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      1 // Copyright 2014 PDFium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
      6 
      7 #include "core/fdrm/crypto/fx_crypt.h"
      8 
      9 #define mulby2(x) (((x & 0x7F) << 1) ^ (x & 0x80 ? 0x1B : 0))
     10 #define GET_32BIT_MSB_FIRST(cp)                    \
     11   (((unsigned long)(unsigned char)(cp)[3]) |       \
     12    ((unsigned long)(unsigned char)(cp)[2] << 8) |  \
     13    ((unsigned long)(unsigned char)(cp)[1] << 16) | \
     14    ((unsigned long)(unsigned char)(cp)[0] << 24))
     15 #define PUT_32BIT_MSB_FIRST(cp, value) \
     16   do {                                 \
     17     (cp)[3] = (value);                 \
     18     (cp)[2] = (value) >> 8;            \
     19     (cp)[1] = (value) >> 16;           \
     20     (cp)[0] = (value) >> 24;           \
     21   } while (0)
     22 
     23 namespace {
     24 
     25 const unsigned char Sbox[256] = {
     26     0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b,
     27     0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0,
     28     0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26,
     29     0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
     30     0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2,
     31     0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0,
     32     0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed,
     33     0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
     34     0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f,
     35     0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5,
     36     0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec,
     37     0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
     38     0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14,
     39     0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c,
     40     0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d,
     41     0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
     42     0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f,
     43     0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e,
     44     0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11,
     45     0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
     46     0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f,
     47     0xb0, 0x54, 0xbb, 0x16};
     48 const unsigned char Sboxinv[256] = {
     49     0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e,
     50     0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87,
     51     0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32,
     52     0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
     53     0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49,
     54     0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16,
     55     0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50,
     56     0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
     57     0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05,
     58     0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02,
     59     0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41,
     60     0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
     61     0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8,
     62     0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89,
     63     0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b,
     64     0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
     65     0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59,
     66     0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d,
     67     0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d,
     68     0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
     69     0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63,
     70     0x55, 0x21, 0x0c, 0x7d};
     71 const unsigned int E0[256] = {
     72     0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d, 0xfff2f20d, 0xd66b6bbd,
     73     0xde6f6fb1, 0x91c5c554, 0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d,
     74     0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a, 0x8fcaca45, 0x1f82829d,
     75     0x89c9c940, 0xfa7d7d87, 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b,
     76     0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea, 0x239c9cbf, 0x53a4a4f7,
     77     0xe4727296, 0x9bc0c05b, 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a,
     78     0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f, 0x6834345c, 0x51a5a5f4,
     79     0xd1e5e534, 0xf9f1f108, 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f,
     80     0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e, 0x30181828, 0x379696a1,
     81     0x0a05050f, 0x2f9a9ab5, 0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d,
     82     0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f, 0x1209091b, 0x1d83839e,
     83     0x582c2c74, 0x341a1a2e, 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb,
     84     0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce, 0x5229297b, 0xdde3e33e,
     85     0x5e2f2f71, 0x13848497, 0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c,
     86     0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed, 0xd46a6abe, 0x8dcbcb46,
     87     0x67bebed9, 0x7239394b, 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a,
     88     0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16, 0x864343c5, 0x9a4d4dd7,
     89     0x66333355, 0x11858594, 0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81,
     90     0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3, 0xa25151f3, 0x5da3a3fe,
     91     0x804040c0, 0x058f8f8a, 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504,
     92     0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163, 0x20101030, 0xe5ffff1a,
