/* 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 "Hacl_Chacha20_Vec256.h"

#include "internal/Hacl_Chacha20.h"
#include "libintvector.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);
    KRML_MAYBE_FOR16(i,
                     (uint32_t)0U,
                     (uint32_t)16U,
                     (uint32_t)1U,
                     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 };
    KRML_MAYBE_FOR4(i,
                    (uint32_t)0U,
                    (uint32_t)4U,
                    (uint32_t)1U,
                    uint32_t *os = ctx1;
                    uint32_t x = Hacl_Impl_Chacha20_Vec_chacha20_constants[i];
                    os[i] = x;);
    KRML_MAYBE_FOR8(i,
                    (uint32_t)0U,
                    (uint32_t)8U,
                    (uint32_t)1U,
                    uint32_t *os = ctx1 + (uint32_t)4U;
                    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;
    KRML_MAYBE_FOR3(i,
                    (uint32_t)0U,
                    (uint32_t)3U,
                    (uint32_t)1U,
                    uint32_t *os = ctx1 + (uint32_t)13U;
                    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;);
    KRML_MAYBE_FOR16(i,
                     (uint32_t)0U,
                     (uint32_t)16U,
                     (uint32_t)1U,
                     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)
{
    KRML_PRE_ALIGN(32)
    Lib_IntVector_Intrinsics_vec256 ctx[16U] KRML_POST_ALIGN(32) = { 0U };
    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;
        KRML_PRE_ALIGN(32)
        Lib_IntVector_Intrinsics_vec256 k[16U] KRML_POST_ALIGN(32) = { 0U };
        chacha20_core_256(k, ctx, i);
        Lib_IntVector_Intrinsics_vec256 st0 = k[0U];
        Lib_IntVector_Intrinsics_vec256 st1 = k[1U];
        Lib_IntVector_Intrinsics_vec256 st2 = k[2U];
        Lib_IntVector_Intrinsics_vec256 st3 = k[3U];
        Lib_IntVector_Intrinsics_vec256 st4 = k[4U];
        Lib_IntVector_Intrinsics_vec256 st5 = k[5U];
        Lib_IntVector_Intrinsics_vec256 st6 = k[6U];
        Lib_IntVector_Intrinsics_vec256 st7 = k[7U];
        Lib_IntVector_Intrinsics_vec256 st8 = k[8U];
        Lib_IntVector_Intrinsics_vec256 st9 = k[9U];
        Lib_IntVector_Intrinsics_vec256 st10 = k[10U];
        Lib_IntVector_Intrinsics_vec256 st11 = k[11U];
        Lib_IntVector_Intrinsics_vec256 st12 = k[12U];
        Lib_IntVector_Intrinsics_vec256 st13 = k[13U];
        Lib_IntVector_Intrinsics_vec256 st14 = k[14U];
        Lib_IntVector_Intrinsics_vec256 st15 = k[15U];
        Lib_IntVector_Intrinsics_vec256 v00 = st0;
        Lib_IntVector_Intrinsics_vec256 v16 = st1;
        Lib_IntVector_Intrinsics_vec256 v20 = st2;
        Lib_IntVector_Intrinsics_vec256 v30 = st3;
        Lib_IntVector_Intrinsics_vec256 v40 = st4;
        Lib_IntVector_Intrinsics_vec256 v50 = st5;
        Lib_IntVector_Intrinsics_vec256 v60 = st6;
        Lib_IntVector_Intrinsics_vec256 v70 = st7;
        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_0 = v0_;
        Lib_IntVector_Intrinsics_vec256 v1_0 = v1_;
        Lib_IntVector_Intrinsics_vec256 v2_0 = v2_;
        Lib_IntVector_Intrinsics_vec256 v3_0 = v3_;
        Lib_IntVector_Intrinsics_vec256 v4_0 = v4_;
        Lib_IntVector_Intrinsics_vec256 v5_0 = v5_;
        Lib_IntVector_Intrinsics_vec256 v6_0 = v6_;
        Lib_IntVector_Intrinsics_vec256 v7_0 = v7_;
        Lib_IntVector_Intrinsics_vec256
            v0_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v2_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v1_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v3_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v4_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v6_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v5_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256
            v7_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256 v0_10 = v0_1;
        Lib_IntVector_Intrinsics_vec256 v1_10 = v1_1;
        Lib_IntVector_Intrinsics_vec256 v2_10 = v2_1;
        Lib_IntVector_Intrinsics_vec256 v3_10 = v3_1;
        Lib_IntVector_Intrinsics_vec256 v4_10 = v4_1;
        Lib_IntVector_Intrinsics_vec256 v5_10 = v5_1;
        Lib_IntVector_Intrinsics_vec256 v6_10 = v6_1;
        Lib_IntVector_Intrinsics_vec256 v7_10 = v7_1;
        Lib_IntVector_Intrinsics_vec256
            v0_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0_10, v4_10);
        Lib_IntVector_Intrinsics_vec256
            v4_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0_10, v4_10);
        Lib_IntVector_Intrinsics_vec256
            v1_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1_10, v5_10);
        Lib_IntVector_Intrinsics_vec256
            v5_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1_10, v5_10);
        Lib_IntVector_Intrinsics_vec256
            v2_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2_10, v6_10);
        Lib_IntVector_Intrinsics_vec256
            v6_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2_10, v6_10);
        Lib_IntVector_Intrinsics_vec256
            v3_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3_10, v7_10);
        Lib_IntVector_Intrinsics_vec256
            v7_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3_10, v7_10);
        Lib_IntVector_Intrinsics_vec256 v0_20 = v0_2;
        Lib_IntVector_Intrinsics_vec256 v1_20 = v1_2;
        Lib_IntVector_Intrinsics_vec256 v2_20 = v2_2;
