C#

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

See more CAdES Examples

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

bool success = false;

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

Chilkat.Crypt2 crypt = new Chilkat.Crypt2();
crypt.VerboseLogging = true;

Chilkat.Cert cert = new Chilkat.Cert();
//  Use your smart card user PIN for signing.
cert.SmartCardPin = "0000";

success = cert.LoadFromSmartcard("");
if (success == false) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

success = crypt.SetSigningCert(cert);
if (success == false) {
    Debug.WriteLine(crypt.LastErrorText);
    return;
}

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

crypt.HashAlgorithm = "sha256";

Chilkat.JsonObject signedAttrs = new Chilkat.JsonObject();
signedAttrs.UpdateInt("contentType",1);
signedAttrs.UpdateInt("signingTime",1);
signedAttrs.UpdateInt("messageDigest",1);
signedAttrs.UpdateInt("signingCertificateV2",1);
crypt.SigningAttributes = signedAttrs.Emit();

//  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>

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

//  Create the CAdES-BES attached signature, which contains the original data.
success = crypt.CreateP7M(inputXmlPath,outputP7mPath);
if (success == false) {
    Debug.WriteLine(crypt.LastErrorText);
    return;
}

Debug.WriteLine("Success.");