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CRC32.cpp
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CRC32.cpp
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#include "CRC32.h"
unsigned int uiCRC32_Table[256] = {
0x00000000L, 0x77073096L, 0xEE0E612CL,
0x990951BAL, 0x076DC419L, 0x706AF48FL,
0xE963A535L, 0x9E6495A3L, 0x0EDB8832L,
0x79DCB8A4L, 0xE0D5E91EL, 0x97D2D988L,
0x09B64C2BL, 0x7EB17CBDL, 0xE7B82D07L,
0x90BF1D91L, 0x1DB71064L, 0x6AB020F2L,
0xF3B97148L, 0x84BE41DEL, 0x1ADAD47DL,
0x6DDDE4EBL, 0xF4D4B551L, 0x83D385C7L,
0x136C9856L, 0x646BA8C0L, 0xFD62F97AL,
0x8A65C9ECL, 0x14015C4FL, 0x63066CD9L,
0xFA0F3D63L, 0x8D080DF5L, 0x3B6E20C8L,
0x4C69105EL, 0xD56041E4L, 0xA2677172L,
0x3C03E4D1L, 0x4B04D447L, 0xD20D85FDL,
0xA50AB56BL, 0x35B5A8FAL, 0x42B2986CL,
0xDBBBC9D6L, 0xACBCF940L, 0x32D86CE3L,
0x45DF5C75L, 0xDCD60DCFL, 0xABD13D59L,
0x26D930ACL, 0x51DE003AL, 0xC8D75180L,
0xBFD06116L, 0x21B4F4B5L, 0x56B3C423L,
0xCFBA9599L, 0xB8BDA50FL, 0x2802B89EL,
0x5F058808L, 0xC60CD9B2L, 0xB10BE924L,
0x2F6F7C87L, 0x58684C11L, 0xC1611DABL,
0xB6662D3DL, 0x76DC4190L, 0x01DB7106L,
0x98D220BCL, 0xEFD5102AL, 0x71B18589L,
0x06B6B51FL, 0x9FBFE4A5L, 0xE8B8D433L,
0x7807C9A2L, 0x0F00F934L, 0x9609A88EL,
0xE10E9818L, 0x7F6A0DBBL, 0x086D3D2DL,
0x91646C97L, 0xE6635C01L, 0x6B6B51F4L,
0x1C6C6162L, 0x856530D8L, 0xF262004EL,
0x6C0695EDL, 0x1B01A57BL, 0x8208F4C1L,
0xF50FC457L, 0x65B0D9C6L, 0x12B7E950L,
0x8BBEB8EAL, 0xFCB9887CL, 0x62DD1DDFL,
0x15DA2D49L, 0x8CD37CF3L, 0xFBD44C65L,
0x4DB26158L, 0x3AB551CEL, 0xA3BC0074L,
0xD4BB30E2L, 0x4ADFA541L, 0x3DD895D7L,
0xA4D1C46DL, 0xD3D6F4FBL, 0x4369E96AL,
0x346ED9FCL, 0xAD678846L, 0xDA60B8D0L,
0x44042D73L, 0x33031DE5L, 0xAA0A4C5FL,
0xDD0D7CC9L, 0x5005713CL, 0x270241AAL,
0xBE0B1010L, 0xC90C2086L, 0x5768B525L,
0x206F85B3L, 0xB966D409L, 0xCE61E49FL,
0x5EDEF90EL, 0x29D9C998L, 0xB0D09822L,
0xC7D7A8B4L, 0x59B33D17L, 0x2EB40D81L,
0xB7BD5C3BL, 0xC0BA6CADL, 0xEDB88320L,
0x9ABFB3B6L, 0x03B6E20CL, 0x74B1D29AL,
0xEAD54739L, 0x9DD277AFL, 0x04DB2615L,
0x73DC1683L, 0xE3630B12L, 0x94643B84L,
0x0D6D6A3EL, 0x7A6A5AA8L, 0xE40ECF0BL,
0x9309FF9DL, 0x0A00AE27L, 0x7D079EB1L,
0xF00F9344L, 0x8708A3D2L, 0x1E01F268L,
0x6906C2FEL, 0xF762575DL, 0x806567CBL,
0x196C3671L, 0x6E6B06E7L, 0xFED41B76L,
0x89D32BE0L, 0x10DA7A5AL, 0x67DD4ACCL,
0xF9B9DF6FL, 0x8EBEEFF9L, 0x17B7BE43L,
0x60B08ED5L, 0xD6D6A3E8L, 0xA1D1937EL,
0x38D8C2C4L, 0x4FDFF252L, 0xD1BB67F1L,
0xA6BC5767L, 0x3FB506DDL, 0x48B2364BL,
0xD80D2BDAL, 0xAF0A1B4CL, 0x36034AF6L,
0x41047A60L, 0xDF60EFC3L, 0xA867DF55L,
0x316E8EEFL, 0x4669BE79L, 0xCB61B38CL,
0xBC66831AL, 0x256FD2A0L, 0x5268E236L,
0xCC0C7795L, 0xBB0B4703L, 0x220216B9L,
0x5505262FL, 0xC5BA3BBEL, 0xB2BD0B28L,
0x2BB45A92L, 0x5CB36A04L, 0xC2D7FFA7L,
0xB5D0CF31L, 0x2CD99E8BL, 0x5BDEAE1DL,
0x9B64C2B0L, 0xEC63F226L, 0x756AA39CL,
0x026D930AL, 0x9C0906A9L, 0xEB0E363FL,
0x72076785L, 0x05005713L, 0x95BF4A82L,
0xE2B87A14L, 0x7BB12BAEL, 0x0CB61B38L,
0x92D28E9BL, 0xE5D5BE0DL, 0x7CDCEFB7L,
0x0BDBDF21L, 0x86D3D2D4L, 0xF1D4E242L,
0x68DDB3F8L, 0x1FDA836EL, 0x81BE16CDL,
0xF6B9265BL, 0x6FB077E1L, 0x18B74777L,
0x88085AE6L, 0xFF0F6A70L, 0x66063BCAL,
0x11010B5CL, 0x8F659EFFL, 0xF862AE69L,
0x616BFFD3L, 0x166CCF45L, 0xA00AE278L,
0xD70DD2EEL, 0x4E048354L, 0x3903B3C2L,
0xA7672661L, 0xD06016F7L, 0x4969474DL,
0x3E6E77DBL, 0xAED16A4AL, 0xD9D65ADCL,
0x40DF0B66L, 0x37D83BF0L, 0xA9BCAE53L,
0xDEBB9EC5L, 0x47B2CF7FL, 0x30B5FFE9L,
0xBDBDF21CL, 0xCABAC28AL, 0x53B39330L,
0x24B4A3A6L, 0xBAD03605L, 0xCDD70693L,
0x54DE5729L, 0x23D967BFL, 0xB3667A2EL,
0xC4614AB8L, 0x5D681B02L, 0x2A6F2B94L,
0xB40BBE37L, 0xC30C8EA1L, 0x5A05DF1BL,
0x2D02EF8DL };
unsigned int CRC32(void *pData, size_t iLen)
{
unsigned int uiCRC32 = 0xFFFFFFFF;
unsigned char *pszData = (unsigned char*)pData;
for (size_t i = 0; i<iLen; ++i)
uiCRC32 = ((uiCRC32 >> 8) & 0x00FFFFFF) ^ uiCRC32_Table[(uiCRC32 ^ (unsigned int)*pszData++) & 0xFF];
return (uiCRC32 ^ 0xFFFFFFFF);
}