        Lib_IntVector_Intrinsics_vec256 v3_20 = v3_2;
        Lib_IntVector_Intrinsics_vec256 v4_20 = v4_2;
        Lib_IntVector_Intrinsics_vec256 v5_20 = v5_2;
        Lib_IntVector_Intrinsics_vec256 v6_20 = v6_2;
        Lib_IntVector_Intrinsics_vec256 v7_20 = v7_2;
        Lib_IntVector_Intrinsics_vec256 v0_3 = v0_20;
        Lib_IntVector_Intrinsics_vec256 v1_3 = v1_20;
        Lib_IntVector_Intrinsics_vec256 v2_3 = v2_20;
        Lib_IntVector_Intrinsics_vec256 v3_3 = v3_20;
        Lib_IntVector_Intrinsics_vec256 v4_3 = v4_20;
        Lib_IntVector_Intrinsics_vec256 v5_3 = v5_20;
        Lib_IntVector_Intrinsics_vec256 v6_3 = v6_20;
        Lib_IntVector_Intrinsics_vec256 v7_3 = v7_20;
        Lib_IntVector_Intrinsics_vec256 v0 = v0_3;
        Lib_IntVector_Intrinsics_vec256 v1 = v2_3;
        Lib_IntVector_Intrinsics_vec256 v2 = v1_3;
        Lib_IntVector_Intrinsics_vec256 v3 = v3_3;
        Lib_IntVector_Intrinsics_vec256 v4 = v4_3;
        Lib_IntVector_Intrinsics_vec256 v5 = v6_3;
        Lib_IntVector_Intrinsics_vec256 v6 = v5_3;
        Lib_IntVector_Intrinsics_vec256 v7 = v7_3;
        Lib_IntVector_Intrinsics_vec256 v01 = st8;
        Lib_IntVector_Intrinsics_vec256 v110 = st9;
        Lib_IntVector_Intrinsics_vec256 v21 = st10;
        Lib_IntVector_Intrinsics_vec256 v31 = st11;
        Lib_IntVector_Intrinsics_vec256 v41 = st12;
        Lib_IntVector_Intrinsics_vec256 v51 = st13;
        Lib_IntVector_Intrinsics_vec256 v61 = st14;
        Lib_IntVector_Intrinsics_vec256 v71 = st15;
        Lib_IntVector_Intrinsics_vec256
            v0_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v1_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v2_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v3_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v4_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v5_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v6_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v61, v71);
        Lib_IntVector_Intrinsics_vec256
            v7_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v61, v71);
        Lib_IntVector_Intrinsics_vec256 v0_5 = v0_4;
        Lib_IntVector_Intrinsics_vec256 v1_5 = v1_4;
        Lib_IntVector_Intrinsics_vec256 v2_5 = v2_4;
        Lib_IntVector_Intrinsics_vec256 v3_5 = v3_4;
        Lib_IntVector_Intrinsics_vec256 v4_5 = v4_4;
        Lib_IntVector_Intrinsics_vec256 v5_5 = v5_4;
        Lib_IntVector_Intrinsics_vec256 v6_5 = v6_4;
        Lib_IntVector_Intrinsics_vec256 v7_5 = v7_4;
        Lib_IntVector_Intrinsics_vec256
            v0_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_5, v2_5);
        Lib_IntVector_Intrinsics_vec256
            v2_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_5, v2_5);
        Lib_IntVector_Intrinsics_vec256
            v1_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_5, v3_5);
        Lib_IntVector_Intrinsics_vec256
            v3_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_5, v3_5);
        Lib_IntVector_Intrinsics_vec256
            v4_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_5, v6_5);
        Lib_IntVector_Intrinsics_vec256
            v6_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_5, v6_5);
        Lib_IntVector_Intrinsics_vec256
            v5_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_5, v7_5);
        Lib_IntVector_Intrinsics_vec256
            v7_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_5, v7_5);
        Lib_IntVector_Intrinsics_vec256 v0_12 = v0_11;
        Lib_IntVector_Intrinsics_vec256 v1_12 = v1_11;
        Lib_IntVector_Intrinsics_vec256 v2_12 = v2_11;
        Lib_IntVector_Intrinsics_vec256 v3_12 = v3_11;
        Lib_IntVector_Intrinsics_vec256 v4_12 = v4_11;
        Lib_IntVector_Intrinsics_vec256 v5_12 = v5_11;
        Lib_IntVector_Intrinsics_vec256 v6_12 = v6_11;
        Lib_IntVector_Intrinsics_vec256 v7_12 = v7_11;
        Lib_IntVector_Intrinsics_vec256
            v0_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0_12, v4_12);
        Lib_IntVector_Intrinsics_vec256
            v4_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0_12, v4_12);
        Lib_IntVector_Intrinsics_vec256
            v1_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1_12, v5_12);
        Lib_IntVector_Intrinsics_vec256
            v5_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1_12, v5_12);
        Lib_IntVector_Intrinsics_vec256
            v2_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2_12, v6_12);
        Lib_IntVector_Intrinsics_vec256
            v6_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2_12, v6_12);
        Lib_IntVector_Intrinsics_vec256
            v3_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3_12, v7_12);
        Lib_IntVector_Intrinsics_vec256
            v7_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3_12, v7_12);
        Lib_IntVector_Intrinsics_vec256 v0_22 = v0_21;
        Lib_IntVector_Intrinsics_vec256 v1_22 = v1_21;
        Lib_IntVector_Intrinsics_vec256 v2_22 = v2_21;
        Lib_IntVector_Intrinsics_vec256 v3_22 = v3_21;
        Lib_IntVector_Intrinsics_vec256 v4_22 = v4_21;
        Lib_IntVector_Intrinsics_vec256 v5_22 = v5_21;
        Lib_IntVector_Intrinsics_vec256 v6_22 = v6_21;
        Lib_IntVector_Intrinsics_vec256 v7_22 = v7_21;
        Lib_IntVector_Intrinsics_vec256 v0_6 = v0_22;
        Lib_IntVector_Intrinsics_vec256 v1_6 = v1_22;
