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FatturaPA XML Invoice Sign+Encrypt to P7M

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Demonstrates how to create a CAdES BES signed + encrypted invoice.xml.p7m for the Italian FatturaPA exchange system. AutoIt

Local $bSuccess = False

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

$oCrypt = ObjCreate("Chilkat.Crypt2")

; Use a digital certificate and private key from a PFX file (.pfx or .p12).
Local $sPfxPath = "qa_data/pfx/cert_test123.pfx"
Local $sPfxPassword = "test123"

$oCert = ObjCreate("Chilkat.Cert")
$bSuccess = $oCert.LoadPfxFile($sPfxPath,$sPfxPassword)
If ($bSuccess = False) Then
    ConsoleWrite($oCert.LastErrorText & @CRLF)
    Exit
EndIf

; Provide the signing cert (with associated private key).
$bSuccess = $oCrypt.SetSigningCert($oCert)
If ($bSuccess = False) Then
    ConsoleWrite($oCrypt.LastErrorText & @CRLF)
    Exit
EndIf

; Indicate that SHA-256 should be used.
$oCrypt.HashAlgorithm = "sha256"

; Specify the signed attributes to be included.
; (This is what makes it CAdES-BES compliant.)
$oJsonSignedAttrs = ObjCreate("Chilkat.JsonObject")
$oJsonSignedAttrs.UpdateInt("contentType",1)
$oJsonSignedAttrs.UpdateInt("signingTime",1)
$oJsonSignedAttrs.UpdateInt("messageDigest",1)
$oJsonSignedAttrs.UpdateInt("signingCertificateV2",1)
$oCrypt.SigningAttributes = $oJsonSignedAttrs.Emit()

Local $sInFile = "qa_data/xml/IT01234567890_11002.xml"
Local $sigFile = "qa_data/fatturapa/signed.p7m"

; Create the CAdES-BES signature, which contains the original data.
$bSuccess = $oCrypt.CreateP7M($sInFile,$sigFile)
If ($bSuccess = False) Then
    ConsoleWrite($oCrypt.LastErrorText & @CRLF)
    Exit
EndIf

; Now we'll encrypt what was signed using FatturaPA's certificate (from a PEM file)
$oEncryptCert = ObjCreate("Chilkat.Cert")
$bSuccess = $oEncryptCert.LoadFromFile("qa_data/certs/fatturapa_cert.pem")
If ($bSuccess = False) Then
    ConsoleWrite($oEncryptCert.LastErrorText & @CRLF)
    Exit
EndIf

$oCrypt.CryptAlgorithm = "pki"

$bSuccess = $oCrypt.SetEncryptCert($oEncryptCert)
If ($bSuccess = False) Then
    ConsoleWrite($oCrypt.LastErrorText & @CRLF)
    Exit
EndIf

; Indicate the underlying bulk encryption algorithm to be used:
$oCrypt.Pkcs7CryptAlg = "aes"
$oCrypt.KeyLength = 128

; There's one last option that could be set.  If is the RSA encryption encryption/padding scheme. 
; By default, RSAES_PKCS1-V1_5 is used.  If desired, the OaepPadding property could be set to True to
; use RSAES_OAEP.  (We'll leave it set at the default value of False)
$oCrypt.OaepPadding = False

; Everything is specified.  Encrypt the .p7m to create a new .p7m (which adds a layer of encryption around the opaque signature).
; The output is PKCS7 in binary DER format.
$bSuccess = $oCrypt.CkEncryptFile($sigFile,"qa_output/signed_and_encrypted.p7m")
If ($bSuccess = False) Then
    ConsoleWrite($oCrypt.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Success." & @CRLF)