(Swift 3,4,5...) Italian FatturaPA (e-Invoice) Signed XML (CADES-BES P7M) using USB SmartCard Reader

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

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

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

    let crypt = CkoCrypt2()!
    crypt.verboseLogging = true

    let cert = CkoCert()!
    // Use your smart card user PIN for signing.
    cert.smartCardPin = "0000"

    var success: Bool = cert.load(fromSmartcard: "")
    if success == false {
        print("\(cert.lastErrorText!)")
        return
    }

    success = crypt.setSigning(cert)
    if success == false {
        print("\(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"

    let signedAttrs = CkoJsonObject()!
    signedAttrs.updateInt("contentType", value: 1)
    signedAttrs.updateInt("signingTime", value: 1)
    signedAttrs.updateInt("messageDigest", value: 1)
    signedAttrs.updateInt("signingCertificateV2", value: 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>

    var inputXmlPath: String? = "c:/someDir/e-Invoice.xml"
    var outputP7mPath: String? = "c:/someDir/signed.p7m"

    // Create the CAdES-BES attached signature, which contains the original data.
    success = crypt.createP7M(inputXmlPath, p7mPath: outputP7mPath)
    if success == false {
        print("\(crypt.lastErrorText!)")
        return
    }

    print("Success.")

}