(C) Workaround for the deprecated Crypt2.MacBytes method

Shows how to replace the deprecated MacBytes method. (Chilkat is moving away from the use of CkByteData.)

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat C/C++ Library Downloads
MS Visual C/C++ C++ Builder Linux C/C++ Alpine Linux C/C++	MacOS C/C++ iOS C/C++ Android C/C++ MinGW C/C++

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

void ChilkatSample(void)
    {
    HCkCrypt2 crypt;
    const char *keyHex;
    BOOL success;
    const char *path;
    HCkByteData inData;
    HCkByteData outData;
    HCkBinData bdIn;
    const char *mac_base64;

    crypt = CkCrypt2_Create();

    // Do HMAC using SHA-256.
    CkCrypt2_putMacAlgorithm(crypt,"hmac");
    CkCrypt2_putHashAlgorithm(crypt,"sha256");

    keyHex = "000102030405060708090A0B0C0D0E0F";
    success = CkCrypt2_SetMacKeyEncoded(crypt,keyHex,"hex");

    path = "c:/someDir/example.dat";

    // ------------------------------------------------------------------------
    // The MacBytes method is deprecated:

    inData = CkByteData_Create();
    CkByteData_loadFile(inData,path);

    outData = CkByteData_Create();

    success = CkCrypt2_MacBytes(crypt,inData,outData);

    // ------------------------------------------------------------------------
    // Workaround.
    // (Chilkat is moving away from using CkByteData)

    bdIn = CkBinData_Create();
    CkBinData_LoadFile(bdIn,path);

    // Set to any supported Chilkat encoding: base64, hex, base64url, hex_lower, etc.
    CkCrypt2_putEncodingMode(crypt,"base64");
    mac_base64 = CkCrypt2_macBdENC(crypt,bdIn);


    CkCrypt2_Dispose(crypt);
    CkByteData_Dispose(inData);
    CkByteData_Dispose(outData);
    CkBinData_Dispose(bdIn);

    }