        Lib_IntVector_Intrinsics_vec256 v2_6 = v2_22;
        Lib_IntVector_Intrinsics_vec256 v3_6 = v3_22;
        Lib_IntVector_Intrinsics_vec256 v4_6 = v4_22;
        Lib_IntVector_Intrinsics_vec256 v5_6 = v5_22;
        Lib_IntVector_Intrinsics_vec256 v6_6 = v6_22;
        Lib_IntVector_Intrinsics_vec256 v7_6 = v7_22;
        Lib_IntVector_Intrinsics_vec256 v8 = v0_6;
        Lib_IntVector_Intrinsics_vec256 v9 = v2_6;
        Lib_IntVector_Intrinsics_vec256 v10 = v1_6;
        Lib_IntVector_Intrinsics_vec256 v11 = v3_6;
        Lib_IntVector_Intrinsics_vec256 v12 = v4_6;
        Lib_IntVector_Intrinsics_vec256 v13 = v6_6;
        Lib_IntVector_Intrinsics_vec256 v14 = v5_6;
        Lib_IntVector_Intrinsics_vec256 v15 = v7_6;
        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;
        KRML_MAYBE_FOR16(i0,
                         (uint32_t)0U,
                         (uint32_t)16U,
                         (uint32_t)1U,
                         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));
        KRML_PRE_ALIGN(32)
        Lib_IntVector_Intrinsics_vec256 k[16U] KRML_POST_ALIGN(32) = { 0U };
        chacha20_core_256(k, ctx, nb);
        Lib_IntVector_Intrinsics_vec256 st0 = k[0U];
        Lib_IntVector_Intrinsics_vec256 st1 = k[1U];
        Lib_IntVector_Intrinsics_vec256 st2 = k[2U];
        Lib_IntVector_Intrinsics_vec256 st3 = k[3U];
        Lib_IntVector_Intrinsics_vec256 st4 = k[4U];
        Lib_IntVector_Intrinsics_vec256 st5 = k[5U];
        Lib_IntVector_Intrinsics_vec256 st6 = k[6U];
        Lib_IntVector_Intrinsics_vec256 st7 = k[7U];
        Lib_IntVector_Intrinsics_vec256 st8 = k[8U];
        Lib_IntVector_Intrinsics_vec256 st9 = k[9U];
        Lib_IntVector_Intrinsics_vec256 st10 = k[10U];
        Lib_IntVector_Intrinsics_vec256 st11 = k[11U];
        Lib_IntVector_Intrinsics_vec256 st12 = k[12U];
        Lib_IntVector_Intrinsics_vec256 st13 = k[13U];
        Lib_IntVector_Intrinsics_vec256 st14 = k[14U];
        Lib_IntVector_Intrinsics_vec256 st15 = k[15U];
        Lib_IntVector_Intrinsics_vec256 v00 = st0;
        Lib_IntVector_Intrinsics_vec256 v16 = st1;
        Lib_IntVector_Intrinsics_vec256 v20 = st2;
        Lib_IntVector_Intrinsics_vec256 v30 = st3;
        Lib_IntVector_Intrinsics_vec256 v40 = st4;
        Lib_IntVector_Intrinsics_vec256 v50 = st5;
        Lib_IntVector_Intrinsics_vec256 v60 = st6;
        Lib_IntVector_Intrinsics_vec256 v70 = st7;
        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_0 = v0_;
        Lib_IntVector_Intrinsics_vec256 v1_0 = v1_;
        Lib_IntVector_Intrinsics_vec256 v2_0 = v2_;
        Lib_IntVector_Intrinsics_vec256 v3_0 = v3_;
        Lib_IntVector_Intrinsics_vec256 v4_0 = v4_;
        Lib_IntVector_Intrinsics_vec256 v5_0 = v5_;
        Lib_IntVector_Intrinsics_vec256 v6_0 = v6_;
        Lib_IntVector_Intrinsics_vec256 v7_0 = v7_;
        Lib_IntVector_Intrinsics_vec256
            v0_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v2_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v1_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v3_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v4_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v6_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v5_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256
            v7_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256 v0_10 = v0_1;
        Lib_IntVector_Intrinsics_vec256 v1_10 = v1_1;
        Lib_IntVector_Intrinsics_vec256 v2_10 = v2_1;
        Lib_IntVector_Intrinsics_vec256 v3_10 = v3_1;
        Lib_IntVector_Intrinsics_vec256 v4_10 = v4_1;
        Lib_IntVector_Intrinsics_vec256 v5_10 = v5_1;
        Lib_IntVector_Intrinsics_vec256 v6_10 = v6_1;
        Lib_IntVector_Intrinsics_vec256 v7_10 = v7_1;
        Lib_IntVector_Intrinsics_vec256
            v0_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0_10, v4_10);
        Lib_IntVector_Intrinsics_vec256
            v4_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0_10, v4_10);
        Lib_IntVector_Intrinsics_vec256
            v1_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1_10, v5_10);
        Lib_IntVector_Intrinsics_vec256
            v5_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1_10, v5_10);
        Lib_IntVector_Intrinsics_vec256
            v2_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2_10, v6_10);
        Lib_IntVector_Intrinsics_vec256
            v6_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2_10, v6_10);
        Lib_IntVector_Intrinsics_vec256
            v3_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3_10, v7_10);
        Lib_IntVector_Intrinsics_vec256
            v7_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3_10, v7_10);
        Lib_IntVector_Intrinsics_vec256 v0_20 = v0_2;
        Lib_IntVector_Intrinsics_vec256 v1_20 = v1_2;
        Lib_IntVector_Intrinsics_vec256 v2_20 = v2_2;
        Lib_IntVector_Intrinsics_vec256 v3_20 = v3_2;
        Lib_IntVector_Intrinsics_vec256 v4_20 = v4_2;
        Lib_IntVector_Intrinsics_vec256 v5_20 = v5_2;
        Lib_IntVector_Intrinsics_vec256 v6_20 = v6_2;
        Lib_IntVector_Intrinsics_vec256 v7_20 = v7_2;
        Lib_IntVector_Intrinsics_vec256 v0_3 = v0_20;
        Lib_IntVector_Intrinsics_vec256 v1_3 = v1_20;
        Lib_IntVector_Intrinsics_vec256 v2_3 = v2_20;
        Lib_IntVector_Intrinsics_vec256 v3_3 = v3_20;
        Lib_IntVector_Intrinsics_vec256 v4_3 = v4_20;
