📄 aestab.c
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/*
-------------------------------------------------------------------------
Copyright (c) 2001, Dr Brian Gladman <brg@gladman.uk.net>, Worcester, UK.
All rights reserved.
TERMS
Redistribution and use in source and binary forms, with or without
modification, are permitted subject to the following conditions:
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. The copyright holder's name must not be used to endorse or promote
any products derived from this software without his specific prior
written permission.
This software is provided 'as is' with no express or implied warranties
of correctness or fitness for purpose.
-------------------------------------------------------------------------
Issue Date: 01/02/2002
*/
#if defined( INC_ALL ) || defined( INC_CHILD )
#include "aesopt.h"
#else
#include "crypt/aesopt.h"
#endif /* Compiler-specific includes */
#undef prefx
#if defined(FIXED_TABLES)
#define prefx const
#define sb_data(w) \
w(63), w(7c), w(77), w(7b), w(f2), w(6b), w(6f), w(c5),\
w(30), w(01), w(67), w(2b), w(fe), w(d7), w(ab), w(76),\
w(ca), w(82), w(c9), w(7d), w(fa), w(59), w(47), w(f0),\
w(ad), w(d4), w(a2), w(af), w(9c), w(a4), w(72), w(c0),\
w(b7), w(fd), w(93), w(26), w(36), w(3f), w(f7), w(cc),\
w(34), w(a5), w(e5), w(f1), w(71), w(d8), w(31), w(15),\
w(04), w(c7), w(23), w(c3), w(18), w(96), w(05), w(9a),\
w(07), w(12), w(80), w(e2), w(eb), w(27), w(b2), w(75),\
w(09), w(83), w(2c), w(1a), w(1b), w(6e), w(5a), w(a0),\
w(52), w(3b), w(d6), w(b3), w(29), w(e3), w(2f), w(84),\
w(53), w(d1), w(00), w(ed), w(20), w(fc), w(b1), w(5b),\
w(6a), w(cb), w(be), w(39), w(4a), w(4c), w(58), w(cf),\
w(d0), w(ef), w(aa), w(fb), w(43), w(4d), w(33), w(85),\
w(45), w(f9), w(02), w(7f), w(50), w(3c), w(9f), w(a8),\
w(51), w(a3), w(40), w(8f), w(92), w(9d), w(38), w(f5),\
w(bc), w(b6), w(da), w(21), w(10), w(ff), w(f3), w(d2),\
w(cd), w(0c), w(13), w(ec), w(5f), w(97), w(44), w(17),\
w(c4), w(a7), w(7e), w(3d), w(64), w(5d), w(19), w(73),\
w(60), w(81), w(4f), w(dc), w(22), w(2a), w(90), w(88),\
w(46), w(ee), w(b8), w(14), w(de), w(5e), w(0b), w(db),\
w(e0), w(32), w(3a), w(0a), w(49), w(06), w(24), w(5c),\
w(c2), w(d3), w(ac), w(62), w(91), w(95), w(e4), w(79),\
w(e7), w(c8), w(37), w(6d), w(8d), w(d5), w(4e), w(a9),\
w(6c), w(56), w(f4), w(ea), w(65), w(7a), w(ae), w(08),\
w(ba), w(78), w(25), w(2e), w(1c), w(a6), w(b4), w(c6),\
w(e8), w(dd), w(74), w(1f), w(4b), w(bd), w(8b), w(8a),\
w(70), w(3e), w(b5), w(66), w(48), w(03), w(f6), w(0e),\
w(61), w(35), w(57), w(b9), w(86), w(c1), w(1d), w(9e),\
w(e1), w(f8), w(98), w(11), w(69), w(d9), w(8e), w(94),\
w(9b), w(1e), w(87), w(e9), w(ce), w(55), w(28), w(df),\
w(8c), w(a1), w(89), w(0d), w(bf), w(e6), w(42), w(68),\
w(41), w(99), w(2d), w(0f), w(b0), w(54), w(bb), w(16)
#define isb_data(w) \
w(52), w(09), w(6a), w(d5), w(30), w(36), w(a5), w(38),\
w(bf), w(40), w(a3), w(9e), w(81), w(f3), w(d7), w(fb),\
w(7c), w(e3), w(39), w(82), w(9b), w(2f), w(ff), w(87),\
w(34), w(8e), w(43), w(44), w(c4), w(de), w(e9), w(cb),\
w(54), w(7b), w(94), w(32), w(a6), w(c2), w(23), w(3d),\
w(ee), w(4c), w(95), w(0b), w(42), w(fa), w(c3), w(4e),\
