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Add a Document Timestamp Signature to an already-signed PDF

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Demonstrates how to add a document timestamp signature to an already-signed PDF.

Note: This example requires Chilkat v9.5.0.99 or greater.

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Local $bSuccess = False

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

$oPdf = ObjCreate("Chilkat.Pdf")

; Load the PDF that has already been signed.
$bSuccess = $oPdf.LoadFile("qa_data/pdf/helloWorld_signed.pdf")
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

$oJson = ObjCreate("Chilkat.JsonObject")

$oJson.UpdateBool("invisibleSignature",True)
$oJson.UpdateString("subFilter","/ETSI.RFC3161")

$oJson.UpdateBool("timestampToken.enabled",True)

; In this example, we'll use a free TSA server (timestamp.digicert.com), but you may want to use your own timestamp authority server.
$oJson.UpdateString("timestampToken.tsaUrl","http://timestamp.digicert.com")

; If the timestamp server requires a username/password, do the following.  Otherwise omit the following few lines of code.
$oJson.UpdateString("timestampToken.tsaUsername","the_tsa_username")
$oJson.UpdateString("timestampToken.tsaPassword","the_tsa_password")

; When requesting the timestamp token, ask the server to include its certificate in the timestamp token response.
; This allows for the timestamp server's certificate to be included in the LTV validation (i.e. if the timestamp server
; has an OCSP URL, then Chilkat will also do the OCSP request for the timestamp server's certificate.)
$oJson.UpdateBool("timestampToken.requestTsaCert",True)

$bSuccess = $oPdf.SignPdf($oJson,"c:/temp/qa_output/helloWorld_signed_2.pdf")
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Successfully added a Document Timestamp Signature to the PDF" & @CRLF)