        Lib_IntVector_Intrinsics_vec256 v5_3 = v5_20;
        Lib_IntVector_Intrinsics_vec256 v6_3 = v6_20;
        Lib_IntVector_Intrinsics_vec256 v7_3 = v7_20;
        Lib_IntVector_Intrinsics_vec256 v0 = v0_3;
        Lib_IntVector_Intrinsics_vec256 v1 = v2_3;
        Lib_IntVector_Intrinsics_vec256 v2 = v1_3;
        Lib_IntVector_Intrinsics_vec256 v3 = v3_3;
        Lib_IntVector_Intrinsics_vec256 v4 = v4_3;
        Lib_IntVector_Intrinsics_vec256 v5 = v6_3;
        Lib_IntVector_Intrinsics_vec256 v6 = v5_3;
        Lib_IntVector_Intrinsics_vec256 v7 = v7_3;
        Lib_IntVector_Intrinsics_vec256 v01 = st8;
        Lib_IntVector_Intrinsics_vec256 v110 = st9;
        Lib_IntVector_Intrinsics_vec256 v21 = st10;
        Lib_IntVector_Intrinsics_vec256 v31 = st11;
        Lib_IntVector_Intrinsics_vec256 v41 = st12;
        Lib_IntVector_Intrinsics_vec256 v51 = st13;
        Lib_IntVector_Intrinsics_vec256 v61 = st14;
        Lib_IntVector_Intrinsics_vec256 v71 = st15;
        Lib_IntVector_Intrinsics_vec256
            v0_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v1_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v2_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v3_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v4_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v5_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v6_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v61, v71);
        Lib_IntVector_Intrinsics_vec256
            v7_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v61, v71);
        Lib_IntVector_Intrinsics_vec256 v0_5 = v0_4;
        Lib_IntVector_Intrinsics_vec256 v1_5 = v1_4;
        Lib_IntVector_Intrinsics_vec256 v2_5 = v2_4;
        Lib_IntVector_Intrinsics_vec256 v3_5 = v3_4;
        Lib_IntVector_Intrinsics_vec256 v4_5 = v4_4;
        Lib_IntVector_Intrinsics_vec256 v5_5 = v5_4;
        Lib_IntVector_Intrinsics_vec256 v6_5 = v6_4;
        Lib_IntVector_Intrinsics_vec256 v7_5 = v7_4;
        Lib_IntVector_Intrinsics_vec256
            v0_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_5, v2_5);
        Lib_IntVector_Intrinsics_vec256
            v2_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_5, v2_5);
        Lib_IntVector_Intrinsics_vec256
            v1_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_5, v3_5);
        Lib_IntVector_Intrinsics_vec256
            v3_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_5, v3_5);
        Lib_IntVector_Intrinsics_vec256
            v4_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_5, v6_5);
        Lib_IntVector_Intrinsics_vec256
            v6_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_5, v6_5);
        Lib_IntVector_Intrinsics_vec256
            v5_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_5, v7_5);
        Lib_IntVector_Intrinsics_vec256
            v7_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_5, v7_5);
        Lib_IntVector_Intrinsics_vec256 v0_12 = v0_11;
        Lib_IntVector_Intrinsics_vec256 v1_12 = v1_11;
        Lib_IntVector_Intrinsics_vec256 v2_12 = v2_11;
        Lib_IntVector_Intrinsics_vec256 v3_12 = v3_11;
        Lib_IntVector_Intrinsics_vec256 v4_12 = v4_11;
        Lib_IntVector_Intrinsics_vec256 v5_12 = v5_11;
        Lib_IntVector_Intrinsics_vec256 v6_12 = v6_11;
        Lib_IntVector_Intrinsics_vec256 v7_12 = v7_11;
        Lib_IntVector_Intrinsics_vec256
            v0_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0_12, v4_12);
        Lib_IntVector_Intrinsics_vec256
            v4_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0_12, v4_12);
        Lib_IntVector_Intrinsics_vec256
            v1_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1_12, v5_12);
        Lib_IntVector_Intrinsics_vec256
            v5_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1_12, v5_12);
        Lib_IntVector_Intrinsics_vec256
            v2_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2_12, v6_12);
        Lib_IntVector_Intrinsics_vec256
            v6_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2_12, v6_12);
        Lib_IntVector_Intrinsics_vec256
            v3_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3_12, v7_12);
        Lib_IntVector_Intrinsics_vec256
            v7_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3_12, v7_12);
        Lib_IntVector_Intrinsics_vec256 v0_22 = v0_21;
        Lib_IntVector_Intrinsics_vec256 v1_22 = v1_21;
        Lib_IntVector_Intrinsics_vec256 v2_22 = v2_21;
        Lib_IntVector_Intrinsics_vec256 v3_22 = v3_21;
        Lib_IntVector_Intrinsics_vec256 v4_22 = v4_21;
        Lib_IntVector_Intrinsics_vec256 v5_22 = v5_21;
        Lib_IntVector_Intrinsics_vec256 v6_22 = v6_21;
        Lib_IntVector_Intrinsics_vec256 v7_22 = v7_21;
        Lib_IntVector_Intrinsics_vec256 v0_6 = v0_22;
        Lib_IntVector_Intrinsics_vec256 v1_6 = v1_22;
        Lib_IntVector_Intrinsics_vec256 v2_6 = v2_22;
        Lib_IntVector_Intrinsics_vec256 v3_6 = v3_22;
        Lib_IntVector_Intrinsics_vec256 v4_6 = v4_22;
        Lib_IntVector_Intrinsics_vec256 v5_6 = v5_22;
        Lib_IntVector_Intrinsics_vec256 v6_6 = v6_22;
        Lib_IntVector_Intrinsics_vec256 v7_6 = v7_22;
        Lib_IntVector_Intrinsics_vec256 v8 = v0_6;
        Lib_IntVector_Intrinsics_vec256 v9 = v2_6;
        Lib_IntVector_Intrinsics_vec256 v10 = v1_6;
        Lib_IntVector_Intrinsics_vec256 v11 = v3_6;
        Lib_IntVector_Intrinsics_vec256 v12 = v4_6;