w(08), w(2e), w(a1), w(66), w(28), w(d9), w(24), w(b2),\
w(76), w(5b), w(a2), w(49), w(6d), w(8b), w(d1), w(25),\
w(72), w(f8), w(f6), w(64), w(86), w(68), w(98), w(16),\
w(d4), w(a4), w(5c), w(cc), w(5d), w(65), w(b6), w(92),\
w(6c), w(70), w(48), w(50), w(fd), w(ed), w(b9), w(da),\
w(5e), w(15), w(46), w(57), w(a7), w(8d), w(9d), w(84),\
w(90), w(d8), w(ab), w(00), w(8c), w(bc), w(d3), w(0a),\
w(f7), w(e4), w(58), w(05), w(b8), w(b3), w(45), w(06),\
w(d0), w(2c), w(1e), w(8f), w(ca), w(3f), w(0f), w(02),\
w(c1), w(af), w(bd), w(03), w(01), w(13), w(8a), w(6b),\
w(3a), w(91), w(11), w(41), w(4f), w(67), w(dc), w(ea),\
w(97), w(f2), w(cf), w(ce), w(f0), w(b4), w(e6), w(73),\
w(96), w(ac), w(74), w(22), w(e7), w(ad), w(35), w(85),\
w(e2), w(f9), w(37), w(e8), w(1c), w(75), w(df), w(6e),\
w(47), w(f1), w(1a), w(71), w(1d), w(29), w(c5), w(89),\
w(6f), w(b7), w(62), w(0e), w(aa), w(18), w(be), w(1b),\
w(fc), w(56), w(3e), w(4b), w(c6), w(d2), w(79), w(20),\
w(9a), w(db), w(c0), w(fe), w(78), w(cd), w(5a), w(f4),\
w(1f), w(dd), w(a8), w(33), w(88), w(07), w(c7), w(31),\
w(b1), w(12), w(10), w(59), w(27), w(80), w(ec), w(5f),\
w(60), w(51), w(7f), w(a9), w(19), w(b5), w(4a), w(0d),\
w(2d), w(e5), w(7a), w(9f), w(93), w(c9), w(9c), w(ef),\
w(a0), w(e0), w(3b), w(4d), w(ae), w(2a), w(f5), w(b0),\
w(c8), w(eb), w(bb), w(3c), w(83), w(53), w(99), w(61),\
w(17), w(2b), w(04), w(7e), w(ba), w(77), w(d6), w(26),\
w(e1), w(69), w(14), w(63), w(55), w(21), w(0c), w(7d),
#define mm_data(w) \
w(00), w(01), w(02), w(03), w(04), w(05), w(06), w(07),\
w(08), w(09), w(0a), w(0b), w(0c), w(0d), w(0e), w(0f),\
w(10), w(11), w(12), w(13), w(14), w(15), w(16), w(17),\
w(18), w(19), w(1a), w(1b), w(1c), w(1d), w(1e), w(1f),\
w(20), w(21), w(22), w(23), w(24), w(25), w(26), w(27),\
w(28), w(29), w(2a), w(2b), w(2c), w(2d), w(2e), w(2f),\
w(30), w(31), w(32), w(33), w(34), w(35), w(36), w(37),\
w(38), w(39), w(3a), w(3b), w(3c), w(3d), w(3e), w(3f),\
w(40), w(41), w(42), w(43), w(44), w(45), w(46), w(47),\
w(48), w(49), w(4a), w(4b), w(4c), w(4d), w(4e), w(4f),\
w(50), w(51), w(52), w(53), w(54), w(55), w(56), w(57),\
w(58), w(59), w(5a), w(5b), w(5c), w(5d), w(5e), w(5f),\
w(60), w(61), w(62), w(63), w(64), w(65), w(66), w(67),\
w(68), w(69), w(6a), w(6b), w(6c), w(6d), w(6e), w(6f),\
w(70), w(71), w(72), w(73), w(74), w(75), w(76), w(77),\
w(78), w(79), w(7a), w(7b), w(7c), w(7d), w(7e), w(7f),\
w(80), w(81), w(82), w(83), w(84), w(85), w(86), w(87),\
w(88), w(89), w(8a), w(8b), w(8c), w(8d), w(8e), w(8f),\
w(90), w(91), w(92), w(93), w(94), w(95), w(96), w(97),\
w(98), w(99), w(9a), w(9b), w(9c), w(9d), w(9e), w(9f),\
w(a0), w(a1), w(a2), w(a3), w(a4), w(a5), w(a6), w(a7),\
w(a8), w(a9), w(aa), w(ab), w(ac), w(ad), w(ae), w(af),\
w(b0), w(b1), w(b2), w(b3), w(b4), w(b5), w(b6), w(b7),\
w(b8), w(b9), w(ba), w(bb), w(bc), w(bd), w(be), w(bf),\
w(c0), w(c1), w(c2), w(c3), w(c4), w(c5), w(c6), w(c7),\
w(c8), w(c9), w(ca), w(cb), w(cc), w(cd), w(ce), w(cf),\
w(d0), w(d1), w(d2), w(d3), w(d4), w(d5), w(d6), w(d7),\
w(d8), w(d9), w(da), w(db), w(dc), w(dd), w(de), w(df),\
w(e0), w(e1), w(e2), w(e3), w(e4), w(e5), w(e6), w(e7),\
