/* ====================================================================
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 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@openssl.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
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// Modifications Copyright 2017 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "starboard/shared/starboard/cryptography/software_aes.h"

#include "starboard/byte_swap.h"
#include "starboard/memory.h"
#include "starboard/types.h"

#pragma message "software_aes.cc is not meant for production use! Instead, use "
#pragma message "starboard/shared/stub/cryptography_* if you don't have "
#pragma message "hardware-accelerated AES support."

namespace starboard {
namespace shared {
namespace starboard {
namespace cryptography {

namespace {
inline uint32_t GETU32(const void *in) {
  uint32_t value;
  SbMemoryCopy(&value, in, sizeof(value));
  return SbByteSwapU32(value);
}

inline void PUTU32(void *out, uint32_t value) {
  value = SbByteSwapU32(value);
  SbMemoryCopy(out, &value, sizeof(value));
}

inline uint32_t GETU32_aligned(const void *in) {
  const char *alias = static_cast<const char*>(in);
  return SbByteSwapU32(*reinterpret_cast<const uint32_t*>(alias));
}

inline void PUTU32_aligned(void *in, uint32_t value) {
  char *alias = static_cast<char*>(in);
  *reinterpret_cast<uint32_t*>(alias) = SbByteSwapU32(value);
}

/* Te0[x] = S [x].[02, 01, 01, 03];
 * Te1[x] = S [x].[03, 02, 01, 01];
 * Te2[x] = S [x].[01, 03, 02, 01];
 * Te3[x] = S [x].[01, 01, 03, 02];
 *
 * Td0[x] = Si[x].[0e, 09, 0d, 0b];
 * Td1[x] = Si[x].[0b, 0e, 09, 0d];
 * Td2[x] = Si[x].[0d, 0b, 0e, 09];
 * Td3[x] = Si[x].[09, 0d, 0b, 0e];
 * Td4[x] = Si[x].[01]; */
static const uint32_t Te0[256] = {
    0xc66363a5U, 0xf87c7c84U, 0xee777799U, 0xf67b7b8dU, 0xfff2f20dU,
    0xd66b6bbdU, 0xde6f6fb1U, 0x91c5c554U, 0x60303050U, 0x02010103U,
    0xce6767a9U, 0x562b2b7dU, 0xe7fefe19U, 0xb5d7d762U, 0x4dababe6U,
    0xec76769aU, 0x8fcaca45U, 0x1f82829dU, 0x89c9c940U, 0xfa7d7d87U,
    0xeffafa15U, 0xb25959ebU, 0x8e4747c9U, 0xfbf0f00bU, 0x41adadecU,
    0xb3d4d467U, 0x5fa2a2fdU, 0x45afafeaU, 0x239c9cbfU, 0x53a4a4f7U,
    0xe4727296U, 0x9bc0c05bU, 0x75b7b7c2U, 0xe1fdfd1cU, 0x3d9393aeU,
    0x4c26266aU, 0x6c36365aU, 0x7e3f3f41U, 0xf5f7f702U, 0x83cccc4fU,
    0x6834345cU, 0x51a5a5f4U, 0xd1e5e534U, 0xf9f1f108U, 0xe2717193U,
    0xabd8d873U, 0x62313153U, 0x2a15153fU, 0x0804040cU, 0x95c7c752U,
    0x46232365U, 0x9dc3c35eU, 0x30181828U, 0x379696a1U, 0x0a05050fU,
    0x2f9a9ab5U, 0x0e070709U, 0x24121236U, 0x1b80809bU, 0xdfe2e23dU,
    0xcdebeb26U, 0x4e272769U, 0x7fb2b2cdU, 0xea75759fU, 0x1209091bU,
    0x1d83839eU, 0x582c2c74U, 0x341a1a2eU, 0x361b1b2dU, 0xdc6e6eb2U,
    0xb45a5aeeU, 0x5ba0a0fbU, 0xa45252f6U, 0x763b3b4dU, 0xb7d6d661U,
    0x7db3b3ceU, 0x5229297bU, 0xdde3e33eU, 0x5e2f2f71U, 0x13848497U,
    0xa65353f5U, 0xb9d1d168U, 0x00000000U, 0xc1eded2cU, 0x40202060U,
    0xe3fcfc1fU, 0x79b1b1c8U, 0xb65b5bedU, 0xd46a6abeU, 0x8dcbcb46U,
    0x67bebed9U, 0x7239394bU, 0x944a4adeU, 0x984c4cd4U, 0xb05858e8U,
    0x85cfcf4aU, 0xbbd0d06bU, 0xc5efef2aU, 0x4faaaae5U, 0xedfbfb16U,
    0x864343c5U, 0x9a4d4dd7U, 0x66333355U, 0x11858594U, 0x8a4545cfU,
    0xe9f9f910U, 0x04020206U, 0xfe7f7f81U, 0xa05050f0U, 0x783c3c44U,
    0x259f9fbaU, 0x4ba8a8e3U, 0xa25151f3U, 0x5da3a3feU, 0x804040c0U,
    0x058f8f8aU, 0x3f9292adU, 0x219d9dbcU, 0x70383848U, 0xf1f5f504U,
    0x63bcbcdfU, 0x77b6b6c1U, 0xafdada75U, 0x42212163U, 0x20101030U,
    0xe5ffff1aU, 0xfdf3f30eU, 0xbfd2d26dU, 0x81cdcd4cU, 0x180c0c14U,
    0x26131335U, 0xc3ecec2fU, 0xbe5f5fe1U, 0x359797a2U, 0x884444ccU,
    0x2e171739U, 0x93c4c457U, 0x55a7a7f2U, 0xfc7e7e82U, 0x7a3d3d47U,
    0xc86464acU, 0xba5d5de7U, 0x3219192bU, 0xe6737395U, 0xc06060a0U,
    0x19818198U, 0x9e4f4fd1U, 0xa3dcdc7fU, 0x44222266U, 0x542a2a7eU,
    0x3b9090abU, 0x0b888883U, 0x8c4646caU, 0xc7eeee29U, 0x6bb8b8d3U,
    0x2814143cU, 0xa7dede79U, 0xbc5e5ee2U, 0x160b0b1dU, 0xaddbdb76U,
    0xdbe0e03bU, 0x64323256U, 0x743a3a4eU, 0x140a0a1eU, 0x924949dbU,
    0x0c06060aU, 0x4824246cU, 0xb85c5ce4U, 0x9fc2c25dU, 0xbdd3d36eU,
    0x43acacefU, 0xc46262a6U, 0x399191a8U, 0x319595a4U, 0xd3e4e437U,
    0xf279798bU, 0xd5e7e732U, 0x8bc8c843U, 0x6e373759U, 0xda6d6db7U,
    0x018d8d8cU, 0xb1d5d564U, 0x9c4e4ed2U, 0x49a9a9e0U, 0xd86c6cb4U,
    0xac5656faU, 0xf3f4f407U, 0xcfeaea25U, 0xca6565afU, 0xf47a7a8eU,
    0x47aeaee9U, 0x10080818U, 0x6fbabad5U, 0xf0787888U, 0x4a25256fU,
    0x5c2e2e72U, 0x381c1c24U, 0x57a6a6f1U, 0x73b4b4c7U, 0x97c6c651U,
    0xcbe8e823U, 0xa1dddd7cU, 0xe874749cU, 0x3e1f1f21U, 0x964b4bddU,
    0x61bdbddcU, 0x0d8b8b86U, 0x0f8a8a85U, 0xe0707090U, 0x7c3e3e42U,
    0x71b5b5c4U, 0xcc6666aaU, 0x904848d8U, 0x06030305U, 0xf7f6f601U,
    0x1c0e0e12U, 0xc26161a3U, 0x6a35355fU, 0xae5757f9U, 0x69b9b9d0U,
    0x17868691U, 0x99c1c158U, 0x3a1d1d27U, 0x279e9eb9U, 0xd9e1e138U,
    0xebf8f813U, 0x2b9898b3U, 0x22111133U, 0xd26969bbU, 0xa9d9d970U,
    0x078e8e89U, 0x339494a7U, 0x2d9b9bb6U, 0x3c1e1e22U, 0x15878792U,
    0xc9e9e920U, 0x87cece49U, 0xaa5555ffU, 0x50282878U, 0xa5dfdf7aU,
    0x038c8c8fU, 0x59a1a1f8U, 0x09898980U, 0x1a0d0d17U, 0x65bfbfdaU,
    0xd7e6e631U, 0x844242c6U, 0xd06868b8U, 0x824141c3U, 0x299999b0U,
    0x5a2d2d77U, 0x1e0f0f11U, 0x7bb0b0cbU, 0xa85454fcU, 0x6dbbbbd6U,
    0x2c16163aU,
};
static const uint32_t Te1[256] = {
    0xa5c66363U, 0x84f87c7cU, 0x99ee7777U, 0x8df67b7bU, 0x0dfff2f2U,
    0xbdd66b6bU, 0xb1de6f6fU, 0x5491c5c5U, 0x50603030U, 0x03020101U,
    0xa9ce6767U, 0x7d562b2bU, 0x19e7fefeU, 0x62b5d7d7U, 0xe64dababU,
    0x9aec7676U, 0x458fcacaU, 0x9d1f8282U, 0x4089c9c9U, 0x87fa7d7dU,
    0x15effafaU, 0xebb25959U, 0xc98e4747U, 0x0bfbf0f0U, 0xec41adadU,
    0x67b3d4d4U, 0xfd5fa2a2U, 0xea45afafU, 0xbf239c9cU, 0xf753a4a4U,
    0x96e47272U, 0x5b9bc0c0U, 0xc275b7b7U, 0x1ce1fdfdU, 0xae3d9393U,
    0x6a4c2626U, 0x5a6c3636U, 0x417e3f3fU, 0x02f5f7f7U, 0x4f83ccccU,
    0x5c683434U, 0xf451a5a5U, 0x34d1e5e5U, 0x08f9f1f1U, 0x93e27171U,
    0x73abd8d8U, 0x53623131U, 0x3f2a1515U, 0x0c080404U, 0x5295c7c7U,
    0x65462323U, 0x5e9dc3c3U, 0x28301818U, 0xa1379696U, 0x0f0a0505U,
    0xb52f9a9aU, 0x090e0707U, 0x36241212U, 0x9b1b8080U, 0x3ddfe2e2U,
    0x26cdebebU, 0x694e2727U, 0xcd7fb2b2U, 0x9fea7575U, 0x1b120909U,
    0x9e1d8383U, 0x74582c2cU, 0x2e341a1aU, 0x2d361b1bU, 0xb2dc6e6eU,
    0xeeb45a5aU, 0xfb5ba0a0U, 0xf6a45252U, 0x4d763b3bU, 0x61b7d6d6U,
    0xce7db3b3U, 0x7b522929U, 0x3edde3e3U, 0x715e2f2fU, 0x97138484U,
    0xf5a65353U, 0x68b9d1d1U, 0x00000000U, 0x2cc1ededU, 0x60402020U,