     93     0xfdf3f30e, 0xbfd2d26d, 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f,
     94     0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739, 0x93c4c457, 0x55a7a7f2,
     95     0xfc7e7e82, 0x7a3d3d47, 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395,
     96     0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f, 0x44222266, 0x542a2a7e,
     97     0x3b9090ab, 0x0b888883, 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c,
     98     0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76, 0xdbe0e03b, 0x64323256,
     99     0x743a3a4e, 0x140a0a1e, 0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4,
    100     0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6, 0x399191a8, 0x319595a4,
    101     0xd3e4e437, 0xf279798b, 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7,
    102     0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0, 0xd86c6cb4, 0xac5656fa,
    103     0xf3f4f407, 0xcfeaea25, 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818,
    104     0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72, 0x381c1c24, 0x57a6a6f1,
    105     0x73b4b4c7, 0x97c6c651, 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21,
    106     0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85, 0xe0707090, 0x7c3e3e42,
    107     0x71b5b5c4, 0xcc6666aa, 0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12,
    108     0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0, 0x17868691, 0x99c1c158,
    109     0x3a1d1d27, 0x279e9eb9, 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133,
    110     0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7, 0x2d9b9bb6, 0x3c1e1e22,
    111     0x15878792, 0xc9e9e920, 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a,
    112     0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17, 0x65bfbfda, 0xd7e6e631,
    113     0x844242c6, 0xd06868b8, 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11,
    114     0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a,
    115 };
    116 const unsigned int E1[256] = {
    117     0xa5c66363, 0x84f87c7c, 0x99ee7777, 0x8df67b7b, 0x0dfff2f2, 0xbdd66b6b,
    118     0xb1de6f6f, 0x5491c5c5, 0x50603030, 0x03020101, 0xa9ce6767, 0x7d562b2b,
    119     0x19e7fefe, 0x62b5d7d7, 0xe64dabab, 0x9aec7676, 0x458fcaca, 0x9d1f8282,
    120     0x4089c9c9, 0x87fa7d7d, 0x15effafa, 0xebb25959, 0xc98e4747, 0x0bfbf0f0,
    121     0xec41adad, 0x67b3d4d4, 0xfd5fa2a2, 0xea45afaf, 0xbf239c9c, 0xf753a4a4,
    122     0x96e47272, 0x5b9bc0c0, 0xc275b7b7, 0x1ce1fdfd, 0xae3d9393, 0x6a4c2626,
    123     0x5a6c3636, 0x417e3f3f, 0x02f5f7f7, 0x4f83cccc, 0x5c683434, 0xf451a5a5,
    124     0x34d1e5e5, 0x08f9f1f1, 0x93e27171, 0x73abd8d8, 0x53623131, 0x3f2a1515,
    125     0x0c080404, 0x5295c7c7, 0x65462323, 0x5e9dc3c3, 0x28301818, 0xa1379696,
    126     0x0f0a0505, 0xb52f9a9a, 0x090e0707, 0x36241212, 0x9b1b8080, 0x3ddfe2e2,
    127     0x26cdebeb, 0x694e2727, 0xcd7fb2b2, 0x9fea7575, 0x1b120909, 0x9e1d8383,
    128     0x74582c2c, 0x2e341a1a, 0x2d361b1b, 0xb2dc6e6e, 0xeeb45a5a, 0xfb5ba0a0,
    129     0xf6a45252, 0x4d763b3b, 0x61b7d6d6, 0xce7db3b3, 0x7b522929, 0x3edde3e3,
    130     0x715e2f2f, 0x97138484, 0xf5a65353, 0x68b9d1d1, 0x00000000, 0x2cc1eded,
    131     0x60402020, 0x1fe3fcfc, 0xc879b1b1, 0xedb65b5b, 0xbed46a6a, 0x468dcbcb,
    132     0xd967bebe, 0x4b723939, 0xde944a4a, 0xd4984c4c, 0xe8b05858, 0x4a85cfcf,
    133     0x6bbbd0d0, 0x2ac5efef, 0xe54faaaa, 0x16edfbfb, 0xc5864343, 0xd79a4d4d,
    134     0x55663333, 0x94118585, 0xcf8a4545, 0x10e9f9f9, 0x06040202, 0x81fe7f7f,
    135     0xf0a05050, 0x44783c3c, 0xba259f9f, 0xe34ba8a8, 0xf3a25151, 0xfe5da3a3,
    136     0xc0804040, 0x8a058f8f, 0xad3f9292, 0xbc219d9d, 0x48703838, 0x04f1f5f5,
    137     0xdf63bcbc, 0xc177b6b6, 0x75afdada, 0x63422121, 0x30201010, 0x1ae5ffff,
    138     0x0efdf3f3, 0x6dbfd2d2, 0x4c81cdcd, 0x14180c0c, 0x35261313, 0x2fc3ecec,
    139     0xe1be5f5f, 0xa2359797, 0xcc884444, 0x392e1717, 0x5793c4c4, 0xf255a7a7,
    140     0x82fc7e7e, 0x477a3d3d, 0xacc86464, 0xe7ba5d5d, 0x2b321919, 0x95e67373,
    141     0xa0c06060, 0x98198181, 0xd19e4f4f, 0x7fa3dcdc, 0x66442222, 0x7e542a2a,
    142     0xab3b9090, 0x830b8888, 0xca8c4646, 0x29c7eeee, 0xd36bb8b8, 0x3c281414,
    143     0x79a7dede, 0xe2bc5e5e, 0x1d160b0b, 0x76addbdb, 0x3bdbe0e0, 0x56643232,
    144     0x4e743a3a, 0x1e140a0a, 0xdb924949, 0x0a0c0606, 0x6c482424, 0xe4b85c5c,
    145     0x5d9fc2c2, 0x6ebdd3d3, 0xef43acac, 0xa6c46262, 0xa8399191, 0xa4319595,
    146     0x37d3e4e4, 0x8bf27979, 0x32d5e7e7, 0x438bc8c8, 0x596e3737, 0xb7da6d6d,
    147     0x8c018d8d, 0x64b1d5d5, 0xd29c4e4e, 0xe049a9a9, 0xb4d86c6c, 0xfaac5656,
    148     0x07f3f4f4, 0x25cfeaea, 0xafca6565, 0x8ef47a7a, 0xe947aeae, 0x18100808,
    149     0xd56fbaba, 0x88f07878, 0x6f4a2525, 0x725c2e2e, 0x24381c1c, 0xf157a6a6,
    150     0xc773b4b4, 0x5197c6c6, 0x23cbe8e8, 0x7ca1dddd, 0x9ce87474, 0x213e1f1f,
    151     0xdd964b4b, 0xdc61bdbd, 0x860d8b8b, 0x850f8a8a, 0x90e07070, 0x427c3e3e,
    152     0xc471b5b5, 0xaacc6666, 0xd8904848, 0x05060303, 0x01f7f6f6, 0x121c0e0e,
    153     0xa3c26161, 0x5f6a3535, 0xf9ae5757, 0xd069b9b9, 0x91178686, 0x5899c1c1,
    154     0x273a1d1d, 0xb9279e9e, 0x38d9e1e1, 0x13ebf8f8, 0xb32b9898, 0x33221111,
    155     0xbbd26969, 0x70a9d9d9, 0x89078e8e, 0xa7339494, 0xb62d9b9b, 0x223c1e1e,
    156     0x92158787, 0x20c9e9e9, 0x4987cece, 0xffaa5555, 0x78502828, 0x7aa5dfdf,
    157     0x8f038c8c, 0xf859a1a1, 0x80098989, 0x171a0d0d, 0xda65bfbf, 0x31d7e6e6,
    158     0xc6844242, 0xb8d06868, 0xc3824141, 0xb0299999, 0x775a2d2d, 0x111e0f0f,
    159     0xcb7bb0b0, 0xfca85454, 0xd66dbbbb, 0x3a2c1616,
    160 };
    161 const unsigned int E2[256] = {
    162     0x63a5c663, 0x7c84f87c, 0x7799ee77, 0x7b8df67b, 0xf20dfff2, 0x6bbdd66b,
    163     0x6fb1de6f, 0xc55491c5, 0x30506030, 0x01030201, 0x67a9ce67, 0x2b7d562b,
    164     0xfe19e7fe, 0xd762b5d7, 0xabe64dab, 0x769aec76, 0xca458fca, 0x829d1f82,
