVector_Intrinsics_vec256 std13 = Lib_IntVector_Intrinsics_vec256_xor(st[15U], st[3U]);
    st[15U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std13, (uint32_t)8U);
    st[11U] = Lib_IntVector_Intrinsics_vec256_add32(st[11U], st[15U]);
    Lib_IntVector_Intrinsics_vec256 std14 = Lib_IntVector_Intrinsics_vec256_xor(st[7U], st[11U]);
    st[7U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std14, (uint32_t)7U);
    st[0U] = Lib_IntVector_Intrinsics_vec256_add32(st[0U], st[5U]);
    Lib_IntVector_Intrinsics_vec256 std15 = Lib_IntVector_Intrinsics_vec256_xor(st[15U], st[0U]);
    st[15U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std15, (uint32_t)16U);
    st[10U] = Lib_IntVector_Intrinsics_vec256_add32(st[10U], st[15U]);
    Lib_IntVector_Intrinsics_vec256 std16 = Lib_IntVector_Intrinsics_vec256_xor(st[5U], st[10U]);
    st[5U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std16, (uint32_t)12U);
    st[0U] = Lib_IntVector_Intrinsics_vec256_add32(st[0U], st[5U]);
    Lib_IntVector_Intrinsics_vec256 std17 = Lib_IntVector_Intrinsics_vec256_xor(st[15U], st[0U]);
    st[15U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std17, (uint32_t)8U);
    st[10U] = Lib_IntVector_Intrinsics_vec256_add32(st[10U], st[15U]);
    Lib_IntVector_Intrinsics_vec256 std18 = Lib_IntVector_Intrinsics_vec256_xor(st[5U], st[10U]);
    st[5U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std18, (uint32_t)7U);
    st[1U] = Lib_IntVector_Intrinsics_vec256_add32(st[1U], st[6U]);
    Lib_IntVector_Intrinsics_vec256 std19 = Lib_IntVector_Intrinsics_vec256_xor(st[12U], st[1U]);
    st[12U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std19, (uint32_t)16U);
    st[11U] = Lib_IntVector_Intrinsics_vec256_add32(st[11U], st[12U]);
    Lib_IntVector_Intrinsics_vec256 std20 = Lib_IntVector_Intrinsics_vec256_xor(st[6U], st[11U]);
    st[6U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std20, (uint32_t)12U);
    st[1U] = Lib_IntVector_Intrinsics_vec256_add32(st[1U], st[6U]);
    Lib_IntVector_Intrinsics_vec256 std21 = Lib_IntVector_Intrinsics_vec256_xor(st[12U], st[1U]);
    st[12U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std21, (uint32_t)8U);
    st[11U] = Lib_IntVector_Intrinsics_vec256_add32(st[11U], st[12U]);
    Lib_IntVector_Intrinsics_vec256 std22 = Lib_IntVector_Intrinsics_vec256_xor(st[6U], st[11U]);
    st[6U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std22, (uint32_t)7U);
    st[2U] = Lib_IntVector_Intrinsics_vec256_add32(st[2U], st[7U]);
    Lib_IntVector_Intrinsics_vec256 std23 = Lib_IntVector_Intrinsics_vec256_xor(st[13U], st[2U]);
    st[13U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std23, (uint32_t)16U);
    st[8U] = Lib_IntVector_Intrinsics_vec256_add32(st[8U], st[13U]);
    Lib_IntVector_Intrinsics_vec256 std24 = Lib_IntVector_Intrinsics_vec256_xor(st[7U], st[8U]);
    st[7U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std24, (uint32_t)12U);
    st[2U] = Lib_IntVector_Intrinsics_vec256_add32(st[2U], st[7U]);
    Lib_IntVector_Intrinsics_vec256 std25 = Lib_IntVector_Intrinsics_vec256_xor(st[13U], st[2U]);
    st[13U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std25, (uint32_t)8U);
    st[8U] = Lib_IntVector_Intrinsics_vec256_add32(st[8U], st[13U]);
    Lib_IntVector_Intrinsics_vec256 std26 = Lib_IntVector_Intrinsics_vec256_xor(st[7U], st[8U]);
    st[7U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std26, (uint32_t)7U);
    st[3U] = Lib_IntVector_Intrinsics_vec256_add32(st[3U], st[4U]);
    Lib_IntVector_Intrinsics_vec256 std27 = Lib_IntVector_Intrinsics_vec256_xor(st[14U], st[3U]);
    st[14U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std27, (uint32_t)16U);
    st[9U] = Lib_IntVector_Intrinsics_vec256_add32(st[9U], st[14U]);
    Lib_IntVector_Intrinsics_vec256 std28 = Lib_IntVector_Intrinsics_vec256_xor(st[4U], st[9U]);
    st[4U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std28, (uint32_t)12U);
    st[3U] = Lib_IntVector_Intrinsics_vec256_add32(st[3U], st[4U]);
    Lib_IntVector_Intrinsics_vec256 std29 = Lib_IntVector_Intrinsics_vec256_xor(st[14U], st[3U]);
    st[14U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std29, (uint32_t)8U);
    st[9U] = Lib_IntVector_Intrinsics_vec256_add32(st[9U], st[14U]);
    Lib_IntVector_Intrinsics_vec256 std30 = Lib_IntVector_Intrinsics_vec256_xor(st[4U], st[9U]);
    st[4U] = Lib_IntVector_Intrinsics_vec256_rotate_left32(std30, (uint32_t)7U);
}

static inline void
chacha20_core_256(
    Lib_IntVector_Intrinsics_vec256 *k,
    Lib_IntVector_Intrinsics_vec256 *ctx,
    uint32_t ctr)
{
    memcpy(k, ctx, (uint32_t)16U * sizeof(Lib_IntVector_Intrinsics_vec256));
    uint32_t ctr_u32 = (uint32_t)8U * ctr;
    Lib_IntVector_Intrinsics_vec256 cv = Lib_IntVector_Intrinsics_vec256_load32(ctr_u32);
    k[12U] = Lib_IntVector_Intrinsics_vec256_add32(k[12U], cv);
    double_round_256(k);
    double_round_256(k);
    double_round_256(k);