    0x1fe3fcfcU, 0xc879b1b1U, 0xedb65b5bU, 0xbed46a6aU, 0x468dcbcbU,
    0xd967bebeU, 0x4b723939U, 0xde944a4aU, 0xd4984c4cU, 0xe8b05858U,
    0x4a85cfcfU, 0x6bbbd0d0U, 0x2ac5efefU, 0xe54faaaaU, 0x16edfbfbU,
    0xc5864343U, 0xd79a4d4dU, 0x55663333U, 0x94118585U, 0xcf8a4545U,
    0x10e9f9f9U, 0x06040202U, 0x81fe7f7fU, 0xf0a05050U, 0x44783c3cU,
    0xba259f9fU, 0xe34ba8a8U, 0xf3a25151U, 0xfe5da3a3U, 0xc0804040U,
    0x8a058f8fU, 0xad3f9292U, 0xbc219d9dU, 0x48703838U, 0x04f1f5f5U,
    0xdf63bcbcU, 0xc177b6b6U, 0x75afdadaU, 0x63422121U, 0x30201010U,
    0x1ae5ffffU, 0x0efdf3f3U, 0x6dbfd2d2U, 0x4c81cdcdU, 0x14180c0cU,
    0x35261313U, 0x2fc3ececU, 0xe1be5f5fU, 0xa2359797U, 0xcc884444U,
    0x392e1717U, 0x5793c4c4U, 0xf255a7a7U, 0x82fc7e7eU, 0x477a3d3dU,
    0xacc86464U, 0xe7ba5d5dU, 0x2b321919U, 0x95e67373U, 0xa0c06060U,
    0x98198181U, 0xd19e4f4fU, 0x7fa3dcdcU, 0x66442222U, 0x7e542a2aU,
    0xab3b9090U, 0x830b8888U, 0xca8c4646U, 0x29c7eeeeU, 0xd36bb8b8U,
    0x3c281414U, 0x79a7dedeU, 0xe2bc5e5eU, 0x1d160b0bU, 0x76addbdbU,
    0x3bdbe0e0U, 0x56643232U, 0x4e743a3aU, 0x1e140a0aU, 0xdb924949U,
    0x0a0c0606U, 0x6c482424U, 0xe4b85c5cU, 0x5d9fc2c2U, 0x6ebdd3d3U,
    0xef43acacU, 0xa6c46262U, 0xa8399191U, 0xa4319595U, 0x37d3e4e4U,
    0x8bf27979U, 0x32d5e7e7U, 0x438bc8c8U, 0x596e3737U, 0xb7da6d6dU,
    0x8c018d8dU, 0x64b1d5d5U, 0xd29c4e4eU, 0xe049a9a9U, 0xb4d86c6cU,
    0xfaac5656U, 0x07f3f4f4U, 0x25cfeaeaU, 0xafca6565U, 0x8ef47a7aU,
    0xe947aeaeU, 0x18100808U, 0xd56fbabaU, 0x88f07878U, 0x6f4a2525U,
    0x725c2e2eU, 0x24381c1cU, 0xf157a6a6U, 0xc773b4b4U, 0x5197c6c6U,
    0x23cbe8e8U, 0x7ca1ddddU, 0x9ce87474U, 0x213e1f1fU, 0xdd964b4bU,
    0xdc61bdbdU, 0x860d8b8bU, 0x850f8a8aU, 0x90e07070U, 0x427c3e3eU,
    0xc471b5b5U, 0xaacc6666U, 0xd8904848U, 0x05060303U, 0x01f7f6f6U,
    0x121c0e0eU, 0xa3c26161U, 0x5f6a3535U, 0xf9ae5757U, 0xd069b9b9U,
    0x91178686U, 0x5899c1c1U, 0x273a1d1dU, 0xb9279e9eU, 0x38d9e1e1U,
    0x13ebf8f8U, 0xb32b9898U, 0x33221111U, 0xbbd26969U, 0x70a9d9d9U,
    0x89078e8eU, 0xa7339494U, 0xb62d9b9bU, 0x223c1e1eU, 0x92158787U,
    0x20c9e9e9U, 0x4987ceceU, 0xffaa5555U, 0x78502828U, 0x7aa5dfdfU,
    0x8f038c8cU, 0xf859a1a1U, 0x80098989U, 0x171a0d0dU, 0xda65bfbfU,
    0x31d7e6e6U, 0xc6844242U, 0xb8d06868U, 0xc3824141U, 0xb0299999U,
    0x775a2d2dU, 0x111e0f0fU, 0xcb7bb0b0U, 0xfca85454U, 0xd66dbbbbU,
    0x3a2c1616U,
};
static const uint32_t Te2[256] = {
    0x63a5c663U, 0x7c84f87cU, 0x7799ee77U, 0x7b8df67bU, 0xf20dfff2U,
    0x6bbdd66bU, 0x6fb1de6fU, 0xc55491c5U, 0x30506030U, 0x01030201U,
    0x67a9ce67U, 0x2b7d562bU, 0xfe19e7feU, 0xd762b5d7U, 0xabe64dabU,
    0x769aec76U, 0xca458fcaU, 0x829d1f82U, 0xc94089c9U, 0x7d87fa7dU,
    0xfa15effaU, 0x59ebb259U, 0x47c98e47U, 0xf00bfbf0U, 0xadec41adU,
    0xd467b3d4U, 0xa2fd5fa2U, 0xafea45afU, 0x9cbf239cU, 0xa4f753a4U,
    0x7296e472U, 0xc05b9bc0U, 0xb7c275b7U, 0xfd1ce1fdU, 0x93ae3d93U,
    0x266a4c26U, 0x365a6c36U, 0x3f417e3fU, 0xf702f5f7U, 0xcc4f83ccU,
    0x345c6834U, 0xa5f451a5U, 0xe534d1e5U, 0xf108f9f1U, 0x7193e271U,
    0xd873abd8U, 0x31536231U, 0x153f2a15U, 0x040c0804U, 0xc75295c7U,
    0x23654623U, 0xc35e9dc3U, 0x18283018U, 0x96a13796U, 0x050f0a05U,
    0x9ab52f9aU, 0x07090e07U, 0x12362412U, 0x809b1b80U, 0xe23ddfe2U,
    0xeb26cdebU, 0x27694e27U, 0xb2cd7fb2U, 0x759fea75U, 0x091b1209U,
    0x839e1d83U, 0x2c74582cU, 0x1a2e341aU, 0x1b2d361bU, 0x6eb2dc6eU,
    0x5aeeb45aU, 0xa0fb5ba0U, 0x52f6a452U, 0x3b4d763bU, 0xd661b7d6U,
    0xb3ce7db3U, 0x297b5229U, 0xe33edde3U, 0x2f715e2fU, 0x84971384U,
    0x53f5a653U, 0xd168b9d1U, 0x00000000U, 0xed2cc1edU, 0x20604020U,
    0xfc1fe3fcU, 0xb1c879b1U, 0x5bedb65bU, 0x6abed46aU, 0xcb468dcbU,
    0xbed967beU, 0x394b7239U, 0x4ade944aU, 0x4cd4984cU, 0x58e8b058U,
    0xcf4a85cfU, 0xd06bbbd0U, 0xef2ac5efU, 0xaae54faaU, 0xfb16edfbU,
    0x43c58643U, 0x4dd79a4dU, 0x33556633U, 0x85941185U, 0x45cf8a45U,
    0xf910e9f9U, 0x02060402U, 0x7f81fe7fU, 0x50f0a050U, 0x3c44783cU,
    0x9fba259fU, 0xa8e34ba8U, 0x51f3a251U, 0xa3fe5da3U, 0x40c08040U,
    0x8f8a058fU, 0x92ad3f92U, 0x9dbc219dU, 0x38487038U, 0xf504f1f5U,
    0xbcdf63bcU, 0xb6c177b6U, 0xda75afdaU, 0x21634221U, 0x10302010U,
    0xff1ae5ffU, 0xf30efdf3U, 0xd26dbfd2U, 0xcd4c81cdU, 0x0c14180cU,
    0x13352613U, 0xec2fc3ecU, 0x5fe1be5fU, 0x97a23597U, 0x44cc8844U,
    0x17392e17U, 0xc45793c4U, 0xa7f255a7U, 0x7e82fc7eU, 0x3d477a3dU,
    0x64acc864U, 0x5de7ba5dU, 0x192b3219U, 0x7395e673U, 0x60a0c060U,
    0x81981981U, 0x4fd19e4fU, 0xdc7fa3dcU, 0x22664422U, 0x2a7e542aU,
    0x90ab3b90U, 0x88830b88U, 0x46ca8c46U, 0xee29c7eeU, 0xb8d36bb8U,
    0x143c2814U, 0xde79a7deU, 0x5ee2bc5eU, 0x0b1d160bU, 0xdb76addbU,
    0xe03bdbe0U, 0x32566432U, 0x3a4e743aU, 0x0a1e140aU, 0x49db9249U,
    0x060a0c06U, 0x246c4824U, 0x5ce4b85cU, 0xc25d9fc2U, 0xd36ebdd3U,
    0xacef43acU, 0x62a6c462U, 0x91a83991U, 0x95a43195U, 0xe437d3e4U,
    0x798bf279U, 0xe732d5e7U, 0xc8438bc8U, 0x37596e37U, 0x6db7da6dU,
    0x8d8c018dU, 0xd564b1d5U, 0x4ed29c4eU, 0xa9e049a9U, 0x6cb4d86cU,
    0x56faac56U, 0xf407f3f4U, 0xea25cfeaU, 0x65afca65U, 0x7a8ef47aU,
    0xaee947aeU, 0x08181008U, 0xbad56fbaU, 0x7888f078U, 0x256f4a25U,
    0x2e725c2eU, 0x1c24381cU, 0xa6f157a6U, 0xb4c773b4U, 0xc65197c6U,
    0xe823cbe8U, 0xdd7ca1ddU, 0x749ce874U, 0x1f213e1fU, 0x4bdd964bU,
    0xbddc61bdU, 0x8b860d8bU, 0x8a850f8aU, 0x7090e070U, 0x3e427c3eU,
    0xb5c471b5U, 0x66aacc66U, 0x48d89048U, 0x03050603U, 0xf601f7f6U,
    0x0e121c0eU, 0x61a3c261U, 0x355f6a35U, 0x57f9ae57U, 0xb9d069b9U,
    0x86911786U, 0xc15899c1U, 0x1d273a1dU, 0x9eb9279eU, 0xe138d9e1U,
    0xf813ebf8U, 0x98b32b98U, 0x11332211U, 0x69bbd269U, 0xd970a9d9U,
    0x8e89078eU, 0x94a73394U, 0x9bb62d9bU, 0x1e223c1eU, 0x87921587U,
    0xe920c9e9U, 0xce4987ceU, 0x55ffaa55U, 0x28785028U, 0xdf7aa5dfU,
    0x8c8f038cU, 0xa1f859a1U, 0x89800989U, 0x0d171a0dU, 0xbfda65bfU,
    0xe631d7e6U, 0x42c68442U, 0x68b8d068U, 0x41c38241U, 0x99b02999U,
    0x2d775a2dU, 0x0f111e0fU, 0xb0cb7bb0U, 0x54fca854U, 0xbbd66dbbU,
    0x163a2c16U,
};
static const uint32_t Te3[256] = {
    0x6363a5c6U, 0x7c7c84f8U, 0x777799eeU, 0x7b7b8df6U, 0xf2f20dffU,
    0x6b6bbdd6U, 0x6f6fb1deU, 0xc5c55491U, 0x30305060U, 0x01010302U,
    0x6767a9ceU, 0x2b2b7d56U, 0xfefe19e7U, 0xd7d762b5U, 0xababe64dU,
    0x76769aecU, 0xcaca458fU, 0x82829d1fU, 0xc9c94089U, 0x7d7d87faU,
    0xfafa15efU, 0x5959ebb2U, 0x4747c98eU, 0xf0f00bfbU, 0xadadec41U,
    0xd4d467b3U, 0xa2a2fd5fU, 0xafafea45U, 0x9c9cbf23U, 0xa4a4f753U,
    0x727296e4U, 0xc0c05b9bU, 0xb7b7c275U, 0xfdfd1ce1U, 0x9393ae3dU,