        Lib_IntVector_Intrinsics_vec256 v13 = v6_6;
        Lib_IntVector_Intrinsics_vec256 v14 = v5_6;
        Lib_IntVector_Intrinsics_vec256 v15 = v7_6;
        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;
        KRML_MAYBE_FOR16(i,
                         (uint32_t)0U,
                         (uint32_t)16U,
                         (uint32_t)1U,
                         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)
{
    KRML_PRE_ALIGN(32)
    Lib_IntVector_Intrinsics_vec256 ctx[16U] KRML_POST_ALIGN(32) = { 0U };
    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;
        KRML_PRE_ALIGN(32)
        Lib_IntVector_Intrinsics_vec256 k[16U] KRML_POST_ALIGN(32) = { 0U };
        chacha20_core_256(k, ctx, i);
        Lib_IntVector_Intrinsics_vec256 st0 = k[0U];
        Lib_IntVector_Intrinsics_vec256 st1 = k[1U];
        Lib_IntVector_Intrinsics_vec256 st2 = k[2U];
        Lib_IntVector_Intrinsics_vec256 st3 = k[3U];
        Lib_IntVector_Intrinsics_vec256 st4 = k[4U];
        Lib_IntVector_Intrinsics_vec256 st5 = k[5U];
        Lib_IntVector_Intrinsics_vec256 st6 = k[6U];
        Lib_IntVector_Intrinsics_vec256 st7 = k[7U];
        Lib_IntVector_Intrinsics_vec256 st8 = k[8U];
        Lib_IntVector_Intrinsics_vec256 st9 = k[9U];
        Lib_IntVector_Intrinsics_vec256 st10 = k[10U];
        Lib_IntVector_Intrinsics_vec256 st11 = k[11U];
        Lib_IntVector_Intrinsics_vec256 st12 = k[12U];
        Lib_IntVector_Intrinsics_vec256 st13 = k[13U];
        Lib_IntVector_Intrinsics_vec256 st14 = k[14U];
        Lib_IntVector_Intrinsics_vec256 st15 = k[15U];
        Lib_IntVector_Intrinsics_vec256 v00 = st0;
        Lib_IntVector_Intrinsics_vec256 v16 = st1;
        Lib_IntVector_Intrinsics_vec256 v20 = st2;
        Lib_IntVector_Intrinsics_vec256 v30 = st3;
        Lib_IntVector_Intrinsics_vec256 v40 = st4;
        Lib_IntVector_Intrinsics_vec256 v50 = st5;
        Lib_IntVector_Intrinsics_vec256 v60 = st6;
        Lib_IntVector_Intrinsics_vec256 v70 = st7;
        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_0 = v0_;
        Lib_IntVector_Intrinsics_vec256 v1_0 = v1_;
        Lib_IntVector_Intrinsics_vec256 v2_0 = v2_;
        Lib_IntVector_Intrinsics_vec256 v3_0 = v3_;
        Lib_IntVector_Intrinsics_vec256 v4_0 = v4_;
        Lib_IntVector_Intrinsics_vec256 v5_0 = v5_;
        Lib_IntVector_Intrinsics_vec256 v6_0 = v6_;
        Lib_IntVector_Intrinsics_vec256 v7_0 = v7_;
        Lib_IntVector_Intrinsics_vec256
            v0_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v2_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v1_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v3_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v4_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v6_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v5_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256
            v7_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256 v0_10 = v0_1;
        Lib_IntVector_Intrinsics_vec256 v1_10 = v1_1;
        Lib_IntVector_Intrinsics_vec256 v2_10 = v2_1;
        Lib_IntVector_Intrinsics_vec256 v3_10 = v3_1;
        Lib_IntVector_Intrinsics_vec256 v4_10 = v4_1;
        Lib_IntVector_Intrinsics_vec256 v5_10 = v5_1;
        Lib_IntVector_Intrinsics_vec256 v6_10 = v6_1;
        Lib_IntVector_Intrinsics_vec256 v7_10 = v7_1;
        Lib_IntVector_Intrinsics_vec256
            v0_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0_10, v4_10);
        Lib_IntVector_Intrinsics_vec256
            v4_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0_10, v4_10);
        Lib_IntVector_Intrinsics_vec256
            v1_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1_10, v5_10);
        Lib_IntVector_Intrinsics_vec256
            v5_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1_10, v5_10);
        Lib_IntVector_Intrinsics_vec256
            v2_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2_10, v6_10);
        Lib_IntVector_Intrinsics_vec256
            v6_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2_10, v6_10);
        Lib_IntVector_Intrinsics_vec256
            v3_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3_10, v7_10);
        Lib_IntVector_Intrinsics_vec256
            v7_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3_10, v7_10);
        Lib_IntVector_Intrinsics_vec256 v0_20 = v0_2;
        Lib_IntVector_Intrinsics_vec256 v1_20 = v1_2;
        Lib_IntVector_Intrinsics_vec256 v2_20 = v2_2;
        Lib_IntVector_Intrinsics_vec256 v3_20 = v3_2;
        Lib_IntVector_Intrinsics_vec256 v4_20 = v4_2;
        Lib_IntVector_Intrinsics_vec256 v5_20 = v5_2;
        Lib_IntVector_Intrinsics_vec256 v6_20 = v6_2;
        Lib_IntVector_Intrinsics_vec256 v7_20 = v7_2;
        Lib_IntVector_Intrinsics_vec256 v0_3 = v0_20;
        Lib_IntVector_Intrinsics_vec256 v1_3 = v1_20;
        Lib_IntVector_Intrinsics_vec256 v2_3 = v2_20;
        Lib_IntVector_Intrinsics_vec256 v3_3 = v3_20;
        Lib_IntVector_Intrinsics_vec256 v4_3 = v4_20;
        Lib_IntVector_Intrinsics_vec256 v5_3 = v5_20;
        Lib_IntVector_Intrinsics_vec256 v6_3 = v6_20;
        Lib_IntVector_Intrinsics_vec256 v7_3 = v7_20;
        Lib_IntVector_Intrinsics_vec256 v0 = v0_3;
        Lib_IntVector_Intrinsics_vec256 v1 = v2_3;
        Lib_IntVector_Intrinsics_vec256 v2 = v1_3;
        Lib_IntVector_Intrinsics_vec256 v3 = v3_3;
        Lib_IntVector_Intrinsics_vec256 v4 = v4_3;