    double_round_256(k);
    double_round_256(k);
    double_round_256(k);
    double_round_256(k);
    double_round_256(k);
    double_round_256(k);
    double_round_256(k);
    for (uint32_t i = (uint32_t)0U; i < (uint32_t)16U; i++) {
        Lib_IntVector_Intrinsics_vec256 *os = k;
        Lib_IntVector_Intrinsics_vec256 x = Lib_IntVector_Intrinsics_vec256_add32(k[i], ctx[i]);
        os[i] = x;
    }
    k[12U] = Lib_IntVector_Intrinsics_vec256_add32(k[12U], cv);
}

static inline void
chacha20_init_256(Lib_IntVector_Intrinsics_vec256 *ctx, uint8_t *k, uint8_t *n, uint32_t ctr)
{
    uint32_t ctx1[16U] = { 0U };
    uint32_t *uu____0 = ctx1;
    for (uint32_t i = (uint32_t)0U; i < (uint32_t)4U; i++) {
        uint32_t *os = uu____0;
        uint32_t x = Hacl_Impl_Chacha20_Vec_chacha20_constants[i];
        os[i] = x;
    }
    uint32_t *uu____1 = ctx1 + (uint32_t)4U;
    for (uint32_t i = (uint32_t)0U; i < (uint32_t)8U; i++) {
        uint32_t *os = uu____1;
        uint8_t *bj = k + i * (uint32_t)4U;
        uint32_t u = load32_le(bj);
        uint32_t r = u;
        uint32_t x = r;
        os[i] = x;
    }
    ctx1[12U] = ctr;
    uint32_t *uu____2 = ctx1 + (uint32_t)13U;
    for (uint32_t i = (uint32_t)0U; i < (uint32_t)3U; i++) {
        uint32_t *os = uu____2;
        uint8_t *bj = n + i * (uint32_t)4U;
        uint32_t u = load32_le(bj);
        uint32_t r = u;
        uint32_t x = r;
        os[i] = x;
    }
    for (uint32_t i = (uint32_t)0U; i < (uint32_t)16U; i++) {
        Lib_IntVector_Intrinsics_vec256 *os = ctx;
        uint32_t x = ctx1[i];
        Lib_IntVector_Intrinsics_vec256 x0 = Lib_IntVector_Intrinsics_vec256_load32(x);
        os[i] = x0;
    }
    Lib_IntVector_Intrinsics_vec256
        ctr1 =
            Lib_IntVector_Intrinsics_vec256_load32s((uint32_t)0U,
                                                    (uint32_t)1U,
                                                    (uint32_t)2U,
                                                    (uint32_t)3U,
                                                    (uint32_t)4U,
                                                    (uint32_t)5U,
                                                    (uint32_t)6U,
                                                    (uint32_t)7U);
    Lib_IntVector_Intrinsics_vec256 c12 = ctx[12U];
    ctx[12U] = Lib_IntVector_Intrinsics_vec256_add32(c12, ctr1);
}

void
Hacl_Chacha20_Vec256_chacha20_encrypt_256(
    uint32_t len,
    uint8_t *out,
    uint8_t *text,
    uint8_t *key,
    uint8_t *n,
    uint32_t ctr)
{
    Lib_IntVector_Intrinsics_vec256 ctx[16U];
    for (uint32_t _i = 0U; _i < (uint32_t)16U; ++_i)
        ctx[_i] = Lib_IntVector_Intrinsics_vec256_zero;
    chacha20_init_256(ctx, key, n, ctr);
    uint32_t rem = len % (uint32_t)512U;
    uint32_t nb = len / (uint32_t)512U;
    uint32_t rem1 = len % (uint32_t)512U;
    for (uint32_t i = (uint32_t)0U; i < nb; i++) {
        uint8_t *uu____0 = out + i * (uint32_t)512U;
        uint8_t *uu____1 = text + i * (uint32_t)512U;
        Lib_IntVector_Intrinsics_vec256 k[16U];
        for (uint32_t _i = 0U; _i < (uint32_t)16U; ++_i)
            k[_i] = Lib_IntVector_Intrinsics_vec256_zero;
        chacha20_core_256(k, ctx, i);
        Lib_IntVector_Intrinsics_vec256 v00 = k[0U];
        Lib_IntVector_Intrinsics_vec256 v16 = k[1U];
        Lib_IntVector_Intrinsics_vec256 v20 = k[2U];
        Lib_IntVector_Intrinsics_vec256 v30 = k[3U];
        Lib_IntVector_Intrinsics_vec256 v40 = k[4U];
        Lib_IntVector_Intrinsics_vec256 v50 = k[5U];
        Lib_IntVector_Intrinsics_vec256 v60 = k[6U];
        Lib_IntVector_Intrinsics_vec256 v70 = k[7U];
        Lib_IntVector_Intrinsics_vec256
            v0_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v00, v16);
        Lib_IntVector_Intrinsics_vec256
            v1_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v00, v16);
        Lib_IntVector_Intrinsics_vec256
            v2_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v20, v30);
        Lib_IntVector_Intrinsics_vec256
            v3_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v20, v30);
        Lib_IntVector_Intrinsics_vec256
            v4_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v40, v50);
        Lib_IntVector_Intrinsics_vec256
            v5_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v40, v50);
        Lib_IntVector_Intrinsics_vec256
            v6_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v60, v70);
        Lib_IntVector_Intrinsics_vec256
            v7_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v60, v70);
        Lib_IntVector_Intrinsics_vec256
            v0__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_, v2_);
        Lib_IntVector_Intrinsics_vec256
            v1__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_, v2_);
        Lib_IntVector_Intrinsics_vec256
