Получить хеш файла (CRC32, MD5, SHA1, TTH, ED2K, BitPrint, AICH....)

#include <stdlib.h>
#include <stdio.h>
 
unsigned int crc_table[] = 
{
    0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F,
    0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
    0x09B64C2B, 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, 0x01DB7106,
    0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
    0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D,
    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, 0x03B6E20C, 0x74B1D29A,
    0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84,
    0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 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, 0x026D930A, 0x9C0906A9, 0xEB0E363F,
    0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
    0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 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
};
 
int main(int argc, char *argv[])
{
    int i = 0;
    
    FILE *pfile = NULL;
    size_t nbytes = 0;
    
    unsigned char buffer[BUFSIZ];
    unsigned int crc = 0xFFFFFFFF;
    
    if(argc < 2) {
        fprintf(stderr, "Usage: %s <in_file>\n", argv[0]);
        exit(1);
    }
    
    if((pfile = fopen(argv[1], "rb")) == NULL) {
        fprintf(stderr, "%s: can't open file %s\n", argv[0], argv[1]);
        exit(1);
    }
          
    while((nbytes = fread(buffer, 1, BUFSIZ, pfile)) > 0) {
        for(i = 0; i < nbytes; ++i)
            crc = crc_table[(crc ^ (unsigned char)buffer[i]) & 0xff] ^ (crc >> 8);
    }
    
    if(ferror(pfile)) {
        fprintf(stderr, "%s: can't read from file %s\n", argv[0], argv[1]);
        fclose(pfile);
        exit(1);
    }
    
    fclose(pfile);   
    
    crc ^= 0xffffffff;
    printf("%#.8X\n", crc); 
    
    return 0;
}

unsigned int check = 0x12345678; // число для записи
FILE *pfile = NULL; // указатель на файл, в который производится записьа
 
fwrite(&check, sizeof(check), 1, pfile);
fprintf(pfile, "%x", check);

#include "stdafx.h"
#include <tchar.h>
#include <shlwapi.h>
#include "md5.h"
 
TCHAR  m_lpszBuffer[64];
ULONG m_nCount[2];
ULONG m_lMD5[4];
 
static TCHAR PADDING[64] = {
 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
 
#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
#define H(x, y, z) ((x) ^ (y) ^ (z))
#define I(x, y, z) ((y) ^ ((x) | (~z)))
 
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
 
#define FF(a, b, c, d, x, s, ac) \
 {(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
  (a) = ROTATE_LEFT ((a), (s)); \
  (a) += (b); \
 }
#define GG(a, b, c, d, x, s, ac) \
 {(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
  (a) = ROTATE_LEFT ((a), (s)); \
  (a) += (b); \
 }
#define HH(a, b, c, d, x, s, ac) \
 {(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
  (a) = ROTATE_LEFT ((a), (s)); \
  (a) += (b); \
 }
#define II(a, b, c, d, x, s, ac) \
 {(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
  (a) = ROTATE_LEFT ((a), (s)); \
  (a) += (b); \
 }
 
void ByteToDWord(DWORD* Output, ULONG* Input, UINT nLength){
UINT i=0;
UINT j=0;
for (; j < nLength; i++, j += 4)
{
 Output[i] = (ULONG)Input[j]   | 
    (ULONG)Input[j+1] << 8 | 
    (ULONG)Input[j+2] << 16 | 
    (ULONG)Input[j+3] << 24;
}
}
 
void DWordToByte(TCHAR* Output, DWORD* Input, UINT nLength ){
UINT i = 0;
UINT j = 0;
for (; j < nLength; i++, j += 4) 
{
 Output[j] =   (UCHAR)(Input[i] & 0xff);
 Output[j+1] = (UCHAR)((Input[i] >> 8) & 0xff);
 Output[j+2] = (UCHAR)((Input[i] >> 16) & 0xff);
 Output[j+3] = (UCHAR)((Input[i] >> 24) & 0xff);
}
}
 
void MD5Init (void)
{
 memset(m_lpszBuffer, 0, 64 );
 m_nCount[0] = m_nCount[1] = 0;
 
m_lMD5[0] = MD5_INIT_STATE_0;
m_lMD5[1] = MD5_INIT_STATE_1;
m_lMD5[2] = MD5_INIT_STATE_2;
m_lMD5[3] = MD5_INIT_STATE_3;
}
 
