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[原创]看雪CTF.TSRC 2018 团队赛 第八题 二向箔分析
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发表于: 2018-12-17 12:33 2943
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卡在最后一步,时间来不及了。。。。
整个程序要求输入72个字符分成: 32 + 32 + 8 = 72
头32个字节由check1(401AC0)校验,返回1 才进入后部分校验 后40个字符进入到check2401710校验返回1,则注册码成功。
一 check1
401AC0)
前32个sn 为“76474B2B1926009C452B0062720019” 则返回成功。
实际上就是解方程。下面是将其还原算法代码(C++)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 | unsigned char g_sn[0x48] = { 0x76, 0x47, 0x4b, 0x2b, 0x19, 0x26, 0x00, 0x9c, 0x45, 0x2b, 0x00, 0x62, 0x72, 0x00, 0x19, 0x02, //0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, //0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF, 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF, 0x11, 0x22, 0x33, 0x44 }; /***************************************************************** 用途:输出sn进行字节交换 ******************************************************************/ void SnSwap(unsigned char *sn, unsigned char *newSn) { for ( int i = 0; i < 16; i++) { int index = (7 * (i / 4) + 2 * (i % 4)) % 4; int location = (i / 4 + i % 4 + 2 * (i / 4)) % 4; newSn[4 * index + location] = sn[i]; } } unsigned char g_const2[256] = { 0x10, 0x57, 0x02, 0x39, 0xac, 0xa8, 0x37, 0x40, 0x72, 0xac, 0xb9, 0x94, 0xf9, 0x30, 0x42, 0x40, 0x14, 0xfd, 0xeb, 0xbc, 0x29, 0x01, 0x68, 0xc0, 0x9e, 0x40, 0x1b, 0x51, 0xbd, 0xa2, 0x3b, 0x40, 0x0a, 0x64, 0x78, 0x4f, 0xbc, 0x94, 0x33, 0x40, 0x7a, 0xaf, 0x12, 0x4b, 0x96, 0xa6, 0x41, 0x40, 0x24, 0x7f, 0x12, 0x1f, 0xf1, 0xb5, 0x62, 0x40, 0x47, 0x34, 0x42, 0x79, 0x4e, 0xef, 0x55, 0x40, 0xe4, 0x68, 0x23, 0x75, 0x16, 0x09, 0x57, 0xc0, 0xa0, 0x0e, 0x7e, 0x03, 0x1b, 0x5a, 0x03, 0xc0, 0xe1, 0x58, 0x3b, 0x08, 0xbb, 0x5f, 0x66, 0x40, 0x43, 0xa9, 0xe4, 0xc7, 0x1a, 0x68, 0x45, 0x40, 0x4e, 0x05, 0x8f, 0x75, 0x0d, 0xe8, 0x4f, 0x40, 0x84, 0xb8, 0x8d, 0xfb, 0xa7, 0x09, 0x2d, 0xc0, 0x88, 0x62, 0xc9, 0xba, 0xc4, 0x2d, 0x6c, 0x40, 0x57, 0xfc, 0x71, 0x2c, 0x8a, 0x9e, 0x3c, 0x40, 0xc0, 0x48, 0xde, 0x90, 0xc3, 0xc5, 0x63, 0x40, 0x2e, 0x6f, 0xea, 0xff, 0x7a, 0x47, 0x49, 0x40, 0x00, 0x9a, 0x80, 0x4f, 0xf2, 0xbf, 0xe6, 0x3f, 0xa3, 0x3e, 0x95, 0x71, 0x33, 0x71, 0x4b, 0x40, 0x5c, 0xbe, 0x88, 0x7a, 0xf9, 0xc6, 0x56, 0x40, 0xed, 0x5f, 0x6b, 0x3d, 0xf4, 0xf1, 0x59, 0x40, 0xe8, 0xa1, 0xf8, 0x94, 0xd8, 0xe6, 0x43, 0x40, 0x4c, 0x3c, 0xb5, 0xa8, 0xa4, 0x56, 0x3b, 0x40, 0x53, 0xf5, 0x6e, 0x7f, 0x83, 0x51, 0x70, 0x40, 0xcd, 0xfb, 0x5f, 0xed, 0x0e, 0x09, 0x57, 0x40, 0xca, 0x13, 0xbb, 0x54, 0x2a, 0x42, 0x58, 0x40, 0xfe, 0x3a, 0x53, 0x73, 0xd1, 0x60, 0x39, 0x40, 0xf0, 0x2d, 0xb0, 0x58, 0x6f, 0x46, 0x6a, 0x40, 0xdc, 0xc8, 0x2f, 0x33, 0x3b, 0x90, 0x3f, 0x40, 0x1b, 0xf8, 0x44, 0x94, 0xdc, 0x50, 0x50, 0x40, 0x79, 0x6e, 0x1c, 0x4c, 0xa6, 0xb3, 0x39, 0x40, }; unsigned char g_const[256] = { 0xEE, 0xB9, 0x17, 0x1C, 0x0B, 0x53, 0x56, 0x40, 0xB0, 0x8F, 0x20, 0x7B, 0x1F, 0xCB, 0x53, 0xC0, 0x3E, 0xDE, 0xDA, 0xB2, 0xD8, 0xCD, 0x5B, 0xC0, 0xC2, 0xE0, 0x4F, 0x80, 0x24, 0xB8, 0x01, 0x40, 0x28, 0xD9, 0xAE, 0x09, 0x1D, 0x45, 0x4D, 0x40, 0xBC, 0xBF, 0xB0, 0xBA, 0xA4, 0x10, 0x3D, 0x40, 0x59, 0x3D, 0x04, 0xF9, 0x44, 0x0D, 0x49, 0x40, 0x79, 0xF8, 0x57, 0x7F, 0x3F, 0xE8, 0x45, 0x40, 0x2A, 0x3E, 0xB7, 0x6F, 0x3D, 0x49, 0x43, 0xC0, 0x90, 0x47, 0xA1, 0x02, 0x41, 0x03, 0x18, 0xC0, 0xFE, 0x3C, 0xD8, 0x6E, 0x3F, 0xD2, 0x57, 0x40, 0x74, 0xE5, 0x05, 0xB8, 0x4F, 0xEE, 0x37, 0x40, 0x93, 0x55, 0xC6, 0x7F, 0xA9, 0x8D, 0x5F, 0x40, 0xCC, 0x05, 0x2B, 0xFE, 0xD1, 0x91, 0x4B, 0xC0, 0x48, 0xD3, 0x63, 0xE2, 0xEE, 0x42, 0x44, 0x40, 0x40, 0x09, 0xC7, 0x44, 0xAB, 0x39, 0x35, 0x40, 0x50, 0xB7, 0xF3, 0x1A, 0xDC, 0xAB, 0x0F, 0x40, 0x54, 0xCC, 0x0B, 0x4B, 0x2B, 0xA0, 0x2B, 0x40, 0x30, 0x9F, 0xBB, 0xE1, 0xD4, 0x2C, 0x50, 0x40, 0x18, 0xCF, 0x21, 0x80, 0x1F, 0x70, 0x26, 0xC0, 0x0A, 0x5D, 0x83, 0xEA, 0x86, 0x55, 0x51, 0x40, 0x94, 0xB7, 0xE2, 0x65, 0xF3, 0xE2, 0x42, 0x40, 0xB1, 0x21, 0x5C, 0x03, 0x15, 0xE7, 0x48, 0x40, 0xC0, 0x01, 0xF6, 0xC3, 0x5A, 0xAE, 0xF0, 0x3F, 0x34, 0xEE, 0x29, 0xD0, 0x23, 0x42, 0x1F, 0x40, 0x84, 0x01, 0x69, 0x25, 0xDD, 0x93, 0x3D, 0x40, 0x58, 0xE4, 0xB8, 0x8B, 0x3C, 0x46, 0x20, 0x40, 0x38, 0xF8, 0x7B, 0x85, 0x84, 0x07, 0x27, 0x40, 0x70, 0x16, 0x1F, 0x32, 0x58, 0x23, 0x18, 0xC0, 0xB8, 0xD5, 0x58, 0x08, 0xC3, 0x2F, 0x20, 0xC0, 0x54, 0x6B, 0x43, 0x4A, 0xF2, 0x89, 0x39, 0x40, 0xD8, 0x9E, 0x2F, 0xD1, 0x0F, 0xA4, 0xFA, 0x3F, }; typedef struct doubleInfo { double d1; double d2; }doubleInfo; vector<doubleInfo> g_snDoube; vector<doubleInfo> g_newVector; doubleInfo g_key[16]; /***************************************************************** 用途:创建sn浮点向量 ******************************************************************/ void sn2DoubleVector(unsigned char * sn) { doubleInfo d; d.d2 = 0; for ( int i = 0; i < 16; i++) { d.d1 = ( double )sn[i]; g_snDoube.push_back(d); } } /***************************************************************** 用途:将g_snDoube进行二元一次方程变换 ******************************************************************/ void SnF1( int index) { int i; double d11, d12; double c11, c12; doubleInfo strDoubleInfo; double DoubleConst[32][2]; DoubleConst[16][0] = 0.8872448700399544; DoubleConst[16][1] = 0.4612987541580665; DoubleConst[17][0] = 1.0; DoubleConst[17][1] = -2.449293598294706e-16; DoubleConst[18][0] = 1.0; DoubleConst[18][1] = 0.0; DoubleConst[19][0] = 0.8661842563768242; DoubleConst[19][1] = 0.4997247582469054; DoubleConst[20][0] = 1.0; DoubleConst[20][1] = -2.449293598294706e-16; DoubleConst[21][0] = 0.8661842563768242; DoubleConst[21][1] = 0.4997247582469054; DoubleConst[22][0] = 0.9985971885883369; DoubleConst[22][1] = 0.052949550927931; DoubleConst[23][0] = 0.9953266793156615; DoubleConst[23][1] = -0.09656501148168593; DoubleConst[24][0] = 1.0; DoubleConst[24][1] = 0.0; DoubleConst[25][0] = 