(C) Relatively high density file backups on paper. Cross-platform CLI port of Ollydbg's Paperback from Windows and Borland C.
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ae_aes.cpp 26KB

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  1. /*
  2. * FIPS-197 compliant AES implementation
  3. *
  4. * Copyright (C) 2001-2004 Christophe Devine
  5. *
  6. * This program is free software; you can redistribute it and/or modify
  7. * it under the terms of the GNU General Public License as published by
  8. * the Free Software Foundation; either version 2 of the License, or
  9. * (at your option) any later version.
  10. *
  11. * This program is distributed in the hope that it will be useful,
  12. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14. * GNU General Public License for more details.
  15. *
  16. * You should have received a copy of the GNU General Public License
  17. * along with this program; if not, write to the Free Software
  18. * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19. */
  20. // Modifications by Oleh Yuschuk:
  21. // test mode and on-the-fly tables removed;
  22. // uint8 replaced by uchar; uint32 replaced by ulong
  23. // Modifications by Surkeh
  24. // ulong changed back to uint32_t
  25. #include "aes.h"
  26. /* forward S-box */
  27. static const uint32_t FSb[256] =
  28. {
  29. 0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5,
  30. 0x30, 0x01, 0x67, 0x2B, 0xFE, 0xD7, 0xAB, 0x76,
  31. 0xCA, 0x82, 0xC9, 0x7D, 0xFA, 0x59, 0x47, 0xF0,
  32. 0xAD, 0xD4, 0xA2, 0xAF, 0x9C, 0xA4, 0x72, 0xC0,
  33. 0xB7, 0xFD, 0x93, 0x26, 0x36, 0x3F, 0xF7, 0xCC,
  34. 0x34, 0xA5, 0xE5, 0xF1, 0x71, 0xD8, 0x31, 0x15,
  35. 0x04, 0xC7, 0x23, 0xC3, 0x18, 0x96, 0x05, 0x9A,
  36. 0x07, 0x12, 0x80, 0xE2, 0xEB, 0x27, 0xB2, 0x75,
  37. 0x09, 0x83, 0x2C, 0x1A, 0x1B, 0x6E, 0x5A, 0xA0,
  38. 0x52, 0x3B, 0xD6, 0xB3, 0x29, 0xE3, 0x2F, 0x84,
  39. 0x53, 0xD1, 0x00, 0xED, 0x20, 0xFC, 0xB1, 0x5B,
  40. 0x6A, 0xCB, 0xBE, 0x39, 0x4A, 0x4C, 0x58, 0xCF,
  41. 0xD0, 0xEF, 0xAA, 0xFB, 0x43, 0x4D, 0x33, 0x85,
  42. 0x45, 0xF9, 0x02, 0x7F, 0x50, 0x3C, 0x9F, 0xA8,
  43. 0x51, 0xA3, 0x40, 0x8F, 0x92, 0x9D, 0x38, 0xF5,
  44. 0xBC, 0xB6, 0xDA, 0x21, 0x10, 0xFF, 0xF3, 0xD2,
  45. 0xCD, 0x0C, 0x13, 0xEC, 0x5F, 0x97, 0x44, 0x17,
  46. 0xC4, 0xA7, 0x7E, 0x3D, 0x64, 0x5D, 0x19, 0x73,
  47. 0x60, 0x81, 0x4F, 0xDC, 0x22, 0x2A, 0x90, 0x88,
  48. 0x46, 0xEE, 0xB8, 0x14, 0xDE, 0x5E, 0x0B, 0xDB,
  49. 0xE0, 0x32, 0x3A, 0x0A, 0x49, 0x06, 0x24, 0x5C,
  50. 0xC2, 0xD3, 0xAC, 0x62, 0x91, 0x95, 0xE4, 0x79,
  51. 0xE7, 0xC8, 0x37, 0x6D, 0x8D, 0xD5, 0x4E, 0xA9,
  52. 0x6C, 0x56, 0xF4, 0xEA, 0x65, 0x7A, 0xAE, 0x08,
  53. 0xBA, 0x78, 0x25, 0x2E, 0x1C, 0xA6, 0xB4, 0xC6,
  54. 0xE8, 0xDD, 0x74, 0x1F, 0x4B, 0xBD, 0x8B, 0x8A,
  55. 0x70, 0x3E, 0xB5, 0x66, 0x48, 0x03, 0xF6, 0x0E,
  56. 0x61, 0x35, 0x57, 0xB9, 0x86, 0xC1, 0x1D, 0x9E,
  57. 0xE1, 0xF8, 0x98, 0x11, 0x69, 0xD9, 0x8E, 0x94,
  58. 0x9B, 0x1E, 0x87, 0xE9, 0xCE, 0x55, 0x28, 0xDF,
  59. 0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68,
  60. 0x41, 0x99, 0x2D, 0x0F, 0xB0, 0x54, 0xBB, 0x16
  61. };
  62. /* forward tables */
  63. #define FT \
  64. \
  65. V(C6,63,63,A5), V(F8,7C,7C,84), V(EE,77,77,99), V(F6,7B,7B,8D), \
  66. V(FF,F2,F2,0D), V(D6,6B,6B,BD), V(DE,6F,6F,B1), V(91,C5,C5,54), \