    165     0xc94089c9, 0x7d87fa7d, 0xfa15effa, 0x59ebb259, 0x47c98e47, 0xf00bfbf0,
    166     0xadec41ad, 0xd467b3d4, 0xa2fd5fa2, 0xafea45af, 0x9cbf239c, 0xa4f753a4,
    167     0x7296e472, 0xc05b9bc0, 0xb7c275b7, 0xfd1ce1fd, 0x93ae3d93, 0x266a4c26,
    168     0x365a6c36, 0x3f417e3f, 0xf702f5f7, 0xcc4f83cc, 0x345c6834, 0xa5f451a5,
    169     0xe534d1e5, 0xf108f9f1, 0x7193e271, 0xd873abd8, 0x31536231, 0x153f2a15,
    170     0x040c0804, 0xc75295c7, 0x23654623, 0xc35e9dc3, 0x18283018, 0x96a13796,
    171     0x050f0a05, 0x9ab52f9a, 0x07090e07, 0x12362412, 0x809b1b80, 0xe23ddfe2,
    172     0xeb26cdeb, 0x27694e27, 0xb2cd7fb2, 0x759fea75, 0x091b1209, 0x839e1d83,
    173     0x2c74582c, 0x1a2e341a, 0x1b2d361b, 0x6eb2dc6e, 0x5aeeb45a, 0xa0fb5ba0,
    174     0x52f6a452, 0x3b4d763b, 0xd661b7d6, 0xb3ce7db3, 0x297b5229, 0xe33edde3,
    175     0x2f715e2f, 0x84971384, 0x53f5a653, 0xd168b9d1, 0x00000000, 0xed2cc1ed,
    176     0x20604020, 0xfc1fe3fc, 0xb1c879b1, 0x5bedb65b, 0x6abed46a, 0xcb468dcb,
    177     0xbed967be, 0x394b7239, 0x4ade944a, 0x4cd4984c, 0x58e8b058, 0xcf4a85cf,
    178     0xd06bbbd0, 0xef2ac5ef, 0xaae54faa, 0xfb16edfb, 0x43c58643, 0x4dd79a4d,
    179     0x33556633, 0x85941185, 0x45cf8a45, 0xf910e9f9, 0x02060402, 0x7f81fe7f,
    180     0x50f0a050, 0x3c44783c, 0x9fba259f, 0xa8e34ba8, 0x51f3a251, 0xa3fe5da3,
    181     0x40c08040, 0x8f8a058f, 0x92ad3f92, 0x9dbc219d, 0x38487038, 0xf504f1f5,
    182     0xbcdf63bc, 0xb6c177b6, 0xda75afda, 0x21634221, 0x10302010, 0xff1ae5ff,
    183     0xf30efdf3, 0xd26dbfd2, 0xcd4c81cd, 0x0c14180c, 0x13352613, 0xec2fc3ec,
    184     0x5fe1be5f, 0x97a23597, 0x44cc8844, 0x17392e17, 0xc45793c4, 0xa7f255a7,
    185     0x7e82fc7e, 0x3d477a3d, 0x64acc864, 0x5de7ba5d, 0x192b3219, 0x7395e673,
    186     0x60a0c060, 0x81981981, 0x4fd19e4f, 0xdc7fa3dc, 0x22664422, 0x2a7e542a,
    187     0x90ab3b90, 0x88830b88, 0x46ca8c46, 0xee29c7ee, 0xb8d36bb8, 0x143c2814,
    188     0xde79a7de, 0x5ee2bc5e, 0x0b1d160b, 0xdb76addb, 0xe03bdbe0, 0x32566432,
    189     0x3a4e743a, 0x0a1e140a, 0x49db9249, 0x060a0c06, 0x246c4824, 0x5ce4b85c,
    190     0xc25d9fc2, 0xd36ebdd3, 0xacef43ac, 0x62a6c462, 0x91a83991, 0x95a43195,
    191     0xe437d3e4, 0x798bf279, 0xe732d5e7, 0xc8438bc8, 0x37596e37, 0x6db7da6d,
    192     0x8d8c018d, 0xd564b1d5, 0x4ed29c4e, 0xa9e049a9, 0x6cb4d86c, 0x56faac56,
    193     0xf407f3f4, 0xea25cfea, 0x65afca65, 0x7a8ef47a, 0xaee947ae, 0x08181008,
    194     0xbad56fba, 0x7888f078, 0x256f4a25, 0x2e725c2e, 0x1c24381c, 0xa6f157a6,
    195     0xb4c773b4, 0xc65197c6, 0xe823cbe8, 0xdd7ca1dd, 0x749ce874, 0x1f213e1f,
    196     0x4bdd964b, 0xbddc61bd, 0x8b860d8b, 0x8a850f8a, 0x7090e070, 0x3e427c3e,
    197     0xb5c471b5, 0x66aacc66, 0x48d89048, 0x03050603, 0xf601f7f6, 0x0e121c0e,
    198     0x61a3c261, 0x355f6a35, 0x57f9ae57, 0xb9d069b9, 0x86911786, 0xc15899c1,
    199     0x1d273a1d, 0x9eb9279e, 0xe138d9e1, 0xf813ebf8, 0x98b32b98, 0x11332211,
    200     0x69bbd269, 0xd970a9d9, 0x8e89078e, 0x94a73394, 0x9bb62d9b, 0x1e223c1e,
    201     0x87921587, 0xe920c9e9, 0xce4987ce, 0x55ffaa55, 0x28785028, 0xdf7aa5df,
    202     0x8c8f038c, 0xa1f859a1, 0x89800989, 0x0d171a0d, 0xbfda65bf, 0xe631d7e6,
    203     0x42c68442, 0x68b8d068, 0x41c38241, 0x99b02999, 0x2d775a2d, 0x0f111e0f,
    204     0xb0cb7bb0, 0x54fca854, 0xbbd66dbb, 0x163a2c16,
    205 };
    206 const unsigned int E3[256] = {
    207     0x6363a5c6, 0x7c7c84f8, 0x777799ee, 0x7b7b8df6, 0xf2f20dff, 0x6b6bbdd6,
    208     0x6f6fb1de, 0xc5c55491, 0x30305060, 0x01010302, 0x6767a9ce, 0x2b2b7d56,
    209     0xfefe19e7, 0xd7d762b5, 0xababe64d, 0x76769aec, 0xcaca458f, 0x82829d1f,
    210     0xc9c94089, 0x7d7d87fa, 0xfafa15ef, 0x5959ebb2, 0x4747c98e, 0xf0f00bfb,
    211     0xadadec41, 0xd4d467b3, 0xa2a2fd5f, 0xafafea45, 0x9c9cbf23, 0xa4a4f753,
    212     0x727296e4, 0xc0c05b9b, 0xb7b7c275, 0xfdfd1ce1, 0x9393ae3d, 0x26266a4c,
    213     0x36365a6c, 0x3f3f417e, 0xf7f702f5, 0xcccc4f83, 0x34345c68, 0xa5a5f451,
    214     0xe5e534d1, 0xf1f108f9, 0x717193e2, 0xd8d873ab, 0x31315362, 0x15153f2a,
    215     0x04040c08, 0xc7c75295, 0x23236546, 0xc3c35e9d, 0x18182830, 0x9696a137,
    216     0x05050f0a, 0x9a9ab52f, 0x0707090e, 0x12123624, 0x80809b1b, 0xe2e23ddf,
    217     0xebeb26cd, 0x2727694e, 0xb2b2cd7f, 0x75759fea, 0x09091b12, 0x83839e1d,
    218     0x2c2c7458, 0x1a1a2e34, 0x1b1b2d36, 0x6e6eb2dc, 0x5a5aeeb4, 0xa0a0fb5b,
    219     0x5252f6a4, 0x3b3b4d76, 0xd6d661b7, 0xb3b3ce7d, 0x29297b52, 0xe3e33edd,
    220     0x2f2f715e, 0x84849713, 0x5353f5a6, 0xd1d168b9, 0x00000000, 0xeded2cc1,
    221     0x20206040, 0xfcfc1fe3, 0xb1b1c879, 0x5b5bedb6, 0x6a6abed4, 0xcbcb468d,
    222     0xbebed967, 0x39394b72, 0x4a4ade94, 0x4c4cd498, 0x5858e8b0, 0xcfcf4a85,
    223     0xd0d06bbb, 0xefef2ac5, 0xaaaae54f, 0xfbfb16ed, 0x4343c586, 0x4d4dd79a,
    224     0x33335566, 0x85859411, 0x4545cf8a, 0xf9f910e9, 0x02020604, 0x7f7f81fe,
    225     0x5050f0a0, 0x3c3c4478, 0x9f9fba25, 0xa8a8e34b, 0x5151f3a2, 0xa3a3fe5d,
    226     0x4040c080, 0x8f8f8a05, 0x9292ad3f, 0x9d9dbc21, 0x38384870, 0xf5f504f1,
    227     0xbcbcdf63, 0xb6b6c177, 0xdada75af, 0x21216342, 0x10103020, 0xffff1ae5,
    228     0xf3f30efd, 0xd2d26dbf, 0xcdcd4c81, 0x0c0c1418, 0x13133526, 0xecec2fc3,
    229     0x5f5fe1be, 0x9797a235, 0x4444cc88, 0x1717392e, 0xc4c45793, 0xa7a7f255,
    230     0x7e7e82fc, 0x3d3d477a, 0x6464acc8, 0x5d5de7ba, 0x19192b32, 0x737395e6,
    231     0x6060a0c0, 0x81819819, 0x4f4fd19e, 0xdcdc7fa3, 0x22226644, 0x2a2a7e54,
    232     0x9090ab3b, 0x8888830b, 0x4646ca8c, 0xeeee29c7, 0xb8b8d36b, 0x14143c28,
    233     0xdede79a7, 0x5e5ee2bc, 0x0b0b1d16, 0xdbdb76ad, 0xe0e03bdb, 0x32325664,
    234     0x3a3a4e74, 0x0a0a1e14, 0x4949db92, 0x06060a0c, 0x24246c48, 0x5c5ce4b8,
    235     0xc2c25d9f, 0xd3d36ebd, 0xacacef43, 0x6262a6c4, 0x9191a839, 0x9595a431,
    236     0xe4e437d3, 0x79798bf2, 0xe7e732d5, 0xc8c8438b, 0x3737596e, 0x6d6db7da,
    237     0x8d8d8c01, 0xd5d564b1, 0x4e4ed29c, 0xa9a9e049, 0x6c6cb4d8, 0x5656faac,