        Lib_IntVector_Intrinsics_vec256 v5 = v6_3;
        Lib_IntVector_Intrinsics_vec256 v6 = v5_3;
        Lib_IntVector_Intrinsics_vec256 v7 = v7_3;
        Lib_IntVector_Intrinsics_vec256 v01 = st8;
        Lib_IntVector_Intrinsics_vec256 v110 = st9;
        Lib_IntVector_Intrinsics_vec256 v21 = st10;
        Lib_IntVector_Intrinsics_vec256 v31 = st11;
        Lib_IntVector_Intrinsics_vec256 v41 = st12;
        Lib_IntVector_Intrinsics_vec256 v51 = st13;
        Lib_IntVector_Intrinsics_vec256 v61 = st14;
        Lib_IntVector_Intrinsics_vec256 v71 = st15;
        Lib_IntVector_Intrinsics_vec256
            v0_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v1_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v2_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v3_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v4_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v5_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v6_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v61, v71);
        Lib_IntVector_Intrinsics_vec256
            v7_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v61, v71);
        Lib_IntVector_Intrinsics_vec256 v0_5 = v0_4;
        Lib_IntVector_Intrinsics_vec256 v1_5 = v1_4;
        Lib_IntVector_Intrinsics_vec256 v2_5 = v2_4;
        Lib_IntVector_Intrinsics_vec256 v3_5 = v3_4;
        Lib_IntVector_Intrinsics_vec256 v4_5 = v4_4;
        Lib_IntVector_Intrinsics_vec256 v5_5 = v5_4;
        Lib_IntVector_Intrinsics_vec256 v6_5 = v6_4;
        Lib_IntVector_Intrinsics_vec256 v7_5 = v7_4;
        Lib_IntVector_Intrinsics_vec256
            v0_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_5, v2_5);
        Lib_IntVector_Intrinsics_vec256
            v2_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_5, v2_5);
        Lib_IntVector_Intrinsics_vec256
            v1_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_5, v3_5);
        Lib_IntVector_Intrinsics_vec256
            v3_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_5, v3_5);
        Lib_IntVector_Intrinsics_vec256
            v4_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_5, v6_5);
        Lib_IntVector_Intrinsics_vec256
            v6_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_5, v6_5);
        Lib_IntVector_Intrinsics_vec256
            v5_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_5, v7_5);
        Lib_IntVector_Intrinsics_vec256
            v7_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_5, v7_5);
        Lib_IntVector_Intrinsics_vec256 v0_12 = v0_11;
        Lib_IntVector_Intrinsics_vec256 v1_12 = v1_11;
        Lib_IntVector_Intrinsics_vec256 v2_12 = v2_11;
        Lib_IntVector_Intrinsics_vec256 v3_12 = v3_11;
        Lib_IntVector_Intrinsics_vec256 v4_12 = v4_11;
        Lib_IntVector_Intrinsics_vec256 v5_12 = v5_11;
        Lib_IntVector_Intrinsics_vec256 v6_12 = v6_11;
        Lib_IntVector_Intrinsics_vec256 v7_12 = v7_11;
        Lib_IntVector_Intrinsics_vec256
            v0_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0_12, v4_12);
        Lib_IntVector_Intrinsics_vec256
            v4_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0_12, v4_12);
        Lib_IntVector_Intrinsics_vec256
            v1_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1_12, v5_12);
        Lib_IntVector_Intrinsics_vec256
            v5_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1_12, v5_12);
        Lib_IntVector_Intrinsics_vec256
            v2_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2_12, v6_12);
        Lib_IntVector_Intrinsics_vec256
            v6_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2_12, v6_12);
        Lib_IntVector_Intrinsics_vec256
            v3_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3_12, v7_12);
        Lib_IntVector_Intrinsics_vec256
            v7_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3_12, v7_12);
        Lib_IntVector_Intrinsics_vec256 v0_22 = v0_21;
        Lib_IntVector_Intrinsics_vec256 v1_22 = v1_21;
        Lib_IntVector_Intrinsics_vec256 v2_22 = v2_21;
        Lib_IntVector_Intrinsics_vec256 v3_22 = v3_21;
        Lib_IntVector_Intrinsics_vec256 v4_22 = v4_21;
        Lib_IntVector_Intrinsics_vec256 v5_22 = v5_21;
        Lib_IntVector_Intrinsics_vec256 v6_22 = v6_21;
        Lib_IntVector_Intrinsics_vec256 v7_22 = v7_21;
        Lib_IntVector_Intrinsics_vec256 v0_6 = v0_22;
        Lib_IntVector_Intrinsics_vec256 v1_6 = v1_22;
        Lib_IntVector_Intrinsics_vec256 v2_6 = v2_22;
        Lib_IntVector_Intrinsics_vec256 v3_6 = v3_22;
        Lib_IntVector_Intrinsics_vec256 v4_6 = v4_22;
        Lib_IntVector_Intrinsics_vec256 v5_6 = v5_22;
        Lib_IntVector_Intrinsics_vec256 v6_6 = v6_22;
        Lib_IntVector_Intrinsics_vec256 v7_6 = v7_22;
        Lib_IntVector_Intrinsics_vec256 v8 = v0_6;
        Lib_IntVector_Intrinsics_vec256 v9 = v2_6;
        Lib_IntVector_Intrinsics_vec256 v10 = v1_6;
        Lib_IntVector_Intrinsics_vec256 v11 = v3_6;
        Lib_IntVector_Intrinsics_vec256 v12 = v4_6;
        Lib_IntVector_Intrinsics_vec256 v13 = v6_6;
        Lib_IntVector_Intrinsics_vec256 v14 = v5_6;
        Lib_IntVector_Intrinsics_vec256 v15 = v7_6;
        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;
        KRML_MAYBE_FOR16(i0,
                         (uint32_t)0U,
                         (uint32_t)16U,
                         (uint32_t)1U,