  67. V(60,30,30,50), V(02,01,01,03), V(CE,67,67,A9), V(56,2B,2B,7D), \
  68. V(E7,FE,FE,19), V(B5,D7,D7,62), V(4D,AB,AB,E6), V(EC,76,76,9A), \
  69. V(8F,CA,CA,45), V(1F,82,82,9D), V(89,C9,C9,40), V(FA,7D,7D,87), \
  70. V(EF,FA,FA,15), V(B2,59,59,EB), V(8E,47,47,C9), V(FB,F0,F0,0B), \
  71. V(41,AD,AD,EC), V(B3,D4,D4,67), V(5F,A2,A2,FD), V(45,AF,AF,EA), \
  72. V(23,9C,9C,BF), V(53,A4,A4,F7), V(E4,72,72,96), V(9B,C0,C0,5B), \
  73. V(75,B7,B7,C2), V(E1,FD,FD,1C), V(3D,93,93,AE), V(4C,26,26,6A), \
  74. V(6C,36,36,5A), V(7E,3F,3F,41), V(F5,F7,F7,02), V(83,CC,CC,4F), \
  75. V(68,34,34,5C), V(51,A5,A5,F4), V(D1,E5,E5,34), V(F9,F1,F1,08), \
  76. V(E2,71,71,93), V(AB,D8,D8,73), V(62,31,31,53), V(2A,15,15,3F), \
  77. V(08,04,04,0C), V(95,C7,C7,52), V(46,23,23,65), V(9D,C3,C3,5E), \
  78. V(30,18,18,28), V(37,96,96,A1), V(0A,05,05,0F), V(2F,9A,9A,B5), \
  79. V(0E,07,07,09), V(24,12,12,36), V(1B,80,80,9B), V(DF,E2,E2,3D), \
  80. V(CD,EB,EB,26), V(4E,27,27,69), V(7F,B2,B2,CD), V(EA,75,75,9F), \
  81. V(12,09,09,1B), V(1D,83,83,9E), V(58,2C,2C,74), V(34,1A,1A,2E), \
  82. V(36,1B,1B,2D), V(DC,6E,6E,B2), V(B4,5A,5A,EE), V(5B,A0,A0,FB), \
  83. V(A4,52,52,F6), V(76,3B,3B,4D), V(B7,D6,D6,61), V(7D,B3,B3,CE), \
  84. V(52,29,29,7B), V(DD,E3,E3,3E), V(5E,2F,2F,71), V(13,84,84,97), \
  85. V(A6,53,53,F5), V(B9,D1,D1,68), V(00,00,00,00), V(C1,ED,ED,2C), \
  86. V(40,20,20,60), V(E3,FC,FC,1F), V(79,B1,B1,C8), V(B6,5B,5B,ED), \
  87. V(D4,6A,6A,BE), V(8D,CB,CB,46), V(67,BE,BE,D9), V(72,39,39,4B), \
  88. V(94,4A,4A,DE), V(98,4C,4C,D4), V(B0,58,58,E8), V(85,CF,CF,4A), \
  89. V(BB,D0,D0,6B), V(C5,EF,EF,2A), V(4F,AA,AA,E5), V(ED,FB,FB,16), \
  90. V(86,43,43,C5), V(9A,4D,4D,D7), V(66,33,33,55), V(11,85,85,94), \
  91. V(8A,45,45,CF), V(E9,F9,F9,10), V(04,02,02,06), V(FE,7F,7F,81), \
  92. V(A0,50,50,F0), V(78,3C,3C,44), V(25,9F,9F,BA), V(4B,A8,A8,E3), \
  93. V(A2,51,51,F3), V(5D,A3,A3,FE), V(80,40,40,C0), V(05,8F,8F,8A), \
  94. V(3F,92,92,AD), V(21,9D,9D,BC), V(70,38,38,48), V(F1,F5,F5,04), \
  95. V(63,BC,BC,DF), V(77,B6,B6,C1), V(AF,DA,DA,75), V(42,21,21,63), \
  96. V(20,10,10,30), V(E5,FF,FF,1A), V(FD,F3,F3,0E), V(BF,D2,D2,6D), \
  97. V(81,CD,CD,4C), V(18,0C,0C,14), V(26,13,13,35), V(C3,EC,EC,2F), \
  98. V(BE,5F,5F,E1), V(35,97,97,A2), V(88,44,44,CC), V(2E,17,17,39), \
  99. V(93,C4,C4,57), V(55,A7,A7,F2), V(FC,7E,7E,82), V(7A,3D,3D,47), \
  100. V(C8,64,64,AC), V(BA,5D,5D,E7), V(32,19,19,2B), V(E6,73,73,95), \
  101. V(C0,60,60,A0), V(19,81,81,98), V(9E,4F,4F,D1), V(A3,DC,DC,7F), \
  102. V(44,22,22,66), V(54,2A,2A,7E), V(3B,90,90,AB), V(0B,88,88,83), \
  103. V(8C,46,46,CA), V(C7,EE,EE,29), V(6B,B8,B8,D3), V(28,14,14,3C), \
  104. V(A7,DE,DE,79), V(BC,5E,5E,E2), V(16,0B,0B,1D), V(AD,DB,DB,76), \
  105. V(DB,E0,E0,3B), V(64,32,32,56), V(74,3A,3A,4E), V(14,0A,0A,1E), \
  106. V(92,49,49,DB), V(0C,06,06,0A), V(48,24,24,6C), V(B8,5C,5C,E4), \
  107. V(9F,C2,C2,5D), V(BD,D3,D3,6E), V(43,AC,AC,EF), V(C4,62,62,A6), \
  108. V(39,91,91,A8), V(31,95,95,A4), V(D3,E4,E4,37), V(F2,79,79,8B), \
  109. V(D5,E7,E7,32), V(8B,C8,C8,43), V(6E,37,37,59), V(DA,6D,6D,B7), \
  110. V(01,8D,8D,8C), V(B1,D5,D5,64), V(9C,4E,4E,D2), V(49,A9,A9,E0), \
  111. V(D8,6C,6C,B4), V(AC,56,56,FA), V(F3,F4,F4,07), V(CF,EA,EA,25), \
