(C++) Create Egypt ITIDA CAdES-BES .p7s Signature (File to File)

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Demonstrates how to create a .p7s signature that fits Egypt's ITIDA requirements.

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#include <CkCrypt2.h>
#include <CkCert.h>
#include <CkJsonObject.h>

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

    CkCrypt2 crypt;

    CkCert cert;

    // There are many ways to load the certificate.  
    // This example was created for a customer using an ePass2003 USB token.
    // Assuming the USB token is the only source of a hardware-based private key..
    bool success = cert.LoadFromSmartcard("");
    if (success != true) {
        std::cout << cert.lastErrorText() << "\r\n";
        return;
    }

    // Tell the crypt component to use this cert.
    success = crypt.SetSigningCert(cert);
    if (success != true) {
        std::cout << crypt.lastErrorText() << "\r\n";
        return;
    }

    CkJsonObject cmsOptions;
    cmsOptions.UpdateBool("DigestData",true);
    cmsOptions.UpdateBool("OmitAlgorithmIdNull",true);
    crypt.put_CmsOptions(cmsOptions.emit());

    // The CadesEnabled property applies to all methods that create CMS/PKCS7 signatures. 
    // To create a CAdES-BES signature, set this property equal to true. 
    crypt.put_CadesEnabled(true);

    crypt.put_HashAlgorithm("sha256");

    CkJsonObject jsonSigningAttrs;
    jsonSigningAttrs.UpdateInt("contentType",1);
    jsonSigningAttrs.UpdateInt("signingTime",1);
    jsonSigningAttrs.UpdateInt("messageDigest",1);
    jsonSigningAttrs.UpdateInt("signingCertificateV2",1);
    crypt.put_SigningAttributes(jsonSigningAttrs.emit());

    // By default, all the certs in the chain of authentication are included in the signature.
    // If desired, we can choose to only include the signing certificate:
    crypt.put_IncludeCertChain(false);

    // Make sure we sign the utf-8 byte representation of the JSON string
    crypt.put_Charset("utf-8");

    // Create the CAdES-BES signature, which does not contain the data being signed.
    const char *pathOfFileToSign = "someDir/someFile";
    const char *outputPath = "outDir/someFile.p7s";
    success = crypt.CreateP7S(pathOfFileToSign,outputPath);
    if (success != true) {
        std::cout << crypt.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "Success!" << "\r\n";
    }