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C

Italian FatturaPA (e-Invoice) Signed XML (CADES-BES P7M) using USB SmartCard Reader

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Demonstrates Italian e-Invoice (FatturaPA) signing by using a private key stored on a USB smartcard reader.

Chilkat C Downloads

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

void ChilkatSample(void)
    {
    BOOL success;
    HCkCrypt2 crypt;
    HCkCert cert;
    HCkJsonObject signedAttrs;
    const char *inputXmlPath;
    const char *outputP7mPath;

    success = FALSE;

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

    crypt = CkCrypt2_Create();
    CkCrypt2_putVerboseLogging(crypt,TRUE);

    cert = CkCert_Create();
    // Use your smart card user PIN for signing.
    CkCert_putSmartCardPin(cert,"0000");

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

    success = CkCrypt2_SetSigningCert(crypt,cert);
    if (success == FALSE) {
        printf("%s\n",CkCrypt2_lastErrorText(crypt));
        CkCrypt2_Dispose(crypt);
        CkCert_Dispose(cert);
        return;
    }

    // The CadesEnabled property applies to all methods that create PKCS7 signatures. 
    // To create a CAdES-BES signature, set this property equal to true.
    CkCrypt2_putCadesEnabled(crypt,TRUE);

    CkCrypt2_putHashAlgorithm(crypt,"sha256");

    signedAttrs = CkJsonObject_Create();
    CkJsonObject_UpdateInt(signedAttrs,"contentType",1);
    CkJsonObject_UpdateInt(signedAttrs,"signingTime",1);
    CkJsonObject_UpdateInt(signedAttrs,"messageDigest",1);
    CkJsonObject_UpdateInt(signedAttrs,"signingCertificateV2",1);
    CkCrypt2_putSigningAttributes(crypt,CkJsonObject_emit(signedAttrs));

    // Load XML such as the following:
    //  <p:FatturaElettronica xmlns:p="http://ivaservizi.agenziaentrate.gov.it/docs/xsd/fatture/v1.2" versione="FPR12">
    //     <FatturaElettronicaHeader>
    //        <DatiTrasmissione>
    // 	...
    //        </DatiTrasmissione>
    //        <CedentePrestatore>
    // 	...
    //        </CedentePrestatore>
    //        <CessionarioCommittente>
    // 	...
    //        </CessionarioCommittente>
    //     </FatturaElettronicaHeader>
    //     <FatturaElettronicaBody>
    //        <DatiGenerali>
    //           <DatiGeneraliDocumento>
    // 		...
    //           </DatiGeneraliDocumento>
    //        </DatiGenerali>
    //        <DatiBeniServizi>
    // 	...
    //        </DatiBeniServizi>
    //     </FatturaElettronicaBody>
    //  </p:FatturaElettronica>

    inputXmlPath = "c:/someDir/e-Invoice.xml";
    outputP7mPath = "c:/someDir/signed.p7m";

    // Create the CAdES-BES attached signature, which contains the original data.
    success = CkCrypt2_CreateP7M(crypt,inputXmlPath,outputP7mPath);
    if (success == FALSE) {
        printf("%s\n",CkCrypt2_lastErrorText(crypt));
        CkCrypt2_Dispose(crypt);
        CkCert_Dispose(cert);
        CkJsonObject_Dispose(signedAttrs);
        return;
    }

    printf("Success.\n");


    CkCrypt2_Dispose(crypt);
    CkCert_Dispose(cert);
    CkJsonObject_Dispose(signedAttrs);

    }