            v2__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_, v3_);
        Lib_IntVector_Intrinsics_vec256
            v3__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_, v3_);
        Lib_IntVector_Intrinsics_vec256
            v4__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_, v6_);
        Lib_IntVector_Intrinsics_vec256
            v5__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_, v6_);
        Lib_IntVector_Intrinsics_vec256
            v6__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_, v7_);
        Lib_IntVector_Intrinsics_vec256
            v7__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_, v7_);
        Lib_IntVector_Intrinsics_vec256
            v0___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0__, v4__);
        Lib_IntVector_Intrinsics_vec256
            v1___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0__, v4__);
        Lib_IntVector_Intrinsics_vec256
            v2___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1__, v5__);
        Lib_IntVector_Intrinsics_vec256
            v3___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1__, v5__);
        Lib_IntVector_Intrinsics_vec256
            v4___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2__, v6__);
        Lib_IntVector_Intrinsics_vec256
            v5___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2__, v6__);
        Lib_IntVector_Intrinsics_vec256
            v6___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3__, v7__);
        Lib_IntVector_Intrinsics_vec256
            v7___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3__, v7__);
        Lib_IntVector_Intrinsics_vec256 v0 = v0___;
        Lib_IntVector_Intrinsics_vec256 v1 = v2___;
        Lib_IntVector_Intrinsics_vec256 v2 = v4___;
        Lib_IntVector_Intrinsics_vec256 v3 = v6___;
        Lib_IntVector_Intrinsics_vec256 v4 = v1___;
        Lib_IntVector_Intrinsics_vec256 v5 = v3___;
        Lib_IntVector_Intrinsics_vec256 v6 = v5___;
        Lib_IntVector_Intrinsics_vec256 v7 = v7___;
        Lib_IntVector_Intrinsics_vec256 v01 = k[8U];
        Lib_IntVector_Intrinsics_vec256 v110 = k[9U];
        Lib_IntVector_Intrinsics_vec256 v21 = k[10U];
        Lib_IntVector_Intrinsics_vec256 v31 = k[11U];
        Lib_IntVector_Intrinsics_vec256 v41 = k[12U];
        Lib_IntVector_Intrinsics_vec256 v51 = k[13U];
        Lib_IntVector_Intrinsics_vec256 v61 = k[14U];
        Lib_IntVector_Intrinsics_vec256 v71 = k[15U];
        Lib_IntVector_Intrinsics_vec256
            v0_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v1_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v2_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v3_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v4_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v5_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v6_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v61, v71);
        Lib_IntVector_Intrinsics_vec256
            v7_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v61, v71);
        Lib_IntVector_Intrinsics_vec256
            v0__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v1__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v2__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v3__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v4__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v5__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v6__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256
            v7__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256
            v0___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0__0, v4__0);
        Lib_IntVector_Intrinsics_vec256
            v1___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0__0, v4__0);
        Lib_IntVector_Intrinsics_vec256
            v2___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1__0, v5__0);
        Lib_IntVector_Intrinsics_vec256
            v3___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1__0, v5__0);
        Lib_IntVector_Intrinsics_vec256
            v4___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2__0, v6__0);
        Lib_IntVector_Intrinsics_vec256
            v5___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2__0, v6__0);
        Lib_IntVector_Intrinsics_vec256
            v6___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3__0, v7__0);
        Lib_IntVector_Intrinsics_vec256
            v7___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3__0, v7__0);
        Lib_IntVector_Intrinsics_vec256 v8 = v0___0;
        Lib_IntVector_Intrinsics_vec256 v9 = v2___0;
        Lib_IntVector_Intrinsics_vec256 v10 = v4___0;
        Lib_IntVector_Intrinsics_vec256 v11 = v6___0;
        Lib_IntVector_Intrinsics_vec256 v12 = v1___0;
        Lib_IntVector_Intrinsics_vec256 v13 = v3___0;
        Lib_IntVector_Intrinsics_vec256 v14 = v5___0;
        Lib_IntVector_Intrinsics_vec256 v15 = v7___0;
