C

Hash the Contents of a String (SHA256 and other hash algorithms)

See more Encryption Examples

Demonstrates how to hash the contents of a string using SHA256, SHA384, SHA512, MD2, MD5, HAVAL, RIPEMD, etc. C

#include <C_CkCrypt2.h>
#include <C_CkByteData.h>
#include <C_CkStringBuilder.h>

void ChilkatSample(void)
    {
    HCkCrypt2 crypt;
    HCkByteData hashBytes;
    HCkStringBuilder sb;

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    crypt = CkCrypt2_Create();

    //  Choose the hash algorithm.
    //  Can be  "sha1", "sha256", "sha384", "sha512", "md2", "md5", "haval", "ripemd128", "ripemd160","ripemd256", or "ripemd320".
    CkCrypt2_putHashAlgorithm(crypt,"sha256");

    //  The byte representation of the string matters when hashing. 
    //  Tell Chilkat that we want to use the utf-8 byte representation.
    CkCrypt2_putCharset(crypt,"utf-8");

    hashBytes = CkByteData_Create();
    success = CkCrypt2_HashString(crypt,"They who can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.",hashBytes);

    //  Let's examine the hash as a hex string.
    sb = CkStringBuilder_Create();
    CkStringBuilder_AppendEncoded(sb,hashBytes,"hex");
    printf("SHA256 hash = %s\n",CkStringBuilder_getAsString(sb));


    CkCrypt2_Dispose(crypt);
    CkByteData_Dispose(hashBytes);
    CkStringBuilder_Dispose(sb);

    }