    238     0xf4f407f3, 0xeaea25cf, 0x6565afca, 0x7a7a8ef4, 0xaeaee947, 0x08081810,
    239     0xbabad56f, 0x787888f0, 0x25256f4a, 0x2e2e725c, 0x1c1c2438, 0xa6a6f157,
    240     0xb4b4c773, 0xc6c65197, 0xe8e823cb, 0xdddd7ca1, 0x74749ce8, 0x1f1f213e,
    241     0x4b4bdd96, 0xbdbddc61, 0x8b8b860d, 0x8a8a850f, 0x707090e0, 0x3e3e427c,
    242     0xb5b5c471, 0x6666aacc, 0x4848d890, 0x03030506, 0xf6f601f7, 0x0e0e121c,
    243     0x6161a3c2, 0x35355f6a, 0x5757f9ae, 0xb9b9d069, 0x86869117, 0xc1c15899,
    244     0x1d1d273a, 0x9e9eb927, 0xe1e138d9, 0xf8f813eb, 0x9898b32b, 0x11113322,
    245     0x6969bbd2, 0xd9d970a9, 0x8e8e8907, 0x9494a733, 0x9b9bb62d, 0x1e1e223c,
    246     0x87879215, 0xe9e920c9, 0xcece4987, 0x5555ffaa, 0x28287850, 0xdfdf7aa5,
    247     0x8c8c8f03, 0xa1a1f859, 0x89898009, 0x0d0d171a, 0xbfbfda65, 0xe6e631d7,
    248     0x4242c684, 0x6868b8d0, 0x4141c382, 0x9999b029, 0x2d2d775a, 0x0f0f111e,
    249     0xb0b0cb7b, 0x5454fca8, 0xbbbbd66d, 0x16163a2c,
    250 };
    251 const unsigned int D0[256] = {
    252     0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96, 0x3bab6bcb, 0x1f9d45f1,
    253     0xacfa58ab, 0x4be30393, 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25,
    254     0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f, 0xdeb15a49, 0x25ba1b67,
    255     0x45ea0e98, 0x5dfec0e1, 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6,
    256     0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da, 0xd4be832d, 0x587421d3,
    257     0x49e06929, 0x8ec9c844, 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd,
    258     0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4, 0x63df4a18, 0xe51a3182,
    259     0x97513360, 0x62537f45, 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94,
    260     0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7, 0xab73d323, 0x724b02e2,
    261     0xe31f8f57, 0x6655ab2a, 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5,
    262     0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c, 0x8acf1c2b, 0xa779b492,
    263     0xf307f2f0, 0x4e69e2a1, 0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a,
    264     0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75, 0x0b83ec39, 0x4060efaa,
    265     0x5e719f06, 0xbd6e1051, 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46,
    266     0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff, 0x1998fb24, 0xd6bde997,
    267     0x894043cc, 0x67d99e77, 0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb,
    268     0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000, 0x09808683, 0x322bed48,
    269     0x1e1170ac, 0x6c5a724e, 0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927,
    270     0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a, 0x0c0a67b1, 0x9357e70f,
    271     0xb4ee96d2, 0x1b9b919e, 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16,
    272     0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d, 0x0e090d0b, 0xf28bc7ad,
    273     0x2db6a8b9, 0x141ea9c8, 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd,
    274     0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34, 0x8b432976, 0xcb23c6dc,
    275     0xb6edfc68, 0xb8e4f163, 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120,
    276     0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d, 0x1d9e2f4b, 0xdcb230f3,
    277     0x0d8652ec, 0x77c1e3d0, 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422,
    278     0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef, 0x87494ec7, 0xd938d1c1,
    279     0x8ccaa2fe, 0x98d40b36, 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4,
    280     0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662, 0xf68d13c2, 0x90d8b8e8,
    281     0x2e39f75e, 0x82c3aff5, 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3,
    282     0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b, 0xcd267809, 0x6e5918f4,
    283     0xec9ab701, 0x834f9aa8, 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6,
    284     0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6, 0x31a4b2af, 0x2a3f2331,
    285     0xc6a59430, 0x35a266c0, 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815,
    286     0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f, 0x764dd68d, 0x43efb04d,
    287     0xccaa4d54, 0xe49604df, 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f,
    288     0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e, 0xb3671d5a, 0x92dbd252,
    289     0xe9105633, 0x6dd64713, 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89,
    290     0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c, 0x9cd2df59, 0x55f2733f,
    291     0x1814ce79, 0x73c737bf, 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86,
    292     0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f, 0x161dc372, 0xbce2250c,
    293     0x283c498b, 0xff0d9541, 0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190,
    294     0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742,
    295 };
    296 const unsigned int D1[256] = {
    297     0x5051f4a7, 0x537e4165, 0xc31a17a4, 0x963a275e, 0xcb3bab6b, 0xf11f9d45,
    298     0xabacfa58, 0x934be303, 0x552030fa, 0xf6ad766d, 0x9188cc76, 0x25f5024c,
    299     0xfc4fe5d7, 0xd7c52acb, 0x80263544, 0x8fb562a3, 0x49deb15a, 0x6725ba1b,
    300     0x9845ea0e, 0xe15dfec0, 0x02c32f75, 0x12814cf0, 0xa38d4697, 0xc66bd3f9,
    301     0xe7038f5f, 0x9515929c, 0xebbf6d7a, 0xda955259, 0x2dd4be83, 0xd3587421,
    302     0x2949e069, 0x448ec9c8, 0x6a75c289, 0x78f48e79, 0x6b99583e, 0xdd27b971,
    303     0xb6bee14f, 0x17f088ad, 0x66c920ac, 0xb47dce3a, 0x1863df4a, 0x82e51a31,
    304     0x60975133, 0x4562537f, 0xe0b16477, 0x84bb6bae, 0x1cfe81a0, 0x94f9082b,
    305     0x58704868, 0x198f45fd, 0x8794de6c, 0xb7527bf8, 0x23ab73d3, 0xe2724b02,
    306     0x57e31f8f, 0x2a6655ab, 0x07b2eb28, 0x032fb5c2, 0x9a86c57b, 0xa5d33708,