        k[0U] = v0;
        k[1U] = v8;
        k[2U] = v1;
        k[3U] = v9;
        k[4U] = v2;
        k[5U] = v10;
        k[6U] = v3;
        k[7U] = v11;
        k[8U] = v4;
        k[9U] = v12;
        k[10U] = v5;
        k[11U] = v13;
        k[12U] = v6;
        k[13U] = v14;
        k[14U] = v7;
        k[15U] = v15;
        for (uint32_t i0 = (uint32_t)0U; i0 < (uint32_t)16U; i0++) {
            Lib_IntVector_Intrinsics_vec256
                x = Lib_IntVector_Intrinsics_vec256_load32_le(uu____1 + i0 * (uint32_t)32U);
            Lib_IntVector_Intrinsics_vec256 y = Lib_IntVector_Intrinsics_vec256_xor(x, k[i0]);
            Lib_IntVector_Intrinsics_vec256_store32_le(uu____0 + i0 * (uint32_t)32U, y);
        }
    }
    if (rem1 > (uint32_t)0U) {
        uint8_t *uu____2 = out + nb * (uint32_t)512U;
        uint8_t *uu____3 = text + nb * (uint32_t)512U;
        uint8_t plain[512U] = { 0U };
        memcpy(plain, uu____3, rem * sizeof(uint8_t));
        Lib_IntVector_Intrinsics_vec256 k[16U];
        for (uint32_t _i = 0U; _i < (uint32_t)16U; ++_i)
            k[_i] = Lib_IntVector_Intrinsics_vec256_zero;
        chacha20_core_256(k, ctx, nb);
        Lib_IntVector_Intrinsics_vec256 v00 = k[0U];
        Lib_IntVector_Intrinsics_vec256 v16 = k[1U];
        Lib_IntVector_Intrinsics_vec256 v20 = k[2U];
        Lib_IntVector_Intrinsics_vec256 v30 = k[3U];
        Lib_IntVector_Intrinsics_vec256 v40 = k[4U];
        Lib_IntVector_Intrinsics_vec256 v50 = k[5U];
        Lib_IntVector_Intrinsics_vec256 v60 = k[6U];
        Lib_IntVector_Intrinsics_vec256 v70 = k[7U];
        Lib_IntVector_Intrinsics_vec256
            v0_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v00, v16);
        Lib_IntVector_Intrinsics_vec256
            v1_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v00, v16);
        Lib_IntVector_Intrinsics_vec256
            v2_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v20, v30);
        Lib_IntVector_Intrinsics_vec256
            v3_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v20, v30);
        Lib_IntVector_Intrinsics_vec256
            v4_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v40, v50);
        Lib_IntVector_Intrinsics_vec256
            v5_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v40, v50);
        Lib_IntVector_Intrinsics_vec256
            v6_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v60, v70);
        Lib_IntVector_Intrinsics_vec256
            v7_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v60, v70);
        Lib_IntVector_Intrinsics_vec256
            v0__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_, v2_);
        Lib_IntVector_Intrinsics_vec256
            v1__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_, v2_);
        Lib_IntVector_Intrinsics_vec256
            v2__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_, v3_);
        Lib_IntVector_Intrinsics_vec256
            v3__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_, v3_);
        Lib_IntVector_Intrinsics_vec256
            v4__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_, v6_);
        Lib_IntVector_Intrinsics_vec256
            v5__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_, v6_);
        Lib_IntVector_Intrinsics_vec256
            v6__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_, v7_);
        Lib_IntVector_Intrinsics_vec256
            v7__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_, v7_);
        Lib_IntVector_Intrinsics_vec256
            v0___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0__, v4__);
        Lib_IntVector_Intrinsics_vec256
            v1___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0__, v4__);
        Lib_IntVector_Intrinsics_vec256
            v2___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1__, v5__);
        Lib_IntVector_Intrinsics_vec256
            v3___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1__, v5__);
        Lib_IntVector_Intrinsics_vec256
            v4___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2__, v6__);
        Lib_IntVector_Intrinsics_vec256
            v5___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2__, v6__);
        Lib_IntVector_Intrinsics_vec256
            v6___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3__, v7__);
        Lib_IntVector_Intrinsics_vec256
            v7___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3__, v7__);
        Lib_IntVector_Intrinsics_vec256 v0 = v0___;
        Lib_IntVector_Intrinsics_vec256 v1 = v2___;
        Lib_IntVector_Intrinsics_vec256 v2 = v4___;
        Lib_IntVector_Intrinsics_vec256 v3 = v6___;
        Lib_IntVector_Intrinsics_vec256 v4 = v1___;
        Lib_IntVector_Intrinsics_vec256 v5 = v3___;
        Lib_IntVector_Intrinsics_vec256 v6 = v5___;
        Lib_IntVector_Intrinsics_vec256 v7 = v7___;
        Lib_IntVector_Intrinsics_vec256 v01 = k[8U];
