(Unicode C++) RSA Sign utf-8 Byte Representation of String

Demontstrates how to sign the utf-8 byte representation of a string.

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

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#include <CkPrivateKeyW.h>
#include <CkRsaW.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    // Load an RSA private key for signing.
    CkPrivateKeyW privKey;
    success = privKey.LoadEncryptedPemFile(L"qa_data/pem/rsa_passwd.pem",L"passwd");
    if (success == false) {
        wprintf(L"%s\n",privKey.lastErrorText());
        return;
    }

    CkRsaW rsa;
    success = rsa.UsePrivateKey(privKey);
    if (success == false) {
        wprintf(L"%s\n",rsa.lastErrorText());
        return;
    }

    const wchar_t *originalData = L"This is the string to be hashed an RSA signed.";

    // Indicate that we want the utf-8 byte representation of the string to be signed
    rsa.put_Charset(L"utf-8");

    // We want the RSA signature in base64 format
    rsa.put_EncodingMode(L"base64");

    const wchar_t *sigBase64 = rsa.signStringENC(originalData,L"sha256");
    wprintf(L"%s\n",sigBase64);
    }