【分享】CRC32算法

阿杰 · 发表于 2009-5-19 22:25:52

//C版
//阿杰整理于:2009年5月19日22:47:03 #include <stdio.h> #include <string.h> unsigned int crcTable[256] = {  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, };
unsigned int getcrc(char *c, int len) {  register unsigned int crc;  char *e = c + len;    crc = 0xFFFFFFFF;  while (c < e) {   crc = ((crc >> 8) & 0x00FFFFFF) ^ crcTable[ (crc^ *c) & 0xFF ];   ++c;  }  return( crc^0xFFFFFFFF ); }
void main() {  char * object_rdn = "101:XNBSC7:XN604";  printf("%i\n", getcrc("测试文本", strlen(object_rdn))); }

c#版本的

using System; using System.IO; using System.Security; using System.Security.Cryptography; using System.Runtime.InteropServices; using System.Text;
namespace KernelCore.Utility.Encrypt {     /// <summary>     /// CRC 效验     /// 快速检测算法     /// </summary>     public sealed class CRC32     {
        static UInt32[] 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, };         private CRC32()         {
        }         public static int GetCRC32(string msg)         {             byte[] bytes = System.Text.Encoding.Default.GetBytes(msg);//解决中文的问题             int iCount = bytes.Length;             UInt32 crc = 0xFFFFFFFF;             for (int i = 0; i < iCount; i++)             {                 crc = ((crc >> 8) & 0x00FFFFFF) ^ crcTable[(crc ^ bytes) & 0xFF];             }             UInt32 temp = crc ^ 0xFFFFFFFF;             int t = (int)temp;             return (t);         }     } }
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【分享】CRC32算法

 

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everyone · 发表于 2009-5-20 06:56:22

