C

Workaround for the deprecated Crypt2.OpaqueSignBytesENC method

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

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

void ChilkatSample(void)
    {
    BOOL success;
    HCkCrypt2 crypt;
    HCkCert cert;
    const char *path;
    HCkByteData inData;
    const char *base64_sig;
    HCkBinData bd;

    success = FALSE;

    crypt = CkCrypt2_Create();

    cert = CkCert_Create();
    //  ...
    //  Load the cert from a source such as a .pfx/.p12 file, smart card, USB token, Apple keychain, Windows certificate store, etc.
    //  
    success = CkCrypt2_SetSigningCert(crypt,cert);

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

    //  ------------------------------------------------------------------------
    //  The OpaqueSignBytesENC method is deprecated:

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

    CkCrypt2_putEncodingMode(crypt,"base64");
    base64_sig = CkCrypt2_opaqueSignBytesENC(crypt,inData);

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

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

    //  The contents of bd are replaced with the opaque signature.
    success = CkCrypt2_OpaqueSignBd(crypt,bd);

    base64_sig = CkBinData_getEncoded(bd,"base64");


    CkCrypt2_Dispose(crypt);
    CkCert_Dispose(cert);
    CkByteData_Dispose(inData);
    CkBinData_Dispose(bd);

    }