                         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));
        KRML_PRE_ALIGN(32)
        Lib_IntVector_Intrinsics_vec256 k[16U] KRML_POST_ALIGN(32) = { 0U };
        chacha20_core_256(k, ctx, nb);
        Lib_IntVector_Intrinsics_vec256 st0 = k[0U];
        Lib_IntVector_Intrinsics_vec256 st1 = k[1U];
        Lib_IntVector_Intrinsics_vec256 st2 = k[2U];
        Lib_IntVector_Intrinsics_vec256 st3 = k[3U];
        Lib_IntVector_Intrinsics_vec256 st4 = k[4U];
        Lib_IntVector_Intrinsics_vec256 st5 = k[5U];
        Lib_IntVector_Intrinsics_vec256 st6 = k[6U];
        Lib_IntVector_Intrinsics_vec256 st7 = k[7U];
        Lib_IntVector_Intrinsics_vec256 st8 = k[8U];
        Lib_IntVector_Intrinsics_vec256 st9 = k[9U];
        Lib_IntVector_Intrinsics_vec256 st10 = k[10U];
        Lib_IntVector_Intrinsics_vec256 st11 = k[11U];
        Lib_IntVector_Intrinsics_vec256 st12 = k[12U];
        Lib_IntVector_Intrinsics_vec256 st13 = k[13U];
        Lib_IntVector_Intrinsics_vec256 st14 = k[14U];
        Lib_IntVector_Intrinsics_vec256 st15 = k[15U];
        Lib_IntVector_Intrinsics_vec256 v00 = st0;
        Lib_IntVector_Intrinsics_vec256 v16 = st1;
        Lib_IntVector_Intrinsics_vec256 v20 = st2;
        Lib_IntVector_Intrinsics_vec256 v30 = st3;
        Lib_IntVector_Intrinsics_vec256 v40 = st4;
        Lib_IntVector_Intrinsics_vec256 v50 = st5;
        Lib_IntVector_Intrinsics_vec256 v60 = st6;
        Lib_IntVector_Intrinsics_vec256 v70 = st7;
        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_0 = v0_;
        Lib_IntVector_Intrinsics_vec256 v1_0 = v1_;
        Lib_IntVector_Intrinsics_vec256 v2_0 = v2_;
        Lib_IntVector_Intrinsics_vec256 v3_0 = v3_;
        Lib_IntVector_Intrinsics_vec256 v4_0 = v4_;
        Lib_IntVector_Intrinsics_vec256 v5_0 = v5_;
        Lib_IntVector_Intrinsics_vec256 v6_0 = v6_;
        Lib_IntVector_Intrinsics_vec256 v7_0 = v7_;
        Lib_IntVector_Intrinsics_vec256
            v0_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v2_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_0, v2_0);
        Lib_IntVector_Intrinsics_vec256
            v1_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v3_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_0, v3_0);
        Lib_IntVector_Intrinsics_vec256
            v4_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v6_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_0, v6_0);
        Lib_IntVector_Intrinsics_vec256
            v5_1 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256
            v7_1 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_0, v7_0);
        Lib_IntVector_Intrinsics_vec256 v0_10 = v0_1;
        Lib_IntVector_Intrinsics_vec256 v1_10 = v1_1;
        Lib_IntVector_Intrinsics_vec256 v2_10 = v2_1;
        Lib_IntVector_Intrinsics_vec256 v3_10 = v3_1;
        Lib_IntVector_Intrinsics_vec256 v4_10 = v4_1;
        Lib_IntVector_Intrinsics_vec256 v5_10 = v5_1;
        Lib_IntVector_Intrinsics_vec256 v6_10 = v6_1;
        Lib_IntVector_Intrinsics_vec256 v7_10 = v7_1;
        Lib_IntVector_Intrinsics_vec256
            v0_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0_10, v4_10);
        Lib_IntVector_Intrinsics_vec256
            v4_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0_10, v4_10);
        Lib_IntVector_Intrinsics_vec256
            v1_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1_10, v5_10);
        Lib_IntVector_Intrinsics_vec256
            v5_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1_10, v5_10);
        Lib_IntVector_Intrinsics_vec256
            v2_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2_10, v6_10);
        Lib_IntVector_Intrinsics_vec256
            v6_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2_10, v6_10);
        Lib_IntVector_Intrinsics_vec256
            v3_2 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3_10, v7_10);
        Lib_IntVector_Intrinsics_vec256
            v7_2 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3_10, v7_10);
        Lib_IntVector_Intrinsics_vec256 v0_20 = v0_2;
        Lib_IntVector_Intrinsics_vec256 v1_20 = v1_2;
        Lib_IntVector_Intrinsics_vec256 v2_20 = v2_2;
        Lib_IntVector_Intrinsics_vec256 v3_20 = v3_2;
        Lib_IntVector_Intrinsics_vec256 v4_20 = v4_2;
        Lib_IntVector_Intrinsics_vec256 v5_20 = v5_2;
        Lib_IntVector_Intrinsics_vec256 v6_20 = v6_2;
        Lib_IntVector_Intrinsics_vec256 v7_20 = v7_2;
        Lib_IntVector_Intrinsics_vec256 v0_3 = v0_20;
        Lib_IntVector_Intrinsics_vec256 v1_3 = v1_20;
        Lib_IntVector_Intrinsics_vec256 v2_3 = v2_20;
        Lib_IntVector_Intrinsics_vec256 v3_3 = v3_20;
        Lib_IntVector_Intrinsics_vec256 v4_3 = v4_20;
        Lib_IntVector_Intrinsics_vec256 v5_3 = v5_20;
        Lib_IntVector_Intrinsics_vec256 v6_3 = v6_20;
        Lib_IntVector_Intrinsics_vec256 v7_3 = v7_20;
        Lib_IntVector_Intrinsics_vec256 v0 = v0_3;
        Lib_IntVector_Intrinsics_vec256 v1 = v2_3;
        Lib_IntVector_Intrinsics_vec256 v2 = v1_3;
        Lib_IntVector_Intrinsics_vec256 v3 = v3_3;
        Lib_IntVector_Intrinsics_vec256 v4 = v4_3;
        Lib_IntVector_Intrinsics_vec256 v5 = v6_3;
        Lib_IntVector_Intrinsics_vec256 v6 = v5_3;
        Lib_IntVector_Intrinsics_vec256 v7 = v7_3;
        Lib_IntVector_Intrinsics_vec256 v01 = st8;
        Lib_IntVector_Intrinsics_vec256 v110 = st9;
        Lib_IntVector_Intrinsics_vec256 v21 = st10;