0.9985971885883369; DoubleConst[25][1] = 0.052949550927931; DoubleConst[26][0] = 0.9945026452220342; DoubleConst[26][1] = 0.1047114542272076; DoubleConst[27][0] = 0.9878936003329053; DoubleConst[27][1] = 0.1551329572376227; DoubleConst[28][0] = 0.8661842563768242; DoubleConst[28][1] = 0.4997247582469054; DoubleConst[29][0] = 0.9953266793156615; DoubleConst[29][1] = -0.09656501148168593; DoubleConst[30][0] = 0.9878936003329053; DoubleConst[30][1] = 0.1551329572376227; DoubleConst[31][0] = 0.7738490104360864; DoubleConst[31][1] = 0.6333701201091585; DoubleConst[0][0] = 0.6276739465982339; DoubleConst[0][1] = -0.7784763430970766; DoubleConst[1][0] = -0.963553239351518; DoubleConst[1][1] = 0.2675166442208714; DoubleConst[2][0] = 1.0; DoubleConst[2][1] = -2.449293598294706e-16; DoubleConst[3][0] = 1.0; DoubleConst[3][1] = 0.0; DoubleConst[4][0] = -0.963553239351518; DoubleConst[8][1] = -2.449293598294706e-16; DoubleConst[4][1] = 0.2675166442208714; DoubleConst[5][0] = 1.0; DoubleConst[5][1] = 0.0; DoubleConst[6][0] = 0.7316273320795593; DoubleConst[6][1] = -0.6817048092496827; DoubleConst[7][0] = 0.9954095040352869; DoubleConst[7][1] = -0.09570746719156305; DoubleConst[8][0] = 1.0; DoubleConst[9][0] = 0.7316273320795593; DoubleConst[9][1] = -0.6817048092496827; DoubleConst[10][0] = 0.9393388792184448; DoubleConst[10][1] = 0.3429904809009076; DoubleConst[11][0] = 0.9993790498804485; DoubleConst[11][1] = 0.03523513388724686; DoubleConst[12][0] = 1.0; DoubleConst[12][1] = 0.0; DoubleConst[13][0] = 0.9954095040352869; DoubleConst[13][1] = -0.09570746719156305; DoubleConst[14][0] = 0.9993790498804485; DoubleConst[14][1] = 0.03523513388724686; DoubleConst[15][0] = 0.933838571018358; DoubleConst[15][1] = -0.357694734764703; for (i = 0; i < 16; i++) { strDoubleInfo = g_snDoube.at(i); d11 = strDoubleInfo.d1; d12 = strDoubleInfo.d2; c11 = DoubleConst[index+ i][0]; c12 = DoubleConst[index+ i][1]; strDoubleInfo.d1 = c11 * d11 - c12 * d12; strDoubleInfo.d2 = d11 * c12 + d12 * c11; g_snDoube[i] = strDoubleInfo; } } /***************************************************************** 用途:取0 4 8 12 或1 5 9 13 或 2 6 10 14 或3 7 11 15 ******************************************************************/ void Fecth4ByIndex( int index, int max) { if ( false == g_newVector.empty()) { g_newVector.erase(g_newVector.begin(), g_newVector.end()); } for ( int i = 0; i < max; i++) { g_newVector.push_back(g_snDoube[i * 4 + index]); } } /***************************************************************** 用途:取0 1 2 3 或4 5 6 7或8 9 10 11或12 13 14 15 ******************************************************************/ void Fecth1ByIndex( int index, int max) { if ( false == g_newVector.empty()) { g_newVector.erase(g_newVector.begin(), g_newVector.end()); } for ( int i = 0; i < max; i++) { g_newVector.push_back(g_snDoube[index * 4 + i]); } } /***************************************************************** 用途:设置0 4 8 12 或1 5 9 13 或 2 6 10 14 或3 7 11 15 ******************************************************************/ void Set4ByIndex( int index, int max) { for ( int i = 0; i < max; i++) { g_snDoube[i * 4 + index] = g_newVector[i]; } } /***************************************************************** 用途:设置0 1 2 3 或4 5 6 7或8 9 10 11或12 13 14 15 ******************************************************************/ void Set1ByIndex( int index, int max) { for ( int i = 0; i < max; i++) { g_snDoube[index * 4 + i] = g_newVector[i]; } } /***************************************************************** 用途:创建用于计算的常量向量 ******************************************************************/ void CreateConstVetor(vector<doubleInfo> *tempVector) { int cnt = 4; int deta = 0; double doubleValue; doubleInfo constInfo; double DoubleCnt = ( double )cnt; for ( int i = 0; i < 4; i++) { doubleValue = ( double )deta * 3.14159265354 / DoubleCnt; constInfo.d1 = cos (doubleValue); constInfo.d2 = sin (doubleValue); tempVector->push_back(constInfo); deta -= 2; } } /***************************************************************** 用途:进行二元一次方程第二次变换 ******************************************************************/ void SnF2ByIndex( int index1, int index2, int constIndex) { double d11, d12; double d21, d22; double c11, c12; //创建常量向量 vector<doubleInfo> DoubleConst; CreateConstVetor(&DoubleConst); d11 = g_newVector[index1].d1; d12 = g_newVector[index1].d2; d21 = g_newVector[index2].d1; d22 = g_newVector[index2].d2; c11 = DoubleConst[constIndex].d1; c12 = DoubleConst[constIndex].d2; g_newVector[index2].d1 = (d11 - d21)*c11 - (d12 - d22)*c12; g_newVector[index2].d2 = (d11 - d21)*c12 + (d12 - d22)*c11; g_newVector[index1].d1 = d11 + d21; g_newVector[index1].d2 = d12 + d22; } /***************************************************************** 用途:向量索引交换 ******************************************************************/ void SnSwap( int index1, int index2) { doubleInfo strDoubleInfo1; doubleInfo strDoubleInfo2; strDoubleInfo1 = g_newVector[index1]; strDoubleInfo2 = g_newVector[index2]; g_newVector[index1] = strDoubleInfo2; g_newVector[index2] = strDoubleInfo1; } /***************************************************************** 用途:二元一次方程第二次变换以及进行向量切换 ******************************************************************/ void SnF2AndSwap( void ) { SnF2ByIndex(0, 2, 0); SnF2ByIndex(1, 3, 1); SnF2ByIndex(0, 1, 0); SnF2ByIndex(2, 3, 0); SnSwap(1, 2); int xxxx = 1; } /***************************************************************** 用途:创建用于计算的常量向量 ******************************************************************/ void CreateConstVetor2(vector<doubleInfo> *tempVector) { int cnt = 4; int deta = 0; double doubleValue; doubleInfo constInfo; double DoubleCnt = ( double )cnt; for ( int i = 0; i < 4; i++) { doubleValue = ( double )deta * 