        Lib_IntVector_Intrinsics_vec256 v110 = k[9U];
        Lib_IntVector_Intrinsics_vec256 v21 = k[10U];
        Lib_IntVector_Intrinsics_vec256 v31 = k[11U];
        Lib_IntVector_Intrinsics_vec256 v41 = k[12U];
        Lib_IntVector_Intrinsics_vec256 v51 = k[13U];
        Lib_IntVector_Intrinsics_vec256 v61 = k[14U];
        Lib_IntVector_Intrinsics_vec256 v71 = k[15U];
        Lib_IntVector_Intrinsics_vec256
            v0_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v1_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v2_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v3_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v4_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v5_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v6_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v61, v71);
        Lib_IntVector_Intrinsics_vec256
            v7_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v61, v71);
        Lib_IntVector_Intrinsics_vec256
            v0__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v1__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v2__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v3__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v4__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v5__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v6__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256
            v7__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256
            v0___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0__0, v4__0);
        Lib_IntVector_Intrinsics_vec256
            v1___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0__0, v4__0);
        Lib_IntVector_Intrinsics_vec256
            v2___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1__0, v5__0);
        Lib_IntVector_Intrinsics_vec256
            v3___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1__0, v5__0);
        Lib_IntVector_Intrinsics_vec256
            v4___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2__0, v6__0);
        Lib_IntVector_Intrinsics_vec256
            v5___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2__0, v6__0);
        Lib_IntVector_Intrinsics_vec256
            v6___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3__0, v7__0);
        Lib_IntVector_Intrinsics_vec256
            v7___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3__0, v7__0);
        Lib_IntVector_Intrinsics_vec256 v8 = v0___0;
        Lib_IntVector_Intrinsics_vec256 v9 = v2___0;
        Lib_IntVector_Intrinsics_vec256 v10 = v4___0;
        Lib_IntVector_Intrinsics_vec256 v11 = v6___0;
        Lib_IntVector_Intrinsics_vec256 v12 = v1___0;
        Lib_IntVector_Intrinsics_vec256 v13 = v3___0;
        Lib_IntVector_Intrinsics_vec256 v14 = v5___0;
        Lib_IntVector_Intrinsics_vec256 v15 = v7___0;
        k[0U] = v0;
        k[1U] = v8;
        k[2U] = v1;
        k[3U] = v9;
        k[4U] = v2;
        k[5U] = v10;
        k[6U] = v3;
        k[7U] = v11;
        k[8U] = v4;
        k[9U] = v12;
        k[10U] = v5;
        k[11U] = v13;
        k[12U] = v6;
        k[13U] = v14;
        k[14U] = v7;
        k[15U] = v15;
        for (uint32_t i = (uint32_t)0U; i < (uint32_t)16U; i++) {
            Lib_IntVector_Intrinsics_vec256
                x = Lib_IntVector_Intrinsics_vec256_load32_le(plain + i * (uint32_t)32U);
            Lib_IntVector_Intrinsics_vec256 y = Lib_IntVector_Intrinsics_vec256_xor(x, k[i]);
            Lib_IntVector_Intrinsics_vec256_store32_le(plain + i * (uint32_t)32U, y);
        }
        memcpy(uu____2, plain, rem * sizeof(uint8_t));
    }
}

void
Hacl_Chacha20_Vec256_chacha20_decrypt_256(
    uint32_t len,
    uint8_t *out,
    uint8_t *cipher,
    uint8_t *key,
    uint8_t *n,
    uint32_t ctr)
{
    Lib_IntVector_Intrinsics_vec256 ctx[16U];
    for (uint32_t _i = 0U; _i < (uint32_t)16U; ++_i)
        ctx[_i] = Lib_IntVector_Intrinsics_vec256_zero;
    chacha20_init_256(ctx, key, n, ctr);
    uint32_t rem = len % (uint32_t)512U;
    uint32_t nb = len / (uint32_t)512U;
    uint32_t rem1 = len % (uint32_t)512U;
    for (uint32_t i = (uint32_t)0U; i < nb; i++) {
        uint8_t *uu____0 = out + i * (uint32_t)512U;
        uint8_t *uu____1 = cipher + i * (uint32_t)512U;
        Lib_IntVector_Intrinsics_vec256 k[16U];
        for (uint32_t _i = 0U; _i < (uint32_t)16U; ++_i)
            k[_i] = Lib_IntVector_Intrinsics_vec256_zero;
        chacha20_core_256(k, ctx, i);
        Lib_IntVector_Intrinsics_vec256 v00 = k[0U];
        Lib_IntVector_Intrinsics_vec256 v16 = k[1U];
        Lib_IntVector_Intrinsics_vec256 v20 = k[2U];
        Lib_IntVector_Intrinsics_vec256 v30 = k[3U];
        Lib_IntVector_Intrinsics_vec256 v40 = k[4U];
        Lib_IntVector_Intrinsics_vec256 v50 = k[5U];
        Lib_IntVector_Intrinsics_vec256 v60 = k[6U];
        Lib_IntVector_Intrinsics_vec256 v70 = k[7U];