  112. V(CA,65,65,AF), V(F4,7A,7A,8E), V(47,AE,AE,E9), V(10,08,08,18), \
  113. V(6F,BA,BA,D5), V(F0,78,78,88), V(4A,25,25,6F), V(5C,2E,2E,72), \
  114. V(38,1C,1C,24), V(57,A6,A6,F1), V(73,B4,B4,C7), V(97,C6,C6,51), \
  115. V(CB,E8,E8,23), V(A1,DD,DD,7C), V(E8,74,74,9C), V(3E,1F,1F,21), \
  116. V(96,4B,4B,DD), V(61,BD,BD,DC), V(0D,8B,8B,86), V(0F,8A,8A,85), \
  117. V(E0,70,70,90), V(7C,3E,3E,42), V(71,B5,B5,C4), V(CC,66,66,AA), \
  118. V(90,48,48,D8), V(06,03,03,05), V(F7,F6,F6,01), V(1C,0E,0E,12), \
  119. V(C2,61,61,A3), V(6A,35,35,5F), V(AE,57,57,F9), V(69,B9,B9,D0), \
  120. V(17,86,86,91), V(99,C1,C1,58), V(3A,1D,1D,27), V(27,9E,9E,B9), \
  121. V(D9,E1,E1,38), V(EB,F8,F8,13), V(2B,98,98,B3), V(22,11,11,33), \
  122. V(D2,69,69,BB), V(A9,D9,D9,70), V(07,8E,8E,89), V(33,94,94,A7), \
  123. V(2D,9B,9B,B6), V(3C,1E,1E,22), V(15,87,87,92), V(C9,E9,E9,20), \
  124. V(87,CE,CE,49), V(AA,55,55,FF), V(50,28,28,78), V(A5,DF,DF,7A), \
  125. V(03,8C,8C,8F), V(59,A1,A1,F8), V(09,89,89,80), V(1A,0D,0D,17), \
  126. V(65,BF,BF,DA), V(D7,E6,E6,31), V(84,42,42,C6), V(D0,68,68,B8), \
  127. V(82,41,41,C3), V(29,99,99,B0), V(5A,2D,2D,77), V(1E,0F,0F,11), \
  128. V(7B,B0,B0,CB), V(A8,54,54,FC), V(6D,BB,BB,D6), V(2C,16,16,3A)
  129. #define V(a,b,c,d) 0x##a##b##c##d
  130. static const uint32_t FT0[256] = { FT };
  131. #undef V
  132. #define V(a,b,c,d) 0x##d##a##b##c
  133. static const uint32_t FT1[256] = { FT };
  134. #undef V
  135. #define V(a,b,c,d) 0x##c##d##a##b
  136. static const uint32_t FT2[256] = { FT };
  137. #undef V
  138. #define V(a,b,c,d) 0x##b##c##d##a
  139. static const uint32_t FT3[256] = { FT };
  140. #undef V
  141. #undef FT
  142. /* reverse S-box */
  143. static const uint32_t RSb[256] =
  144. {
  145. 0x52, 0x09, 0x6A, 0xD5, 0x30, 0x36, 0xA5, 0x38,
  146. 0xBF, 0x40, 0xA3, 0x9E, 0x81, 0xF3, 0xD7, 0xFB,
  147. 0x7C, 0xE3, 0x39, 0x82, 0x9B, 0x2F, 0xFF, 0x87,
  148. 0x34, 0x8E, 0x43, 0x44, 0xC4, 0xDE, 0xE9, 0xCB,
  149. 0x54, 0x7B, 0x94, 0x32, 0xA6, 0xC2, 0x23, 0x3D,
  150. 0xEE, 0x4C, 0x95, 0x0B, 0x42, 0xFA, 0xC3, 0x4E,
  151. 0x08, 0x2E, 0xA1, 0x66, 0x28, 0xD9, 0x24, 0xB2,
  152. 0x76, 0x5B, 0xA2, 0x49, 0x6D, 0x8B, 0xD1, 0x25,
  153. 0x72, 0xF8, 0xF6, 0x64, 0x86, 0x68, 0x98, 0x16,
  154. 0xD4, 0xA4, 0x5C, 0xCC, 0x5D, 0x65, 0xB6, 0x92,
  155. 0x6C, 0x70, 0x48, 0x50, 0xFD, 0xED, 0xB9, 0xDA,
  156. 0x5E, 0x15, 0x46, 0x57, 0xA7, 0x8D, 0x9D, 0x84,
  157. 0x90, 0xD8, 0xAB, 0x00, 0x8C, 0xBC, 0xD3, 0x0A,
  158. 0xF7, 0xE4, 0x58, 0x05, 0xB8, 0xB3, 0x45, 0x06,
  159. 0xD0, 0x2C, 0x1E, 0x8F, 0xCA, 0x3F, 0x0F, 0x02,
  160. 0xC1, 0xAF, 0xBD, 0x03, 0x01, 0x13, 0x8A, 0x6B,
  161. 0x3A, 0x91, 0x11, 0x41, 0x4F, 0x67, 0xDC, 0xEA,
  162. 0x97, 0xF2, 0xCF, 0xCE, 0xF0, 0xB4, 0xE6, 0x73,
  163. 0x96, 0xAC, 0x74, 0x22, 0xE7, 0xAD, 0x35, 0x85,
  164. 0xE2, 0xF9, 0x37, 0xE8, 0x1C, 0x75, 0xDF, 0x6E,
  165. 0x47, 0xF1, 0x1A, 0x71, 0x1D, 0x29, 0xC5, 0x89,
  166. 0x6F, 0xB7, 0x62, 0x0E, 0xAA, 0x18, 0xBE, 0x1B,
  167. 0xFC, 0x56, 0x3E, 0x4B, 0xC6, 0xD2, 0x79, 0x20,
  168. 0x9A, 0xDB, 0xC0, 0xFE, 0x78, 0xCD, 0x5A, 0xF4,
  169. 0x1F, 0xDD, 0xA8, 0x33, 0x88, 0x07, 0xC7, 0x31,
  170. 0xB1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xEC, 0x5F,
  171. 0x60, 0x51, 0x7F, 0xA9, 0x19, 0xB5, 0x4A, 0x0D,