w(e8), w(e9), w(ea), w(eb), w(ec), w(ed), w(ee), w(ef),\
w(f0), w(f1), w(f2), w(f3), w(f4), w(f5), w(f6), w(f7),\
w(f8), w(f9), w(fa), w(fb), w(fc), w(fd), w(fe), w(ff)
#define h0(p) ((unsigned char)0x##p)
#define f2(p) ((((p) & 0x7f) << 1) ^ ((p) & 0x80 ? 0x1b : 0))
#define f3(p) ((p) ^ f2(p))
#define f9(p) ((p) ^ f2(f2(f2(p))))
#define fb(p) ((p) ^ f2((p) ^ f2(f2(p))))
#define fd(p) ((p) ^ f2(f2((p) ^ f2(p))))
#define fe(p) f2((p) ^ f2((p) ^ f2(p)))
/*
These defines are used to ensure tables are generated in the
right format depending on the internal byte order required
*/
#define w0(p) bytes2word(h0(p), 0, 0, 0)
#define w1(p) bytes2word(0, h0(p), 0, 0)
#define w2(p) bytes2word(0, 0, h0(p), 0)
#define w3(p) bytes2word(0, 0, 0, h0(p))
/*
Number of elements required in this table for different
block and key lengths is:
Rcon Table key length (bytes)
Length 16 20 24 28 32
---------------------
block 16 | 10 9 8 7 7
length 20 | 14 11 10 9 9
(bytes) 24 | 19 15 12 11 11
28 | 24 19 16 13 13
32 | 29 23 19 17 14
this table can be a table of bytes if the key schedule
code is adjusted accordingly
*/
#define u0(p) bytes2word(f2(h0(p)), h0(p), h0(p), f3(h0(p)))
#define u1(p) bytes2word(f3(h0(p)), f2(h0(p)), h0(p), h0(p))
#define u2(p) bytes2word(h0(p), f3(h0(p)), f2(h0(p)), h0(p))
#define u3(p) bytes2word(h0(p), h0(p), f3(h0(p)), f2(h0(p)))
#define v0(p) bytes2word(fe(h0(p)), f9(h0(p)), fd(h0(p)), fb(h0(p)))
#define v1(p) bytes2word(fb(h0(p)), fe(h0(p)), f9(h0(p)), fd(h0(p)))
#define v2(p) bytes2word(fd(h0(p)), fb(h0(p)), fe(h0(p)), f9(h0(p)))
#define v3(p) bytes2word(f9(h0(p)), fd(h0(p)), fb(h0(p)), fe(h0(p)))
prefx uint32_t rcon_tab[29] =
{
w0(01), w0(02), w0(04), w0(08),
w0(10), w0(20), w0(40), w0(80),
w0(1b), w0(36), w0(6c), w0(d8),
w0(ab), w0(4d), w0(9a), w0(2f),
w0(5e), w0(bc), w0(63), w0(c6),
w0(97), w0(35), w0(6a), w0(d4),
w0(b3), w0(7d), w0(fa), w0(ef),
w0(c5)
};
#ifdef SBX_SET
prefx uint8_t s_box[256] = { sb_data(h0) };
#endif
#ifdef ISB_SET
prefx uint8_t inv_s_box[256] = { isb_data(h0) };
#endif
#ifdef FT1_SET
prefx uint32_t ft_tab[256] = { sb_data(u0) };
#endif
#ifdef FT4_SET
prefx uint32_t ft_tab[4][256] =
{ { sb_data(u0) }, { sb_data(u1) }, { sb_data(u2) }, { sb_data(u3) } };
#endif
#ifdef FL1_SET
prefx uint32_t fl_tab[256] = { sb_data(w0) };
#endif
#ifdef FL4_SET
prefx uint32_t fl_tab[4][256] =
{ { sb_data(w0) }, { sb_data(w1) }, { sb_data(w2) }, { sb_data(w3) } };
#endif
#ifdef IT1_SET
prefx uint32_t it_tab[256] = { isb_data(v0) };
#endif
#ifdef IT4_SET
prefx uint32_t it_tab[4][256] =
{ { isb_data(v0) }, { isb_data(v1) }, { isb_data(v2) }, { isb_data(v3) } };
#endif
#ifdef IL1_SET
prefx uint32_t il_tab[256] = { isb_data(w0) };
#endif
#ifdef IL4_SET
prefx uint32_t il_tab[4][256] =
{ { isb_data(w0) }, { isb_data(w1) }, { isb_data(w2) }, { isb_data(w3) } };
#endif
#ifdef LS1_SET
prefx uint32_t ls_tab[256] = { sb_data(w0) };
#endif
#ifdef LS4_SET
prefx uint32_t ls_tab[4][256] =
{ { sb_data(w0) }, { sb_data(w1) }, { sb_data(w2) }, { sb_data(w3) } };
#endif
#ifdef IM1_SET
prefx uint32_t im_tab[256] = { mm_data(v0) };
#endif
#ifdef IM4_SET
prefx uint32_t im_tab[4][256] =
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