Sign a File

When data-to-be-signed is not a part of the XML document, a resolver class is used to resolve references to the data. For example, you can use FileSystemResolver to sign the data that is stored in an external file. To sign a file, follow these steps:

Create a new XmlSignature object.
Create a resolver and attach it to the XmlSignature object.
Add reference to the desired data.
Call the CreateSignature method.

The following example uses FileSystemResolver to sign a file:

' The following certificate will be used for signing
signingCert="CERT_FIND_SUBJECT_STR=CREA_TESTUSER_1"

' Create an xml signature object
Set cs = CreateObject("CreaSignClientIE.XmlSignature")

' Create a file system resolver and initialize it
Set r = CreateObject("CreaSignClientIE.FileSystemResolver")
rootPath = Mid(WScript.ScriptFullName,1,InStrRev(WScript.ScriptFullName,"\"))
r.RootPath = rootPath

' Attach the resolver to the xml signature object
Set cs.Resolver = r

' Add a reference to the file we want to sign 
cs.AddReference "","files\someFile1.txt",""

' Create a signature
cs.CreateSignature signingCert,0

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

WScript.Echo "Result saved to: " & saveTo

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