  172. 0x2D, 0xE5, 0x7A, 0x9F, 0x93, 0xC9, 0x9C, 0xEF,
  173. 0xA0, 0xE0, 0x3B, 0x4D, 0xAE, 0x2A, 0xF5, 0xB0,
  174. 0xC8, 0xEB, 0xBB, 0x3C, 0x83, 0x53, 0x99, 0x61,
  175. 0x17, 0x2B, 0x04, 0x7E, 0xBA, 0x77, 0xD6, 0x26,
  176. 0xE1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0C, 0x7D
  177. };
  178. /* reverse tables */
  179. #define RT \
  180. \
  181. V(51,F4,A7,50), V(7E,41,65,53), V(1A,17,A4,C3), V(3A,27,5E,96), \
  182. V(3B,AB,6B,CB), V(1F,9D,45,F1), V(AC,FA,58,AB), V(4B,E3,03,93), \
  183. V(20,30,FA,55), V(AD,76,6D,F6), V(88,CC,76,91), V(F5,02,4C,25), \
  184. V(4F,E5,D7,FC), V(C5,2A,CB,D7), V(26,35,44,80), V(B5,62,A3,8F), \
  185. V(DE,B1,5A,49), V(25,BA,1B,67), V(45,EA,0E,98), V(5D,FE,C0,E1), \
  186. V(C3,2F,75,02), V(81,4C,F0,12), V(8D,46,97,A3), V(6B,D3,F9,C6), \
  187. V(03,8F,5F,E7), V(15,92,9C,95), V(BF,6D,7A,EB), V(95,52,59,DA), \
  188. V(D4,BE,83,2D), V(58,74,21,D3), V(49,E0,69,29), V(8E,C9,C8,44), \
  189. V(75,C2,89,6A), V(F4,8E,79,78), V(99,58,3E,6B), V(27,B9,71,DD), \
  190. V(BE,E1,4F,B6), V(F0,88,AD,17), V(C9,20,AC,66), V(7D,CE,3A,B4), \
  191. V(63,DF,4A,18), V(E5,1A,31,82), V(97,51,33,60), V(62,53,7F,45), \
  192. V(B1,64,77,E0), V(BB,6B,AE,84), V(FE,81,A0,1C), V(F9,08,2B,94), \
  193. V(70,48,68,58), V(8F,45,FD,19), V(94,DE,6C,87), V(52,7B,F8,B7), \
  194. V(AB,73,D3,23), V(72,4B,02,E2), V(E3,1F,8F,57), V(66,55,AB,2A), \
  195. V(B2,EB,28,07), V(2F,B5,C2,03), V(86,C5,7B,9A), V(D3,37,08,A5), \
  196. V(30,28,87,F2), V(23,BF,A5,B2), V(02,03,6A,BA), V(ED,16,82,5C), \
  197. V(8A,CF,1C,2B), V(A7,79,B4,92), V(F3,07,F2,F0), V(4E,69,E2,A1), \
  198. V(65,DA,F4,CD), V(06,05,BE,D5), V(D1,34,62,1F), V(C4,A6,FE,8A), \
  199. V(34,2E,53,9D), V(A2,F3,55,A0), V(05,8A,E1,32), V(A4,F6,EB,75), \
  200. V(0B,83,EC,39), V(40,60,EF,AA), V(5E,71,9F,06), V(BD,6E,10,51), \
  201. V(3E,21,8A,F9), V(96,DD,06,3D), V(DD,3E,05,AE), V(4D,E6,BD,46), \
  202. V(91,54,8D,B5), V(71,C4,5D,05), V(04,06,D4,6F), V(60,50,15,FF), \
  203. V(19,98,FB,24), V(D6,BD,E9,97), V(89,40,43,CC), V(67,D9,9E,77), \
  204. V(B0,E8,42,BD), V(07,89,8B,88), V(E7,19,5B,38), V(79,C8,EE,DB), \
  205. V(A1,7C,0A,47), V(7C,42,0F,E9), V(F8,84,1E,C9), V(00,00,00,00), \
  206. V(09,80,86,83), V(32,2B,ED,48), V(1E,11,70,AC), V(6C,5A,72,4E), \
  207. V(FD,0E,FF,FB), V(0F,85,38,56), V(3D,AE,D5,1E), V(36,2D,39,27), \
  208. V(0A,0F,D9,64), V(68,5C,A6,21), V(9B,5B,54,D1), V(24,36,2E,3A), \
  209. V(0C,0A,67,B1), V(93,57,E7,0F), V(B4,EE,96,D2), V(1B,9B,91,9E), \
  210. V(80,C0,C5,4F), V(61,DC,20,A2), V(5A,77,4B,69), V(1C,12,1A,16), \
  211. V(E2,93,BA,0A), V(C0,A0,2A,E5), V(3C,22,E0,43), V(12,1B,17,1D), \
  212. V(0E,09,0D,0B), V(F2,8B,C7,AD), V(2D,B6,A8,B9), V(14,1E,A9,C8), \
  213. V(57,F1,19,85), V(AF,75,07,4C), V(EE,99,DD,BB), V(A3,7F,60,FD), \
  214. V(F7,01,26,9F), V(5C,72,F5,BC), V(44,66,3B,C5), V(5B,FB,7E,34), \
  215. V(8B,43,29,76), V(CB,23,C6,DC), V(B6,ED,FC,68), V(B8,E4,F1,63), \
  216. V(D7,31,DC,CA), V(42,63,85,10), V(13,97,22,40), V(84,C6,11,20), \
  217. V(85,4A,24,7D), V(D2,BB,3D,F8), V(AE,F9,32,11), V(C7,29,A1,6D), \
  218. V(1D,9E,2F,4B), V(DC,B2,30,F3), V(0D,86,52,EC), V(77,C1,E3,D0), \
  219. V(2B,B3,16,6C), V(A9,70,B9,99), V(11,94,48,FA), V(47,E9,64,22), \
  220. V(A8,FC,8C,C4), V(A0,F0,3F,1A), V(56,7D,2C,D8), V(22,33,90,EF), \