3.14159265354 / DoubleCnt; constInfo.d1 = cos (doubleValue); constInfo.d2 = sin (doubleValue); tempVector->push_back(constInfo); deta += 2; } } /***************************************************************** 用途:进行二元一次方程第二次变换 ******************************************************************/ void SnF2ByIndex2( int index1, int index2, int constIndex) { double d11, d12; double d21, d22; double c11, c12; //创建常量向量 vector<doubleInfo> DoubleConst; CreateConstVetor2(&DoubleConst); d11 = g_newVector[index1].d1; d12 = g_newVector[index1].d2; d21 = g_newVector[index2].d1; d22 = g_newVector[index2].d2; c11 = DoubleConst[constIndex].d1; c12 = DoubleConst[constIndex].d2; g_newVector[index2].d1 = (d11 - d21)*c11 - (d12 - d22)*c12; g_newVector[index2].d2 = (d11 - d21)*c12 + (d12 - d22)*c11; g_newVector[index1].d1 = d11 + d21; g_newVector[index1].d2 = d12 + d22; } /***************************************************************** 用途:二元一次方程第二次变换以及进行向量切换 ******************************************************************/ void DivLoop( int loopCnt) { double doubleCnt = loopCnt; for ( int i = 0; i < loopCnt; i++) { g_newVector[i].d1 = g_newVector[i].d1 / doubleCnt; g_newVector[i].d2 = g_newVector[i].d2 / doubleCnt; } } /***************************************************************** 用途:二元一次方程第二次变换以及进行向量切换 ******************************************************************/ void SnF2AndSwap2( void ) { SnF2ByIndex2(0, 2, 0); SnF2ByIndex2(1, 3, 1); SnF2ByIndex2(0, 1, 0); SnF2ByIndex2(2, 3, 0); SnSwap(1, 2); DivLoop(4); int xxxx = 1; } bool encrypt( char * sn) { //第一步进行sn字节交换 unsigned char newSn[16]; SnSwap(g_sn, newSn); //第二步,将newSn转换到g_snDoube sn2DoubleVector(newSn); //第三步,进行二元一次方程变换 SnF1(0); //第四步,执行二元一次方程变换 for ( int i = 0; i < 4; i++) { Fecth4ByIndex(i, 4); SnF2AndSwap(); Set4ByIndex(i, 4); } //第五步,执行二元一次方程变换 for ( int i = 0; i < 4; i++) { Fecth1ByIndex(i, 4); SnF2AndSwap(); Set1ByIndex(i, 4); } //第六步 SnF1(16); //第七步,执行二元一次方程变换 for ( int i = 0; i < 4; i++) { Fecth1ByIndex(i, 4); SnF2AndSwap2(); Set1ByIndex(i, 4); } //第八步,执行二元一次方程变换 for ( int i = 0; i < 4; i++) { Fecth4ByIndex(i, 4); SnF2AndSwap2(); Set4ByIndex(i, 4); } //============================================================ memcpy ((unsigned char *)g_key, g_const, 0x100); bool flag = 0; for ( int i = 0; i < 16; i++) { if ((g_snDoube[i].d1 != g_key[i].d1) || (g_snDoube[i].d2 != g_key[i].d2)) { flag = true ; break ; } } return false ; } |
1 | <br> |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 | unsigned char g_sn[0x48] = { 0x76, 0x47, 0x4b, 0x2b, 0x19, 0x26, 0x00, 0x9c, 0x45, 0x2b, 0x00, 0x62, 0x72, 0x00, 0x19, 0x02, //0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, //0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF, 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF, 0x11, 0x22, 0x33, 0x44 }; /***************************************************************** 用途:输出sn进行字节交换 ******************************************************************/ void SnSwap(unsigned char *sn, unsigned char *newSn) { for ( int i = 0; i < 16; i++) { int index = (7 * (i / 4) + 2 * (i % 4)) % 4; int location = (i / 4 + i % 4 + 2 * (i / 4)) % 4; newSn[4 * index + location] = sn[i]; } } unsigned char g_const2[256] = { 0x10, 0x57, 0x02, 0x39, 0xac, 0xa8, 0x37, 0x40, 0x72, 0xac, 0xb9, 0x94, 0xf9, 0x30, 0x42, 0x40, 0x14, 0xfd, 0xeb, 0xbc, 0x29, 0x01, 0x68, 0xc0, 0x9e, 0x40, 0x1b, 0x51, 0xbd, 0xa2, 0x3b, 0x40, 0x0a, 0x64, 0x78, 0x4f, 0xbc, 0x94, 0x33, 0x40, 0x7a, 0xaf, 0x12, 0x4b, 0x96, 0xa6, 0x41, 0x40, 0x24, 0x7f, 0x12, 0x1f, 0xf1, 0xb5, 0x62, 0x40, 0x47, 0x34, 0x42, 0x79, 0x4e, 0xef, 0x55, 0x40, 0xe4, 0x68, 0x23, 0x75, 0x16, 0x09, 0x57, 0xc0, 0xa0, 0x0e, 0x7e, 0x03, 0x1b, 0x5a, 0x03, 0xc0, 0xe1, 0x58, 0x3b, 0x08, 0xbb, 0x5f, 0x66, 0x40, 0x43, 0xa9, 0xe4, 0xc7, 0x1a, 0x68, 0x45, 0x40, 0x4e, 0x05, 0x8f, 0x75, 0x0d, 0xe8, 0x4f, 0x40, 0x84, 0xb8, 0x8d, 0xfb, 0xa7, 0x09, 0x2d, 0xc0, 0x88, 0x62, 0xc9, 0xba, 0xc4, 0x2d, 0x6c, 0x40, 0x57, 0xfc, 0x71, 0x2c, 0x8a, 0x9e, 0x3c, 0x40, 0xc0, 0x48, 0xde, 0x90, 0xc3, 0xc5, 0x63, 0x40, 0x2e, 0x6f, 0xea, 0xff, 0x7a, 0x47, 0x49, 0x40, 0x00, 0x9a, 0x80, 0x4f, 0xf2, 0xbf, 0xe6, 0x3f, 0xa3, 0x3e, 0x95, 0x71, 0x33, 0x71, 0x4b, 0x40, 0x5c, 0xbe, 0x88, 0x7a, 0xf9, 0xc6, 0x56, 0x40, 0xed, 0x5f, 0x6b, 0x3d, 0xf4, 0xf1, 0x59, 0x40, 0xe8, 0xa1, 0xf8, 0x94, 0xd8, 0xe6, 0x43, 0x40, 0x4c, 0x3c, 0xb5, 0xa8, 0xa4, 0x56, 0x3b, 0x40, 0x53, 0xf5, 0x6e, 0x7f, 0x83, 0x51, 0x70, 0x40, 0xcd, 0xfb, 0x5f, 0xed, 0x0e, 0x09, 0x57, 0x40, 0xca, 0x13, 0xbb, 0x54, 0x2a, 0x42, 0x58, 0x40, 0xfe, 0x3a, 0x53, 0x73, 0xd1, 0x60, 0x39, 0x40, 0xf0, 0x2d, 0xb0, 0x58, 0x6f, 0x46, 0x6a, 0x40, 0xdc, 0xc8, 0x2f, 0x33, 0x3b, 0x90, 0x3f, 0x40, 0x1b, 0xf8, 0x44, 0x94, 0xdc, 0x50, 0x50, 0x40, 0x79, 0x6e, 0x1c, 0x4c, 0xa6, 0xb3, 0x39, 0x40, }; unsigned char g_const[256] = { 0xEE, 0xB9, 0x17, 0x1C, 0x0B, 0x53, 0x56, 0x40, 0xB0, 0x8F, 0x20, 0x7B, 0x1F, 0xCB, 0x53, 0xC0, 0x3E, 0xDE, 0xDA, 0xB2, 0xD8, 0xCD, 0x5B, 0xC0, 0xC2, 0xE0, 0x4F, 0x80, 0x24, 0xB8, 0x01, 0x40, 0x28, 0xD9, 0xAE, 0x09, 0x1D, 0x45, 0x4D, 0x40, 0xBC, 0xBF, 0xB0, 0xBA, 0xA4, 0x10, 0x3D, 0x40, 0x59, 0x3D, 0x04, 0xF9, 0x44, 0x0D, 0x49, 0x40, 0x79, 0xF8, 0x57, 0x7F, 0x3F, 0xE8, 0x45, 0x40, 0x2A, 0x3E, 0xB7, 0x6F, 0x3D, 0x49, 0x43, 0xC0, 0x90, 0x47, 0xA1, 0x02, 0x41, 0x03, 0x18, 0xC0, 0xFE, 0x3C, 0xD8, 0x6E, 0x3F, 0xD2, 0x57, 0x40, 0x74, 0xE5, 0x05, 0xB8, 0x4F, 0xEE, 0x37, 0x40, 0x93, 0x55, 0xC6, 0x7F, 0xA9, 0x8D, 0x5F, 0x40, 0xCC, 0x05, 0x2B, 0xFE, 0xD1, 0x91, 0x4B, 0xC0, 0x48, 0xD3, 0x63, 0xE2, 0xEE, 0x42, 0x44, 0x40, 0x40, 0x09, 0xC7, 0x44, 0xAB, 0x39, 0x35, 0x40, 0x50, 0xB7, 0xF3, 0x1A, 0xDC, 0xAB, 0x0F, 0x40, 0x54, 0xCC, 0x0B, 0x4B, 0x2B, 0xA0, 0x2B, 0x40, 0x30, 0x9F, 0xBB, 0xE1, 0xD4, 0x2C, 0x50, 0x40, 0x18, 0xCF, 0x21, 0x80, 0x1F, 0x70, 0x26, 