B4X

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. B4X

Dim success As Boolean = False

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

Dim crypt As ChilkatCrypt2
crypt.Initialize("crypt")
crypt.VerboseLogging = True

Dim cert As ChilkatCert
cert.Initialize("cert")
'  Use your smart card user PIN for signing.
cert.SmartCardPin = "0000"

success = cert.LoadFromSmartcard("")
If success = False Then
    Log(cert.LastErrorText)
    Return
End If


success = crypt.SetSigningCert(cert)
If success = False Then
    Log(crypt.LastErrorText)
    Return
End If


'  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"

Dim signedAttrs As ChilkatJsonObject
signedAttrs.Initialize
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>

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

'  Create the CAdES-BES attached signature, which contains the original data.
success = crypt.CreateP7M(inputXmlPath, outputP7mPath)
If success = False Then
    Log(crypt.LastErrorText)
    Return
End If


Log("Success.")