  221. V(87,49,4E,C7), V(D9,38,D1,C1), V(8C,CA,A2,FE), V(98,D4,0B,36), \
  222. V(A6,F5,81,CF), V(A5,7A,DE,28), V(DA,B7,8E,26), V(3F,AD,BF,A4), \
  223. V(2C,3A,9D,E4), V(50,78,92,0D), V(6A,5F,CC,9B), V(54,7E,46,62), \
  224. V(F6,8D,13,C2), V(90,D8,B8,E8), V(2E,39,F7,5E), V(82,C3,AF,F5), \
  225. V(9F,5D,80,BE), V(69,D0,93,7C), V(6F,D5,2D,A9), V(CF,25,12,B3), \
  226. V(C8,AC,99,3B), V(10,18,7D,A7), V(E8,9C,63,6E), V(DB,3B,BB,7B), \
  227. V(CD,26,78,09), V(6E,59,18,F4), V(EC,9A,B7,01), V(83,4F,9A,A8), \
  228. V(E6,95,6E,65), V(AA,FF,E6,7E), V(21,BC,CF,08), V(EF,15,E8,E6), \
  229. V(BA,E7,9B,D9), V(4A,6F,36,CE), V(EA,9F,09,D4), V(29,B0,7C,D6), \
  230. V(31,A4,B2,AF), V(2A,3F,23,31), V(C6,A5,94,30), V(35,A2,66,C0), \
  231. V(74,4E,BC,37), V(FC,82,CA,A6), V(E0,90,D0,B0), V(33,A7,D8,15), \
  232. V(F1,04,98,4A), V(41,EC,DA,F7), V(7F,CD,50,0E), V(17,91,F6,2F), \
  233. V(76,4D,D6,8D), V(43,EF,B0,4D), V(CC,AA,4D,54), V(E4,96,04,DF), \
  234. V(9E,D1,B5,E3), V(4C,6A,88,1B), V(C1,2C,1F,B8), V(46,65,51,7F), \
  235. V(9D,5E,EA,04), V(01,8C,35,5D), V(FA,87,74,73), V(FB,0B,41,2E), \
  236. V(B3,67,1D,5A), V(92,DB,D2,52), V(E9,10,56,33), V(6D,D6,47,13), \
  237. V(9A,D7,61,8C), V(37,A1,0C,7A), V(59,F8,14,8E), V(EB,13,3C,89), \
  238. V(CE,A9,27,EE), V(B7,61,C9,35), V(E1,1C,E5,ED), V(7A,47,B1,3C), \
  239. V(9C,D2,DF,59), V(55,F2,73,3F), V(18,14,CE,79), V(73,C7,37,BF), \
  240. V(53,F7,CD,EA), V(5F,FD,AA,5B), V(DF,3D,6F,14), V(78,44,DB,86), \
  241. V(CA,AF,F3,81), V(B9,68,C4,3E), V(38,24,34,2C), V(C2,A3,40,5F), \
  242. V(16,1D,C3,72), V(BC,E2,25,0C), V(28,3C,49,8B), V(FF,0D,95,41), \
  243. V(39,A8,01,71), V(08,0C,B3,DE), V(D8,B4,E4,9C), V(64,56,C1,90), \
  244. V(7B,CB,84,61), V(D5,32,B6,70), V(48,6C,5C,74), V(D0,B8,57,42)
  245. #define V(a,b,c,d) 0x##a##b##c##d
  246. static const uint32_t RT0[256] = { RT };
  247. #undef V
  248. #define V(a,b,c,d) 0x##d##a##b##c
  249. static const uint32_t RT1[256] = { RT };
  250. #undef V
  251. #define V(a,b,c,d) 0x##c##d##a##b
  252. static const uint32_t RT2[256] = { RT };
  253. #undef V
  254. #define V(a,b,c,d) 0x##b##c##d##a
  255. static const uint32_t RT3[256] = { RT };
  256. #undef V
  257. #undef RT
  258. /* round constants */
  259. static const uint32_t RCON[10] =
  260. {
  261. 0x01000000, 0x02000000, 0x04000000, 0x08000000,
  262. 0x10000000, 0x20000000, 0x40000000, 0x80000000,
  263. 0x1B000000, 0x36000000
  264. };
  265. /* platform-independant 32-bit integer manipulation macros */
  266. #define GET_UINT32(n,b,i) \
  267. { \
  268. (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
  269. | ( (uint32_t) (b)[(i) + 1] << 16 ) \
  270. | ( (uint32_t) (b)[(i) + 2] << 8 ) \
  271. | ( (uint32_t) (b)[(i) + 3] ); \
  272. }
  273. #define PUT_UINT32(n,b,i) \
  274. { \
  275. (b)[(i) ] = (uchar) ( (n) >> 24 ); \
  276. (b)[(i) + 1] = (uchar) ( (n) >> 16 ); \
  277. (b)[(i) + 2] = (uchar) ( (n) >> 8 ); \
  278. (b)[(i) + 3] = (uchar) ( (n) ); \
  279. }
  280. /* decryption key schedule tables */
  281. int KT_init = 1;
  282. uint32_t KT0[256];
  283. uint32_t KT1[256];
  284. uint32_t KT2[256];
  285. uint32_t KT3[256];
  286. /* AES key scheduling routine */
  287. int aes_set_key( aes_context *ctx, uchar *key, int nbits )
  288. {
  289. int i;
