Calculate MD5 Hash of File (or SHA-1, and other hash algorithms)

Demonstrates how to calculate a hash for a file's contents.

Downloads:

MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

#include <C_CkCrypt2.h>

void ChilkatSample(void)
    {
    HCkCrypt2 crypt;
    BOOL success;
    const char * hashStr;

    crypt = CkCrypt2_Create();

    success = CkCrypt2_UnlockComponent(crypt,"Anything for 30-day trial");
    if (success != TRUE) {
        printf("%s\n",CkCrypt2_lastErrorText(crypt));
        return;
    }

    //  Set the name of the hash algorithm.
    //  Other choices include "sha1", "sha384", "sha512", "md2", "md5", and "haval".
    CkCrypt2_putHashAlgorithm(crypt,"md5");

    //  EncodingMode specifies the encoding of the hash output.
    //  It may be "hex", "url", "base64", or "quoted-printable".
    CkCrypt2_putEncodingMode(crypt,"hex");

    //  Files of any type may be hashed -- it doesn't matter
    //  if the file is binary or text...

    hashStr = CkCrypt2_hashFileENC(crypt,"/temp/something.dat");
    if (hashStr == 0 ) {
        printf("%s\n",CkCrypt2_lastErrorText(crypt));
        return;
    }

    printf("%s\n",hashStr);

    CkCrypt2_Dispose(crypt);

    }