0xC0, 0x0A, 0x5D, 0x83, 0xEA, 0x86, 0x55, 0x51, 0x40, 0x94, 0xB7, 0xE2, 0x65, 0xF3, 0xE2, 0x42, 0x40, 0xB1, 0x21, 0x5C, 0x03, 0x15, 0xE7, 0x48, 0x40, 0xC0, 0x01, 0xF6, 0xC3, 0x5A, 0xAE, 0xF0, 0x3F, 0x34, 0xEE, 0x29, 0xD0, 0x23, 0x42, 0x1F, 0x40, 0x84, 0x01, 0x69, 0x25, 0xDD, 0x93, 0x3D, 0x40, 0x58, 0xE4, 0xB8, 0x8B, 0x3C, 0x46, 0x20, 0x40, 0x38, 0xF8, 0x7B, 0x85, 0x84, 0x07, 0x27, 0x40, 0x70, 0x16, 0x1F, 0x32, 0x58, 0x23, 0x18, 0xC0, 0xB8, 0xD5, 0x58, 0x08, 0xC3, 0x2F, 0x20, 0xC0, 0x54, 0x6B, 0x43, 0x4A, 0xF2, 0x89, 0x39, 0x40, 0xD8, 0x9E, 0x2F, 0xD1, 0x0F, 0xA4, 0xFA, 0x3F, }; typedef struct doubleInfo { double d1; double d2; }doubleInfo; vector<doubleInfo> g_snDoube; vector<doubleInfo> g_newVector; doubleInfo g_key[16]; /***************************************************************** 用途:创建sn浮点向量 ******************************************************************/ void sn2DoubleVector(unsigned char * sn) { doubleInfo d; d.d2 = 0; for ( int i = 0; i < 16; i++) { d.d1 = ( double )sn[i]; g_snDoube.push_back(d); } } /***************************************************************** 用途:将g_snDoube进行二元一次方程变换 ******************************************************************/ void SnF1( int index) { int i; double d11, d12; double c11, c12; doubleInfo strDoubleInfo; double DoubleConst[32][2]; DoubleConst[16][0] = 0.8872448700399544; DoubleConst[16][1] = 0.4612987541580665; DoubleConst[17][0] = 1.0; DoubleConst[17][1] = -2.449293598294706e-16; DoubleConst[18][0] = 1.0; DoubleConst[18][1] = 0.0; DoubleConst[19][0] = 0.8661842563768242; DoubleConst[19][1] = 0.4997247582469054; DoubleConst[20][0] = 1.0; DoubleConst[20][1] = -2.449293598294706e-16; DoubleConst[21][0] = 0.8661842563768242; DoubleConst[21][1] = 0.4997247582469054; DoubleConst[22][0] = 0.9985971885883369; DoubleConst[22][1] = 0.052949550927931; DoubleConst[23][0] = 0.9953266793156615; DoubleConst[23][1] = -0.09656501148168593; DoubleConst[24][0] = 1.0; DoubleConst[24][1] = 0.0; DoubleConst[25][0] = 0.9985971885883369; DoubleConst[25][1] = 0.052949550927931; DoubleConst[26][0] = 0.9945026452220342; DoubleConst[26][1] = 0.1047114542272076; DoubleConst[27][0] = 0.9878936003329053; DoubleConst[27][1] = 0.1551329572376227; DoubleConst[28][0] = 0.8661842563768242; DoubleConst[28][1] = 0.4997247582469054; DoubleConst[29][0] = 0.9953266793156615; DoubleConst[29][1] = -0.09656501148168593; DoubleConst[30][0] = 0.9878936003329053; DoubleConst[30][1] = 0.1551329572376227; DoubleConst[31][0] = 0.7738490104360864; DoubleConst[31][1] = 0.6333701201091585; DoubleConst[0][0] = 0.6276739465982339; DoubleConst[0][1] = -0.7784763430970766; DoubleConst[1][0] = -0.963553239351518; DoubleConst[1][1] = 0.2675166442208714; DoubleConst[2][0] = 1.0; DoubleConst[2][1] = -2.449293598294706e-16; DoubleConst[3][0] = 1.0; DoubleConst[3][1] = 0.0; DoubleConst[4][0] = -0.963553239351518; DoubleConst[8][1] = -2.449293598294706e-16; DoubleConst[4][1] = 0.2675166442208714; DoubleConst[5][0] = 1.0; DoubleConst[5][1] = 0.0; DoubleConst[6][0] = 0.7316273320795593; DoubleConst[6][1] = -0.6817048092496827; DoubleConst[7][0] = 0.9954095040352869; DoubleConst[7][1] = -0.09570746719156305; DoubleConst[8][0] = 1.0; DoubleConst[9][0] = 0.7316273320795593; DoubleConst[9][1] = -0.6817048092496827; DoubleConst[10][0] = 0.9393388792184448; DoubleConst[10][1] = 0.3429904809009076; DoubleConst[11][0] = 0.9993790498804485; DoubleConst[11][1] = 0.03523513388724686; DoubleConst[12][0] = 1.0; DoubleConst[12][1] = 0.0; DoubleConst[13][0] = 0.9954095040352869; DoubleConst[13][1] = -0.09570746719156305; DoubleConst[14][0] = 0.9993790498804485; DoubleConst[14][1] = 0.03523513388724686; DoubleConst[15][0] = 0.933838571018358; DoubleConst[15][1] = -0.357694734764703; for (i = 0; i < 16; i++) { strDoubleInfo = g_snDoube.at(i); d11 = strDoubleInfo.d1; d12 = strDoubleInfo.d2; c11 = DoubleConst[index+ i][0]; c12 = DoubleConst[index+ i][1]; strDoubleInfo.d1 = c11 * d11 - c12 * d12; strDoubleInfo.d2 = d11 * c12 + d12 * c11; g_snDoube[i] = strDoubleInfo; } } /***************************************************************** 用途:取0 4 8 12 或1 5 9 13 或 2 6 10 14 或3 7 11 15 ******************************************************************/ void Fecth4ByIndex( int index, int max) { if ( false == g_newVector.empty()) { g_newVector.erase(g_newVector.begin(), g_newVector.end()); } for ( int i = 0; i < max; i++) { g_newVector.push_back(g_snDoube[i * 4 + index]); } } /***************************************************************** 用途:取0 1 2 3 或4 5 6 7或8 9 10 11或12 13 14 15 ******************************************************************/ void Fecth1ByIndex( int index, int max) { if ( false == g_newVector.empty()) { g_newVector.erase(g_newVector.begin(), g_newVector.end()); } for ( int i = 0; i < max; i++) { g_newVector.push_back(g_snDoube[index * 4 + i]); } } /***************************************************************** 用途:设置0 4 8 12 或1 5 9 13 或 2 6 10 14 或3 7 11 15 ******************************************************************/ void Set4ByIndex( int index, int max) { for ( int i = 0; i < max; i++) { g_snDoube[i * 4 + index] = g_newVector[i]; } } /***************************************************************** 用途:设置0 1 2 3 或4 5 6 7或8 9 10 11或12 13 14 15 ******************************************************************/ void Set1ByIndex( int index, int max) { for ( int i = 0; i < max; i++) { g_snDoube[index * 4 + i] = g_newVector[i]; } } /***************************************************************** 用途:创建用于计算的常量向量 ******************************************************************/ void CreateConstVetor(vector<doubleInfo> *tempVector) { int cnt = 4; int deta = 0; double doubleValue; doubleInfo constInfo; double DoubleCnt = ( double )cnt; for ( int i = 0; i < 4; i++) { doubleValue = ( double )deta * 3.14159265354 / DoubleCnt; constInfo.d1 = cos (doubleValue); constInfo.d2 = sin (doubleValue); tempVector->push_back(constInfo); deta -= 2; } } /***************************************************************** 用途:进行二元一次方程第二次变换 ******************************************************************/ void SnF2ByIndex( int index1, int index2, int constIndex) { double d11, d12; double d21, d22; double c11, c12; //创建常量向量 vector<doubleInfo> DoubleConst; CreateConstVetor(&DoubleConst); d11 = g_newVector[index1].d1; d12 = g_newVector[index1].d2; d21 = g_newVector[index2].d1; d22 = g_newVector[index2].d2; c11 = DoubleConst[constIndex].d1; c12 = DoubleConst[constIndex].d2; g_newVector[index2].d1 = (d11 - d21)*c11 - (d12 - d22)*c12; g_newVector[index2].d2 = (d11 - d21)*c12 + (d12 - d22)*c11; g_newVector[index1].d1 = d11 + d21; g_newVector[index1].d2 = d12 + d22; } /***************************************************************** 用途:向量索引交换 ******************************************************************/ void SnSwap( int index1, int index2) { doubleInfo strDoubleInfo1; doubleInfo strDoubleInfo2; strDoubleInfo1 = g_newVector[index1]; strDoubleInfo2 = g_newVector[index2]; g_newVector[index1] = strDoubleInfo2; g_newVector[index2] = strDoubleInfo1; } /***************************************************************** 用途:二元一次方程第二次变换以及进行向量切换 ******************************************************************/ void SnF2AndSwap( void ) { SnF2ByIndex(0, 2, 0); SnF2ByIndex(1, 3, 1); SnF2ByIndex(0, 1, 0); SnF2ByIndex(2, 3, 0); SnSwap(1, 2); int xxxx = 1; } /***************************************************************** 用途:创建用于计算的常量向量 ******************************************************************/ void CreateConstVetor2(vector<doubleInfo> *tempVector) { int cnt = 4; int deta = 0; double doubleValue; doubleInfo constInfo; double DoubleCnt = ( double )cnt; for ( int i = 0; i < 4; i++) { doubleValue = ( double )deta * 3.14159265354 / DoubleCnt; constInfo.d1 = cos (doubleValue); constInfo.d2 = sin (doubleValue); tempVector->push_back(constInfo); deta += 2; } } /***************************************************************** 用途:进行二元一次方程第二次变换 ******************************************************************/ void SnF2ByIndex2( int index1, int index2, int constIndex) { double d11, d12; double d21, d22; double c11, c12; //创建常量向量 vector<doubleInfo> DoubleConst; CreateConstVetor2(&DoubleConst); d11 = g_newVector[index1].d1; d12 = g_newVector[index1].d2; d21 = g_newVector[index2].d1; d22 = g_newVector[index2].d2; c11 = DoubleConst[constIndex].d1; c12 = DoubleConst[constIndex].d2; g_newVector[index2].d1 = (d11 - d21)*c11 - (d12 - d22)*c12; g_newVector[index2].d2 = (d11 - d21)*c12 + (d12 - d22)*c11; g_newVector[index1].d1 = d11 + d21; g_newVector[index1].d2 = d12 + d22; } /***************************************************************** 用途:二元一次方程第二次变换以及进行向量切换 ******************************************************************/ void DivLoop( int loopCnt) { double doubleCnt = loopCnt; for ( int i = 0; i < loopCnt; i++) { g_newVector[i].d1 = g_newVector[i].d1 / doubleCnt; g_newVector[i].d2 = g_newVector[i].d2 / doubleCnt; } } /***************************************************************** 用途:二元一次方程第二次变换以及进行向量切换 ******************************************************************/ void SnF2AndSwap2( void ) { SnF2ByIndex2(0, 2, 0); SnF2ByIndex2(1, 3, 1); SnF2ByIndex2(0, 1, 0); SnF2ByIndex2(2, 3, 0); SnSwap(1, 2); DivLoop(4); int xxxx = 1; } bool encrypt( char * sn) { //第一步进行sn字节交换 unsigned char newSn[16]; SnSwap(g_sn, newSn); //第二步,将newSn转换到g_snDoube sn2DoubleVector(newSn); //第三步,进行二元一次方程变换 SnF1(0); //第四步,执行二元一次方程变换 for ( int i = 0; i < 4; i++) { Fecth4ByIndex(i, 4); SnF2AndSwap(); Set4ByIndex(i, 4); } //第五步,执行二元一次方程变换 for ( int i = 0; i < 4; i++) { Fecth1ByIndex(i, 4); SnF2AndSwap(); Set1ByIndex(i, 4); } //第六步 SnF1(16); //第七步,执行二元一次方程变换 for ( int i = 0; i < 4; i++) { Fecth1ByIndex(i, 4); SnF2AndSwap2(); Set1ByIndex(i, 4); } //第八步,执行二元一次方程变换 for ( int i = 0; i < 4; i++) { Fecth4ByIndex(i, 4); SnF2AndSwap2(); Set4ByIndex(i, 4); } //============================================================ memcpy ((unsigned char *)g_key, g_const, 0x100); bool flag = 0; for ( int i = 0; i < 16; i++) { if ((g_snDoube[i].d1 != g_key[i].d1) || (g_snDoube[i].d2 != g_key[i].d2)) { flag = true ; break ; } } return false ; } |
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下面是解密算法代码
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 | /***************************************************************** 用途:乘以4.0 ******************************************************************/ void MulLoop( int loopCnt) { double doubleCnt = loopCnt; for ( int i = 0; i < loopCnt; i++) { g_newVector[i].d1 = g_newVector[i].d1 * doubleCnt; g_newVector[i].d2 = g_newVector[i].d2 * doubleCnt; } } /***************************************************************** 用途:进行二元一次方程第二次变换 ******************************************************************/ void DecodeSnF2ByIndex2( int index1, int index2, int constIndex) { double x11, x12; double x21, x22; double y11, y12; double y21, y22; double c1, c2; //创建常量向量 vector<doubleInfo> DoubleConst; CreateConstVetor2(&DoubleConst); y11 = g_newVector[index1].d1; y12 = g_newVector[index1].d2; y21 = g_newVector[index2].d1; y22 = g_newVector[index2].d2; c1 = DoubleConst[constIndex].d1; c2 = DoubleConst[constIndex].d2; double m1 = (y21 *c1 + y22*c2) / (c1*c1 + c2*c2); double m2 = (y22 *c1 - y21*c2) / (c1*c1 + c2*c2); //x21 = (y11 - m1) / 2; //x22 = (y12 - m2) / 2; //x11 = y11 - x21; //x12 = y12 - x22; x11 = (y11 + m1) / 2.0; x12 = (y12 + m2) / 2.0; x21 = (y11 - m1) / 2.0; x22 = (y12 - m2) / 2.0; g_newVector[index1].d1 = x11; g_newVector[index1].d2 = x12; g_newVector[index2].d1 = x21; g_newVector[index2].d2 = x22; } /***************************************************************** 用途:二元一次方程第二次变换以及进行向量切换 ******************************************************************/ void DecodeSnF2AndSwap2( void ) { MulLoop(4); SnSwap(2, 1); DecodeSnF2ByIndex2(2, 3, 0); DecodeSnF2ByIndex2(0, 1, 0); DecodeSnF2ByIndex2(1, 3, 1); DecodeSnF2ByIndex2(0, 2, 0); int xxxx = 1; } /***************************************************************** 用途:将g_snDoube进行二元一次方程变换 ******************************************************************/ void decodeSnF1( int index) { int i; double x1, x2; double y1, y2; double c1, c2; double DoubleConst[32][2]; DoubleConst[16][0] = 0.8872448700399544; DoubleConst[16][1] = 0.4612987541580665; DoubleConst[17][0] = 1.0; DoubleConst[17][1] = -2.449293598294706e-16; DoubleConst[18][0] = 1.0; DoubleConst[18][1] = 0.0; DoubleConst[19][0] = 0.8661842563768242; DoubleConst[19][1] = 0.4997247582469054; DoubleConst[20][0] = 1.0; DoubleConst[20][1] = -2.449293598294706e-16; DoubleConst[21][0] = 0.8661842563768242; DoubleConst[21][1] = 0.4997247582469054; DoubleConst[22][0] = 0.9985971885883369; DoubleConst[22][1] = 0.052949550927931; DoubleConst[23][0] = 0.9953266793156615; DoubleConst[23][1] = -0.09656501148168593; DoubleConst[24][0] = 1.0; DoubleConst[24][1] = 0.0; DoubleConst[25][0] = 0.9985971885883369; DoubleConst[25][1] = 0.052949550927931; DoubleConst[26][0] = 0.9945026452220342; DoubleConst[26][1] = 0.1047114542272076; DoubleConst[27][0] = 0.9878936003329053; DoubleConst[27][1] = 0.1551329572376227; DoubleConst[28][0] = 0.8661842563768242; DoubleConst[28][1] = 0.4997247582469054; DoubleConst[29][0] = 0.9953266793156615; DoubleConst[29][1] = -0.09656501148168593; DoubleConst[30][0] = 0.9878936003329053; DoubleConst[30][1] = 0.1551329572376227; DoubleConst[31][0] = 0.7738490104360864; DoubleConst[31][1] = 0.6333701201091585; DoubleConst[0][0] = 0.6276739465982339; DoubleConst[0][1] = -0.7784763430970766; DoubleConst[1][0] = -0.963553239351518; DoubleConst[1][1] = 0.2675166442208714; DoubleConst[2][0] = 1.0; DoubleConst[2][1] = -2.449293598294706e-16; DoubleConst[3][0] = 1.0; DoubleConst[3][1] = 0.0; DoubleConst[4][0] = -0.963553239351518; DoubleConst[8][1] = -2.449293598294706e-16; DoubleConst[4][1] = 0.2675166442208714; DoubleConst[5][0] = 1.0; DoubleConst[5][1] = 0.0; DoubleConst[6][0] = 0.7316273320795593; DoubleConst[6][1] = -0.6817048092496827; DoubleConst[7][0] = 0.9954095040352869; DoubleConst[7][1] = -0.09570746719156305; DoubleConst[8][0] = 1.0; DoubleConst[9][0] = 0.7316273320795593; DoubleConst[9][1] = -0.6817048092496827; DoubleConst[10][0] = 0.9393388792184448; DoubleConst[10][1] = 0.3429904809009076; DoubleConst[11][0] = 0.9993790498804485; DoubleConst[11][1] = 0.03523513388724686; DoubleConst[12][0] = 1.0; DoubleConst[12][1] = 0.0; DoubleConst[13][0] = 0.9954095040352869; DoubleConst[13][1] = -0.09570746719156305; DoubleConst[14][0] = 0.9993790498804485; DoubleConst[14][1] = 0.03523513388724686; DoubleConst[15][0] = 0.933838571018358; DoubleConst[15][1] = -0.357694734764703; for (i = 0; i < 16; i++) { y1 = g_snDoube[i].d1; y2 = g_snDoube[i].d2; c1 = DoubleConst[index + i][0]; c2 = DoubleConst[index + i][1]; x1 = (y1*c1 + y2*c2) / (c1*c1 + c2*c2); x2 = (y2*c1 - y1*c2) / (c1*c1 + c2*c2); g_snDoube[i].d1 = x1; g_snDoube[i].d2 = x2; } } /***************************************************************** 用途:进行二元一次方程第二次变换 ******************************************************************/ void DecodeSnF2ByIndex( int index1, int index2, int constIndex) { double x11, x12; double x21, x22; double y11, y12; double y21, y22; double c1, c2; //创建常量向量 vector<doubleInfo> DoubleConst; CreateConstVetor(&DoubleConst); y11 = g_newVector[index1].d1; y12 = g_newVector[index1].d2; y21 = g_newVector[index2].d1; y22 = g_newVector[index2].d2; c1 = DoubleConst[constIndex].d1; c2 = DoubleConst[constIndex].d2; double m1 = (y21 *c1 + y22*c2) / (c1*c1 + c2*c2); double m2 = (y22 *c1 - y21*c2) / (c1*c1 + c2*c2); //x21 = (y11 - m1) / 2; //x22 = (y12 - m2) / 2; //x11 = y11 - x21; //x12 = y12 - x22; x11 = (y11 + m1) / 2.0; x12 = (y12 + m2) / 2.0; x21 = (y11 - m1) / 2.0; x22 = (y12 - m2) / 2.0; g_newVector[index1].d1 = x11; g_newVector[index1].d2 = x12; g_newVector[index2].d1 = x21; g_newVector[index2].d2 = x22; } /***************************************************************** 用途:二元一次方程第二次变换以及进行向量切换 ******************************************************************/ void DecodeSnF2AndSwap( void ) { SnSwap(2, 1); DecodeSnF2ByIndex(2, 3, 0); DecodeSnF2ByIndex(0, 1, 0); DecodeSnF2ByIndex(1, 3, 1); DecodeSnF2ByIndex(0, 2, 0); int xxxx = 1; } int round_double( double number) { return (number > 0.0) ? (number + 0.5) : (number - 0.5); } /***************************************************************** 用途:创建sn浮点向量 ******************************************************************/ void DecodeSn2DoubleVector(unsigned char * sn) { doubleInfo d; d.d2 = 0; for ( int i = 0; i < 16; i++) { sn[i] = round_double(g_snDoube[i].d1); } sn[16] = 0; } /***************************************************************** 用途:输出sn进行字节交换 ******************************************************************/ void DecodeSnSwap(unsigned char *sn, unsigned char *newSn) { //0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 //00 bb 22 99 55 cc 77 ee aa 11 88 33 ff 66 dd 44 //00 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff sn[0] = newSn[0]; sn[1] = newSn[9]; sn[2] = newSn[2]; sn[3] = newSn[11]; sn[4] = newSn[15]; sn[5] = newSn[4]; sn[6] = newSn[13]; sn[7] = newSn[6]; sn[8] = newSn[10]; sn[9] = newSn[3]; sn[10] = newSn[8]; sn[11] = newSn[1]; sn[12] = newSn[5]; sn[13] = newSn[14]; sn[14] = newSn[7]; sn[15] = newSn[12]; } void