哈！一会儿发个fb的上来

everyone · 发表于 2009-5-20 08:47:15

Dim Shared As UInteger crcTable(0 To 255) =>{&H0, &H77073096, &Hee0e612c, &H990951ba, &H76dc419, &H706af48f, &He963a535, &H9e6495a3, _    &Hedb8832, &H79dcb8a4, &He0d5e91e, &H97d2d988, &H9b64c2b, &H7eb17cbd, &He7b82d07, &H90bf1d91, _   &H1db71064, &H6ab020f2, &Hf3b97148, &H84be41de, &H1adad47d, &H6ddde4eb, &Hf4d4b551, &H83d385c7, _   &H136c9856, &H646ba8c0, &Hfd62f97a, &H8a65c9ec, &H14015c4f, &H63066cd9, &Hfa0f3d63, &H8d080df5, _   &H3b6e20c8, &H4c69105e, &Hd56041e4, &Ha2677172, &H3c03e4d1, &H4b04d447, &Hd20d85fd, &Ha50ab56b, _   &H35b5a8fa, &H42b2986c, &Hdbbbc9d6, &Hacbcf940, &H32d86ce3, &H45df5c75, &Hdcd60dcf, &Habd13d59, _   &H26d930ac, &H51de003a, &Hc8d75180, &Hbfd06116, &H21b4f4b5, &H56b3c423, &Hcfba9599, &Hb8bda50f, _   &H2802b89e, &H5f058808, &Hc60cd9b2, &Hb10be924, &H2f6f7c87, &H58684c11, &Hc1611dab, &Hb6662d3d, _   &H76dc4190, &H1db7106, &H98d220bc, &Hefd5102a, &H71b18589, &H6b6b51f, &H9fbfe4a5, &He8b8d433, _   &H7807c9a2, &Hf00f934, &H9609a88e, &He10e9818, &H7f6a0dbb, &H86d3d2d, &H91646c97, &He6635c01, _   &H6b6b51f4, &H1c6c6162, &H856530d8, &Hf262004e, &H6c0695ed, &H1b01a57b, &H8208f4c1, &Hf50fc457, _   &H65b0d9c6, &H12b7e950, &H8bbeb8ea, &Hfcb9887c, &H62dd1ddf, &H15da2d49, &H8cd37cf3, &Hfbd44c65, _   &H4db26158, &H3ab551ce, &Ha3bc0074, &Hd4bb30e2, &H4adfa541, &H3dd895d7, &Ha4d1c46d, &Hd3d6f4fb, _   &H4369e96a, &H346ed9fc, &Had678846, &Hda60b8d0, &H44042d73, &H33031de5, &Haa0a4c5f, &Hdd0d7cc9, _   &H5005713c, &H270241aa, &Hbe0b1010, &Hc90c2086, &H5768b525, &H206f85b3, &Hb966d409, &Hce61e49f, _   &H5edef90e, &H29d9c998, &Hb0d09822, &Hc7d7a8b4, &H59b33d17, &H2eb40d81, &Hb7bd5c3b, &Hc0ba6cad, _   &Hedb88320, &H9abfb3b6, &H3b6e20c, &H74b1d29a, &Head54739, &H9dd277af, &H4db2615, &H73dc1683, _   &He3630b12, &H94643b84, &Hd6d6a3e, &H7a6a5aa8, &He40ecf0b, &H9309ff9d, &Ha00ae27, &H7d079eb1, _   &Hf00f9344, &H8708a3d2, &H1e01f268, &H6906c2fe, &Hf762575d, &H806567cb, &H196c3671, &H6e6b06e7, _   &Hfed41b76, &H89d32be0, &H10da7a5a, &H67dd4acc, &Hf9b9df6f, &H8ebeeff9, &H17b7be43, &H60b08ed5, _   &Hd6d6a3e8, &Ha1d1937e, &H38d8c2c4, &H4fdff252, &Hd1bb67f1, &Ha6bc5767, &H3fb506dd, &H48b2364b, _   &Hd80d2bda, &Haf0a1b4c, &H36034af6, &H41047a60, &Hdf60efc3, &Ha867df55, &H316e8eef, &H4669be79, _   &Hcb61b38c, &Hbc66831a, &H256fd2a0, &H5268e236, &Hcc0c7795, &Hbb0b4703, &H220216b9, &H5505262f, _   &Hc5ba3bbe, &Hb2bd0b28, &H2bb45a92, &H5cb36a04, &Hc2d7ffa7, &Hb5d0cf31, &H2cd99e8b, &H5bdeae1d, _   &H9b64c2b0, &Hec63f226, &H756aa39c, &H26d930a, &H9c0906a9, &Heb0e363f, &H72076785, &H5005713, _   &H95bf4a82, &He2b87a14, &H7bb12bae, &Hcb61b38, &H92d28e9b, &He5d5be0d, &H7cdcefb7, &Hbdbdf21, _   &H86d3d2d4, &Hf1d4e242, &H68ddb3f8, &H1fda836e, &H81be16cd, &Hf6b9265b, &H6fb077e1, &H18b74777, _   &H88085ae6, &Hff0f6a70, &H66063bca, &H11010b5c, &H8f659eff, &Hf862ae69, &H616bffd3, &H166ccf45, _   &Ha00ae278, &Hd70dd2ee, &H4e048354, &H3903b3c2, &Ha7672661, &Hd06016f7, &H4969474d, &H3e6e77db, _   &Haed16a4a, &Hd9d65adc, &H40df0b66, &H37d83bf0, &Ha9bcae53, &Hdebb9ec5, &H47b2cf7f, &H30b5ffe9, _   &Hbdbdf21c, &Hcabac28a, &H53b39330, &H24b4a3a6, &Hbad03605, &Hcdd70693, &H54de5729, &H23d967bf, _   &Hb3667a2e, &Hc4614ab8, &H5d681b02, &H2a6f2b94, &Hb40bbe37, &Hc30c8ea1, &H5a05df1b, &H2d02ef8d} Extern "windows-ms" Function  getcrc(ByVal c As Byte ptr, ByVal Length As Integer) As UInteger export  Dim As UInteger crc 'FB里好像也可以可以用寄存器变量的(因为GCC好像是可以的)，我暂时还没找到相关的关键字，所以就不用了  Dim As Byte Ptr e= c + Length    crc = &HFFFFFFFF  while (c < e)   crc = ((crc Shr 8) And &H00FFFFFF) Xor crcTable((crc xor *c) And &HFF)   c+=1  Wend  Return ( crc Xor &HFFFFFFFF ) End Function End Extern '使用Extern.....End Extern的目的是使编译后的EXE可以作为DLL一样使用

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[算法] 【分享】CRC32算法

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