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

See more Egypt ITIDA Examples

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

Chilkat C/C++ Library Downloads
MS Visual C/C++ Linux/CentOS C/C++ Alpine Linux C/C++ MAC OS X C/C++	armhf/aarch64 C/C++ C++ Builder iOS C/C++ Android C/C++	Solaris C/C++ MinGW C/C++

#include <C_CkCrypt2.h>
#include <C_CkCert.h>
#include <C_CkJsonObject.h>

void ChilkatSample(void)
    {
    HCkCrypt2 crypt;
    HCkCert cert;
    BOOL success;
    HCkJsonObject cmsOptions;
    HCkJsonObject jsonSigningAttrs;
    const char *pathOfFileToSign;
    const char *outputPath;

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

    crypt = CkCrypt2_Create();

    cert = CkCert_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 = CkCert_LoadFromSmartcard(cert,"");
    if (success != TRUE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkCrypt2_Dispose(crypt);
        CkCert_Dispose(cert);
        return;
    }

    // Tell the crypt component to use this cert.
    success = CkCrypt2_SetSigningCert(crypt,cert);
    if (success != TRUE) {
        printf("%s\n",CkCrypt2_lastErrorText(crypt));
        CkCrypt2_Dispose(crypt);
        CkCert_Dispose(cert);
        return;
    }

    cmsOptions = CkJsonObject_Create();
    CkJsonObject_UpdateBool(cmsOptions,"DigestData",TRUE);
    CkJsonObject_UpdateBool(cmsOptions,"OmitAlgorithmIdNull",TRUE);
    CkCrypt2_putCmsOptions(crypt,CkJsonObject_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. 
    CkCrypt2_putCadesEnabled(crypt,TRUE);

    CkCrypt2_putHashAlgorithm(crypt,"sha256");

    jsonSigningAttrs = CkJsonObject_Create();
    CkJsonObject_UpdateInt(jsonSigningAttrs,"contentType",1);
    CkJsonObject_UpdateInt(jsonSigningAttrs,"signingTime",1);
    CkJsonObject_UpdateInt(jsonSigningAttrs,"messageDigest",1);
    CkJsonObject_UpdateInt(jsonSigningAttrs,"signingCertificateV2",1);
    CkCrypt2_putSigningAttributes(crypt,CkJsonObject_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:
    CkCrypt2_putIncludeCertChain(crypt,FALSE);

    // Make sure we sign the utf-8 byte representation of the JSON string
    CkCrypt2_putCharset(crypt,"utf-8");

    // Create the CAdES-BES signature, which does not contain the data being signed.
    pathOfFileToSign = "someDir/someFile";
    outputPath = "outDir/someFile.p7s";
    success = CkCrypt2_CreateP7S(crypt,pathOfFileToSign,outputPath);
    if (success != TRUE) {
        printf("%s\n",CkCrypt2_lastErrorText(crypt));
        CkCrypt2_Dispose(crypt);
        CkCert_Dispose(cert);
        CkJsonObject_Dispose(cmsOptions);
        CkJsonObject_Dispose(jsonSigningAttrs);
        return;
    }

    printf("Success!\n");


    CkCrypt2_Dispose(crypt);
    CkCert_Dispose(cert);
    CkJsonObject_Dispose(cmsOptions);
    CkJsonObject_Dispose(jsonSigningAttrs);

    }