decrypt( void ) { //为解密后字符 unsigned char newSn[16]; memcpy ((unsigned char *)g_key, g_const, 0x100); int flag = 0; for ( int i = 0; i < 16; i++) { if ((g_snDoube[i].d1 != g_key[i].d1) || (g_snDoube[i].d2 != g_key[i].d2)) { flag = 1; break ; } } //第八步,执行二元一次方程变换 for ( int i = 3; i >= 0; i--) { Fecth4ByIndex(i, 4); DecodeSnF2AndSwap2(); Set4ByIndex(i, 4); } //第七步,执行二元一次方程变换 for ( int i = 3; i >= 0; i--) { Fecth1ByIndex(i, 4); DecodeSnF2AndSwap2(); Set1ByIndex(i, 4); } //第六步 decodeSnF1(16); //第五步,执行二元一次方程变换 for ( int i = 3; i >= 0; i--) { Fecth1ByIndex(i, 4); DecodeSnF2AndSwap(); Set1ByIndex(i, 4); } //第四步,执行二元一次方程变换 for ( int i = 3; i >= 0; i--) { Fecth4ByIndex(i, 4); DecodeSnF2AndSwap(); Set4ByIndex(i, 4); } //第三步,进行二元一次方程变换 decodeSnF1(0); //第二步,将newSn转换到g_snDoube unsigned char decodeNewSn[17]; DecodeSn2DoubleVector(decodeNewSn); //第一步进行sn字节交换 DecodeSnSwap(newSn, decodeNewSn); } |
二、check2(401710)
1、TEA算法
sub_403A30函数为TEA算法,同时要求解密后最后一个int为0x10 实际上是前面的size。
2、sub_401330貌似是AES算法 卡在这里。
3、虚拟机代码
sub_401330函数里面有一段虚拟机代码其主要功能如下:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | unsigned char gvmConst[16][16] = { 0x01, 0x0E, 0x9A, 0x22, 0x59, 0x81, 0x58, 0x9A, 0xE7, 0x5A, 0x3E, 0x86, 0x62, 0xEB, 0x57, 0xD2, 0x00, 0x55, 0xC6, 0x7F, 0xA9, 0x8D, 0x5F, 0x40, 0xE8, 0x99, 0x31, 0xE8, 0x9D, 0x60, 0x00, 0x08, 0x7E, 0x6E, 0xCF, 0xD4, 0x92, 0xBC, 0x4B, 0x27, 0xC0, 0xCF, 0xF2, 0x65, 0x6D, 0x3C, 0x49, 0xD1, 0xAA, 0xB1, 0x45, 0xA8, 0x6D, 0x75, 0x9B, 0xC1, 0xDF, 0x75, 0x60, 0xDD, 0x8D, 0xDD, 0x13, 0xDA, 0xD3, 0x98, 0x3E, 0xEF, 0x41, 0x24, 0x75, 0xC8, 0x81, 0xEB, 0x87, 0xAD, 0xEC, 0xD7, 0xCE, 0x7C, 0xE6, 0x49, 0xA1, 0xF5, 0x8B, 0x3C, 0x3A, 0x34, 0x54, 0x49, 0x5A, 0xE9, 0xD9, 0x94, 0x49, 0x33, 0xD4, 0x58, 0x36, 0xB7, 0x95, 0x7C, 0x43, 0x7F, 0x14, 0x97, 0xC4, 0xD2, 0xF8, 0x40, 0x0A, 0xAE, 0x20, 0xEC, 0x91, 0x39, 0xAB, 0xD0, 0xAB, 0x0D, 0xFF, 0x99, 0xF1, 0xE4, 0x26, 0x0D, 0xB8, 0xD7, 0x60, 0xAF, 0xCE, 0x10, 0xF5, 0xD3, 0x8D, 0x6F, 0xE1, 0x44, 0x49, 0xBD, 0x19, 0x04, 0x43, 0x13, 0xB8, 0x25, 0x88, 0xCF, 0x13, 0xF5, 0x23, 0xC2, 0xEC, 0x6C, 0xD2, 0x26, 0xCA, 0x61, 0x6A, 0xF1, 0x07, 0x61, 0x83, 0xB4, 0xF2, 0xB2, 0x0E, 0xDB, 0x13, 0xF6, 0x47, 0x66, 0x0A, 0xF2, 0x04, 0x75, 0x88, 0x41, 0x41, 0x69, 0x9B, 0xB4, 0x62, 0xAB, 0x77, 0xD8, 0xB0, 0x8D, 0xBD, 0xB9, 0xDA, 0x7C, 0x94, 0x90, 0xDE, 0x5D, 0x66, 0x22, 0xD0, 0x86, 0x75, 0xD4, 0x97, 0xE0, 0x7F, 0x26, 0x93, 0x95, 0x0C, 0xE6, 0xDE, 0x8C, 0x97, 0x52, 0xBC, 0x27, 0xE0, 0x8A, 0x0C, 0xAA, 0x5D, 0x33, 0xD6, 0xD6, 0xBC, 0x38, 0x76, 0x17, 0xDA, 0x1A, 0xA6, 0x91, 0xAF, 0xCE, 0x31, 0x71, 0xD0, 0xE8, 0xA2, 0xE4, 0xB7, 0x36, 0xC5, 0x56, 0x20, 0x64, 0x79, 0x71, 0xC0, 0xEE, 0x75, 0xDB, 0x9D, 0xDD, 0xA3, 0x0D, }; void vmEncrypt( void ) { unsigned char sn[4][4] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF, }; unsigned char temSn[4][4] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF, }; sn[0][0] = temSn[0][0]; sn[0][1] = temSn[1][0]; sn[0][2] = temSn[2][0]; sn[0][3] = temSn[3][0]; sn[1][0] = temSn[0][1]; sn[1][1] = temSn[1][1]; sn[1][2] = temSn[2][1]; sn[1][3] = temSn[3][1]; sn[2][0] = temSn[0][2]; sn[2][1] = temSn[1][2]; sn[2][2] = temSn[2][2]; sn[2][3] = temSn[3][2]; sn[3][0] = temSn[0][3]; sn[3][1] = temSn[1][3]; sn[3][2] = temSn[2][3]; sn[3][3] = temSn[3][3]; int k = 0; int index = 15; for ( int i = 0; i < 4; i++) { for ( int j = 0; j < 4; j++) { sn[j][i] = sn[j][i] ^ gvmConst[index][k]; k++; } } int xxxx = 1; } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 | /***************************************************************** 用途:乘以4.0 ******************************************************************/ void MulLoop( int loopCnt) { double doubleCnt = loopCnt; for ( int i = 0; i < loopCnt; i++) { g_newVector[i].d1 = g_newVector[i].d1 * doubleCnt; g_newVector[i].d2 = g_newVector[i].d2 * doubleCnt; } } /***************************************************************** 用途:进行二元一次方程第二次变换 ******************************************************************/ void DecodeSnF2ByIndex2( int index1, int index2, int constIndex) { double x11, x12; double x21, x22; double y11, y12; double y21, y22; double c1, c2; //创建常量向量 vector<doubleInfo> DoubleConst; CreateConstVetor2(&DoubleConst); y11 = g_newVector[index1].d1; y12 = g_newVector[index1].d2; y21 = g_newVector[index2].d1; y22 = g_newVector[index2].d2; c1 = DoubleConst[constIndex].d1; c2 = DoubleConst[constIndex].d2; double m1 = (y21 *c1 + y22*c2) / (c1*c1 + c2*c2); double m2 = (y22 *c1 - y21*c2) / (c1*c1 + c2*c2); //x21 = (y11 - m1) / 2; //x22 = (y12 - m2) / 2; //x11 = y11 - x21; //x12 = y12 - x22; x11 = (y11 + m1) / 2.0; x12 = (y12 + m2) / 2.0; x21 = (y11 - m1) / 2.0; x22 = (y12 - m2) / 2.0; g_newVector[index1].d1 = x11; g_newVector[index1].d2 = x12; g_newVector[index2].d1 = x21; g_newVector[index2].d2 = x22; } /***************************************************************** 用途:二元一次方程第二次变换以及进行向量切换 ******************************************************************/ void DecodeSnF2AndSwap2( void ) { MulLoop(4); SnSwap(2, 1); DecodeSnF2ByIndex2(2, 3, 0); DecodeSnF2ByIndex2(0, 1, 0); DecodeSnF2ByIndex2(1, 3, 1); DecodeSnF2ByIndex2(0, 2, 0); int xxxx = 1; } /***************************************************************** 用途:将g_snDoube进行二元一次方程变换 ******************************************************************/ void decodeSnF1( int index) { int i; double x1, x2; double y1, y2; double c1, c2; double DoubleConst[32][2]; DoubleConst[16][0] = 0.8872448700399544; DoubleConst[16][1] = 0.4612987541580665; DoubleConst[17][0] = 1.0; DoubleConst[17][1] = -2.449293598294706e-16; DoubleConst[18][0] = 1.0; DoubleConst[18][1] = 0.0; DoubleConst[19][0] = 0.8661842563768242; DoubleConst[19][1] = 0.4997247582469054; DoubleConst[20][0] = 