    0x26266a4cU, 0x36365a6cU, 0x3f3f417eU, 0xf7f702f5U, 0xcccc4f83U,
    0x34345c68U, 0xa5a5f451U, 0xe5e534d1U, 0xf1f108f9U, 0x717193e2U,
    0xd8d873abU, 0x31315362U, 0x15153f2aU, 0x04040c08U, 0xc7c75295U,
    0x23236546U, 0xc3c35e9dU, 0x18182830U, 0x9696a137U, 0x05050f0aU,
    0x9a9ab52fU, 0x0707090eU, 0x12123624U, 0x80809b1bU, 0xe2e23ddfU,
    0xebeb26cdU, 0x2727694eU, 0xb2b2cd7fU, 0x75759feaU, 0x09091b12U,
    0x83839e1dU, 0x2c2c7458U, 0x1a1a2e34U, 0x1b1b2d36U, 0x6e6eb2dcU,
    0x5a5aeeb4U, 0xa0a0fb5bU, 0x5252f6a4U, 0x3b3b4d76U, 0xd6d661b7U,
    0xb3b3ce7dU, 0x29297b52U, 0xe3e33eddU, 0x2f2f715eU, 0x84849713U,
    0x5353f5a6U, 0xd1d168b9U, 0x00000000U, 0xeded2cc1U, 0x20206040U,
    0xfcfc1fe3U, 0xb1b1c879U, 0x5b5bedb6U, 0x6a6abed4U, 0xcbcb468dU,
    0xbebed967U, 0x39394b72U, 0x4a4ade94U, 0x4c4cd498U, 0x5858e8b0U,
    0xcfcf4a85U, 0xd0d06bbbU, 0xefef2ac5U, 0xaaaae54fU, 0xfbfb16edU,
    0x4343c586U, 0x4d4dd79aU, 0x33335566U, 0x85859411U, 0x4545cf8aU,
    0xf9f910e9U, 0x02020604U, 0x7f7f81feU, 0x5050f0a0U, 0x3c3c4478U,
    0x9f9fba25U, 0xa8a8e34bU, 0x5151f3a2U, 0xa3a3fe5dU, 0x4040c080U,
    0x8f8f8a05U, 0x9292ad3fU, 0x9d9dbc21U, 0x38384870U, 0xf5f504f1U,
    0xbcbcdf63U, 0xb6b6c177U, 0xdada75afU, 0x21216342U, 0x10103020U,
    0xffff1ae5U, 0xf3f30efdU, 0xd2d26dbfU, 0xcdcd4c81U, 0x0c0c1418U,
    0x13133526U, 0xecec2fc3U, 0x5f5fe1beU, 0x9797a235U, 0x4444cc88U,
    0x1717392eU, 0xc4c45793U, 0xa7a7f255U, 0x7e7e82fcU, 0x3d3d477aU,
    0x6464acc8U, 0x5d5de7baU, 0x19192b32U, 0x737395e6U, 0x6060a0c0U,
    0x81819819U, 0x4f4fd19eU, 0xdcdc7fa3U, 0x22226644U, 0x2a2a7e54U,
    0x9090ab3bU, 0x8888830bU, 0x4646ca8cU, 0xeeee29c7U, 0xb8b8d36bU,
    0x14143c28U, 0xdede79a7U, 0x5e5ee2bcU, 0x0b0b1d16U, 0xdbdb76adU,
    0xe0e03bdbU, 0x32325664U, 0x3a3a4e74U, 0x0a0a1e14U, 0x4949db92U,
    0x06060a0cU, 0x24246c48U, 0x5c5ce4b8U, 0xc2c25d9fU, 0xd3d36ebdU,
    0xacacef43U, 0x6262a6c4U, 0x9191a839U, 0x9595a431U, 0xe4e437d3U,
    0x79798bf2U, 0xe7e732d5U, 0xc8c8438bU, 0x3737596eU, 0x6d6db7daU,
    0x8d8d8c01U, 0xd5d564b1U, 0x4e4ed29cU, 0xa9a9e049U, 0x6c6cb4d8U,
    0x5656faacU, 0xf4f407f3U, 0xeaea25cfU, 0x6565afcaU, 0x7a7a8ef4U,
    0xaeaee947U, 0x08081810U, 0xbabad56fU, 0x787888f0U, 0x25256f4aU,
    0x2e2e725cU, 0x1c1c2438U, 0xa6a6f157U, 0xb4b4c773U, 0xc6c65197U,
    0xe8e823cbU, 0xdddd7ca1U, 0x74749ce8U, 0x1f1f213eU, 0x4b4bdd96U,
    0xbdbddc61U, 0x8b8b860dU, 0x8a8a850fU, 0x707090e0U, 0x3e3e427cU,
    0xb5b5c471U, 0x6666aaccU, 0x4848d890U, 0x03030506U, 0xf6f601f7U,
    0x0e0e121cU, 0x6161a3c2U, 0x35355f6aU, 0x5757f9aeU, 0xb9b9d069U,
    0x86869117U, 0xc1c15899U, 0x1d1d273aU, 0x9e9eb927U, 0xe1e138d9U,
    0xf8f813ebU, 0x9898b32bU, 0x11113322U, 0x6969bbd2U, 0xd9d970a9U,
    0x8e8e8907U, 0x9494a733U, 0x9b9bb62dU, 0x1e1e223cU, 0x87879215U,
    0xe9e920c9U, 0xcece4987U, 0x5555ffaaU, 0x28287850U, 0xdfdf7aa5U,
    0x8c8c8f03U, 0xa1a1f859U, 0x89898009U, 0x0d0d171aU, 0xbfbfda65U,
    0xe6e631d7U, 0x4242c684U, 0x6868b8d0U, 0x4141c382U, 0x9999b029U,
    0x2d2d775aU, 0x0f0f111eU, 0xb0b0cb7bU, 0x5454fca8U, 0xbbbbd66dU,
    0x16163a2cU,
};
static const uint32_t Td0[256] = {
    0x51f4a750U, 0x7e416553U, 0x1a17a4c3U, 0x3a275e96U, 0x3bab6bcbU,
    0x1f9d45f1U, 0xacfa58abU, 0x4be30393U, 0x2030fa55U, 0xad766df6U,
    0x88cc7691U, 0xf5024c25U, 0x4fe5d7fcU, 0xc52acbd7U, 0x26354480U,
    0xb562a38fU, 0xdeb15a49U, 0x25ba1b67U, 0x45ea0e98U, 0x5dfec0e1U,
    0xc32f7502U, 0x814cf012U, 0x8d4697a3U, 0x6bd3f9c6U, 0x038f5fe7U,
    0x15929c95U, 0xbf6d7aebU, 0x955259daU, 0xd4be832dU, 0x587421d3U,
    0x49e06929U, 0x8ec9c844U, 0x75c2896aU, 0xf48e7978U, 0x99583e6bU,
    0x27b971ddU, 0xbee14fb6U, 0xf088ad17U, 0xc920ac66U, 0x7dce3ab4U,
    0x63df4a18U, 0xe51a3182U, 0x97513360U, 0x62537f45U, 0xb16477e0U,
    0xbb6bae84U, 0xfe81a01cU, 0xf9082b94U, 0x70486858U, 0x8f45fd19U,
    0x94de6c87U, 0x527bf8b7U, 0xab73d323U, 0x724b02e2U, 0xe31f8f57U,
    0x6655ab2aU, 0xb2eb2807U, 0x2fb5c203U, 0x86c57b9aU, 0xd33708a5U,
    0x302887f2U, 0x23bfa5b2U, 0x02036abaU, 0xed16825cU, 0x8acf1c2bU,
    0xa779b492U, 0xf307f2f0U, 0x4e69e2a1U, 0x65daf4cdU, 0x0605bed5U,
    0xd134621fU, 0xc4a6fe8aU, 0x342e539dU, 0xa2f355a0U, 0x058ae132U,
    0xa4f6eb75U, 0x0b83ec39U, 0x4060efaaU, 0x5e719f06U, 0xbd6e1051U,
    0x3e218af9U, 0x96dd063dU, 0xdd3e05aeU, 0x4de6bd46U, 0x91548db5U,
    0x71c45d05U, 0x0406d46fU, 0x605015ffU, 0x1998fb24U, 0xd6bde997U,
    0x894043ccU, 0x67d99e77U, 0xb0e842bdU, 0x07898b88U, 0xe7195b38U,
    0x79c8eedbU, 0xa17c0a47U, 0x7c420fe9U, 0xf8841ec9U, 0x00000000U,
    0x09808683U, 0x322bed48U, 0x1e1170acU, 0x6c5a724eU, 0xfd0efffbU,
    0x0f853856U, 0x3daed51eU, 0x362d3927U, 0x0a0fd964U, 0x685ca621U,
    0x9b5b54d1U, 0x24362e3aU, 0x0c0a67b1U, 0x9357e70fU, 0xb4ee96d2U,
    0x1b9b919eU, 0x80c0c54fU, 0x61dc20a2U, 0x5a774b69U, 0x1c121a16U,
    0xe293ba0aU, 0xc0a02ae5U, 0x3c22e043U, 0x121b171dU, 0x0e090d0bU,
    0xf28bc7adU, 0x2db6a8b9U, 0x141ea9c8U, 0x57f11985U, 0xaf75074cU,
    0xee99ddbbU, 0xa37f60fdU, 0xf701269fU, 0x5c72f5bcU, 0x44663bc5U,
    0x5bfb7e34U, 0x8b432976U, 0xcb23c6dcU, 0xb6edfc68U, 0xb8e4f163U,
    0xd731dccaU, 0x42638510U, 0x13972240U, 0x84c61120U, 0x854a247dU,
    0xd2bb3df8U, 0xaef93211U, 0xc729a16dU, 0x1d9e2f4bU, 0xdcb230f3U,
    0x0d8652ecU, 0x77c1e3d0U, 0x2bb3166cU, 0xa970b999U, 0x119448faU,
    0x47e96422U, 0xa8fc8cc4U, 0xa0f03f1aU, 0x567d2cd8U, 0x223390efU,
    0x87494ec7U, 0xd938d1c1U, 0x8ccaa2feU, 0x98d40b36U, 0xa6f581cfU,
    0xa57ade28U, 0xdab78e26U, 0x3fadbfa4U, 0x2c3a9de4U, 0x5078920dU,
    0x6a5fcc9bU, 0x547e4662U, 0xf68d13c2U, 0x90d8b8e8U, 0x2e39f75eU,
    0x82c3aff5U, 0x9f5d80beU, 0x69d0937cU, 0x6fd52da9U, 0xcf2512b3U,
    0xc8ac993bU, 0x10187da7U, 0xe89c636eU, 0xdb3bbb7bU, 0xcd267809U,
    0x6e5918f4U, 0xec9ab701U, 0x834f9aa8U, 0xe6956e65U, 0xaaffe67eU,
    0x21bccf08U, 0xef15e8e6U, 0xbae79bd9U, 0x4a6f36ceU, 0xea9f09d4U,
    0x29b07cd6U, 0x31a4b2afU, 0x2a3f2331U, 0xc6a59430U, 0x35a266c0U,
    0x744ebc37U, 0xfc82caa6U, 0xe090d0b0U, 0x33a7d815U, 0xf104984aU,
    0x41ecdaf7U, 0x7fcd500eU, 0x1791f62fU, 0x764dd68dU, 0x43efb04dU,
    0xccaa4d54U, 0xe49604dfU, 0x9ed1b5e3U, 0x4c6a881bU, 0xc12c1fb8U,
    0x4665517fU, 0x9d5eea04U, 0x018c355dU, 0xfa877473U, 0xfb0b412eU,
    0xb3671d5aU, 0x92dbd252U, 0xe9105633U, 0x6dd64713U, 0x9ad7618cU,
    0x37a10c7aU, 0x59f8148eU, 0xeb133c89U, 0xcea927eeU, 0xb761c935U,
    0xe11ce5edU, 0x7a47b13cU, 0x9cd2df59U, 0x55f2733fU, 0x1814ce79U,
    0x73c737bfU, 0x53f7cdeaU, 0x5ffdaa5bU, 0xdf3d6f14U, 0x7844db86U,
    0xcaaff381U, 0xb968c43eU, 0x3824342cU, 0xc2a3405fU, 0x161dc372U,
    0xbce2250cU, 0x283c498bU, 0xff0d9541U, 0x39a80171U, 0x080cb3deU,