    307     0xf2302887, 0xb223bfa5, 0xba02036a, 0x5ced1682, 0x2b8acf1c, 0x92a779b4,
    308     0xf0f307f2, 0xa14e69e2, 0xcd65daf4, 0xd50605be, 0x1fd13462, 0x8ac4a6fe,
    309     0x9d342e53, 0xa0a2f355, 0x32058ae1, 0x75a4f6eb, 0x390b83ec, 0xaa4060ef,
    310     0x065e719f, 0x51bd6e10, 0xf93e218a, 0x3d96dd06, 0xaedd3e05, 0x464de6bd,
    311     0xb591548d, 0x0571c45d, 0x6f0406d4, 0xff605015, 0x241998fb, 0x97d6bde9,
    312     0xcc894043, 0x7767d99e, 0xbdb0e842, 0x8807898b, 0x38e7195b, 0xdb79c8ee,
    313     0x47a17c0a, 0xe97c420f, 0xc9f8841e, 0x00000000, 0x83098086, 0x48322bed,
    314     0xac1e1170, 0x4e6c5a72, 0xfbfd0eff, 0x560f8538, 0x1e3daed5, 0x27362d39,
    315     0x640a0fd9, 0x21685ca6, 0xd19b5b54, 0x3a24362e, 0xb10c0a67, 0x0f9357e7,
    316     0xd2b4ee96, 0x9e1b9b91, 0x4f80c0c5, 0xa261dc20, 0x695a774b, 0x161c121a,
    317     0x0ae293ba, 0xe5c0a02a, 0x433c22e0, 0x1d121b17, 0x0b0e090d, 0xadf28bc7,
    318     0xb92db6a8, 0xc8141ea9, 0x8557f119, 0x4caf7507, 0xbbee99dd, 0xfda37f60,
    319     0x9ff70126, 0xbc5c72f5, 0xc544663b, 0x345bfb7e, 0x768b4329, 0xdccb23c6,
    320     0x68b6edfc, 0x63b8e4f1, 0xcad731dc, 0x10426385, 0x40139722, 0x2084c611,
    321     0x7d854a24, 0xf8d2bb3d, 0x11aef932, 0x6dc729a1, 0x4b1d9e2f, 0xf3dcb230,
    322     0xec0d8652, 0xd077c1e3, 0x6c2bb316, 0x99a970b9, 0xfa119448, 0x2247e964,
    323     0xc4a8fc8c, 0x1aa0f03f, 0xd8567d2c, 0xef223390, 0xc787494e, 0xc1d938d1,
    324     0xfe8ccaa2, 0x3698d40b, 0xcfa6f581, 0x28a57ade, 0x26dab78e, 0xa43fadbf,
    325     0xe42c3a9d, 0x0d507892, 0x9b6a5fcc, 0x62547e46, 0xc2f68d13, 0xe890d8b8,
    326     0x5e2e39f7, 0xf582c3af, 0xbe9f5d80, 0x7c69d093, 0xa96fd52d, 0xb3cf2512,
    327     0x3bc8ac99, 0xa710187d, 0x6ee89c63, 0x7bdb3bbb, 0x09cd2678, 0xf46e5918,
    328     0x01ec9ab7, 0xa8834f9a, 0x65e6956e, 0x7eaaffe6, 0x0821bccf, 0xe6ef15e8,
    329     0xd9bae79b, 0xce4a6f36, 0xd4ea9f09, 0xd629b07c, 0xaf31a4b2, 0x312a3f23,
    330     0x30c6a594, 0xc035a266, 0x37744ebc, 0xa6fc82ca, 0xb0e090d0, 0x1533a7d8,
    331     0x4af10498, 0xf741ecda, 0x0e7fcd50, 0x2f1791f6, 0x8d764dd6, 0x4d43efb0,
    332     0x54ccaa4d, 0xdfe49604, 0xe39ed1b5, 0x1b4c6a88, 0xb8c12c1f, 0x7f466551,
    333     0x049d5eea, 0x5d018c35, 0x73fa8774, 0x2efb0b41, 0x5ab3671d, 0x5292dbd2,
    334     0x33e91056, 0x136dd647, 0x8c9ad761, 0x7a37a10c, 0x8e59f814, 0x89eb133c,
    335     0xeecea927, 0x35b761c9, 0xede11ce5, 0x3c7a47b1, 0x599cd2df, 0x3f55f273,
    336     0x791814ce, 0xbf73c737, 0xea53f7cd, 0x5b5ffdaa, 0x14df3d6f, 0x867844db,
    337     0x81caaff3, 0x3eb968c4, 0x2c382434, 0x5fc2a340, 0x72161dc3, 0x0cbce225,
    338     0x8b283c49, 0x41ff0d95, 0x7139a801, 0xde080cb3, 0x9cd8b4e4, 0x906456c1,
    339     0x617bcb84, 0x70d532b6, 0x74486c5c, 0x42d0b857,
    340 };
    341 const unsigned int D2[256] = {
    342     0xa75051f4, 0x65537e41, 0xa4c31a17, 0x5e963a27, 0x6bcb3bab, 0x45f11f9d,
    343     0x58abacfa, 0x03934be3, 0xfa552030, 0x6df6ad76, 0x769188cc, 0x4c25f502,
    344     0xd7fc4fe5, 0xcbd7c52a, 0x44802635, 0xa38fb562, 0x5a49deb1, 0x1b6725ba,
    345     0x0e9845ea, 0xc0e15dfe, 0x7502c32f, 0xf012814c, 0x97a38d46, 0xf9c66bd3,
    346     0x5fe7038f, 0x9c951592, 0x7aebbf6d, 0x59da9552, 0x832dd4be, 0x21d35874,
    347     0x692949e0, 0xc8448ec9, 0x896a75c2, 0x7978f48e, 0x3e6b9958, 0x71dd27b9,
    348     0x4fb6bee1, 0xad17f088, 0xac66c920, 0x3ab47dce, 0x4a1863df, 0x3182e51a,
    349     0x33609751, 0x7f456253, 0x77e0b164, 0xae84bb6b, 0xa01cfe81, 0x2b94f908,
    350     0x68587048, 0xfd198f45, 0x6c8794de, 0xf8b7527b, 0xd323ab73, 0x02e2724b,
    351     0x8f57e31f, 0xab2a6655, 0x2807b2eb, 0xc2032fb5, 0x7b9a86c5, 0x08a5d337,
    352     0x87f23028, 0xa5b223bf, 0x6aba0203, 0x825ced16, 0x1c2b8acf, 0xb492a779,
    353     0xf2f0f307, 0xe2a14e69, 0xf4cd65da, 0xbed50605, 0x621fd134, 0xfe8ac4a6,
    354     0x539d342e, 0x55a0a2f3, 0xe132058a, 0xeb75a4f6, 0xec390b83, 0xefaa4060,
    355     0x9f065e71, 0x1051bd6e, 0x8af93e21, 0x063d96dd, 0x05aedd3e, 0xbd464de6,
    356     0x8db59154, 0x5d0571c4, 0xd46f0406, 0x15ff6050, 0xfb241998, 0xe997d6bd,
    357     0x43cc8940, 0x9e7767d9, 0x42bdb0e8, 0x8b880789, 0x5b38e719, 0xeedb79c8,
    358     0x0a47a17c, 0x0fe97c42, 0x1ec9f884, 0x00000000, 0x86830980, 0xed48322b,
    359     0x70ac1e11, 0x724e6c5a, 0xfffbfd0e, 0x38560f85, 0xd51e3dae, 0x3927362d,
    360     0xd9640a0f, 0xa621685c, 0x54d19b5b, 0x2e3a2436, 0x67b10c0a, 0xe70f9357,
    361     0x96d2b4ee, 0x919e1b9b, 0xc54f80c0, 0x20a261dc, 0x4b695a77, 0x1a161c12,
    362     0xba0ae293, 0x2ae5c0a0, 0xe0433c22, 0x171d121b, 0x0d0b0e09, 0xc7adf28b,
    363     0xa8b92db6, 0xa9c8141e, 0x198557f1, 0x074caf75, 0xddbbee99, 0x60fda37f,
    364     0x269ff701, 0xf5bc5c72, 0x3bc54466, 0x7e345bfb, 0x29768b43, 0xc6dccb23,
    365     0xfc68b6ed, 0xf163b8e4, 0xdccad731, 0x85104263, 0x22401397, 0x112084c6,
    366     0x247d854a, 0x3df8d2bb, 0x3211aef9, 0xa16dc729, 0x2f4b1d9e, 0x30f3dcb2,
    367     0x52ec0d86, 0xe3d077c1, 0x166c2bb3, 0xb999a970, 0x48fa1194, 0x642247e9,
    368     0x8cc4a8fc, 0x3f1aa0f0, 0x2cd8567d, 0x90ef2233, 0x4ec78749, 0xd1c1d938,
    369     0xa2fe8cca, 0x0b3698d4, 0x81cfa6f5, 0xde28a57a, 0x8e26dab7, 0xbfa43fad,
    370     0x9de42c3a, 0x920d5078, 0xcc9b6a5f, 0x4662547e, 0x13c2f68d, 0xb8e890d8,
    371     0xf75e2e39, 0xaff582c3, 0x80be9f5d, 0x937c69d0, 0x2da96fd5, 0x12b3cf25,
    372     0x993bc8ac, 0x7da71018, 0x636ee89c, 0xbb7bdb3b, 0x7809cd26, 0x18f46e59,
    373     0xb701ec9a, 0x9aa8834f, 0x6e65e695, 0xe67eaaff, 0xcf0821bc, 0xe8e6ef15,
    374     0x9bd9bae7, 0x36ce4a6f, 0x09d4ea9f, 0x7cd629b0, 0xb2af31a4, 0x23312a3f,
    375     0x9430c6a5, 0x66c035a2, 0xbc37744e, 0xcaa6fc82, 0xd0b0e090, 0xd81533a7,
    376     0x984af104, 0xdaf741ec, 0x500e7fcd, 0xf62f1791, 0xd68d764d, 0xb04d43ef,
    377     0x4d54ccaa, 0x04dfe496, 0xb5e39ed1, 0x881b4c6a, 0x1fb8c12c, 0x517f4665,
    378     0xea049d5e, 0x355d018c, 0x7473fa87, 0x412efb0b, 0x1d5ab367, 0xd25292db,
    379     0x5633e910, 0x47136dd6, 0x618c9ad7, 0x0c7a37a1, 0x148e59f8, 0x3c89eb13,
