Create a Serial Signature of a CreaDoc Document

With a serial signature you can prove that one signature was created before another one. To create a serial signature, follow these steps:

Load the XML document that already contains a signature.
Create a new CreaDoc object and attach it to the document.
Call the CreateSignatureSerial method and specify which of the existing signatures should be signed.

' The following certificate will be used for signing
signingCert="CERT_FIND_SUBJECT_STR=CREA_TESTUSER_2"

set doc=CreateObject("Msxml2.FreeThreadedDOMDocument.4.0")
doc.preserveWhiteSpace=true ' Important!
if not doc.load("files\signedDataAndVis.xml") then Err.Raise 8, "" , doc.parseError.reason

' Create a CreaDoc object and attach it to the document
set cd = CreateObject("CreaSignClientIE.CreaDoc")
set cd.XmlNode=doc.documentElement

' Add a serial (counter) signature to the existing one

cd.CreateSignatureSerial cd.Signatures(0).id, signingCert, 0

' Save the result to a file
saveTo="files/signedSerial.xml"
if WScript.Arguments.Count>0 then saveTo=WScript.Arguments(0)
cd.XmlNode.ownerDocument.save saveTo

WScript.Echo "Result saved to: " & saveTo

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