    0xd8b4e49cU, 0x6456c190U, 0x7bcb8461U, 0xd532b670U, 0x486c5c74U,
    0xd0b85742U,
};
static const uint32_t Td1[256] = {
    0x5051f4a7U, 0x537e4165U, 0xc31a17a4U, 0x963a275eU, 0xcb3bab6bU,
    0xf11f9d45U, 0xabacfa58U, 0x934be303U, 0x552030faU, 0xf6ad766dU,
    0x9188cc76U, 0x25f5024cU, 0xfc4fe5d7U, 0xd7c52acbU, 0x80263544U,
    0x8fb562a3U, 0x49deb15aU, 0x6725ba1bU, 0x9845ea0eU, 0xe15dfec0U,
    0x02c32f75U, 0x12814cf0U, 0xa38d4697U, 0xc66bd3f9U, 0xe7038f5fU,
    0x9515929cU, 0xebbf6d7aU, 0xda955259U, 0x2dd4be83U, 0xd3587421U,
    0x2949e069U, 0x448ec9c8U, 0x6a75c289U, 0x78f48e79U, 0x6b99583eU,
    0xdd27b971U, 0xb6bee14fU, 0x17f088adU, 0x66c920acU, 0xb47dce3aU,
    0x1863df4aU, 0x82e51a31U, 0x60975133U, 0x4562537fU, 0xe0b16477U,
    0x84bb6baeU, 0x1cfe81a0U, 0x94f9082bU, 0x58704868U, 0x198f45fdU,
    0x8794de6cU, 0xb7527bf8U, 0x23ab73d3U, 0xe2724b02U, 0x57e31f8fU,
    0x2a6655abU, 0x07b2eb28U, 0x032fb5c2U, 0x9a86c57bU, 0xa5d33708U,
    0xf2302887U, 0xb223bfa5U, 0xba02036aU, 0x5ced1682U, 0x2b8acf1cU,
    0x92a779b4U, 0xf0f307f2U, 0xa14e69e2U, 0xcd65daf4U, 0xd50605beU,
    0x1fd13462U, 0x8ac4a6feU, 0x9d342e53U, 0xa0a2f355U, 0x32058ae1U,
    0x75a4f6ebU, 0x390b83ecU, 0xaa4060efU, 0x065e719fU, 0x51bd6e10U,
    0xf93e218aU, 0x3d96dd06U, 0xaedd3e05U, 0x464de6bdU, 0xb591548dU,
    0x0571c45dU, 0x6f0406d4U, 0xff605015U, 0x241998fbU, 0x97d6bde9U,
    0xcc894043U, 0x7767d99eU, 0xbdb0e842U, 0x8807898bU, 0x38e7195bU,
    0xdb79c8eeU, 0x47a17c0aU, 0xe97c420fU, 0xc9f8841eU, 0x00000000U,
    0x83098086U, 0x48322bedU, 0xac1e1170U, 0x4e6c5a72U, 0xfbfd0effU,
    0x560f8538U, 0x1e3daed5U, 0x27362d39U, 0x640a0fd9U, 0x21685ca6U,
    0xd19b5b54U, 0x3a24362eU, 0xb10c0a67U, 0x0f9357e7U, 0xd2b4ee96U,
    0x9e1b9b91U, 0x4f80c0c5U, 0xa261dc20U, 0x695a774bU, 0x161c121aU,
    0x0ae293baU, 0xe5c0a02aU, 0x433c22e0U, 0x1d121b17U, 0x0b0e090dU,
    0xadf28bc7U, 0xb92db6a8U, 0xc8141ea9U, 0x8557f119U, 0x4caf7507U,
    0xbbee99ddU, 0xfda37f60U, 0x9ff70126U, 0xbc5c72f5U, 0xc544663bU,
    0x345bfb7eU, 0x768b4329U, 0xdccb23c6U, 0x68b6edfcU, 0x63b8e4f1U,
    0xcad731dcU, 0x10426385U, 0x40139722U, 0x2084c611U, 0x7d854a24U,
    0xf8d2bb3dU, 0x11aef932U, 0x6dc729a1U, 0x4b1d9e2fU, 0xf3dcb230U,
    0xec0d8652U, 0xd077c1e3U, 0x6c2bb316U, 0x99a970b9U, 0xfa119448U,
    0x2247e964U, 0xc4a8fc8cU, 0x1aa0f03fU, 0xd8567d2cU, 0xef223390U,
    0xc787494eU, 0xc1d938d1U, 0xfe8ccaa2U, 0x3698d40bU, 0xcfa6f581U,
    0x28a57adeU, 0x26dab78eU, 0xa43fadbfU, 0xe42c3a9dU, 0x0d507892U,
    0x9b6a5fccU, 0x62547e46U, 0xc2f68d13U, 0xe890d8b8U, 0x5e2e39f7U,
    0xf582c3afU, 0xbe9f5d80U, 0x7c69d093U, 0xa96fd52dU, 0xb3cf2512U,
    0x3bc8ac99U, 0xa710187dU, 0x6ee89c63U, 0x7bdb3bbbU, 0x09cd2678U,
    0xf46e5918U, 0x01ec9ab7U, 0xa8834f9aU, 0x65e6956eU, 0x7eaaffe6U,
    0x0821bccfU, 0xe6ef15e8U, 0xd9bae79bU, 0xce4a6f36U, 0xd4ea9f09U,
    0xd629b07cU, 0xaf31a4b2U, 0x312a3f23U, 0x30c6a594U, 0xc035a266U,
    0x37744ebcU, 0xa6fc82caU, 0xb0e090d0U, 0x1533a7d8U, 0x4af10498U,
    0xf741ecdaU, 0x0e7fcd50U, 0x2f1791f6U, 0x8d764dd6U, 0x4d43efb0U,
    0x54ccaa4dU, 0xdfe49604U, 0xe39ed1b5U, 0x1b4c6a88U, 0xb8c12c1fU,
    0x7f466551U, 0x049d5eeaU, 0x5d018c35U, 0x73fa8774U, 0x2efb0b41U,
    0x5ab3671dU, 0x5292dbd2U, 0x33e91056U, 0x136dd647U, 0x8c9ad761U,
    0x7a37a10cU, 0x8e59f814U, 0x89eb133cU, 0xeecea927U, 0x35b761c9U,
    0xede11ce5U, 0x3c7a47b1U, 0x599cd2dfU, 0x3f55f273U, 0x791814ceU,
    0xbf73c737U, 0xea53f7cdU, 0x5b5ffdaaU, 0x14df3d6fU, 0x867844dbU,
    0x81caaff3U, 0x3eb968c4U, 0x2c382434U, 0x5fc2a340U, 0x72161dc3U,
    0x0cbce225U, 0x8b283c49U, 0x41ff0d95U, 0x7139a801U, 0xde080cb3U,
    0x9cd8b4e4U, 0x906456c1U, 0x617bcb84U, 0x70d532b6U, 0x74486c5cU,
    0x42d0b857U,
};
static const uint32_t Td2[256] = {
    0xa75051f4U, 0x65537e41U, 0xa4c31a17U, 0x5e963a27U, 0x6bcb3babU,
    0x45f11f9dU, 0x58abacfaU, 0x03934be3U, 0xfa552030U, 0x6df6ad76U,
    0x769188ccU, 0x4c25f502U, 0xd7fc4fe5U, 0xcbd7c52aU, 0x44802635U,
    0xa38fb562U, 0x5a49deb1U, 0x1b6725baU, 0x0e9845eaU, 0xc0e15dfeU,
    0x7502c32fU, 0xf012814cU, 0x97a38d46U, 0xf9c66bd3U, 0x5fe7038fU,
    0x9c951592U, 0x7aebbf6dU, 0x59da9552U, 0x832dd4beU, 0x21d35874U,
    0x692949e0U, 0xc8448ec9U, 0x896a75c2U, 0x7978f48eU, 0x3e6b9958U,
    0x71dd27b9U, 0x4fb6bee1U, 0xad17f088U, 0xac66c920U, 0x3ab47dceU,
    0x4a1863dfU, 0x3182e51aU, 0x33609751U, 0x7f456253U, 0x77e0b164U,
    0xae84bb6bU, 0xa01cfe81U, 0x2b94f908U, 0x68587048U, 0xfd198f45U,
    0x6c8794deU, 0xf8b7527bU, 0xd323ab73U, 0x02e2724bU, 0x8f57e31fU,
    0xab2a6655U, 0x2807b2ebU, 0xc2032fb5U, 0x7b9a86c5U, 0x08a5d337U,
    0x87f23028U, 0xa5b223bfU, 0x6aba0203U, 0x825ced16U, 0x1c2b8acfU,
    0xb492a779U, 0xf2f0f307U, 0xe2a14e69U, 0xf4cd65daU, 0xbed50605U,
    0x621fd134U, 0xfe8ac4a6U, 0x539d342eU, 0x55a0a2f3U, 0xe132058aU,
    0xeb75a4f6U, 0xec390b83U, 0xefaa4060U, 0x9f065e71U, 0x1051bd6eU,
    0x8af93e21U, 0x063d96ddU, 0x05aedd3eU, 0xbd464de6U, 0x8db59154U,
    0x5d0571c4U, 0xd46f0406U, 0x15ff6050U, 0xfb241998U, 0xe997d6bdU,
    0x43cc8940U, 0x9e7767d9U, 0x42bdb0e8U, 0x8b880789U, 0x5b38e719U,
    0xeedb79c8U, 0x0a47a17cU, 0x0fe97c42U, 0x1ec9f884U, 0x00000000U,
    0x86830980U, 0xed48322bU, 0x70ac1e11U, 0x724e6c5aU, 0xfffbfd0eU,
    0x38560f85U, 0xd51e3daeU, 0x3927362dU, 0xd9640a0fU, 0xa621685cU,
    0x54d19b5bU, 0x2e3a2436U, 0x67b10c0aU, 0xe70f9357U, 0x96d2b4eeU,
    0x919e1b9bU, 0xc54f80c0U, 0x20a261dcU, 0x4b695a77U, 0x1a161c12U,
    0xba0ae293U, 0x2ae5c0a0U, 0xe0433c22U, 0x171d121bU, 0x0d0b0e09U,
    0xc7adf28bU, 0xa8b92db6U, 0xa9c8141eU, 0x198557f1U, 0x074caf75U,
    0xddbbee99U, 0x60fda37fU, 0x269ff701U, 0xf5bc5c72U, 0x3bc54466U,
    0x7e345bfbU, 0x29768b43U, 0xc6dccb23U, 0xfc68b6edU, 0xf163b8e4U,
    0xdccad731U, 0x85104263U, 0x22401397U, 0x112084c6U, 0x247d854aU,
    0x3df8d2bbU, 0x3211aef9U, 0xa16dc729U, 0x2f4b1d9eU, 0x30f3dcb2U,
    0x52ec0d86U, 0xe3d077c1U, 0x166c2bb3U, 0xb999a970U, 0x48fa1194U,
    0x642247e9U, 0x8cc4a8fcU, 0x3f1aa0f0U, 0x2cd8567dU, 0x90ef2233U,
    0x4ec78749U, 0xd1c1d938U, 0xa2fe8ccaU, 0x0b3698d4U, 0x81cfa6f5U,
    0xde28a57aU, 0x8e26dab7U, 0xbfa43fadU, 0x9de42c3aU, 0x920d5078U,
    0xcc9b6a5fU, 0x4662547eU, 0x13c2f68dU, 0xb8e890d8U, 0xf75e2e39U,
    0xaff582c3U, 0x80be9f5dU, 0x937c69d0U, 0x2da96fd5U, 0x12b3cf25U,
    0x993bc8acU, 0x7da71018U, 0x636ee89cU, 0xbb7bdb3bU, 0x7809cd26U,
    0x18f46e59U, 0xb701ec9aU, 0x9aa8834fU, 0x6e65e695U, 0xe67eaaffU,
    0xcf0821bcU, 0xe8e6ef15U, 0x9bd9bae7U, 0x36ce4a6fU, 0x09d4ea9fU,
    0x7cd629b0U, 0xb2af31a4U, 0x23312a3fU, 0x9430c6a5U, 0x66c035a2U,