void MD5Update (TCHAR *inBuf, unsigned int inLen)
{
 register int i, ii;
 int mdi;
 UINT4 in[16];
 
 mdi = (int)((m_nCount[0] >> 3) & 0x3F);
 
 if ((m_nCount[0] + ((UINT4)inLen << 3)) < m_nCount[0])
   m_nCount[1]++;
 m_nCount[0] += ((UINT4)inLen << 3);
 m_nCount[1] += ((UINT4)inLen >> 29);
 
 while (inLen--) {
   m_lpszBuffer[mdi++] = *inBuf++;
 
   if (mdi == 0x40) {
     for (i = 0, ii = 0; i < 16; i++, ii += 4)
       in[i] = (((UINT4)m_lpszBuffer[ii+3]) << 24) |
               (((UINT4)m_lpszBuffer[ii+2]) << 16) |
               (((UINT4)m_lpszBuffer[ii+1]) << 8) |
               ((UINT4)m_lpszBuffer[ii]);
     Transform (m_lMD5, in);
     mdi = 0;
   }
 }
}
 
void MD5Final (TCHAR* cReturnStr)
{
TCHAR bits[8];
int nIndex;
unsigned int nPadLen;
const int nMD5Size = 16;
TCHAR lpszMD5[16];
TCHAR temp[20];
int i;
 
cReturnStr[0]='\0';
 
DWordToByte( bits, m_nCount, 8 );
 
nIndex = (int)((m_nCount[0] >> 3) & 0x3f);
nPadLen = (nIndex < 56) ? (56 - nIndex) : (120 - nIndex);
MD5Update (PADDING, nPadLen);
 
MD5Update (bits, 8);
 
DWordToByte( lpszMD5, m_lMD5, nMD5Size );
 
for (i=0; i < nMD5Size; i++) 
{
 
 if (lpszMD5[i] == 0) {
  temp[0] = '0';
  temp[1]='0';
 }
 else if (lpszMD5[i] <= 15)  {
     _stprintf_s(temp,10,TEXT("0%x"),lpszMD5[i]);
 }
 else {
     _stprintf_s(temp,10,TEXT("%x"),lpszMD5[i]);
 }
   StrCat(cReturnStr,temp);
}
lpszMD5[0]='\0';
}
 
void Transform(register UINT4 *buf,register UINT4 *in)
{
 register UINT4 a = buf[0], b = buf[1], c = buf[2], d = buf[3];
 
#define S11 7
#define S12 12
#define S13 17
#define S14 22
 FF ( a, b, c, d, in[ 0], S11, 0xD76AA478L); 
 FF ( d, a, b, c, in[ 1], S12, 0xE8C7B756L); 
 FF ( c, d, a, b, in[ 2], S13, 0x242070DBL); 
 FF ( b, c, d, a, in[ 3], S14, 0xC1BDCEEEL); 
 FF ( a, b, c, d, in[ 4], S11, 0xF57C0FAFL); 
 FF ( d, a, b, c, in[ 5], S12, 0x4787C62AL); 
 FF ( c, d, a, b, in[ 6], S13, 0xA8304613L); 
 FF ( b, c, d, a, in[ 7], S14, 0xFD469501L); 
 FF ( a, b, c, d, in[ 8], S11, 0x698098D8L); 
 FF ( d, a, b, c, in[ 9], S12, 0x8B44F7AFL); 
 FF ( c, d, a, b, in[10], S13, 0xFFFF5BB1L); 
 FF ( b, c, d, a, in[11], S14, 0x895CD7BEL); 
 FF ( a, b, c, d, in[12], S11, 0x6B901122L); 
 FF ( d, a, b, c, in[13], S12, 0xFD987193L); 
 FF ( c, d, a, b, in[14], S13, 0xA679438EL); 
 FF ( b, c, d, a, in[15], S14, 0x49B40821L); 
 