        Lib_IntVector_Intrinsics_vec256 v31 = st11;
        Lib_IntVector_Intrinsics_vec256 v41 = st12;
        Lib_IntVector_Intrinsics_vec256 v51 = st13;
        Lib_IntVector_Intrinsics_vec256 v61 = st14;
        Lib_IntVector_Intrinsics_vec256 v71 = st15;
        Lib_IntVector_Intrinsics_vec256
            v0_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v1_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v01, v110);
        Lib_IntVector_Intrinsics_vec256
            v2_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v3_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v21, v31);
        Lib_IntVector_Intrinsics_vec256
            v4_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v5_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v41, v51);
        Lib_IntVector_Intrinsics_vec256
            v6_4 = Lib_IntVector_Intrinsics_vec256_interleave_low32(v61, v71);
        Lib_IntVector_Intrinsics_vec256
            v7_4 = Lib_IntVector_Intrinsics_vec256_interleave_high32(v61, v71);
        Lib_IntVector_Intrinsics_vec256 v0_5 = v0_4;
        Lib_IntVector_Intrinsics_vec256 v1_5 = v1_4;
        Lib_IntVector_Intrinsics_vec256 v2_5 = v2_4;
        Lib_IntVector_Intrinsics_vec256 v3_5 = v3_4;
        Lib_IntVector_Intrinsics_vec256 v4_5 = v4_4;
        Lib_IntVector_Intrinsics_vec256 v5_5 = v5_4;
        Lib_IntVector_Intrinsics_vec256 v6_5 = v6_4;
        Lib_IntVector_Intrinsics_vec256 v7_5 = v7_4;
        Lib_IntVector_Intrinsics_vec256
            v0_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v0_5, v2_5);
        Lib_IntVector_Intrinsics_vec256
            v2_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v0_5, v2_5);
        Lib_IntVector_Intrinsics_vec256
            v1_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v1_5, v3_5);
        Lib_IntVector_Intrinsics_vec256
            v3_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v1_5, v3_5);
        Lib_IntVector_Intrinsics_vec256
            v4_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v4_5, v6_5);
        Lib_IntVector_Intrinsics_vec256
            v6_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v4_5, v6_5);
        Lib_IntVector_Intrinsics_vec256
            v5_11 = Lib_IntVector_Intrinsics_vec256_interleave_low64(v5_5, v7_5);
        Lib_IntVector_Intrinsics_vec256
            v7_11 = Lib_IntVector_Intrinsics_vec256_interleave_high64(v5_5, v7_5);
        Lib_IntVector_Intrinsics_vec256 v0_12 = v0_11;
        Lib_IntVector_Intrinsics_vec256 v1_12 = v1_11;
        Lib_IntVector_Intrinsics_vec256 v2_12 = v2_11;
        Lib_IntVector_Intrinsics_vec256 v3_12 = v3_11;
        Lib_IntVector_Intrinsics_vec256 v4_12 = v4_11;
        Lib_IntVector_Intrinsics_vec256 v5_12 = v5_11;
        Lib_IntVector_Intrinsics_vec256 v6_12 = v6_11;
        Lib_IntVector_Intrinsics_vec256 v7_12 = v7_11;
        Lib_IntVector_Intrinsics_vec256
            v0_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v0_12, v4_12);
        Lib_IntVector_Intrinsics_vec256
            v4_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v0_12, v4_12);
        Lib_IntVector_Intrinsics_vec256
            v1_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v1_12, v5_12);
        Lib_IntVector_Intrinsics_vec256
            v5_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v1_12, v5_12);
        Lib_IntVector_Intrinsics_vec256
            v2_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v2_12, v6_12);
        Lib_IntVector_Intrinsics_vec256
            v6_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v2_12, v6_12);
        Lib_IntVector_Intrinsics_vec256
            v3_21 = Lib_IntVector_Intrinsics_vec256_interleave_low128(v3_12, v7_12);
        Lib_IntVector_Intrinsics_vec256
            v7_21 = Lib_IntVector_Intrinsics_vec256_interleave_high128(v3_12, v7_12);
        Lib_IntVector_Intrinsics_vec256 v0_22 = v0_21;
        Lib_IntVector_Intrinsics_vec256 v1_22 = v1_21;
        Lib_IntVector_Intrinsics_vec256 v2_22 = v2_21;
        Lib_IntVector_Intrinsics_vec256 v3_22 = v3_21;
        Lib_IntVector_Intrinsics_vec256 v4_22 = v4_21;
        Lib_IntVector_Intrinsics_vec256 v5_22 = v5_21;
        Lib_IntVector_Intrinsics_vec256 v6_22 = v6_21;
        Lib_IntVector_Intrinsics_vec256 v7_22 = v7_21;
        Lib_IntVector_Intrinsics_vec256 v0_6 = v0_22;
        Lib_IntVector_Intrinsics_vec256 v1_6 = v1_22;
        Lib_IntVector_Intrinsics_vec256 v2_6 = v2_22;
        Lib_IntVector_Intrinsics_vec256 v3_6 = v3_22;
        Lib_IntVector_Intrinsics_vec256 v4_6 = v4_22;
        Lib_IntVector_Intrinsics_vec256 v5_6 = v5_22;
        Lib_IntVector_Intrinsics_vec256 v6_6 = v6_22;
        Lib_IntVector_Intrinsics_vec256 v7_6 = v7_22;
        Lib_IntVector_Intrinsics_vec256 v8 = v0_6;
        Lib_IntVector_Intrinsics_vec256 v9 = v2_6;
        Lib_IntVector_Intrinsics_vec256 v10 = v1_6;
        Lib_IntVector_Intrinsics_vec256 v11 = v3_6;
        Lib_IntVector_Intrinsics_vec256 v12 = v4_6;
        Lib_IntVector_Intrinsics_vec256 v13 = v6_6;
        Lib_IntVector_Intrinsics_vec256 v14 = v5_6;
        Lib_IntVector_Intrinsics_vec256 v15 = v7_6;
        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;
        KRML_MAYBE_FOR16(i,
                         (uint32_t)0U,
                         (uint32_t)16U,
                         (uint32_t)1U,
                         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));
    }
}