    380     0x27eecea9, 0xc935b761, 0xe5ede11c, 0xb13c7a47, 0xdf599cd2, 0x733f55f2,
    381     0xce791814, 0x37bf73c7, 0xcdea53f7, 0xaa5b5ffd, 0x6f14df3d, 0xdb867844,
    382     0xf381caaf, 0xc43eb968, 0x342c3824, 0x405fc2a3, 0xc372161d, 0x250cbce2,
    383     0x498b283c, 0x9541ff0d, 0x017139a8, 0xb3de080c, 0xe49cd8b4, 0xc1906456,
    384     0x84617bcb, 0xb670d532, 0x5c74486c, 0x5742d0b8,
    385 };
    386 const unsigned int D3[256] = {
    387     0xf4a75051, 0x4165537e, 0x17a4c31a, 0x275e963a, 0xab6bcb3b, 0x9d45f11f,
    388     0xfa58abac, 0xe303934b, 0x30fa5520, 0x766df6ad, 0xcc769188, 0x024c25f5,
    389     0xe5d7fc4f, 0x2acbd7c5, 0x35448026, 0x62a38fb5, 0xb15a49de, 0xba1b6725,
    390     0xea0e9845, 0xfec0e15d, 0x2f7502c3, 0x4cf01281, 0x4697a38d, 0xd3f9c66b,
    391     0x8f5fe703, 0x929c9515, 0x6d7aebbf, 0x5259da95, 0xbe832dd4, 0x7421d358,
    392     0xe0692949, 0xc9c8448e, 0xc2896a75, 0x8e7978f4, 0x583e6b99, 0xb971dd27,
    393     0xe14fb6be, 0x88ad17f0, 0x20ac66c9, 0xce3ab47d, 0xdf4a1863, 0x1a3182e5,
    394     0x51336097, 0x537f4562, 0x6477e0b1, 0x6bae84bb, 0x81a01cfe, 0x082b94f9,
    395     0x48685870, 0x45fd198f, 0xde6c8794, 0x7bf8b752, 0x73d323ab, 0x4b02e272,
    396     0x1f8f57e3, 0x55ab2a66, 0xeb2807b2, 0xb5c2032f, 0xc57b9a86, 0x3708a5d3,
    397     0x2887f230, 0xbfa5b223, 0x036aba02, 0x16825ced, 0xcf1c2b8a, 0x79b492a7,
    398     0x07f2f0f3, 0x69e2a14e, 0xdaf4cd65, 0x05bed506, 0x34621fd1, 0xa6fe8ac4,
    399     0x2e539d34, 0xf355a0a2, 0x8ae13205, 0xf6eb75a4, 0x83ec390b, 0x60efaa40,
    400     0x719f065e, 0x6e1051bd, 0x218af93e, 0xdd063d96, 0x3e05aedd, 0xe6bd464d,
    401     0x548db591, 0xc45d0571, 0x06d46f04, 0x5015ff60, 0x98fb2419, 0xbde997d6,
    402     0x4043cc89, 0xd99e7767, 0xe842bdb0, 0x898b8807, 0x195b38e7, 0xc8eedb79,
    403     0x7c0a47a1, 0x420fe97c, 0x841ec9f8, 0x00000000, 0x80868309, 0x2bed4832,
    404     0x1170ac1e, 0x5a724e6c, 0x0efffbfd, 0x8538560f, 0xaed51e3d, 0x2d392736,
    405     0x0fd9640a, 0x5ca62168, 0x5b54d19b, 0x362e3a24, 0x0a67b10c, 0x57e70f93,
    406     0xee96d2b4, 0x9b919e1b, 0xc0c54f80, 0xdc20a261, 0x774b695a, 0x121a161c,
    407     0x93ba0ae2, 0xa02ae5c0, 0x22e0433c, 0x1b171d12, 0x090d0b0e, 0x8bc7adf2,
    408     0xb6a8b92d, 0x1ea9c814, 0xf1198557, 0x75074caf, 0x99ddbbee, 0x7f60fda3,
    409     0x01269ff7, 0x72f5bc5c, 0x663bc544, 0xfb7e345b, 0x4329768b, 0x23c6dccb,
    410     0xedfc68b6, 0xe4f163b8, 0x31dccad7, 0x63851042, 0x97224013, 0xc6112084,
    411     0x4a247d85, 0xbb3df8d2, 0xf93211ae, 0x29a16dc7, 0x9e2f4b1d, 0xb230f3dc,
    412     0x8652ec0d, 0xc1e3d077, 0xb3166c2b, 0x70b999a9, 0x9448fa11, 0xe9642247,
    413     0xfc8cc4a8, 0xf03f1aa0, 0x7d2cd856, 0x3390ef22, 0x494ec787, 0x38d1c1d9,
    414     0xcaa2fe8c, 0xd40b3698, 0xf581cfa6, 0x7ade28a5, 0xb78e26da, 0xadbfa43f,
    415     0x3a9de42c, 0x78920d50, 0x5fcc9b6a, 0x7e466254, 0x8d13c2f6, 0xd8b8e890,
    416     0x39f75e2e, 0xc3aff582, 0x5d80be9f, 0xd0937c69, 0xd52da96f, 0x2512b3cf,
    417     0xac993bc8, 0x187da710, 0x9c636ee8, 0x3bbb7bdb, 0x267809cd, 0x5918f46e,
    418     0x9ab701ec, 0x4f9aa883, 0x956e65e6, 0xffe67eaa, 0xbccf0821, 0x15e8e6ef,
    419     0xe79bd9ba, 0x6f36ce4a, 0x9f09d4ea, 0xb07cd629, 0xa4b2af31, 0x3f23312a,
    420     0xa59430c6, 0xa266c035, 0x4ebc3774, 0x82caa6fc, 0x90d0b0e0, 0xa7d81533,
    421     0x04984af1, 0xecdaf741, 0xcd500e7f, 0x91f62f17, 0x4dd68d76, 0xefb04d43,
    422     0xaa4d54cc, 0x9604dfe4, 0xd1b5e39e, 0x6a881b4c, 0x2c1fb8c1, 0x65517f46,
    423     0x5eea049d, 0x8c355d01, 0x877473fa, 0x0b412efb, 0x671d5ab3, 0xdbd25292,
    424     0x105633e9, 0xd647136d, 0xd7618c9a, 0xa10c7a37, 0xf8148e59, 0x133c89eb,
    425     0xa927eece, 0x61c935b7, 0x1ce5ede1, 0x47b13c7a, 0xd2df599c, 0xf2733f55,
    426     0x14ce7918, 0xc737bf73, 0xf7cdea53, 0xfdaa5b5f, 0x3d6f14df, 0x44db8678,
    427     0xaff381ca, 0x68c43eb9, 0x24342c38, 0xa3405fc2, 0x1dc37216, 0xe2250cbc,
    428     0x3c498b28, 0x0d9541ff, 0xa8017139, 0x0cb3de08, 0xb4e49cd8, 0x56c19064,
    429     0xcb84617b, 0x32b670d5, 0x6c5c7448, 0xb85742d0,
    430 };
    431 #define ADD_ROUND_KEY_4                                                       \
    432   (block[0] ^= *keysched++, block[1] ^= *keysched++, block[2] ^= *keysched++, \
    433    block[3] ^= *keysched++)
    434 #define ADD_ROUND_KEY_6                                                       \
    435   (block[0] ^= *keysched++, block[1] ^= *keysched++, block[2] ^= *keysched++, \
    436    block[3] ^= *keysched++, block[4] ^= *keysched++, block[5] ^= *keysched++)
    437 #define ADD_ROUND_KEY_8                                                       \
    438   (block[0] ^= *keysched++, block[1] ^= *keysched++, block[2] ^= *keysched++, \
    439    block[3] ^= *keysched++, block[4] ^= *keysched++, block[5] ^= *keysched++, \
    440    block[6] ^= *keysched++, block[7] ^= *keysched++)
    441 #define MOVEWORD(i) (block[i] = newstate[i])
    442 #undef MAKEWORD
    443 #define MAKEWORD(i)                                         \
    444   (newstate[i] = (E0[(block[i] >> 24) & 0xFF] ^             \
    445                   E1[(block[(i + C1) % Nb] >> 16) & 0xFF] ^ \
    446                   E2[(block[(i + C2) % Nb] >> 8) & 0xFF] ^  \
    447                   E3[block[(i + C3) % Nb] & 0xFF]))
    448 #define LASTWORD(i)                                                  \
    449   (newstate[i] = (Sbox[(block[i] >> 24) & 0xFF] << 24) |             \
    450                  (Sbox[(block[(i + C1) % Nb] >> 16) & 0xFF] << 16) | \
    451                  (Sbox[(block[(i + C2) % Nb] >> 8) & 0xFF] << 8) |   \
    452                  (Sbox[(block[(i + C3) % Nb]) & 0xFF]))
    453 
    454 void aes_encrypt_nb_4(CRYPT_aes_context* ctx, unsigned int* block) {
    455   int i;
    456   const int C1 = 1, C2 = 2, C3 = 3, Nb = 4;
    457   unsigned int* keysched = ctx->keysched;
    458   unsigned int newstate[4];
    459   for (i = 0; i < ctx->Nr - 1; i++) {
    460     ADD_ROUND_KEY_4;
    461     MAKEWORD(0);
