C

SHA256 Hash the Bytes Represented in a Hex String

Demonstrates how to compute the SHA256 hash of the bytes represented by a hexidecimal encoded string, and return the hash bytes as an hex encoded string. C

#include <C_CkBinData.h>
#include <C_CkCrypt2.h>

void ChilkatSample(void)
    {
    BOOL success;
    const char *src;
    HCkBinData bd;
    HCkCrypt2 crypt;
    const char *result;

    success = FALSE;

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

    //  We wish to compute the SHA256 hash of the bytes 0x6C 0xF8 0xEA 0x51 0xE4 0xE0 0xF5 0x99 0xCF ...
    src = "6CF8EA51E4E0F599CF03EC8D58C3DCBC9C889A77FB2816B40DE25C2EC54E98A67EA517B";

    bd = CkBinData_Create();
    success = CkBinData_AppendEncoded(bd,src,"hex");

    //  The bd now contains the bytes 0x6C 0xF8 0xEA 0x51 0xE4 0xE0 0xF5 0x99 0xCF ...

    crypt = CkCrypt2_Create();
    CkCrypt2_putHashAlgorithm(crypt,"sha256");
    CkCrypt2_putEncodingMode(crypt,"hex");

    //  Hash the bytes contained in bd, and return the 32-byte SHA256 hash as a hexidecimal encoded string.
    result = CkCrypt2_hashBdENC(crypt,bd);
    printf("%s\n",result);


    CkBinData_Dispose(bd);
    CkCrypt2_Dispose(crypt);

    }