(Xojo Plugin) Extract XML File from a .p7m (e.g. FATTURA ELETTRONICA, ITALY)

Xojo Plugin example to extract the original file from a .p7m (Signed-Data PKCS7 Format) The .p7m contains the signed contents of the original file.

One use for this example is to extract the XML file from a Fattura Elettronica .p7m signature.

Chilkat Xojo Plugin Download Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

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

Dim crypt As New Chilkat.Crypt2

Dim outputFile As String
outputFile = "testData/xml/original.xml"
Dim inFile As String
inFile = "testData/p7m/fattura_signature.p7m"

// Verify the signature and extract the XML file.
Dim success As Boolean
success = crypt.VerifyP7M(inFile,outputFile)
If (success = False) Then
    System.DebugLog(crypt.LastErrorText)
    Return
End If

System.DebugLog("Success!")