  290. uint32_t *RK, *SK;
  291. switch( nbits )
  292. {
  293. case 128: ctx->nr = 10; break;
  294. case 192: ctx->nr = 12; break;
  295. case 256: ctx->nr = 14; break;
  296. default : return( 1 );
  297. }
  298. RK = ctx->erk;
  299. for( i = 0; i < (nbits >> 5); i++ )
  300. {
  301. GET_UINT32( RK[i], key, i * 4 );
  302. }
  303. /* setup encryption round keys */
  304. switch( nbits )
  305. {
  306. case 128:
  307. for( i = 0; i < 10; i++, RK += 4 )
  308. {
  309. RK[4] = RK[0] ^ RCON[i] ^
  310. ( FSb[ (uchar) ( RK[3] >> 16 ) ] << 24 ) ^
  311. ( FSb[ (uchar) ( RK[3] >> 8 ) ] << 16 ) ^
  312. ( FSb[ (uchar) ( RK[3] ) ] << 8 ) ^
  313. ( FSb[ (uchar) ( RK[3] >> 24 ) ] );
  314. RK[5] = RK[1] ^ RK[4];
  315. RK[6] = RK[2] ^ RK[5];
  316. RK[7] = RK[3] ^ RK[6];
  317. }
  318. break;
  319. case 192:
  320. for( i = 0; i < 8; i++, RK += 6 )
  321. {
  322. RK[6] = RK[0] ^ RCON[i] ^
  323. ( FSb[ (uchar) ( RK[5] >> 16 ) ] << 24 ) ^
  324. ( FSb[ (uchar) ( RK[5] >> 8 ) ] << 16 ) ^
  325. ( FSb[ (uchar) ( RK[5] ) ] << 8 ) ^
  326. ( FSb[ (uchar) ( RK[5] >> 24 ) ] );
  327. RK[7] = RK[1] ^ RK[6];
  328. RK[8] = RK[2] ^ RK[7];
  329. RK[9] = RK[3] ^ RK[8];
  330. RK[10] = RK[4] ^ RK[9];
  331. RK[11] = RK[5] ^ RK[10];
  332. }
  333. break;
  334. case 256:
  335. for( i = 0; i < 7; i++, RK += 8 )
  336. {
  337. RK[8] = RK[0] ^ RCON[i] ^
  338. ( FSb[ (uchar) ( RK[7] >> 16 ) ] << 24 ) ^
  339. ( FSb[ (uchar) ( RK[7] >> 8 ) ] << 16 ) ^
  340. ( FSb[ (uchar) ( RK[7] ) ] << 8 ) ^
  341. ( FSb[ (uchar) ( RK[7] >> 24 ) ] );
  342. RK[9] = RK[1] ^ RK[8];
  343. RK[10] = RK[2] ^ RK[9];
  344. RK[11] = RK[3] ^ RK[10];
  345. RK[12] = RK[4] ^
  346. ( FSb[ (uchar) ( RK[11] >> 24 ) ] << 24 ) ^
  347. ( FSb[ (uchar) ( RK[11] >> 16 ) ] << 16 ) ^
  348. ( FSb[ (uchar) ( RK[11] >> 8 ) ] << 8 ) ^
  349. ( FSb[ (uchar) ( RK[11] ) ] );
  350. RK[13] = RK[5] ^ RK[12];
  351. RK[14] = RK[6] ^ RK[13];
  352. RK[15] = RK[7] ^ RK[14];
  353. }
  354. break;
  355. }
  356. /* setup decryption round keys */
  357. if( KT_init )
  358. {
  359. for( i = 0; i < 256; i++ )
  360. {
  361. KT0[i] = RT0[ FSb[i] ];
  362. KT1[i] = RT1[ FSb[i] ];
  363. KT2[i] = RT2[ FSb[i] ];
  364. KT3[i] = RT3[ FSb[i] ];
  365. }
  366. KT_init = 0;
  367. }
  368. SK = ctx->drk;
  369. *SK++ = *RK++;
  370. *SK++ = *RK++;
  371. *SK++ = *RK++;
  372. *SK++ = *RK++;
  373. for( i = 1; i < ctx->nr; i++ )
  374. {
  375. RK -= 8;
  376. *SK++ = KT0[ (uchar) ( *RK >> 24 ) ] ^
  377. KT1[ (uchar) ( *RK >> 16 ) ] ^
  378. KT2[ (uchar) ( *RK >> 8 ) ] ^
  379. KT3[ (uchar) ( *RK ) ]; RK++;
  380. *SK++ = KT0[ (uchar) ( *RK >> 24 ) ] ^
  381. KT1[ (uchar) ( *RK >> 16 ) ] ^
  382. KT2[ (uchar) ( *RK >> 8 ) ] ^
  383. KT3[ (uchar) ( *RK ) ]; RK++;
  384. *SK++ = KT0[ (uchar) ( *RK >> 24 ) ] ^
  385. KT1[ (uchar) ( *RK >> 16 ) ] ^
  386. KT2[ (uchar) ( *RK >> 8 ) ] ^
  387. KT3[ (uchar) ( *RK ) ]; RK++;
  388. *SK++ = KT0[ (uchar) ( *RK >> 24 ) ] ^
  389. KT1[ (uchar) ( *RK >> 16 ) ] ^
  390. KT2[ (uchar) ( *RK >> 8 ) ] ^
  391. KT3[ (uchar) ( *RK ) ]; RK++;
  392. }
  393. RK -= 8;
  394. *SK++ = *RK++;
  395. *SK++ = *RK++;
  396. *SK++ = *RK++;
  397. *SK++ = *RK++;
  398. return( 0 );
  399. }
  400. /* AES 128-bit block encryption routine */
