C++

Create Egypt ITIDA CAdES-BES .p7s Signature (with strings in-memory)

See more Egypt ITIDA Examples

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

Note: This example requires Chilkat v9.5.0.75 or greater.

C++

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

void ChilkatSample(void)
    {
    bool success = false;

    //  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..
    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;
    //  Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used.
    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.
    const char *textToSign = "\"issuer\"\"address\"\"branchID\"\"0\"\"country\"\"EG\"\"regionCity...";

    crypt.put_EncodingMode("base64");
    const char *sigBase64 = crypt.signStringENC(textToSign);
    if (crypt.get_LastMethodSuccess() == false) {
        std::cout << crypt.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "Base64 signature:" << "\r\n";
    std::cout << sigBase64 << "\r\n";
    }