    462     MAKEWORD(1);
    463     MAKEWORD(2);
    464     MAKEWORD(3);
    465     MOVEWORD(0);
    466     MOVEWORD(1);
    467     MOVEWORD(2);
    468     MOVEWORD(3);
    469   }
    470   ADD_ROUND_KEY_4;
    471   LASTWORD(0);
    472   LASTWORD(1);
    473   LASTWORD(2);
    474   LASTWORD(3);
    475   MOVEWORD(0);
    476   MOVEWORD(1);
    477   MOVEWORD(2);
    478   MOVEWORD(3);
    479   ADD_ROUND_KEY_4;
    480 }
    481 
    482 void aes_encrypt_nb_6(CRYPT_aes_context* ctx, unsigned int* block) {
    483   int i;
    484   const int C1 = 1, C2 = 2, C3 = 3, Nb = 6;
    485   unsigned int* keysched = ctx->keysched;
    486   unsigned int newstate[6];
    487   for (i = 0; i < ctx->Nr - 1; i++) {
    488     ADD_ROUND_KEY_6;
    489     MAKEWORD(0);
    490     MAKEWORD(1);
    491     MAKEWORD(2);
    492     MAKEWORD(3);
    493     MAKEWORD(4);
    494     MAKEWORD(5);
    495     MOVEWORD(0);
    496     MOVEWORD(1);
    497     MOVEWORD(2);
    498     MOVEWORD(3);
    499     MOVEWORD(4);
    500     MOVEWORD(5);
    501   }
    502   ADD_ROUND_KEY_6;
    503   LASTWORD(0);
    504   LASTWORD(1);
    505   LASTWORD(2);
    506   LASTWORD(3);
    507   LASTWORD(4);
    508   LASTWORD(5);
    509   MOVEWORD(0);
    510   MOVEWORD(1);
    511   MOVEWORD(2);
    512   MOVEWORD(3);
    513   MOVEWORD(4);
    514   MOVEWORD(5);
    515   ADD_ROUND_KEY_6;
    516 }
    517 
    518 void aes_encrypt_nb_8(CRYPT_aes_context* ctx, unsigned int* block) {
    519   int i;
    520   const int C1 = 1, C2 = 3, C3 = 4, Nb = 8;
    521   unsigned int* keysched = ctx->keysched;
    522   unsigned int newstate[8];
    523   for (i = 0; i < ctx->Nr - 1; i++) {
    524     ADD_ROUND_KEY_8;
    525     MAKEWORD(0);
    526     MAKEWORD(1);
    527     MAKEWORD(2);
    528     MAKEWORD(3);
    529     MAKEWORD(4);
    530     MAKEWORD(5);
    531     MAKEWORD(6);
    532     MAKEWORD(7);
    533     MOVEWORD(0);
    534     MOVEWORD(1);
    535     MOVEWORD(2);
    536     MOVEWORD(3);
    537     MOVEWORD(4);
    538     MOVEWORD(5);
    539     MOVEWORD(6);
    540     MOVEWORD(7);
    541   }
    542   ADD_ROUND_KEY_8;
    543   LASTWORD(0);
    544   LASTWORD(1);
    545   LASTWORD(2);
    546   LASTWORD(3);
    547   LASTWORD(4);
    548   LASTWORD(5);
    549   LASTWORD(6);
    550   LASTWORD(7);
    551   MOVEWORD(0);
    552   MOVEWORD(1);
    553   MOVEWORD(2);
    554   MOVEWORD(3);
    555   MOVEWORD(4);
    556   MOVEWORD(5);
    557   MOVEWORD(6);
    558   MOVEWORD(7);
    559   ADD_ROUND_KEY_8;
    560 }
    561 #undef MAKEWORD
    562 #undef LASTWORD
    563 #define MAKEWORD(i)                                         \
    564   (newstate[i] = (D0[(block[i] >> 24) & 0xFF] ^             \
    565                   D1[(block[(i + C1) % Nb] >> 16) & 0xFF] ^ \
    566                   D2[(block[(i + C2) % Nb] >> 8) & 0xFF] ^  \
    567                   D3[block[(i + C3) % Nb] & 0xFF]))
    568 #define LASTWORD(i)                                                     \
    569   (newstate[i] = (Sboxinv[(block[i] >> 24) & 0xFF] << 24) |             \
    570                  (Sboxinv[(block[(i + C1) % Nb] >> 16) & 0xFF] << 16) | \
    571                  (Sboxinv[(block[(i + C2) % Nb] >> 8) & 0xFF] << 8) |   \
    572                  (Sboxinv[(block[(i + C3) % Nb]) & 0xFF]))
    573 
    574 void aes_decrypt_nb_4(CRYPT_aes_context* ctx, unsigned int* block) {
    575   int i;
    576   const int C1 = 4 - 1, C2 = 4 - 2, C3 = 4 - 3, Nb = 4;
    577   unsigned int* keysched = ctx->invkeysched;
    578   unsigned int newstate[4];
    579   for (i = 0; i < ctx->Nr - 1; i++) {
    580     ADD_ROUND_KEY_4;
    581     MAKEWORD(0);
    582     MAKEWORD(1);
    583     MAKEWORD(2);
    584     MAKEWORD(3);
    585     MOVEWORD(0);
    586     MOVEWORD(1);
    587     MOVEWORD(2);
    588     MOVEWORD(3);
    589   }
    590   ADD_ROUND_KEY_4;
    591   LASTWORD(0);
    592   LASTWORD(1);
    593   LASTWORD(2);
    594   LASTWORD(3);
    595   MOVEWORD(0);
    596   MOVEWORD(1);
    597   MOVEWORD(2);
    598   MOVEWORD(3);
    599   ADD_ROUND_KEY_4;
    600 }
    601 
    602 void aes_decrypt_nb_6(CRYPT_aes_context* ctx, unsigned int* block) {
    603   int i;
    604   const int C1 = 6 - 1, C2 = 6 - 2, C3 = 6 - 3, Nb = 6;
    605   unsigned int* keysched = ctx->invkeysched;
    606   unsigned int newstate[6];
    607   for (i = 0; i < ctx->Nr - 1; i++) {
    608     ADD_ROUND_KEY_6;
    609     MAKEWORD(0);
    610     MAKEWORD(1);
    611     MAKEWORD(2);
    612     MAKEWORD(3);
    613     MAKEWORD(4);
    614     MAKEWORD(5);
    615     MOVEWORD(0);
    616     MOVEWORD(1);
    617     MOVEWORD(2);
    618     MOVEWORD(3);
    619     MOVEWORD(4);
    620     MOVEWORD(5);
    621   }
    622   ADD_ROUND_KEY_6;
    623   LASTWORD(0);
    624   LASTWORD(1);
    625   LASTWORD(2);
    626   LASTWORD(3);
    627   LASTWORD(4);
    628   LASTWORD(5);
    629   MOVEWORD(0);
    630   MOVEWORD(1);
    631   MOVEWORD(2);
    632   MOVEWORD(3);
    633   MOVEWORD(4);
    634   MOVEWORD(5);
    635   ADD_ROUND_KEY_6;
    636 }
    637 
    638 void aes_decrypt_nb_8(CRYPT_aes_context* ctx, unsigned int* block) {
    639   int i;
    640   const int C1 = 8 - 1, C2 = 8 - 3, C3 = 8 - 4, Nb = 8;
    641   unsigned int* keysched = ctx->invkeysched;
    642   unsigned int newstate[8];
    643   for (i = 0; i < ctx->Nr - 1; i++) {
    644     ADD_ROUND_KEY_8;
    645     MAKEWORD(0);
    646     MAKEWORD(1);
    647     MAKEWORD(2);
    648     MAKEWORD(3);
    649     MAKEWORD(4);
    650     MAKEWORD(5);
    651     MAKEWORD(6);
    652     MAKEWORD(7);
    653     MOVEWORD(0);
    654     MOVEWORD(1);
    655     MOVEWORD(2);
    656     MOVEWORD(3);
    657     MOVEWORD(4);
    658     MOVEWORD(5);
    659     MOVEWORD(6);
    660     MOVEWORD(7);
    661   }
    662   ADD_ROUND_KEY_8;
    663   LASTWORD(0);
    664   LASTWORD(1);
    665   LASTWORD(2);
