(C++) Workaround for the deprecated Crypt2.OpaqueSignString method

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

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

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#include <CkCrypt2.h>
#include <CkCert.h>
#include <CkByteData.h>
#include <CkBinData.h>

void ChilkatSample(void)
    {
    CkCrypt2 crypt;

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

    // Sign the utf-8 byte representation of the text.
    crypt.put_Charset("utf-8");

    const char *textToSign = "This is the text to sign";

    // ------------------------------------------------------------------------
    // The OpaqueSignString method is deprecated:

    CkByteData outData;

    success = crypt.OpaqueSignString(textToSign,outData);

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

    crypt.put_EncodingMode("base64");
    const char *base64_sig = crypt.opaqueSignStringENC(textToSign);

    CkBinData bd;
    bd.AppendEncoded(base64_sig,"base64");

    // Access the raw bytes from bd.
    }