Unicode C

Create CAdES-BES .p7m using Smart Card or USB Token

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Demonstrates how to create a CAdES BES invoice.xml.p7m using a certificate stored on a smart card or USB token.

Note: This example requires Chilkat v9.5.0.77 and at the time of this writing is restricted to the Windows operating system.

Unicode C

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

void ChilkatSample(void)
    {
    BOOL success;
    HCkCrypt2W crypt;
    HCkCertW cert;
    HCkJsonObjectW jsonSignedAttrs;
    const wchar_t *inFile;
    const wchar_t *sigFile;

    success = FALSE;

    //  Note: Requires Chilkat v9.5.0.77 or greater.

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

    crypt = CkCrypt2W_Create();

    //  Use a certificate on a smartcard or USB token.
    cert = CkCertW_Create();
    //  Load the certificate on the smartcard currently in the reader (or on the USB token).
    //  Pass an empty string to allow Chilkat to automatically choose the CSP (Cryptographi Service Provider).
    //  See Load Certificate on Smartcard for information about explicitly selecting a particular CSP.
    success = CkCertW_LoadFromSmartcard(cert,L"");
    if (success != TRUE) {
        wprintf(L"%s\n",CkCertW_lastErrorText(cert));
        CkCrypt2W_Dispose(crypt);
        CkCertW_Dispose(cert);
        return;
    }

    //  Provide the smartcard PIN.
    //  If the PIN is not explicitly provided here, the Windows OS should
    //  display a dialog for the PIN.
    CkCertW_putSmartCardPin(cert,L"000000");

    //  Provide the certificate for signing.
    success = CkCrypt2W_SetSigningCert(crypt,cert);
    if (success != TRUE) {
        wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt));
        CkCrypt2W_Dispose(crypt);
        CkCertW_Dispose(cert);
        return;
    }

    //  Indicate that SHA-256 should be used.
    CkCrypt2W_putHashAlgorithm(crypt,L"sha256");

    //  Specify the signed attributes to be included.
    //  (This is what makes it CAdES-BES compliant.)
    jsonSignedAttrs = CkJsonObjectW_Create();
    CkJsonObjectW_UpdateInt(jsonSignedAttrs,L"contentType",1);
    CkJsonObjectW_UpdateInt(jsonSignedAttrs,L"signingTime",1);
    CkJsonObjectW_UpdateInt(jsonSignedAttrs,L"messageDigest",1);
    CkJsonObjectW_UpdateInt(jsonSignedAttrs,L"signingCertificateV2",1);
    CkCrypt2W_putSigningAttributes(crypt,CkJsonObjectW_emit(jsonSignedAttrs));

    inFile = L"qa_data/xml/IT01234567890_11002.xml";
    sigFile = L"qa_output/IT01234567890_11002.xml.p7m";

    //  Create the CAdES-BES signature, which contains the original data.
    success = CkCrypt2W_CreateP7M(crypt,inFile,sigFile);
    if (success == FALSE) {
        wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt));
        CkCrypt2W_Dispose(crypt);
        CkCertW_Dispose(cert);
        CkJsonObjectW_Dispose(jsonSignedAttrs);
        return;
    }

    wprintf(L"Success.\n");


    CkCrypt2W_Dispose(crypt);
    CkCertW_Dispose(cert);
    CkJsonObjectW_Dispose(jsonSignedAttrs);

    }