AutoIt Requires Chilkat v11.7.0+

Remove the Password and Encryption from a PDF

See more PDF Protection Examples

Demonstrates the removeEncryption operation, which saves the PDF with no encryption at all: no password, no restrictions. It needs owner rights, so the PDF is loaded with its owner password. As with every Protection operation, the change is applied when the file is written. AutoIt

Local $bSuccess = False

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

;  The PDF used in this example is available at encrypted_user_password.pdf

$oPdf = ObjCreate("Chilkat.Pdf")

;  Removing the encryption needs owner rights: load with the owner password.
$oPdf.OwnerPassword = "owner-secret"
$bSuccess = $oPdf.LoadFile("qa_data/pdf/encrypted_user_password.pdf")
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

$oJson = ObjCreate("Chilkat.JsonObject")
$oJsonOut = ObjCreate("Chilkat.JsonObject")
$bSuccess = $oPdf.Protection("getInfo",$oJson,$oJsonOut)
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("encrypted, as loaded: " & $oJsonOut.BoolOf("loaded.encrypted") & @CRLF)
ConsoleWrite("algorithm: " & $oJsonOut.StringOf("loaded.algorithm") & @CRLF)

$bSuccess = $oPdf.Protection("removeEncryption",$oJson,$oJsonOut)
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("will be saved encrypted: " & $oJsonOut.BoolOf("pending.encrypted") & @CRLF)

$bSuccess = $oPdf.WriteFile("qa_output/minutes_unprotected.pdf")
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

;  The result is an ordinary PDF that opens without a password.
$oReader = ObjCreate("Chilkat.Pdf")
$oInfo = ObjCreate("Chilkat.JsonObject")
$bSuccess = $oReader.PreLoadCheck("qa_output/minutes_unprotected.pdf",$oInfo)
If ($bSuccess = False) Then
    ConsoleWrite($oReader.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("encrypted: " & $oInfo.BoolOf("encrypted") & @CRLF)
$bSuccess = $oReader.LoadFile("qa_output/minutes_unprotected.pdf")
If ($bSuccess = False) Then
    ConsoleWrite($oReader.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("pages: " & $oReader.NumPages & @CRLF)

;  Sample output:

;  encrypted, as loaded: True
;  algorithm: rc4-128
;  will be saved encrypted: False
;  encrypted: False
;  pages: 1