    0xbc37744eU, 0xcaa6fc82U, 0xd0b0e090U, 0xd81533a7U, 0x984af104U,
    0xdaf741ecU, 0x500e7fcdU, 0xf62f1791U, 0xd68d764dU, 0xb04d43efU,
    0x4d54ccaaU, 0x04dfe496U, 0xb5e39ed1U, 0x881b4c6aU, 0x1fb8c12cU,
    0x517f4665U, 0xea049d5eU, 0x355d018cU, 0x7473fa87U, 0x412efb0bU,
    0x1d5ab367U, 0xd25292dbU, 0x5633e910U, 0x47136dd6U, 0x618c9ad7U,
    0x0c7a37a1U, 0x148e59f8U, 0x3c89eb13U, 0x27eecea9U, 0xc935b761U,
    0xe5ede11cU, 0xb13c7a47U, 0xdf599cd2U, 0x733f55f2U, 0xce791814U,
    0x37bf73c7U, 0xcdea53f7U, 0xaa5b5ffdU, 0x6f14df3dU, 0xdb867844U,
    0xf381caafU, 0xc43eb968U, 0x342c3824U, 0x405fc2a3U, 0xc372161dU,
    0x250cbce2U, 0x498b283cU, 0x9541ff0dU, 0x017139a8U, 0xb3de080cU,
    0xe49cd8b4U, 0xc1906456U, 0x84617bcbU, 0xb670d532U, 0x5c74486cU,
    0x5742d0b8U,
};
static const uint32_t Td3[256] = {
    0xf4a75051U, 0x4165537eU, 0x17a4c31aU, 0x275e963aU, 0xab6bcb3bU,
    0x9d45f11fU, 0xfa58abacU, 0xe303934bU, 0x30fa5520U, 0x766df6adU,
    0xcc769188U, 0x024c25f5U, 0xe5d7fc4fU, 0x2acbd7c5U, 0x35448026U,
    0x62a38fb5U, 0xb15a49deU, 0xba1b6725U, 0xea0e9845U, 0xfec0e15dU,
    0x2f7502c3U, 0x4cf01281U, 0x4697a38dU, 0xd3f9c66bU, 0x8f5fe703U,
    0x929c9515U, 0x6d7aebbfU, 0x5259da95U, 0xbe832dd4U, 0x7421d358U,
    0xe0692949U, 0xc9c8448eU, 0xc2896a75U, 0x8e7978f4U, 0x583e6b99U,
    0xb971dd27U, 0xe14fb6beU, 0x88ad17f0U, 0x20ac66c9U, 0xce3ab47dU,
    0xdf4a1863U, 0x1a3182e5U, 0x51336097U, 0x537f4562U, 0x6477e0b1U,
    0x6bae84bbU, 0x81a01cfeU, 0x082b94f9U, 0x48685870U, 0x45fd198fU,
    0xde6c8794U, 0x7bf8b752U, 0x73d323abU, 0x4b02e272U, 0x1f8f57e3U,
    0x55ab2a66U, 0xeb2807b2U, 0xb5c2032fU, 0xc57b9a86U, 0x3708a5d3U,
    0x2887f230U, 0xbfa5b223U, 0x036aba02U, 0x16825cedU, 0xcf1c2b8aU,
    0x79b492a7U, 0x07f2f0f3U, 0x69e2a14eU, 0xdaf4cd65U, 0x05bed506U,
    0x34621fd1U, 0xa6fe8ac4U, 0x2e539d34U, 0xf355a0a2U, 0x8ae13205U,
    0xf6eb75a4U, 0x83ec390bU, 0x60efaa40U, 0x719f065eU, 0x6e1051bdU,
    0x218af93eU, 0xdd063d96U, 0x3e05aeddU, 0xe6bd464dU, 0x548db591U,
    0xc45d0571U, 0x06d46f04U, 0x5015ff60U, 0x98fb2419U, 0xbde997d6U,
    0x4043cc89U, 0xd99e7767U, 0xe842bdb0U, 0x898b8807U, 0x195b38e7U,
    0xc8eedb79U, 0x7c0a47a1U, 0x420fe97cU, 0x841ec9f8U, 0x00000000U,
    0x80868309U, 0x2bed4832U, 0x1170ac1eU, 0x5a724e6cU, 0x0efffbfdU,
    0x8538560fU, 0xaed51e3dU, 0x2d392736U, 0x0fd9640aU, 0x5ca62168U,
    0x5b54d19bU, 0x362e3a24U, 0x0a67b10cU, 0x57e70f93U, 0xee96d2b4U,
    0x9b919e1bU, 0xc0c54f80U, 0xdc20a261U, 0x774b695aU, 0x121a161cU,
    0x93ba0ae2U, 0xa02ae5c0U, 0x22e0433cU, 0x1b171d12U, 0x090d0b0eU,
    0x8bc7adf2U, 0xb6a8b92dU, 0x1ea9c814U, 0xf1198557U, 0x75074cafU,
    0x99ddbbeeU, 0x7f60fda3U, 0x01269ff7U, 0x72f5bc5cU, 0x663bc544U,
    0xfb7e345bU, 0x4329768bU, 0x23c6dccbU, 0xedfc68b6U, 0xe4f163b8U,
    0x31dccad7U, 0x63851042U, 0x97224013U, 0xc6112084U, 0x4a247d85U,
    0xbb3df8d2U, 0xf93211aeU, 0x29a16dc7U, 0x9e2f4b1dU, 0xb230f3dcU,
    0x8652ec0dU, 0xc1e3d077U, 0xb3166c2bU, 0x70b999a9U, 0x9448fa11U,
    0xe9642247U, 0xfc8cc4a8U, 0xf03f1aa0U, 0x7d2cd856U, 0x3390ef22U,
    0x494ec787U, 0x38d1c1d9U, 0xcaa2fe8cU, 0xd40b3698U, 0xf581cfa6U,
    0x7ade28a5U, 0xb78e26daU, 0xadbfa43fU, 0x3a9de42cU, 0x78920d50U,
    0x5fcc9b6aU, 0x7e466254U, 0x8d13c2f6U, 0xd8b8e890U, 0x39f75e2eU,
    0xc3aff582U, 0x5d80be9fU, 0xd0937c69U, 0xd52da96fU, 0x2512b3cfU,
    0xac993bc8U, 0x187da710U, 0x9c636ee8U, 0x3bbb7bdbU, 0x267809cdU,
    0x5918f46eU, 0x9ab701ecU, 0x4f9aa883U, 0x956e65e6U, 0xffe67eaaU,
    0xbccf0821U, 0x15e8e6efU, 0xe79bd9baU, 0x6f36ce4aU, 0x9f09d4eaU,
    0xb07cd629U, 0xa4b2af31U, 0x3f23312aU, 0xa59430c6U, 0xa266c035U,
    0x4ebc3774U, 0x82caa6fcU, 0x90d0b0e0U, 0xa7d81533U, 0x04984af1U,
    0xecdaf741U, 0xcd500e7fU, 0x91f62f17U, 0x4dd68d76U, 0xefb04d43U,
    0xaa4d54ccU, 0x9604dfe4U, 0xd1b5e39eU, 0x6a881b4cU, 0x2c1fb8c1U,
    0x65517f46U, 0x5eea049dU, 0x8c355d01U, 0x877473faU, 0x0b412efbU,
    0x671d5ab3U, 0xdbd25292U, 0x105633e9U, 0xd647136dU, 0xd7618c9aU,
    0xa10c7a37U, 0xf8148e59U, 0x133c89ebU, 0xa927eeceU, 0x61c935b7U,
    0x1ce5ede1U, 0x47b13c7aU, 0xd2df599cU, 0xf2733f55U, 0x14ce7918U,
    0xc737bf73U, 0xf7cdea53U, 0xfdaa5b5fU, 0x3d6f14dfU, 0x44db8678U,
    0xaff381caU, 0x68c43eb9U, 0x24342c38U, 0xa3405fc2U, 0x1dc37216U,
    0xe2250cbcU, 0x3c498b28U, 0x0d9541ffU, 0xa8017139U, 0x0cb3de08U,
    0xb4e49cd8U, 0x56c19064U, 0xcb84617bU, 0x32b670d5U, 0x6c5c7448U,
    0xb85742d0U,
};
static const uint8_t Td4[256] = {
    0x52U, 0x09U, 0x6aU, 0xd5U, 0x30U, 0x36U, 0xa5U, 0x38U, 0xbfU, 0x40U, 0xa3U,
    0x9eU, 0x81U, 0xf3U, 0xd7U, 0xfbU, 0x7cU, 0xe3U, 0x39U, 0x82U, 0x9bU, 0x2fU,
    0xffU, 0x87U, 0x34U, 0x8eU, 0x43U, 0x44U, 0xc4U, 0xdeU, 0xe9U, 0xcbU, 0x54U,
    0x7bU, 0x94U, 0x32U, 0xa6U, 0xc2U, 0x23U, 0x3dU, 0xeeU, 0x4cU, 0x95U, 0x0bU,
    0x42U, 0xfaU, 0xc3U, 0x4eU, 0x08U, 0x2eU, 0xa1U, 0x66U, 0x28U, 0xd9U, 0x24U,
    0xb2U, 0x76U, 0x5bU, 0xa2U, 0x49U, 0x6dU, 0x8bU, 0xd1U, 0x25U, 0x72U, 0xf8U,
    0xf6U, 0x64U, 0x86U, 0x68U, 0x98U, 0x16U, 0xd4U, 0xa4U, 0x5cU, 0xccU, 0x5dU,
    0x65U, 0xb6U, 0x92U, 0x6cU, 0x70U, 0x48U, 0x50U, 0xfdU, 0xedU, 0xb9U, 0xdaU,
    0x5eU, 0x15U, 0x46U, 0x57U, 0xa7U, 0x8dU, 0x9dU, 0x84U, 0x90U, 0xd8U, 0xabU,
    0x00U, 0x8cU, 0xbcU, 0xd3U, 0x0aU, 0xf7U, 0xe4U, 0x58U, 0x05U, 0xb8U, 0xb3U,
    0x45U, 0x06U, 0xd0U, 0x2cU, 0x1eU, 0x8fU, 0xcaU, 0x3fU, 0x0fU, 0x02U, 0xc1U,
    0xafU, 0xbdU, 0x03U, 0x01U, 0x13U, 0x8aU, 0x6bU, 0x3aU, 0x91U, 0x11U, 0x41U,
    0x4fU, 0x67U, 0xdcU, 0xeaU, 0x97U, 0xf2U, 0xcfU, 0xceU, 0xf0U, 0xb4U, 0xe6U,
    0x73U, 0x96U, 0xacU, 0x74U, 0x22U, 0xe7U, 0xadU, 0x35U, 0x85U, 0xe2U, 0xf9U,
    0x37U, 0xe8U, 0x1cU, 0x75U, 0xdfU, 0x6eU, 0x47U, 0xf1U, 0x1aU, 0x71U, 0x1dU,
    0x29U, 0xc5U, 0x89U, 0x6fU, 0xb7U, 0x62U, 0x0eU, 0xaaU, 0x18U, 0xbeU, 0x1bU,
    0xfcU, 0x56U, 0x3eU, 0x4bU, 0xc6U, 0xd2U, 0x79U, 0x20U, 0x9aU, 0xdbU, 0xc0U,
    0xfeU, 0x78U, 0xcdU, 0x5aU, 0xf4U, 0x1fU, 0xddU, 0xa8U, 0x33U, 0x88U, 0x07U,
    0xc7U, 0x31U, 0xb1U, 0x12U, 0x10U, 0x59U, 0x27U, 0x80U, 0xecU, 0x5fU, 0x60U,
    0x51U, 0x7fU, 0xa9U, 0x19U, 0xb5U, 0x4aU, 0x0dU, 0x2dU, 0xe5U, 0x7aU, 0x9fU,
    0x93U, 0xc9U, 0x9cU, 0xefU, 0xa0U, 0xe0U, 0x3bU, 0x4dU, 0xaeU, 0x2aU, 0xf5U,
    0xb0U, 0xc8U, 0xebU, 0xbbU, 0x3cU, 0x83U, 0x53U, 0x99U, 0x61U, 0x17U, 0x2bU,
    0x04U, 0x7eU, 0xbaU, 0x77U, 0xd6U, 0x26U, 0xe1U, 0x69U, 0x14U, 0x63U, 0x55U,
    0x21U, 0x0cU, 0x7dU,
};
static const uint32_t rcon[] = {
    0x01000000, 0x02000000, 0x04000000, 0x08000000, 0x10000000,
    0x20000000, 0x40000000, 0x80000000, 0x1B000000, 0x36000000,
    /* for 128-bit blocks, Rijndael never uses more than 10 rcon values */
};