        Lib_IntVector_Intrinsics_vec256
            v0_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v00, v16);
        Lib_IntVector_Intrinsics_vec256
            v1_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v00, v16);
        Lib_IntVector_Intrinsics_vec256
            v2_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v20, v30);
        Lib_IntVector_Intrinsics_vec256
            v3_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v20, v30);
        Lib_IntVector_Intrinsics_vec256
            v4_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v40, v50);
        Lib_IntVector_Intrinsics_vec256
            v5_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v40, v50);
        Lib_IntVector_Intrinsics_vec256
            v6_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v60, v70);
        Lib_IntVector_Intrinsics_vec256
            v7_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v60, v70);
        Lib_IntVector_Intrinsics_vec256
            v0__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_, v2_);
        Lib_IntVector_Intrinsics_vec256
            v1__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_, v2_);
        Lib_IntVector_Intrinsics_vec256
            v2__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_, v3_);
        Lib_IntVector_Intrinsics_vec256
            v3__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_, v3_);
        Lib_IntVector_Intrinsics_vec256
            v4__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_, v6_);
        Lib_IntVector_Intrinsics_vec256
            v5__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_, v6_);
        Lib_IntVector_Intrinsics_vec256
            v6__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_, v7_);
        Lib_IntVector_Intrinsics_vec256
            v7__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_, v7_);
        Lib_IntVector_Intrinsics_vec256
            v0___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0__, v4__);
        Lib_IntVector_Intrinsics_vec256
            v1___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0__, v4__);
        Lib_IntVector_Intrinsics_vec256
            v2___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1__, v5__);
        Lib_IntVector_Intrinsics_vec256
            v3___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1__, v5__);
        Lib_IntVector_Intrinsics_vec256
            v4___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2__, v6__);
        Lib_IntVector_Intrinsics_vec256
            v5___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2__, v6__);
        Lib_IntVector_Intrinsics_vec256
            v6___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3__, v7__);
        Lib_IntVector_Intrinsics_vec256
            v7___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3__, v7__);
        Lib_IntVector_Intrinsics_vec256 v0 = v0___;
        Lib_IntVector_Intrinsics_vec256 v1 = v2___;
        Lib_IntVector_Intrinsics_vec256 v2 = v4___;
        Lib_IntVector_Intrinsics_vec256 v3 = v6___;
        Lib_IntVector_Intrinsics_vec256 v4 = v1___;
        Lib_IntVector_Intrinsics_vec256 v5 = v3___;
        Lib_IntVector_Intrinsics_vec256 v6 = v5___;
        Lib_IntVector_Intrinsics_vec256 v7 = v7___;
        Lib_IntVector_Intrinsics_vec256 v01 = k[8U];
        Lib_IntVector_Intrinsics_vec256 v110 = k[9U];
        Lib_IntVector_Intrinsics_vec256 v21 = k[10U];
        Lib_IntVector_Intrinsics_vec256 v31 = k[11U];
        Lib_IntVector_Intrinsics_vec256 v41 = k[12U];
        Lib_IntVector_Intrinsics_vec256 v51 = k[13U];
        Lib_IntVector_Intrinsics_vec256 v61 = k[14U];
        Lib_IntVector_Intrinsics_vec256 v71 = k[15U];
        Lib_IntVector_Intrinsics_vec256
            v0_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v1_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v2_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v3_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v4_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v5_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v6_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v61, v71);
        Lib_IntVector_Intrinsics_vec256
            v7_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v61, v71);
        Lib_IntVector_Intrinsics_vec256
            v0__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v1__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v2__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v3__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v4__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v5__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v6__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256
            v7__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256
            v0___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0__0, v4__0);
        Lib_IntVector_Intrinsics_vec256