#define S21 5
#define S22 9
#define S23 14
#define S24 20
 GG ( a, b, c, d, in[ 1], S21, 0xF61E2562L); 
 GG ( d, a, b, c, in[ 6], S22, 0xC040B340L); 
 GG ( c, d, a, b, in[11], S23, 0x265E5A51L); 
 GG ( b, c, d, a, in[ 0], S24, 0xE9B6C7AAL); 
 GG ( a, b, c, d, in[ 5], S21, 0xD62F105DL); 
 GG ( d, a, b, c, in[10], S22, 0x02441453L); 
 GG ( c, d, a, b, in[15], S23, 0xD8A1E681L); 
 GG ( b, c, d, a, in[ 4], S24, 0xE7D3FBC8L); 
 GG ( a, b, c, d, in[ 9], S21, 0x21E1CDE6L); 
 GG ( d, a, b, c, in[14], S22, 0xC33707D6L); 
 GG ( c, d, a, b, in[ 3], S23, 0xF4D50D87L); 
 GG ( b, c, d, a, in[ 8], S24, 0x455A14EDL); 
 GG ( a, b, c, d, in[13], S21, 0xA9E3E905L); 
 GG ( d, a, b, c, in[ 2], S22, 0xFCEFA3F8L); 
 GG ( c, d, a, b, in[ 7], S23, 0x676F02D9L); 
 GG ( b, c, d, a, in[12], S24, 0x8D2A4C8AL); 
 
#define S31 4
#define S32 11
#define S33 16
#define S34 23
 HH ( a, b, c, d, in[ 5], S31, 0xFFFA3942L); 
 HH ( d, a, b, c, in[ 8], S32, 0x8771F681L); 
 HH ( c, d, a, b, in[11], S33, 0x6D9D6122L); 
 HH ( b, c, d, a, in[14], S34, 0xFDE5380CL); 
 HH ( a, b, c, d, in[ 1], S31, 0xA4BEEA44L);
 HH ( d, a, b, c, in[ 4], S32, 0x4BDECFA9L); 
 HH ( c, d, a, b, in[ 7], S33, 0xF6BB4B60L); 
 HH ( b, c, d, a, in[10], S34, 0xBEBFBC70L); 
 HH ( a, b, c, d, in[13], S31, 0x289B7EC6L); 
 HH ( d, a, b, c, in[ 0], S32, 0xEAA127FAL); 
 HH ( c, d, a, b, in[ 3], S33, 0xD4EF3085L); 
 HH ( b, c, d, a, in[ 6], S34, 0x04881D05L);
 HH ( a, b, c, d, in[ 9], S31, 0xD9D4D039L); 
 HH ( d, a, b, c, in[12], S32, 0xE6DB99E5L); 
 HH ( c, d, a, b, in[15], S33, 0x1FA27CF8L); 
 HH ( b, c, d, a, in[ 2], S34, 0xC4AC5665L); 
 
#define S41 6
#define S42 10
#define S43 15
#define S44 21
 II ( a, b, c, d, in[ 0], S41, 0xF4292244L); 
 II ( d, a, b, c, in[ 7], S42, 0x432AFF97L); 
 II ( c, d, a, b, in[14], S43, 0xAB9423A7L); 
 II ( b, c, d, a, in[ 5], S44, 0xFC93A039L); 
 II ( a, b, c, d, in[12], S41, 0x655B59C3L); 
 II ( d, a, b, c, in[ 3], S42, 0x8F0CCC92L); 
 II ( c, d, a, b, in[10], S43, 0xFFEFF47DL); 
 II ( b, c, d, a, in[ 1], S44, 0x85845DD1L); 
 II ( a, b, c, d, in[ 8], S41, 0x6FA87E4FL); 
 II ( d, a, b, c, in[15], S42, 0xFE2CE6E0L); 
 II ( c, d, a, b, in[ 6], S43, 0xA3014314L); 
 II ( b, c, d, a, in[13], S44, 0x4E0811A1L); 
 II ( a, b, c, d, in[ 4], S41, 0xF7537E82L); 
 II ( d, a, b, c, in[11], S42, 0xBD3AF235L); 
 II ( c, d, a, b, in[ 2], S43, 0x2AD7D2BBL); 
 II ( b, c, d, a, in[ 9], S44, 0xEB86D391L); 
 
 buf[0] += a;
 buf[1] += b;
 buf[2] += c;
 buf[3] += d;
}
 
void GetMD5(TCHAR* pBuf, UINT nLength,TCHAR* cReturnStr) {
    MD5Init();
    MD5Update(pBuf, nLength);
    MD5Final(cReturnStr);
    }