inline void ctr128_inc(void* counter_pointer) {
  uint8_t* counter = reinterpret_cast<uint8_t*>(counter_pointer);
  uint32_t n = 16;
  uint8_t c;

  do {
    --n;
    c = counter[n];
    ++c;
    counter[n] = c;
    if (c)
      return;
  } while (n);
}

inline void ctr128_inc_aligned(void* counter_pointer) {
  uint8_t* counter = reinterpret_cast<uint8_t*>(counter_pointer);
  size_t *data, c, n;
  const union {
    uint32_t one;
    char little;
  } is_endian = {1};

  if (is_endian.little) {
    ctr128_inc(counter);
    return;
  }

  data = reinterpret_cast<size_t*>(counter_pointer);
  n = 16 / sizeof(size_t);
  do {
    --n;
    c = data[n];
    ++c;
    data[n] = c;
    if (c)
      return;
  } while (n);
}

/*
 * The input encrypted as though 128bit counter mode is being used.  The
 * extra state information to record how much of the 128bit block we have
 * used is contained in *num, and the encrypted counter is kept in
 * ecount_buf.  Both *num and ecount_buf must be initialised with zeros
 * before the first call to CRYPTO_ctr128_encrypt(). This algorithm assumes
 * that the counter is in the x lower bits of the IV (ivec), and that the
 * application has full control over overflow and the rest of the IV.  This
 * implementation takes NO responsability for checking that the counter
 * doesn't overflow into the rest of the IV when incremented.
 */
void CRYPTO_ctr128_encrypt(const void* in_pointer,
                           void* out_pointer,
                           size_t len,
                           const AES_KEY* key,
                           unsigned char ivec[16],
                           unsigned char ecount_buf[16],
                           unsigned int* num,
                           block128_f block) {
  const uint8_t* in = reinterpret_cast<const uint8_t*>(in_pointer);
  uint8_t* out = reinterpret_cast<uint8_t*>(out_pointer);

  uint32_t n;
  size_t l = 0;

  SB_DCHECK(in && out && key && ecount_buf && num);
  SB_DCHECK(*num < 16);

  n = *num;

  if (16 % sizeof(size_t) == 0) { /* always true actually */
    do {
      while (n && len) {
        *(out++) = *(in++) ^ ecount_buf[n];
        --len;
        n = (n + 1) % 16;
      }

      while (len >= 16) {
        (*block)(ivec, ecount_buf, key);
        ctr128_inc_aligned(ivec);
        for (; n < 16; n += sizeof(size_t))
          *reinterpret_cast<size_t*>(out + n) =
              *reinterpret_cast<const size_t*>(in + n) ^
              *reinterpret_cast<size_t*>(ecount_buf + n);
        len -= 16;
        out += 16;
        in += 16;
        n = 0;
      }
      if (len) {
        (*block)(ivec, ecount_buf, key);
        ctr128_inc_aligned(ivec);
        while (len--) {
          out[n] = in[n] ^ ecount_buf[n];
          ++n;
        }
      }
      *num = n;
      return;
    } while (0);
  }

  /* the rest would be commonly eliminated by x86* compiler */
  while (l < len) {
    if (n == 0) {
      (*block)(ivec, ecount_buf, key);
      ctr128_inc(ivec);
    }
    out[l] = in[l] ^ ecount_buf[n];
    ++l;
    n = (n + 1) % 16;
  }

  *num = n;
}

void CRYPTO_cbc128_encrypt(const void* in_pointer,
                           void* out_pointer,
                           size_t len,
                           const AES_KEY* key,
                           unsigned char ivec[16],
                           block128_f block) {
  const uint8_t* in = reinterpret_cast<const uint8_t*>(in_pointer);
  uint8_t* out = reinterpret_cast<uint8_t*>(out_pointer);
  size_t n;
  const unsigned char* iv = ivec;

  SB_DCHECK(in && out && key && ivec);

  while (len >= 16) {
    for (n = 0; n < 16; n += sizeof(size_t))
      *reinterpret_cast<size_t*>(out + n) =
          *reinterpret_cast<const size_t*>(in + n) ^
          *reinterpret_cast<const size_t*>(iv + n);
    (*block)(out, out, key);
    iv = out;
    len -= 16;
    in += 16;
    out += 16;
  }

  while (len) {
    for (n = 0; n < 16 && n < len; ++n)
      out[n] = in[n] ^ iv[n];
    for (; n < 16; ++n)
      out[n] = iv[n];
    (*block)(out, out, key);
    iv = out;
    if (len <= 16)
      break;
    len -= 16;
    in += 16;
    out += 16;
  }
  SbMemoryCopy(ivec, iv, 16);
}

void CRYPTO_cbc128_decrypt(const void* in_pointer,
                           void* out_pointer,
                           size_t len,
                           const AES_KEY* key,
                           unsigned char ivec[16],
                           block128_f block) {
  const uint8_t* in = reinterpret_cast<const uint8_t*>(in_pointer);
  uint8_t* out = reinterpret_cast<uint8_t*>(out_pointer);
  size_t n;
  union {
    size_t t[16 / sizeof(size_t)];
    unsigned char c[16];
  } tmp;

  SB_DCHECK(in && out && key && ivec);

  if (in != out) {
    const unsigned char* iv = ivec;

    if (16 % sizeof(size_t) == 0) { /* always true */
      while (len >= 16) {
        size_t* out_t = reinterpret_cast<size_t*>(out);
        const size_t* iv_t = reinterpret_cast<const size_t*>(iv);

        (*block)(in, out, key);
        for (n = 0; n < 16 / sizeof(size_t); n++)
          out_t[n] ^= iv_t[n];
        iv = in;
        len -= 16;
        in += 16;
        out += 16;
      }
    }
    SbMemoryCopy(ivec, iv, 16);
  } else {
    if (16 % sizeof(size_t) == 0) { /* always true */
      while (len >= 16) {
        size_t c, *out_t = reinterpret_cast<size_t *>(out);
        size_t* ivec_t = reinterpret_cast<size_t*>(ivec);
        const size_t* in_t = reinterpret_cast<const size_t*>(in);

        (*block)(in, tmp.c, key);
        for (n = 0; n < 16 / sizeof(size_t); n++) {
          c = in_t[n];
          out_t[n] = tmp.t[n] ^ ivec_t[n];
          ivec_t[n] = c;
        }
        len -= 16;
        in += 16;
        out += 16;
      }
    }
  }

  while (len) {
    unsigned char c;
    (*block)(in, tmp.c, key);
    for (n = 0; n < 16 && n < len; ++n) {
      c = in[n];
      out[n] = tmp.c[n] ^ ivec[n];
      ivec[n] = c;
    }
    if (len <= 16) {
      for (; n < 16; ++n)
        ivec[n] = in[n];
      break;
    }
    len -= 16;
    in += 16;
    out += 16;
  }
}
}  // namespace

int AES_set_encrypt_key(const void* key_pointer,
                        unsigned bits,
                        AES_KEY* aeskey) {
  const uint8_t* key = reinterpret_cast<const uint8_t*>(key_pointer);
  uint32_t* rk;
  int i = 0;
  uint32_t temp;
  if (!key || !aeskey) {
    return -1;
  }
  switch (bits) {
    case 128:
      aeskey->rounds = 10;
      break;
    case 192:
      aeskey->rounds = 12;
      break;
    case 256:
      aeskey->rounds = 14;
      break;
    default:
      return -2;
  }
  rk = aeskey->rd_key;
  rk[0] = GETU32(key);
  rk[1] = GETU32(key + 4);
  rk[2] = GETU32(key + 8);
  rk[3] = GETU32(key + 12);
  if (bits == 128) {
    while (1) {
      temp = rk[3];
      rk[4] = rk[0] ^ (Te2[(temp >> 16) & 0xff] & 0xff000000) ^
              (Te3[(temp >> 8) & 0xff] & 0x00ff0000) ^
              (Te0[(temp)&0xff] & 0x0000ff00) ^
              (Te1[(temp >> 24)] & 0x000000ff) ^ rcon[i];
      rk[5] = rk[1] ^ rk[4];
      rk[6] = rk[2] ^ rk[5];
      rk[7] = rk[3] ^ rk[6];
      if (++i == 10) {
        return 0;
      }
      rk += 4;
    }
  }
  rk[4] = GETU32(key + 16);
  rk[5] = GETU32(key + 20);
  if (bits == 192) {
    while (1) {
      temp = rk[5];
      rk[6] = rk[0] ^ (Te2[(temp >> 16) & 0xff] & 0xff000000) ^
              (Te3[(temp >> 8) & 0xff] & 0x00ff0000) ^
              (Te0[(temp)&0xff] & 0x0000ff00) ^
              (Te1[(temp >> 24)] & 0x000000ff) ^ rcon[i];
      rk[7] = rk[1] ^ rk[6];
      rk[8] = rk[2] ^ rk[7];
      rk[9] = rk[3] ^ rk[8];
      if (++i == 8) {
        return 0;
      }
      rk[10] = rk[4] ^ rk[9];
      rk[11] = rk[5] ^ rk[10];
      rk += 6;
    }
  }
  rk[6] = GETU32(key + 24);
  rk[7] = GETU32(key + 28);
  if (bits == 256) {
    while (1) {
      temp = rk[7];
      rk[8] = rk[0] ^ (Te2[(temp >> 16) & 0xff] & 0xff000000) ^
              (Te3[(temp >> 8) & 0xff] & 0x00ff0000) ^
              (Te0[(temp)&0xff] & 0x0000ff00) ^
              (Te1[(temp >> 24)] & 0x000000ff) ^ rcon[i];
      rk[9] = rk[1] ^ rk[8];
      rk[10] = rk[2] ^ rk[9];
      rk[11] = rk[3] ^ rk[10];
      if (++i == 7) {
        return 0;
      }
      temp = rk[11];
      rk[12] = rk[4] ^ (Te2[(temp >> 24)] & 0xff000000) ^
               (Te3[(temp >> 16) & 0xff] & 0x00ff0000) ^
               (Te0[(temp >> 8) & 0xff] & 0x0000ff00) ^
               (Te1[(temp)&0xff] & 0x000000ff);
      rk[13] = rk[5] ^ rk[12];
      rk[14] = rk[6] ^ rk[13];
      rk[15] = rk[7] ^ rk[14];
      rk += 8;
    }
  }
  return 0;
}

int AES_set_decrypt_key(const void* key_pointer,
                        unsigned bits,
                        AES_KEY* aeskey) {
  const uint8_t* key = reinterpret_cast<const uint8_t*>(key_pointer);
  uint32_t* rk;
  int i, j, status;
  uint32_t temp;
  /* first, start with an encryption schedule */
  status = AES_set_encrypt_key(key, bits, aeskey);
  if (status < 0) {
    return status;
  }
  rk = aeskey->rd_key;
  /* invert the order of the round keys: */
  for (i = 0, j = 4 * aeskey->rounds; i < j; i += 4, j -= 4) {
    temp = rk[i];
    rk[i] = rk[j];
    rk[j] = temp;
    temp = rk[i + 1];
    rk[i + 1] = rk[j + 1];
    rk[j + 1] = temp;
    temp = rk[i + 2];
    rk[i + 2] = rk[j + 2];
    rk[j + 2] = temp;
    temp = rk[i + 3];
    rk[i + 3] = rk[j + 3];
    rk[j + 3] = temp;
  }
  /* apply the inverse MixColumn transform to all round keys but the first and
   * the last: */
  for (i = 1; i < static_cast<int>(aeskey->rounds); i++) {
    rk += 4;
    rk[0] =
        Td0[Te1[(rk[0] >> 24)] & 0xff] ^ Td1[Te1[(rk[0] >> 16) & 0xff] & 0xff] ^
        Td2[Te1[(rk[0] >> 8) & 0xff] & 0xff] ^ Td3[Te1[(rk[0]) & 0xff] & 0xff];
    rk[1] =
        Td0[Te1[(rk[1] >> 24)] & 0xff] ^ Td1[Te1[(rk[1] >> 16) & 0xff] & 0xff] ^
        Td2[Te1[(rk[1] >> 8) & 0xff] & 0xff] ^ Td3[Te1[(rk[1]) & 0xff] & 0xff];
    rk[2] =
        Td0[Te1[(rk[2] >> 24)] & 0xff] ^ Td1[Te1[(rk[2] >> 16) & 0xff] & 0xff] ^
        Td2[Te1[(rk[2] >> 8) & 0xff] & 0xff] ^ Td3[Te1[(rk[2]) & 0xff] & 0xff];
    rk[3] =
        Td0[Te1[(rk[3] >> 24)] & 0xff] ^ Td1[Te1[(rk[3] >> 16) & 0xff] & 0xff] ^
        Td2[Te1[(rk[3] >> 8) & 0xff] & 0xff] ^ Td3[Te1[(rk[3]) & 0xff] & 0xff];
  }
  return 0;
}

void AES_encrypt(const void* in_pointer,
                 void* out_pointer,
                 const AES_KEY* key) {
  const uint8_t* in = reinterpret_cast<const uint8_t*>(in_pointer);
  uint8_t* out = reinterpret_cast<uint8_t*>(out_pointer);
  const uint32_t* rk;
  uint32_t s0, s1, s2, s3, t0, t1, t2, t3;
  int r;
  SB_DCHECK(in && out && key);
  rk = key->rd_key;
  /* map byte array block to cipher state
   * and add initial round key: */
  s0 = GETU32(in) ^ rk[0];
  s1 = GETU32(in + 4) ^ rk[1];
  s2 = GETU32(in + 8) ^ rk[2];
  s3 = GETU32(in + 12) ^ rk[3];
  /*
   * Nr - 1 full rounds:
   */
  r = key->rounds >> 1;
  for (;;) {
    t0 = Te0[(s0 >> 24)] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^
         Te3[(s3)&0xff] ^ rk[4];
    t1 = Te0[(s1 >> 24)] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^
         Te3[(s0)&0xff] ^ rk[5];
    t2 = Te0[(s2 >> 24)] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^
         Te3[(s1)&0xff] ^ rk[6];
    t3 = Te0[(s3 >> 24)] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^
         Te3[(s2)&0xff] ^ rk[7];
    rk += 8;
    if (--r == 0) {
      break;
    }
    s0 = Te0[(t0 >> 24)] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^
         Te3[(t3)&0xff] ^ rk[0];
    s1 = Te0[(t1 >> 24)] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^
         Te3[(t0)&0xff] ^ rk[1];
    s2 = Te0[(t2 >> 24)] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^
         Te3[(t1)&0xff] ^ rk[2];
    s3 = Te0[(t3 >> 24)] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^
         Te3[(t2)&0xff] ^ rk[3];
  }