  401. void aes_encrypt( aes_context *ctx, uchar input[16], uchar output[16] )
  402. {
  403. uint32_t *RK, X0, X1, X2, X3, Y0, Y1, Y2, Y3;
  404. RK = ctx->erk;
  405. GET_UINT32( X0, input, 0 ); X0 ^= RK[0];
  406. GET_UINT32( X1, input, 4 ); X1 ^= RK[1];
  407. GET_UINT32( X2, input, 8 ); X2 ^= RK[2];
  408. GET_UINT32( X3, input, 12 ); X3 ^= RK[3];
  409. #define AES_FROUND(X0,X1,X2,X3,Y0,Y1,Y2,Y3) \
  410. { \
  411. RK += 4; \
  412. \
  413. X0 = RK[0] ^ FT0[ (uchar) ( Y0 >> 24 ) ] ^ \
  414. FT1[ (uchar) ( Y1 >> 16 ) ] ^ \
  415. FT2[ (uchar) ( Y2 >> 8 ) ] ^ \
  416. FT3[ (uchar) ( Y3 ) ]; \
  417. \
  418. X1 = RK[1] ^ FT0[ (uchar) ( Y1 >> 24 ) ] ^ \
  419. FT1[ (uchar) ( Y2 >> 16 ) ] ^ \
  420. FT2[ (uchar) ( Y3 >> 8 ) ] ^ \
  421. FT3[ (uchar) ( Y0 ) ]; \
  422. \
  423. X2 = RK[2] ^ FT0[ (uchar) ( Y2 >> 24 ) ] ^ \
  424. FT1[ (uchar) ( Y3 >> 16 ) ] ^ \
  425. FT2[ (uchar) ( Y0 >> 8 ) ] ^ \
  426. FT3[ (uchar) ( Y1 ) ]; \
  427. \
  428. X3 = RK[3] ^ FT0[ (uchar) ( Y3 >> 24 ) ] ^ \
  429. FT1[ (uchar) ( Y0 >> 16 ) ] ^ \
  430. FT2[ (uchar) ( Y1 >> 8 ) ] ^ \
  431. FT3[ (uchar) ( Y2 ) ]; \
  432. }
  433. AES_FROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 ); /* round 1 */
  434. AES_FROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 ); /* round 2 */
  435. AES_FROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 ); /* round 3 */
  436. AES_FROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 ); /* round 4 */
  437. AES_FROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 ); /* round 5 */
  438. AES_FROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 ); /* round 6 */
  439. AES_FROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 ); /* round 7 */
  440. AES_FROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 ); /* round 8 */
  441. AES_FROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 ); /* round 9 */
  442. if( ctx->nr > 10 )
  443. {
  444. AES_FROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 ); /* round 10 */
  445. AES_FROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 ); /* round 11 */
  446. }
  447. if( ctx->nr > 12 )
  448. {
  449. AES_FROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 ); /* round 12 */
  450. AES_FROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 ); /* round 13 */
  451. }
  452. /* last round */
  453. RK += 4;
  454. X0 = RK[0] ^ ( FSb[ (uchar) ( Y0 >> 24 ) ] << 24 ) ^
  455. ( FSb[ (uchar) ( Y1 >> 16 ) ] << 16 ) ^
  456. ( FSb[ (uchar) ( Y2 >> 8 ) ] << 8 ) ^
  457. ( FSb[ (uchar) ( Y3 ) ] );
  458. X1 = RK[1] ^ ( FSb[ (uchar) ( Y1 >> 24 ) ] << 24 ) ^
  459. ( FSb[ (uchar) ( Y2 >> 16 ) ] << 16 ) ^
  460. ( FSb[ (uchar) ( Y3 >> 8 ) ] << 8 ) ^
  461. ( FSb[ (uchar) ( Y0 ) ] );
  462. X2 = RK[2] ^ ( FSb[ (uchar) ( Y2 >> 24 ) ] << 24 ) ^
  463. ( FSb[ (uchar) ( Y3 >> 16 ) ] << 16 ) ^
  464. ( FSb[ (uchar) ( Y0 >> 8 ) ] << 8 ) ^
  465. ( FSb[ (uchar) ( Y1 ) ] );
  466. X3 = RK[3] ^ ( FSb[ (uchar) ( Y3 >> 24 ) ] << 24 ) ^
  467. ( FSb[ (uchar) ( Y0 >> 16 ) ] << 16 ) ^
  468. ( FSb[ (uchar) ( Y1 >> 8 ) ] << 8 ) ^
  469. ( FSb[ (uchar) ( Y2 ) ] );
  470. PUT_UINT32( X0, output, 0 );
  471. PUT_UINT32( X1, output, 4 );
  472. PUT_UINT32( X2, output, 8 );
  473. PUT_UINT32( X3, output, 12 );
  474. }
  475. /* AES 128-bit block decryption routine */