1.0; DoubleConst[20][1] = -2.449293598294706e-16; DoubleConst[21][0] = 0.8661842563768242; DoubleConst[21][1] = 0.4997247582469054; DoubleConst[22][0] = 0.9985971885883369; DoubleConst[22][1] = 0.052949550927931; DoubleConst[23][0] = 0.9953266793156615; DoubleConst[23][1] = -0.09656501148168593; DoubleConst[24][0] = 1.0; DoubleConst[24][1] = 0.0; DoubleConst[25][0] = 0.9985971885883369; DoubleConst[25][1] = 0.052949550927931; DoubleConst[26][0] = 0.9945026452220342; DoubleConst[26][1] = 0.1047114542272076; DoubleConst[27][0] = 0.9878936003329053; DoubleConst[27][1] = 0.1551329572376227; DoubleConst[28][0] = 0.8661842563768242; DoubleConst[28][1] = 0.4997247582469054; DoubleConst[29][0] = 0.9953266793156615; DoubleConst[29][1] = -0.09656501148168593; DoubleConst[30][0] = 0.9878936003329053; DoubleConst[30][1] = 0.1551329572376227; DoubleConst[31][0] = 0.7738490104360864; DoubleConst[31][1] = 0.6333701201091585; DoubleConst[0][0] = 0.6276739465982339; DoubleConst[0][1] = -0.7784763430970766; DoubleConst[1][0] = -0.963553239351518; DoubleConst[1][1] = 0.2675166442208714; DoubleConst[2][0] = 1.0; DoubleConst[2][1] = -2.449293598294706e-16; DoubleConst[3][0] = 1.0; DoubleConst[3][1] = 0.0; DoubleConst[4][0] = -0.963553239351518; DoubleConst[8][1] = -2.449293598294706e-16; DoubleConst[4][1] = 0.2675166442208714; DoubleConst[5][0] = 1.0; DoubleConst[5][1] = 0.0; DoubleConst[6][0] = 0.7316273320795593; DoubleConst[6][1] = -0.6817048092496827; DoubleConst[7][0] = 0.9954095040352869; DoubleConst[7][1] = -0.09570746719156305; DoubleConst[8][0] = 1.0; DoubleConst[9][0] = 0.7316273320795593; DoubleConst[9][1] = -0.6817048092496827; DoubleConst[10][0] = 0.9393388792184448; DoubleConst[10][1] = 0.3429904809009076; DoubleConst[11][0] = 0.9993790498804485; DoubleConst[11][1] = 0.03523513388724686; DoubleConst[12][0] = 1.0; DoubleConst[12][1] = 0.0; DoubleConst[13][0] = 0.9954095040352869; DoubleConst[13][1] = -0.09570746719156305; DoubleConst[14][0] = 0.9993790498804485; DoubleConst[14][1] = 0.03523513388724686; DoubleConst[15][0] = 0.933838571018358; DoubleConst[15][1] = -0.357694734764703; for (i = 0; i < 16; i++) { y1 = g_snDoube[i].d1; y2 = g_snDoube[i].d2; c1 = DoubleConst[index + i][0]; c2 = DoubleConst[index + i][1]; x1 = (y1*c1 + y2*c2) / (c1*c1 + c2*c2); x2 = (y2*c1 - y1*c2) / (c1*c1 + c2*c2); g_snDoube[i].d1 = x1; g_snDoube[i].d2 = x2; } } /***************************************************************** 用途:进行二元一次方程第二次变换 ******************************************************************/ void DecodeSnF2ByIndex( int index1, int index2, int constIndex) { double x11, x12; double x21, x22; double y11, y12; double y21, y22; double c1, c2; //创建常量向量 vector<doubleInfo> DoubleConst; CreateConstVetor(&DoubleConst); y11 = g_newVector[index1].d1; y12 = g_newVector[index1].d2; y21 = g_newVector[index2].d1; y22 = g_newVector[index2].d2; c1 = DoubleConst[constIndex].d1; c2 = DoubleConst[constIndex].d2; double m1 = (y21 *c1 + y22*c2) / (c1*c1 + c2*c2); double m2 = (y22 *c1 - y21*c2) / (c1*c1 + c2*c2); //x21 = (y11 - m1) / 2; //x22 = (y12 - m2) / 2; //x11 = y11 - x21; //x12 = y12 - x22; x11 = (y11 + m1) / 2.0; x12 = (y12 + m2) / 2.0; x21 = (y11 - m1) / 2.0; x22 = (y12 - m2) / 2.0; g_newVector[index1].d1 = x11; g_newVector[index1].d2 = x12; g_newVector[index2].d1 = x21; g_newVector[index2].d2 = x22; } /***************************************************************** 用途:二元一次方程第二次变换以及进行向量切换 ******************************************************************/ void DecodeSnF2AndSwap( void ) { SnSwap(2, 1); DecodeSnF2ByIndex(2, 3, 0); DecodeSnF2ByIndex(0, 1, 0); DecodeSnF2ByIndex(1, 3, 1); DecodeSnF2ByIndex(0, 2, 0); int xxxx = 1; } int round_double( double number) { return (number > 0.0) ? (number + 0.5) : (number - 0.5); } /***************************************************************** 用途:创建sn浮点向量 ******************************************************************/ void DecodeSn2DoubleVector(unsigned char * sn) { doubleInfo d; d.d2 = 0; for ( int i = 0; i < 16; i++) { sn[i] = round_double(g_snDoube[i].d1); } sn[16] = 0; } /***************************************************************** 用途:输出sn进行字节交换 ******************************************************************/ void DecodeSnSwap(unsigned char *sn, unsigned char *newSn) { //0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 //00 bb 22 99 55 cc 77 ee aa 11 88 33 ff 66 dd 44 //00 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff sn[0] = newSn[0]; sn[1] = newSn[9]; sn[2] = newSn[2]; sn[3] = newSn[11]; sn[4] = newSn[15]; sn[5] = newSn[4]; sn[6] = newSn[13]; sn[7] = newSn[6]; sn[8] = newSn[10]; sn[9] = newSn[3]; sn[10] = newSn[8]; sn[11] = newSn[1]; sn[12] = newSn[5]; sn[13] = newSn[14]; sn[14] = newSn[7]; sn[15] = newSn[12]; } void decrypt( void ) { //为解密后字符 unsigned char newSn[16]; memcpy ((unsigned char *)g_key, g_const, 0x100); int flag = 0; for ( int i = 0; i < 16; i++) { if ((g_snDoube[i].d1 != g_key[i].d1) || (g_snDoube[i].d2 != g_key[i].d2)) { flag = 1; break ; } } //第八步,执行二元一次方程变换 for ( int i = 3; i >= 0; i--) { Fecth4ByIndex(i, 4); DecodeSnF2AndSwap2(); Set4ByIndex(i, 4); } //第七步,执行二元一次方程变换 for ( int i = 3; i >= 0; i--) { Fecth1ByIndex(i, 4); DecodeSnF2AndSwap2(); Set1ByIndex(i, 4); } //第六步 decodeSnF1(16); //第五步,执行二元一次方程变换 for ( int i = 3; i >= 0; i--) { Fecth1ByIndex(i, 4); DecodeSnF2AndSwap(); Set1ByIndex(i, 4); } //第四步,执行二元一次方程变换 for ( int i = 3; i >= 0; i--) { Fecth4ByIndex(i, 4); DecodeSnF2AndSwap(); Set4ByIndex(i, 4); } //第三步,进行二元一次方程变换 decodeSnF1(0); //第二步,将newSn转换到g_snDoube unsigned char decodeNewSn[17]; DecodeSn2DoubleVector(decodeNewSn); //第一步进行sn字节交换 DecodeSnSwap(newSn, decodeNewSn); } |
二、check2(401710)
最后于 2018-12-17 12:57
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