  /*  apply last round and map cipher state to byte array block: */
  s0 = (Te2[(t0 >> 24)] & 0xff000000) ^ (Te3[(t1 >> 16) & 0xff] & 0x00ff0000) ^
       (Te0[(t2 >> 8) & 0xff] & 0x0000ff00) ^ (Te1[(t3)&0xff] & 0x000000ff) ^
       rk[0];
  PUTU32(out, s0);
  s1 = (Te2[(t1 >> 24)] & 0xff000000) ^ (Te3[(t2 >> 16) & 0xff] & 0x00ff0000) ^
       (Te0[(t3 >> 8) & 0xff] & 0x0000ff00) ^ (Te1[(t0)&0xff] & 0x000000ff) ^
       rk[1];
  PUTU32(out + 4, s1);
  s2 = (Te2[(t2 >> 24)] & 0xff000000) ^ (Te3[(t3 >> 16) & 0xff] & 0x00ff0000) ^
       (Te0[(t0 >> 8) & 0xff] & 0x0000ff00) ^ (Te1[(t1)&0xff] & 0x000000ff) ^
       rk[2];
  PUTU32(out + 8, s2);
  s3 = (Te2[(t3 >> 24)] & 0xff000000) ^ (Te3[(t0 >> 16) & 0xff] & 0x00ff0000) ^
       (Te0[(t1 >> 8) & 0xff] & 0x0000ff00) ^ (Te1[(t2)&0xff] & 0x000000ff) ^
       rk[3];
  PUTU32(out + 12, s3);
}

void AES_decrypt(const void* in_pointer,
                 void* out_pointer,
                 const AES_KEY* key) {
  const uint8_t* in = reinterpret_cast<const uint8_t*>(in_pointer);
  uint8_t* out = reinterpret_cast<uint8_t*>(out_pointer);
  const uint32_t* rk;
  uint32_t s0, s1, s2, s3, t0, t1, t2, t3;
  int r;
  SB_DCHECK(in && out && key);
  rk = key->rd_key;

  /* map byte array block to cipher state
   * and add initial round key: */
  s0 = GETU32(in) ^ rk[0];
  s1 = GETU32(in + 4) ^ rk[1];
  s2 = GETU32(in + 8) ^ rk[2];
  s3 = GETU32(in + 12) ^ rk[3];

  /*
   * Nr - 1 full rounds:
   */
  r = key->rounds >> 1;
  for (;;) {
    t0 = Td0[(s0 >> 24)] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >> 8) & 0xff] ^
         Td3[(s1)&0xff] ^ rk[4];
    t1 = Td0[(s1 >> 24)] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >> 8) & 0xff] ^
         Td3[(s2)&0xff] ^ rk[5];
    t2 = Td0[(s2 >> 24)] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >> 8) & 0xff] ^
         Td3[(s3)&0xff] ^ rk[6];
    t3 = Td0[(s3 >> 24)] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >> 8) & 0xff] ^
         Td3[(s0)&0xff] ^ rk[7];
    rk += 8;
    if (--r == 0) {
      break;
    }
    s0 = Td0[(t0 >> 24)] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >> 8) & 0xff] ^
         Td3[(t1)&0xff] ^ rk[0];
    s1 = Td0[(t1 >> 24)] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >> 8) & 0xff] ^
         Td3[(t2)&0xff] ^ rk[1];
    s2 = Td0[(t2 >> 24)] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >> 8) & 0xff] ^
         Td3[(t3)&0xff] ^ rk[2];
    s3 = Td0[(t3 >> 24)] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >> 8) & 0xff] ^
         Td3[(t0)&0xff] ^ rk[3];
  }

  /* apply last round and
   * map cipher state to byte array block: */
  s0 = ((uint32_t)Td4[(t0 >> 24)] << 24) ^
       ((uint32_t)Td4[(t3 >> 16) & 0xff] << 16) ^
       ((uint32_t)Td4[(t2 >> 8) & 0xff] << 8) ^ ((uint32_t)Td4[(t1)&0xff]) ^
       rk[0];
  PUTU32(out, s0);
  s1 = ((uint32_t)Td4[(t1 >> 24)] << 24) ^
       ((uint32_t)Td4[(t0 >> 16) & 0xff] << 16) ^
       ((uint32_t)Td4[(t3 >> 8) & 0xff] << 8) ^ ((uint32_t)Td4[(t2)&0xff]) ^
       rk[1];
  PUTU32(out + 4, s1);
  s2 = ((uint32_t)Td4[(t2 >> 24)] << 24) ^
       ((uint32_t)Td4[(t1 >> 16) & 0xff] << 16) ^
       ((uint32_t)Td4[(t0 >> 8) & 0xff] << 8) ^ ((uint32_t)Td4[(t3)&0xff]) ^
       rk[2];
  PUTU32(out + 8, s2);
  s3 = ((uint32_t)Td4[(t3 >> 24)] << 24) ^
       ((uint32_t)Td4[(t2 >> 16) & 0xff] << 16) ^
       ((uint32_t)Td4[(t1 >> 8) & 0xff] << 8) ^ ((uint32_t)Td4[(t0)&0xff]) ^
       rk[3];
  PUTU32(out + 12, s3);
}

void AES_ctr128_encrypt(const void* in,
                        void* out,
                        size_t len,
                        const AES_KEY* key,
                        uint8_t ivec[SB_AES_BLOCK_SIZE],
                        uint8_t ecount_buf[SB_AES_BLOCK_SIZE],
                        unsigned int* num) {
  CRYPTO_ctr128_encrypt(in, out, len, key, ivec, ecount_buf, num, AES_encrypt);
}

void AES_cbc_encrypt(const void* in,
                     void* out,
                     size_t len,
                     const AES_KEY* key,
                     uint8_t* ivec,
                     const int enc) {
  if (enc) {
    CRYPTO_cbc128_encrypt(in, out, len, key, ivec, AES_encrypt);
  } else {
    CRYPTO_cbc128_decrypt(in, out, len, key, ivec, AES_decrypt);
  }
}

// --- GCM -------------------------------------------------------------------

#define GCM_MUL(ctx, Xi) gcm_gmult_4bit((ctx)->Xi.u, (ctx)->Htable)
#define PACK(s) ((size_t)(s) << (sizeof(size_t) * 8 - 16))
#define REDUCE1BIT(V)                                                 \
  do {                                                                \
    if (sizeof(size_t) == 8) {                                        \
      uint64_t T = UINT64_C(0xe100000000000000) & (0 - ((V).lo & 1)); \
      (V).lo = ((V).hi << 63) | ((V).lo >> 1);                        \
      (V).hi = ((V).hi >> 1) ^ T;                                     \
    } else {                                                          \
      uint32_t T = 0xe1000000U & (0 - (uint32_t)((V).lo & 1));        \
      (V).lo = ((V).hi << 63) | ((V).lo >> 1);                        \
      (V).hi = ((V).hi >> 1) ^ ((uint64_t)T << 32);                   \
    }                                                                 \
  } while (0)

namespace {
const size_t rem_4bit[16] = {
    PACK(0x0000), PACK(0x1C20), PACK(0x3840), PACK(0x2460),
    PACK(0x7080), PACK(0x6CA0), PACK(0x48C0), PACK(0x54E0),
    PACK(0xE100), PACK(0xFD20), PACK(0xD940), PACK(0xC560),
    PACK(0x9180), PACK(0x8DA0), PACK(0xA9C0), PACK(0xB5E0)};

static void gcm_init_4bit(u128 Htable[16], uint64_t H[2]) {
  u128 V;

  Htable[0].hi = 0;
  Htable[0].lo = 0;
  V.hi = H[0];
  V.lo = H[1];

  Htable[8] = V;
  REDUCE1BIT(V);
  Htable[4] = V;
  REDUCE1BIT(V);
  Htable[2] = V;
  REDUCE1BIT(V);
  Htable[1] = V;
  Htable[3].hi = V.hi ^ Htable[2].hi, Htable[3].lo = V.lo ^ Htable[2].lo;
  V = Htable[4];
  Htable[5].hi = V.hi ^ Htable[1].hi, Htable[5].lo = V.lo ^ Htable[1].lo;
  Htable[6].hi = V.hi ^ Htable[2].hi, Htable[6].lo = V.lo ^ Htable[2].lo;
  Htable[7].hi = V.hi ^ Htable[3].hi, Htable[7].lo = V.lo ^ Htable[3].lo;
  V = Htable[8];
  Htable[9].hi = V.hi ^ Htable[1].hi, Htable[9].lo = V.lo ^ Htable[1].lo;
  Htable[10].hi = V.hi ^ Htable[2].hi, Htable[10].lo = V.lo ^ Htable[2].lo;
  Htable[11].hi = V.hi ^ Htable[3].hi, Htable[11].lo = V.lo ^ Htable[3].lo;
  Htable[12].hi = V.hi ^ Htable[4].hi, Htable[12].lo = V.lo ^ Htable[4].lo;
  Htable[13].hi = V.hi ^ Htable[5].hi, Htable[13].lo = V.lo ^ Htable[5].lo;
  Htable[14].hi = V.hi ^ Htable[6].hi, Htable[14].lo = V.lo ^ Htable[6].lo;
  Htable[15].hi = V.hi ^ Htable[7].hi, Htable[15].lo = V.lo ^ Htable[7].lo;
}

void gcm_gmult_4bit(uint64_t Xi[2], const u128 Htable[16]) {
  u128 Z;
  int cnt = 15;
  size_t rem, nlo, nhi;

  nlo = ((const uint8_t *)Xi)[15];
  nhi = nlo >> 4;
  nlo &= 0xf;

  Z.hi = Htable[nlo].hi;
  Z.lo = Htable[nlo].lo;

  while (1) {
    rem = (size_t)Z.lo & 0xf;
    Z.lo = (Z.hi << 60) | (Z.lo >> 4);
    Z.hi = (Z.hi >> 4);
    if (sizeof(size_t) == 8) {
      Z.hi ^= rem_4bit[rem];
    } else {
      Z.hi ^= (uint64_t)rem_4bit[rem] << 32;
    }

    Z.hi ^= Htable[nhi].hi;
    Z.lo ^= Htable[nhi].lo;

    if (--cnt < 0) {
      break;
    }

    nlo = ((const uint8_t *)Xi)[cnt];
    nhi = nlo >> 4;
    nlo &= 0xf;

    rem = (size_t)Z.lo & 0xf;
    Z.lo = (Z.hi << 60) | (Z.lo >> 4);
    Z.hi = (Z.hi >> 4);
    if (sizeof(size_t) == 8) {
      Z.hi ^= rem_4bit[rem];
    } else {
      Z.hi ^= (uint64_t)rem_4bit[rem] << 32;
    }

