(Unicode C++) Sign PDF using ARSS (Aruba Remote Signing Service)

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Demonstrates how to sign a PDF using the Aruba Remote Signing Service (ARSS).

Note: This example requires Chilkat v9.5.0.96 or greater.

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#include <CkPdfW.h>
#include <CkJsonObjectW.h>
#include <CkCertW.h>

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

    CkPdfW pdf;

    // Load a PDF to be signed.
    bool success = pdf.LoadFile(L"qa_data/pdf/hello.pdf");
    if (success == false) {
        wprintf(L"%s\n",pdf.lastErrorText());
        return;
    }

    // Options for signing are specified in JSON.
    CkJsonObjectW json;

    // Indicate that we want an LTV-enabled signature
    json.UpdateBool(L"ltvOcsp",true);

    // Define the appearance of the signature.
    json.UpdateInt(L"page",1);
    json.UpdateString(L"appearance.y",L"top");
    json.UpdateString(L"appearance.x",L"left");
    json.UpdateString(L"appearance.fontScale",L"10.0");
    json.UpdateString(L"appearance.text[0]",L"Digitally signed by: cert_cn");
    json.UpdateString(L"appearance.text[1]",L"current_dt");
    json.UpdateString(L"appearance.text[2]",L"This is an LTV-enabled signature.");

    // Load the certificate used for signing.  The certificate's private key is stored on 
    // the Aruba.it server and the signing will happen remotely using the
    // ARSS (Aruba Remote Signing Service).
    // However, we still need the certificate locally (without private key).
    CkCertW cert;
    success = cert.LoadFromFile(L"qa_data/certs/myCert.cer");
    if (success == false) {
        wprintf(L"%s\n",cert.lastErrorText());
        return;
    }

    // To sign using the Aruba Remote Signing Service, 
    // add the following lines of code to specify your authentication credentials,
    // and the ID of the certificate w/ private key on the server to be used.
    CkJsonObjectW jsonArss;

    // Set the "service" equal to "ARSS" to tell Chilkat to use ARSS for signing.
    jsonArss.UpdateString(L"service",L"ARSS");
    // Specify the certificate ID, such as "AS0"
    // This certificate should match the certificate loaded in the above code.
    jsonArss.UpdateString(L"certID",L"YOUR_ARSS_CERT_ID");
    jsonArss.UpdateString(L"otpPwd",L"YOUR_OTP_PWD");
    jsonArss.UpdateString(L"typeOtpAuth",L"demoprod");
    jsonArss.UpdateString(L"user",L"YOUR_ARSS_USERNAME");
    jsonArss.UpdateString(L"userPWD",L"YOUR_ARSS_PASSWORD");
    success = cert.SetCloudSigner(jsonArss);

    // Tell the pdf object to use the certificate for signing.
    success = pdf.SetSigningCert(cert);
    if (success == false) {
        wprintf(L"%s\n",pdf.lastErrorText());
        return;
    }

    // Chilkat will build the signed PDF locally, but will (internally) use ARSS
    // to do the RSA sign hash operation.
    success = pdf.SignPdf(json,L"qa_output/hello_ltv_signed.pdf");
    if (success == false) {
        wprintf(L"%s\n",pdf.lastErrorText());
        return;
    }

    wprintf(L"The PDF has been successfully cryptographically signed with long-term validation.\n");
    }