    666   LASTWORD(3);
    667   LASTWORD(4);
    668   LASTWORD(5);
    669   LASTWORD(6);
    670   LASTWORD(7);
    671   MOVEWORD(0);
    672   MOVEWORD(1);
    673   MOVEWORD(2);
    674   MOVEWORD(3);
    675   MOVEWORD(4);
    676   MOVEWORD(5);
    677   MOVEWORD(6);
    678   MOVEWORD(7);
    679   ADD_ROUND_KEY_8;
    680 }
    681 #undef MAKEWORD
    682 #undef LASTWORD
    683 void aes_setup(CRYPT_aes_context* ctx,
    684                int blocklen,
    685                const unsigned char* key,
    686                int keylen) {
    687   int i, j, Nk, rconst;
    688   ASSERT(blocklen == 16 || blocklen == 24 || blocklen == 32);
    689   ASSERT(keylen == 16 || keylen == 24 || keylen == 32);
    690   Nk = keylen / 4;
    691   ctx->Nb = blocklen / 4;
    692   ctx->Nr = 6 + (ctx->Nb > Nk ? ctx->Nb : Nk);
    693   if (ctx->Nb == 8) {
    694     ctx->encrypt = aes_encrypt_nb_8, ctx->decrypt = aes_decrypt_nb_8;
    695   } else if (ctx->Nb == 6) {
    696     ctx->encrypt = aes_encrypt_nb_6, ctx->decrypt = aes_decrypt_nb_6;
    697   } else if (ctx->Nb == 4) {
    698     ctx->encrypt = aes_encrypt_nb_4, ctx->decrypt = aes_decrypt_nb_4;
    699   }
    700   rconst = 1;
    701   for (i = 0; i < (ctx->Nr + 1) * ctx->Nb; i++) {
    702     if (i < Nk) {
    703       ctx->keysched[i] = GET_32BIT_MSB_FIRST(key + 4 * i);
    704     } else {
    705       unsigned int temp = ctx->keysched[i - 1];
    706       if (i % Nk == 0) {
    707         int a, b, c, d;
    708         a = (temp >> 16) & 0xFF;
    709         b = (temp >> 8) & 0xFF;
    710         c = (temp >> 0) & 0xFF;
    711         d = (temp >> 24) & 0xFF;
    712         temp = Sbox[a] ^ rconst;
    713         temp = (temp << 8) | Sbox[b];
    714         temp = (temp << 8) | Sbox[c];
    715         temp = (temp << 8) | Sbox[d];
    716         rconst = mulby2(rconst);
    717       } else if (i % Nk == 4 && Nk > 6) {
    718         int a, b, c, d;
    719         a = (temp >> 24) & 0xFF;
    720         b = (temp >> 16) & 0xFF;
    721         c = (temp >> 8) & 0xFF;
    722         d = (temp >> 0) & 0xFF;
    723         temp = Sbox[a];
    724         temp = (temp << 8) | Sbox[b];
    725         temp = (temp << 8) | Sbox[c];
    726         temp = (temp << 8) | Sbox[d];
    727       }
    728       ctx->keysched[i] = ctx->keysched[i - Nk] ^ temp;
    729     }
    730   }
    731   for (i = 0; i <= ctx->Nr; i++) {
    732     for (j = 0; j < ctx->Nb; j++) {
    733       unsigned int temp;
    734       temp = ctx->keysched[(ctx->Nr - i) * ctx->Nb + j];
    735       if (i != 0 && i != ctx->Nr) {
    736         int a, b, c, d;
    737         a = (temp >> 24) & 0xFF;
    738         b = (temp >> 16) & 0xFF;
    739         c = (temp >> 8) & 0xFF;
    740         d = (temp >> 0) & 0xFF;
    741         temp = D0[Sbox[a]];
    742         temp ^= D1[Sbox[b]];
    743         temp ^= D2[Sbox[c]];
    744         temp ^= D3[Sbox[d]];
    745       }
    746       ctx->invkeysched[i * ctx->Nb + j] = temp;
    747     }
    748   }
    749 }
    750 void aes_decrypt(CRYPT_aes_context* ctx, unsigned int* block) {
    751   ctx->decrypt(ctx, block);
    752 }
    753 void aes_decrypt_cbc(unsigned char* dest,
    754                      const unsigned char* src,
    755                      int len,
    756                      CRYPT_aes_context* ctx) {
    757   unsigned int iv[4], x[4], ct[4];
    758   int i;
    759   ASSERT((len & 15) == 0);
    760   memcpy(iv, ctx->iv, sizeof(iv));
    761   while (len > 0) {
    762     for (i = 0; i < 4; i++) {
    763       x[i] = ct[i] = GET_32BIT_MSB_FIRST(src + 4 * i);
    764     }
    765     aes_decrypt(ctx, x);
    766     for (i = 0; i < 4; i++) {
    767       PUT_32BIT_MSB_FIRST(dest + 4 * i, iv[i] ^ x[i]);
    768       iv[i] = ct[i];
    769     }
    770     dest += 16;
    771     src += 16;
    772     len -= 16;
    773   }
    774   memcpy(ctx->iv, iv, sizeof(iv));
    775 }
    776 
    777 void aes_encrypt(CRYPT_aes_context* ctx, unsigned int* block) {
    778   ctx->encrypt(ctx, block);
    779 }
    780 
    781 void aes_encrypt_cbc(unsigned char* dest,
    782                      const unsigned char* src,
    783                      int len,
    784                      CRYPT_aes_context* ctx) {
    785   unsigned int iv[4];
    786   int i;
    787   ASSERT((len & 15) == 0);
    788   memcpy(iv, ctx->iv, sizeof(iv));
    789   while (len > 0) {
    790     for (i = 0; i < 4; i++) {
    791       iv[i] ^= GET_32BIT_MSB_FIRST(src + 4 * i);
    792     }
    793     aes_encrypt(ctx, iv);
    794     for (i = 0; i < 4; i++) {
    795       PUT_32BIT_MSB_FIRST(dest + 4 * i, iv[i]);
    796     }
    797     dest += 16;
    798     src += 16;
    799     len -= 16;
    800   }
    801   memcpy(ctx->iv, iv, sizeof(iv));
    802 }
    803 
    804 }  // namespace
    805 
    806 void CRYPT_AESSetKey(CRYPT_aes_context* context,
    807                      uint32_t blocklen,
    808                      const uint8_t* key,
    809                      uint32_t keylen,
    810                      bool bEncrypt) {
    811   aes_setup(context, blocklen, key, keylen);
    812 }
    813 
    814 void CRYPT_AESSetIV(CRYPT_aes_context* context, const uint8_t* iv) {
    815   for (int i = 0; i < context->Nb; i++)
    816     context->iv[i] = GET_32BIT_MSB_FIRST(iv + 4 * i);
    817 }
    818 
    819 void CRYPT_AESDecrypt(CRYPT_aes_context* context,
    820                       uint8_t* dest,
    821                       const uint8_t* src,
    822                       uint32_t len) {
    823   aes_decrypt_cbc(dest, src, len, context);
    824 }
    825 
    826 void CRYPT_AESEncrypt(CRYPT_aes_context* context,
    827                       uint8_t* dest,
    828                       const uint8_t* src,
    829                       uint32_t len) {
    830   aes_encrypt_cbc(dest, src, len, context);
    831 }
    832