            v1___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0__0, v4__0);
        Lib_IntVector_Intrinsics_vec256
            v2___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1__0, v5__0);
        Lib_IntVector_Intrinsics_vec256
            v3___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1__0, v5__0);
        Lib_IntVector_Intrinsics_vec256
            v4___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2__0, v6__0);
        Lib_IntVector_Intrinsics_vec256
            v5___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2__0, v6__0);
        Lib_IntVector_Intrinsics_vec256
            v6___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3__0, v7__0);
        Lib_IntVector_Intrinsics_vec256
            v7___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3__0, v7__0);
        Lib_IntVector_Intrinsics_vec256 v8 = v0___0;
        Lib_IntVector_Intrinsics_vec256 v9 = v2___0;
        Lib_IntVector_Intrinsics_vec256 v10 = v4___0;
        Lib_IntVector_Intrinsics_vec256 v11 = v6___0;
        Lib_IntVector_Intrinsics_vec256 v12 = v1___0;
        Lib_IntVector_Intrinsics_vec256 v13 = v3___0;
        Lib_IntVector_Intrinsics_vec256 v14 = v5___0;
        Lib_IntVector_Intrinsics_vec256 v15 = v7___0;
        k[0U] = v0;
        k[1U] = v8;
        k[2U] = v1;
        k[3U] = v9;
        k[4U] = v2;
        k[5U] = v10;
        k[6U] = v3;
        k[7U] = v11;
        k[8U] = v4;
        k[9U] = v12;
        k[10U] = v5;
        k[11U] = v13;
        k[12U] = v6;
        k[13U] = v14;
        k[14U] = v7;
        k[15U] = v15;
        for (uint32_t i0 = (uint32_t)0U; i0 < (uint32_t)16U; i0++) {
            Lib_IntVector_Intrinsics_vec256
                x = Lib_IntVector_Intrinsics_vec256_load32_le(uu____1 + i0 * (uint32_t)32U);
            Lib_IntVector_Intrinsics_vec256 y = Lib_IntVector_Intrinsics_vec256_xor(x, k[i0]);
            Lib_IntVector_Intrinsics_vec256_store32_le(uu____0 + i0 * (uint32_t)32U, y);
        }
    }
    if (rem1 > (uint32_t)0U) {
        uint8_t *uu____2 = out + nb * (uint32_t)512U;
        uint8_t *uu____3 = cipher + nb * (uint32_t)512U;
        uint8_t plain[512U] = { 0U };
        memcpy(plain, uu____3, rem * sizeof(uint8_t));
        Lib_IntVector_Intrinsics_vec256 k[16U];
        for (uint32_t _i = 0U; _i < (uint32_t)16U; ++_i)
            k[_i] = Lib_IntVector_Intrinsics_vec256_zero;
        chacha20_core_256(k, ctx, nb);
        Lib_IntVector_Intrinsics_vec256 v00 = k[0U];
        Lib_IntVector_Intrinsics_vec256 v16 = k[1U];
        Lib_IntVector_Intrinsics_vec256 v20 = k[2U];
        Lib_IntVector_Intrinsics_vec256 v30 = k[3U];
        Lib_IntVector_Intrinsics_vec256 v40 = k[4U];
        Lib_IntVector_Intrinsics_vec256 v50 = k[5U];
        Lib_IntVector_Intrinsics_vec256 v60 = k[6U];
        Lib_IntVector_Intrinsics_vec256 v70 = k[7U];
        Lib_IntVector_Intrinsics_vec256
            v0_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v00, v16);
        Lib_IntVector_Intrinsics_vec256
            v1_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v00, v16);
        Lib_IntVector_Intrinsics_vec256
            v2_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v20, v30);
        Lib_IntVector_Intrinsics_vec256
            v3_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v20, v30);
        Lib_IntVector_Intrinsics_vec256
            v4_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v40, v50);
        Lib_IntVector_Intrinsics_vec256
            v5_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v40, v50);
        Lib_IntVector_Intrinsics_vec256
            v6_ = Lib_IntVector_Intrinsics_vec256_interleave_low32(v60, v70);
        Lib_IntVector_Intrinsics_vec256
            v7_ = Lib_IntVector_Intrinsics_vec256_interleave_high32(v60, v70);
        Lib_IntVector_Intrinsics_vec256
            v0__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_, v2_);
        Lib_IntVector_Intrinsics_vec256
            v1__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_, v2_);
        Lib_IntVector_Intrinsics_vec256
            v2__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_, v3_);
        Lib_IntVector_Intrinsics_vec256
            v3__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_, v3_);
        Lib_IntVector_Intrinsics_vec256
            v4__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_, v6_);
        Lib_IntVector_Intrinsics_vec256
            v5__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_, v6_);
        Lib_IntVector_Intrinsics_vec256
            v6__ = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_, v7_);
        Lib_IntVector_Intrinsics_vec256
            v7__ = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_, v7_);
        Lib_IntVector_Intrinsics_vec256
            v0___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0__, v4__);
        Lib_IntVector_Intrinsics_vec256
