(Unicode 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 <C_CkCrypt2W.h>
#include <C_CkCertW.h>
#include <C_CkJsonObjectW.h>

void ChilkatSample(void)
    {
    HCkCrypt2W crypt;
    HCkCertW cert;
    BOOL success;
    HCkJsonObjectW cmsOptions;
    HCkJsonObjectW jsonSigningAttrs;
    const wchar_t *pathOfFileToSign;
    const wchar_t *outputPath;

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

    crypt = CkCrypt2W_Create();

    cert = CkCertW_Create();

    // 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 = CkCertW_LoadFromSmartcard(cert,L"");
    if (success != TRUE) {
        wprintf(L"%s\n",CkCertW_lastErrorText(cert));
        CkCrypt2W_Dispose(crypt);
        CkCertW_Dispose(cert);
        return;
    }

    // Tell the crypt component to use this cert.
    success = CkCrypt2W_SetSigningCert(crypt,cert);
    if (success != TRUE) {
        wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt));
        CkCrypt2W_Dispose(crypt);
        CkCertW_Dispose(cert);
        return;
    }

    cmsOptions = CkJsonObjectW_Create();
    CkJsonObjectW_UpdateBool(cmsOptions,L"DigestData",TRUE);
    CkJsonObjectW_UpdateBool(cmsOptions,L"OmitAlgorithmIdNull",TRUE);
    CkCrypt2W_putCmsOptions(crypt,CkJsonObjectW_emit(cmsOptions));

    // The CadesEnabled property applies to all methods that create CMS/PKCS7 signatures. 
    // To create a CAdES-BES signature, set this property equal to true. 
    CkCrypt2W_putCadesEnabled(crypt,TRUE);

    CkCrypt2W_putHashAlgorithm(crypt,L"sha256");

    jsonSigningAttrs = CkJsonObjectW_Create();
    CkJsonObjectW_UpdateInt(jsonSigningAttrs,L"contentType",1);
    CkJsonObjectW_UpdateInt(jsonSigningAttrs,L"signingTime",1);
    CkJsonObjectW_UpdateInt(jsonSigningAttrs,L"messageDigest",1);
    CkJsonObjectW_UpdateInt(jsonSigningAttrs,L"signingCertificateV2",1);
    CkCrypt2W_putSigningAttributes(crypt,CkJsonObjectW_emit(jsonSigningAttrs));

    // 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:
    CkCrypt2W_putIncludeCertChain(crypt,FALSE);

    // Make sure we sign the utf-8 byte representation of the JSON string
    CkCrypt2W_putCharset(crypt,L"utf-8");

    // Create the CAdES-BES signature, which does not contain the data being signed.
    pathOfFileToSign = L"someDir/someFile";
    outputPath = L"outDir/someFile.p7s";
    success = CkCrypt2W_CreateP7S(crypt,pathOfFileToSign,outputPath);
    if (success != TRUE) {
        wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt));
        CkCrypt2W_Dispose(crypt);
        CkCertW_Dispose(cert);
        CkJsonObjectW_Dispose(cmsOptions);
        CkJsonObjectW_Dispose(jsonSigningAttrs);
        return;
    }

    wprintf(L"Success!\n");


    CkCrypt2W_Dispose(crypt);
    CkCertW_Dispose(cert);
    CkJsonObjectW_Dispose(cmsOptions);
    CkJsonObjectW_Dispose(jsonSigningAttrs);

    }