    Z.hi ^= Htable[nlo].hi;
    Z.lo ^= Htable[nlo].lo;
  }

  Xi[0] = SbByteSwapU64(Z.hi);
  Xi[1] = SbByteSwapU64(Z.lo);
}

/* Streamed gcm_mult_4bit, see CRYPTO_gcm128_[en|de]crypt for
 * details... Compiler-generated code doesn't seem to give any
 * performance improvement, at least not on x86[_64]. It's here
 * mostly as reference and a placeholder for possible future
 * non-trivial optimization[s]... */
void gcm_ghash_4bit(uint64_t Xi[2], const u128 Htable[16],
                    const uint8_t *inp, size_t len) {
  u128 Z;
  int cnt;
  size_t rem, nlo, nhi;

  do {
    cnt = 15;
    nlo = ((const uint8_t *)Xi)[15];
    nlo ^= inp[15];
    nhi = nlo >> 4;
    nlo &= 0xf;

    Z.hi = Htable[nlo].hi;
    Z.lo = Htable[nlo].lo;

    while (1) {
      rem = (size_t)Z.lo & 0xf;
      Z.lo = (Z.hi << 60) | (Z.lo >> 4);
      Z.hi = (Z.hi >> 4);
      if (sizeof(size_t) == 8) {
        Z.hi ^= rem_4bit[rem];
      } else {
        Z.hi ^= (uint64_t)rem_4bit[rem] << 32;
      }

      Z.hi ^= Htable[nhi].hi;
      Z.lo ^= Htable[nhi].lo;

      if (--cnt < 0) {
        break;
      }

      nlo = ((const uint8_t *)Xi)[cnt];
      nlo ^= inp[cnt];
      nhi = nlo >> 4;
      nlo &= 0xf;

      rem = (size_t)Z.lo & 0xf;
      Z.lo = (Z.hi << 60) | (Z.lo >> 4);
      Z.hi = (Z.hi >> 4);
      if (sizeof(size_t) == 8) {
        Z.hi ^= rem_4bit[rem];
      } else {
        Z.hi ^= (uint64_t)rem_4bit[rem] << 32;
      }

      Z.hi ^= Htable[nlo].hi;
      Z.lo ^= Htable[nlo].lo;
    }

    Xi[0] = SbByteSwapU64(Z.hi);
    Xi[1] = SbByteSwapU64(Z.lo);
  } while (inp += 16, len -= 16);
}
}  // namespace

void CRYPTO_ghash_init(gmult_func *out_mult, ghash_func *out_hash,
                       u128 *out_key, u128 out_table[16],
                       int *out_is_avx,
                       const uint8_t *gcm_key) {
  *out_is_avx = 0;

  union {
    uint64_t u[2];
    uint8_t c[16];
  } H;

  SbMemoryCopy(H.c, gcm_key, 16);

  /* H is stored in host byte order */
  H.u[0] = SbByteSwapU64(H.u[0]);
  H.u[1] = SbByteSwapU64(H.u[1]);

  SbMemoryCopy(out_key, H.c, 16);

  gcm_init_4bit(out_table, H.u);
  *out_mult = gcm_gmult_4bit;
  *out_hash = gcm_ghash_4bit;
}

void AES_gcm128_init(GCM128_CONTEXT *ctx, const AES_KEY *aes_key, int enc) {
  SbMemorySet(ctx, 0, sizeof(*ctx));
  ctx->block = AES_encrypt;

  uint8_t gcm_key[16];
  SbMemorySet(gcm_key, 0, sizeof(gcm_key));
  (*ctx->block)(gcm_key, gcm_key, aes_key);

  int is_avx;
  CRYPTO_ghash_init(&ctx->gmult, &ctx->ghash, &ctx->H, ctx->Htable, &is_avx,
                    gcm_key);
}

void AES_gcm128_setiv(GCM128_CONTEXT *ctx, const AES_KEY *key,
                      const void *iv_void, size_t len) {
  unsigned int ctr;
  const uint8_t *iv = static_cast<const uint8_t*>(iv_void);

  ctx->Yi.u[0] = 0;
  ctx->Yi.u[1] = 0;
  ctx->Xi.u[0] = 0;
  ctx->Xi.u[1] = 0;
  ctx->len.u[0] = 0; /* AAD length */
  ctx->len.u[1] = 0; /* message length */
  ctx->ares = 0;
  ctx->mres = 0;

  if (len == 12) {
    SbMemoryCopy(ctx->Yi.c, iv, 12);
    ctx->Yi.c[15] = 1;
    ctr = 1;
  } else {
    uint64_t len0 = len;

    while (len >= 16) {
      for (size_t i = 0; i < 16; ++i) {
        ctx->Yi.c[i] ^= iv[i];
      }
      GCM_MUL(ctx, Yi);
      iv += 16;
      len -= 16;
    }
    if (len) {
      for (size_t i = 0; i < len; ++i) {
        ctx->Yi.c[i] ^= iv[i];
      }
      GCM_MUL(ctx, Yi);
    }
    len0 <<= 3;
    ctx->Yi.u[1] ^= SbByteSwapU64(len0);

    GCM_MUL(ctx, Yi);
    ctr = GETU32_aligned(ctx->Yi.c + 12);
  }

  (*ctx->block)(ctx->Yi.c, ctx->EK0.c, key);
  ++ctr;
  PUTU32_aligned(ctx->Yi.c + 12, ctr);
}

int AES_gcm128_aad(GCM128_CONTEXT *ctx, const void *aad_void, size_t len) {
  unsigned int n;
  uint64_t alen = ctx->len.u[0];
  const uint8_t *aad = static_cast<const uint8_t*>(aad_void);

  if (ctx->len.u[1]) {
    return 0;
  }

  alen += len;
  if (alen > (UINT64_C(1) << 61) || (sizeof(len) == 8 && alen < len)) {
    return 0;
  }
  ctx->len.u[0] = alen;

  n = ctx->ares;
  if (n) {
    while (n && len) {
      ctx->Xi.c[n] ^= *(aad++);
      --len;
      n = (n + 1) % 16;
    }
    if (n == 0) {
      GCM_MUL(ctx, Xi);
    } else {
      ctx->ares = n;
      return 1;
    }
  }

  /* Process a whole number of blocks. */
  while (len >= 16) {
    for (size_t i = 0; i < 16; ++i) {
      ctx->Xi.c[i] ^= aad[i];
    }
    GCM_MUL(ctx, Xi);
    aad += 16;
    len -= 16;
  }

  /* Process the remainder. */
  if (len != 0) {
    n = (unsigned int)len;
    for (size_t i = 0; i < len; ++i) {
      ctx->Xi.c[i] ^= aad[i];
    }
  }

  ctx->ares = n;
  return 1;
}

int AES_gcm128_encrypt(GCM128_CONTEXT *ctx, const AES_KEY *key,
                       const void *in_void, void *out_void, size_t len) {
  unsigned int n, ctr;
  uint64_t mlen = ctx->len.u[1];
  block128_f block = ctx->block;
  const uint8_t *in = static_cast<const uint8_t*>(in_void);
  uint8_t *out = static_cast<uint8_t*>(out_void);

  mlen += len;
  if (mlen > ((UINT64_C(1) << 36) - 32) ||
      (sizeof(len) == 8 && mlen < len)) {
    return 0;
  }
  ctx->len.u[1] = mlen;

  if (ctx->ares) {
    /* First call to encrypt finalizes GHASH(AAD) */
    GCM_MUL(ctx, Xi);
    ctx->ares = 0;
  }

  ctr = GETU32_aligned(ctx->Yi.c + 12);

  n = ctx->mres;
  if (n) {
    while (n && len) {
      ctx->Xi.c[n] ^= *(out++) = *(in++) ^ ctx->EKi.c[n];
      --len;
      n = (n + 1) % 16;
    }
    if (n == 0) {
      GCM_MUL(ctx, Xi);
    } else {
      ctx->mres = n;
      return 1;
    }
  }

  while (len >= 16) {
    size_t *out_t = reinterpret_cast<size_t*>(out);
    const size_t *in_t = reinterpret_cast<const size_t*>(in);

    (*block)(ctx->Yi.c, ctx->EKi.c, key);
    ++ctr;
    PUTU32_aligned(ctx->Yi.c + 12, ctr);
    for (size_t i = 0; i < 16 / sizeof(size_t); ++i) {
      ctx->Xi.t[i] ^= out_t[i] = in_t[i] ^ ctx->EKi.t[i];
    }
    GCM_MUL(ctx, Xi);
    out += 16;
    in += 16;
    len -= 16;
  }

  if (len) {
    (*block)(ctx->Yi.c, ctx->EKi.c, key);
    ++ctr;
    PUTU32_aligned(ctx->Yi.c + 12, ctr);
    while (len--) {
      ctx->Xi.c[n] ^= out[n] = in[n] ^ ctx->EKi.c[n];
      ++n;
    }
  }

  ctx->mres = n;
  return 1;
}

int AES_gcm128_decrypt(GCM128_CONTEXT *ctx, const AES_KEY *key,
                       const void *in_void, void *out_void, size_t len) {
  unsigned int n, ctr;
  uint64_t mlen = ctx->len.u[1];
  block128_f block = ctx->block;
  const uint8_t *in = static_cast<const uint8_t*>(in_void);
  uint8_t *out = static_cast<uint8_t*>(out_void);

  mlen += len;
  if (mlen > ((UINT64_C(1) << 36) - 32) ||
      (sizeof(len) == 8 && mlen < len)) {
    return 0;
  }
  ctx->len.u[1] = mlen;

  if (ctx->ares) {
    /* First call to decrypt finalizes GHASH(AAD) */
    GCM_MUL(ctx, Xi);
    ctx->ares = 0;
  }

  ctr = GETU32_aligned(ctx->Yi.c + 12);

  n = ctx->mres;
  if (n) {
    while (n && len) {
      uint8_t c = *(in++);
      *(out++) = c ^ ctx->EKi.c[n];
      ctx->Xi.c[n] ^= c;
      --len;
      n = (n + 1) % 16;
    }
    if (n == 0) {
      GCM_MUL(ctx, Xi);
    } else {
      ctx->mres = n;
      return 1;
    }
  }

  while (len >= 16) {
    size_t *out_t = reinterpret_cast<size_t*>(out);
    const size_t *in_t = reinterpret_cast<const size_t*>(in);

    (*block)(ctx->Yi.c, ctx->EKi.c, key);
    ++ctr;
    PUTU32_aligned(ctx->Yi.c + 12, ctr);
    for (size_t i = 0; i < 16 / sizeof(size_t); ++i) {
      size_t c = in_t[i];
      out_t[i] = c ^ ctx->EKi.t[i];
      ctx->Xi.t[i] ^= c;
    }
    GCM_MUL(ctx, Xi);
    out += 16;
    in += 16;
    len -= 16;
  }

  if (len) {
    (*block)(ctx->Yi.c, ctx->EKi.c, key);
    ++ctr;
    PUTU32_aligned(ctx->Yi.c + 12, ctr);
    while (len--) {
      uint8_t c = in[n];
      ctx->Xi.c[n] ^= c;
      out[n] = c ^ ctx->EKi.c[n];
      ++n;
    }
  }

  ctx->mres = n;
  return 1;
}

void AES_gcm128_tag(GCM128_CONTEXT *ctx, void *tag, size_t len) {
  uint64_t alen = ctx->len.u[0] << 3;
  uint64_t clen = ctx->len.u[1] << 3;

  if (ctx->mres || ctx->ares) {
    GCM_MUL(ctx, Xi);
  }

  alen = SbByteSwapU64(alen);
  clen = SbByteSwapU64(clen);

  ctx->Xi.u[0] ^= alen;
  ctx->Xi.u[1] ^= clen;
  GCM_MUL(ctx, Xi);

  ctx->Xi.u[0] ^= ctx->EK0.u[0];
  ctx->Xi.u[1] ^= ctx->EK0.u[1];

  SbMemoryCopy(tag, ctx->Xi.c,
               len <= sizeof(ctx->Xi.c) ? len : sizeof(ctx->Xi.c));
}

}  // namespace cryptography
}  // namespace starboard
}  // namespace shared
}  // namespace starboard