            v1___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0__, v4__);
        Lib_IntVector_Intrinsics_vec256
            v2___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1__, v5__);
        Lib_IntVector_Intrinsics_vec256
            v3___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1__, v5__);
        Lib_IntVector_Intrinsics_vec256
            v4___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2__, v6__);
        Lib_IntVector_Intrinsics_vec256
            v5___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2__, v6__);
        Lib_IntVector_Intrinsics_vec256
            v6___ = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3__, v7__);
        Lib_IntVector_Intrinsics_vec256
            v7___ = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3__, v7__);
        Lib_IntVector_Intrinsics_vec256 v0 = v0___;
        Lib_IntVector_Intrinsics_vec256 v1 = v2___;
        Lib_IntVector_Intrinsics_vec256 v2 = v4___;
        Lib_IntVector_Intrinsics_vec256 v3 = v6___;
        Lib_IntVector_Intrinsics_vec256 v4 = v1___;
        Lib_IntVector_Intrinsics_vec256 v5 = v3___;
        Lib_IntVector_Intrinsics_vec256 v6 = v5___;
        Lib_IntVector_Intrinsics_vec256 v7 = v7___;
        Lib_IntVector_Intrinsics_vec256 v01 = k[8U];
        Lib_IntVector_Intrinsics_vec256 v110 = k[9U];
        Lib_IntVector_Intrinsics_vec256 v21 = k[10U];
        Lib_IntVector_Intrinsics_vec256 v31 = k[11U];
        Lib_IntVector_Intrinsics_vec256 v41 = k[12U];
        Lib_IntVector_Intrinsics_vec256 v51 = k[13U];
        Lib_IntVector_Intrinsics_vec256 v61 = k[14U];
        Lib_IntVector_Intrinsics_vec256 v71 = k[15U];
        Lib_IntVector_Intrinsics_vec256
            v0_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v1_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v2_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v3_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v4_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v5_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v6_0 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v61, v71);
        Lib_IntVector_Intrinsics_vec256
            v7_0 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v61, v71);
        Lib_IntVector_Intrinsics_vec256
            v0__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v1__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v2__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v3__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v4__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v5__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v6__0 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256
            v7__0 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256
            v0___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0__0, v4__0);
        Lib_IntVector_Intrinsics_vec256
            v1___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0__0, v4__0);
        Lib_IntVector_Intrinsics_vec256
            v2___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1__0, v5__0);
        Lib_IntVector_Intrinsics_vec256
            v3___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1__0, v5__0);
        Lib_IntVector_Intrinsics_vec256
            v4___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2__0, v6__0);
        Lib_IntVector_Intrinsics_vec256
            v5___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2__0, v6__0);
        Lib_IntVector_Intrinsics_vec256
            v6___0 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3__0, v7__0);
        Lib_IntVector_Intrinsics_vec256
            v7___0 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3__0, v7__0);
        Lib_IntVector_Intrinsics_vec256 v8 = v0___0;
        Lib_IntVector_Intrinsics_vec256 v9 = v2___0;
        Lib_IntVector_Intrinsics_vec256 v10 = v4___0;
        Lib_IntVector_Intrinsics_vec256 v11 = v6___0;
        Lib_IntVector_Intrinsics_vec256 v12 = v1___0;
        Lib_IntVector_Intrinsics_vec256 v13 = v3___0;
        Lib_IntVector_Intrinsics_vec256 v14 = v5___0;
        Lib_IntVector_Intrinsics_vec256 v15 = v7___0;
        k[0U] = v0;
        k[1U] = v8;
        k[2U] = v1;
        k[3U] = v9;
        k[4U] = v2;
        k[5U] = v10;
        k[6U] = v3;
        k[7U] = v11;
        k[8U] = v4;
        k[9U] = v12;
        k[10U] = v5;
        k[11U] = v13;
        k[12U] = v6;
        k[13U] = v14;
        k[14U] = v7;
        k[15U] = v15;
        for (uint32_t i = (uint32_t)0U; i < (uint32_t)16U; i++) {
            Lib_IntVector_Intrinsics_vec256
                x = Lib_IntVector_Intrinsics_vec256_load32_le(plain + i * (uint32_t)32U);
            Lib_IntVector_Intrinsics_vec256 y = Lib_IntVector_Intrinsics_vec256_xor(x, k[i]);
            Lib_IntVector_Intrinsics_vec256_store32_le(plain + i * (uint32_t)32U, y);
        }
        memcpy(uu____2, plain, rem * sizeof(uint8_t));
    }
}