C # CRC32

Original: http://blog.csdn.net/yangang0201/article/details/1682181

usingSystem;usingSystem.IO;usingsystem.security;usingSystem.Security.Cryptography;usingSystem.Runtime.InteropServices;usingSystem.Text;namespacekernelcore.utility.encrypt{/// <summary>    ///CRC Validation///Fast detection algorithm/// </summary>     Public Sealed classCRC32 {Staticuint32[] Crctable = { 0x0,0x77073096,0xee0e612c,0x990951ba,0x76dc419,0x706af48f,0xe963a535,0X9E6495A3, 0xedb8832,0x79dcb8a4,0xe0d5e91e,0x97d2d988,0X9B64C2B,0X7EB17CBD,0xe7b82d07,0x90bf1d91, 0x1db71064,0x6ab020f2,0xf3b97148,0x84be41de,0x1adad47d,0x6ddde4eb,0xf4d4b551,0x83d385c7, 0x136c9856,0x646ba8c0,0xfd62f97a,0x8a65c9ec,0x14015c4f,0X63066CD9,0xfa0f3d63,0x8d080df5, 0x3b6e20c8,0x4c69105e,0xd56041e4,0xa2677172,0x3c03e4d1,0x4b04d447,0XD20D85FD,0xa50ab56b, 0X35B5A8FA,0x42b2986c,0xdbbbc9d6,0xacbcf940,0x32d86ce3,0x45df5c75,0XDCD60DCF,0xabd13d59, 0x26d930ac,0x51de003a,0xc8d75180,0xbfd06116,0x21b4f4b5,0x56b3c423,0xcfba9599,0xb8bda50f, 0x2802b89e,0x5f058808,0xc60cd9b2,0xb10be924,0x2f6f7c87,0x58684c11,0xc1611dab,0xb6662d3d, 0x76dc4190,0x1db7106,0X98D220BC,0xefd5102a,0x71b18589,0x6b6b51f,0x9fbfe4a5,0xe8b8d433, 0X7807C9A2,0xf00f934,0x9609a88e,0xe10e9818,0X7F6A0DBB,0x86d3d2d,0x91646c97,0XE6635C01, 0x6b6b51f4,0x1c6c6162,0x856530d8,0xf262004e,0x6c0695ed,0x1b01a57b,0x8208f4c1,0xf50fc457, 0x65b0d9c6,0x12b7e950,0x8bbeb8ea,0xfcb9887c,0X62DD1DDF,0x15da2d49,0X8CD37CF3,0xfbd44c65, 0x4db26158,0x3ab551ce,0xa3bc0074,0xd4bb30e2,0x4adfa541,0x3dd895d7,0xa4d1c46d,0XD3D6F4FB, 0x4369e96a,0X346ED9FC,0xad678846,0xda60b8d0,0x44042d73,0X33031DE5,0xaa0a4c5f,0XDD0D7CC9, 0x5005713c,0X270241AA,0xbe0b1010,0xc90c2086,0x5768b525,0x206f85b3,0xb966d409,0xce61e49f, 0x5edef90e,0x29d9c998,0xb0d09822,0XC7D7A8B4,0x59b33d17,0x2eb40d81,0xb7bd5c3b,0xc0ba6cad, 0xedb88320,0x9abfb3b6,0x3b6e20c,0x74b1d29a,0xead54739,0X9DD277AF,0x4db2615,0x73dc1683, 0xe3630b12,0x94643b84,0xd6d6a3e,0x7a6a5aa8,0xe40ecf0b,0x9309ff9d,0xa00ae27,0x7d079eb1, 0xf00f9344,0x8708a3d2,0x1e01f268,0x6906c2fe,0xf762575d,0X806567CB,0x196c3671,0x6e6b06e7, 0xfed41b76,0X89D32BE0,0x10da7a5a,0X67DD4ACC,0xf9b9df6f,0x8ebeeff9,0x17b7be43,0x60b08ed5, 0xd6d6a3e8,0xa1d1937e,0x38d8c2c4,0x4fdff252,0xd1bb67f1,0xa6bc5767,0X3FB506DD,0x48b2364b, 0xd80d2bda,0xaf0a1b4c,0x36034af6,0x41047a60,0XDF60EFC3,0xa867df55,0x316e8eef,0x4669be79, 0xcb61b38c,0xbc66831a,0x256fd2a0,0x5268e236,0xcc0c7795,0xbb0b4703,0x220216b9,0x5505262f, 0xc5ba3bbe,0xb2bd0b28,0x2bb45a92,0x5cb36a04,0xc2d7ffa7,0xb5d0cf31,0x2cd99e8b,0x5bdeae1d, 0x9b64c2b0,0xec63f226,0x756aa39c,0x26d930a,0x9c0906a9,0xeb0e363f,0x72076785,0x5005713, 0x95bf4a82,0xe2b87a14,0x7bb12bae,0xcb61b38,0x92d28e9b,0xe5d5be0d,0x7cdcefb7,0XBDBDF21, 0x86d3d2d4,0xf1d4e242,0x68ddb3f8,0x1fda836e,0X81BE16CD,0xf6b9265b,0x6fb077e1,0x18b74777, 0x88085ae6,0xff0f6a70,0X66063BCA,0x11010b5c,0x8f659eff,0xf862ae69,0x616bffd3,0x166ccf45, 0xa00ae278,0XD70DD2EE,0x4e048354,0x3903b3c2,0xa7672661,0xd06016f7,0x4969474d,0x3e6e77db, 0xaed16a4a,0XD9D65ADC,0x40df0b66,0x37d83bf0,0xa9bcae53,0xdebb9ec5,0x47b2cf7f,0x30b5ffe9, 0xbdbdf21c,0xcabac28a,0x53b39330,0x24b4a3a6,0xbad03605,0xcdd70693,0x54de5729,0X23D967BF, 0xb3667a2e,0xc4614ab8,0X5D681B02,0x2a6f2b94,0xb40bbe37,0xc30c8ea1,0X5A05DF1B,0x2d02ef8d,}; PrivateCRC32 () {} Public Static intGETCRC32 (stringmsg) {            byte[] bytes = System.Text.Encoding.Default.GetBytes (msg);//solve the problem of Chinese            intICount =bytes.            Length; UInt32 CRC=0xFFFFFFFF;  for(inti =0; i < ICount; i++) {CRC= (CRC >>8) &0x00ffffff^ crctable[(CRC ^ Bytes[i]) &0xFF]; } UInt32 Temp= CRC ^0xFFFFFFFF; intT = (int) temp; return(t); }    }}

(GO) C # CRC32