  476. void aes_decrypt( aes_context *ctx, uchar input[16], uchar output[16] )
  477. {
  478. uint32_t *RK, X0, X1, X2, X3, Y0, Y1, Y2, Y3;
  479. RK = ctx->drk;
  480. GET_UINT32( X0, input, 0 ); X0 ^= RK[0];
  481. GET_UINT32( X1, input, 4 ); X1 ^= RK[1];
  482. GET_UINT32( X2, input, 8 ); X2 ^= RK[2];
  483. GET_UINT32( X3, input, 12 ); X3 ^= RK[3];
  484. #define AES_RROUND(X0,X1,X2,X3,Y0,Y1,Y2,Y3) \
  485. { \
  486. RK += 4; \
  487. \
  488. X0 = RK[0] ^ RT0[ (uchar) ( Y0 >> 24 ) ] ^ \
  489. RT1[ (uchar) ( Y3 >> 16 ) ] ^ \
  490. RT2[ (uchar) ( Y2 >> 8 ) ] ^ \
  491. RT3[ (uchar) ( Y1 ) ]; \
  492. \
  493. X1 = RK[1] ^ RT0[ (uchar) ( Y1 >> 24 ) ] ^ \
  494. RT1[ (uchar) ( Y0 >> 16 ) ] ^ \
  495. RT2[ (uchar) ( Y3 >> 8 ) ] ^ \
  496. RT3[ (uchar) ( Y2 ) ]; \
  497. \
  498. X2 = RK[2] ^ RT0[ (uchar) ( Y2 >> 24 ) ] ^ \
  499. RT1[ (uchar) ( Y1 >> 16 ) ] ^ \
  500. RT2[ (uchar) ( Y0 >> 8 ) ] ^ \
  501. RT3[ (uchar) ( Y3 ) ]; \
  502. \
  503. X3 = RK[3] ^ RT0[ (uchar) ( Y3 >> 24 ) ] ^ \
  504. RT1[ (uchar) ( Y2 >> 16 ) ] ^ \
  505. RT2[ (uchar) ( Y1 >> 8 ) ] ^ \
  506. RT3[ (uchar) ( Y0 ) ]; \
  507. }
  508. AES_RROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 ); /* round 1 */
  509. AES_RROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 ); /* round 2 */
  510. AES_RROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 ); /* round 3 */
  511. AES_RROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 ); /* round 4 */
  512. AES_RROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 ); /* round 5 */
  513. AES_RROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 ); /* round 6 */
  514. AES_RROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 ); /* round 7 */
  515. AES_RROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 ); /* round 8 */
  516. AES_RROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 ); /* round 9 */
  517. if( ctx->nr > 10 )
  518. {
  519. AES_RROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 ); /* round 10 */
  520. AES_RROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 ); /* round 11 */
  521. }
  522. if( ctx->nr > 12 )
  523. {
  524. AES_RROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 ); /* round 12 */
  525. AES_RROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 ); /* round 13 */
  526. }
  527. /* last round */
  528. RK += 4;
  529. X0 = RK[0] ^ ( RSb[ (uchar) ( Y0 >> 24 ) ] << 24 ) ^
  530. ( RSb[ (uchar) ( Y3 >> 16 ) ] << 16 ) ^
  531. ( RSb[ (uchar) ( Y2 >> 8 ) ] << 8 ) ^
  532. ( RSb[ (uchar) ( Y1 ) ] );
  533. X1 = RK[1] ^ ( RSb[ (uchar) ( Y1 >> 24 ) ] << 24 ) ^
  534. ( RSb[ (uchar) ( Y0 >> 16 ) ] << 16 ) ^
  535. ( RSb[ (uchar) ( Y3 >> 8 ) ] << 8 ) ^
  536. ( RSb[ (uchar) ( Y2 ) ] );
  537. X2 = RK[2] ^ ( RSb[ (uchar) ( Y2 >> 24 ) ] << 24 ) ^
  538. ( RSb[ (uchar) ( Y1 >> 16 ) ] << 16 ) ^
  539. ( RSb[ (uchar) ( Y0 >> 8 ) ] << 8 ) ^
  540. ( RSb[ (uchar) ( Y3 ) ] );
  541. X3 = RK[3] ^ ( RSb[ (uchar) ( Y3 >> 24 ) ] << 24 ) ^
  542. ( RSb[ (uchar) ( Y2 >> 16 ) ] << 16 ) ^
  543. ( RSb[ (uchar) ( Y1 >> 8 ) ] << 8 ) ^
  544. ( RSb[ (uchar) ( Y0 ) ] );
  545. PUT_UINT32( X0, output, 0 );
  546. PUT_UINT32( X1, output, 4 );
  547. PUT_UINT32( X2, output, 8 );
  548. PUT_UINT32( X3, output, 12 );
  549. }