PowerBuilder 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. PowerBuilder

integer li_rc
long li_Success
oleobject loo_Pdf
oleobject loo_Json
oleobject loo_JsonOut
oleobject loo_Reader
oleobject loo_Info

li_Success = 0

//  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

loo_Pdf = create oleobject
li_rc = loo_Pdf.ConnectToNewObject("Chilkat.Pdf")
if li_rc < 0 then
    destroy loo_Pdf
    MessageBox("Error","Connecting to COM object failed")
    return
end if

//  Removing the encryption needs owner rights: load with the owner password.
loo_Pdf.OwnerPassword = "owner-secret"
li_Success = loo_Pdf.LoadFile("qa_data/pdf/encrypted_user_password.pdf")
if li_Success = 0 then
    Write-Debug loo_Pdf.LastErrorText
    destroy loo_Pdf
    return
end if

loo_Json = create oleobject
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")

loo_JsonOut = create oleobject
li_rc = loo_JsonOut.ConnectToNewObject("Chilkat.JsonObject")

li_Success = loo_Pdf.Protection("getInfo",loo_Json,loo_JsonOut)
if li_Success = 0 then
    Write-Debug loo_Pdf.LastErrorText
    destroy loo_Pdf
    destroy loo_Json
    destroy loo_JsonOut
    return
end if

Write-Debug "encrypted, as loaded: " + string(loo_JsonOut.BoolOf("loaded.encrypted"))
Write-Debug "algorithm: " + loo_JsonOut.StringOf("loaded.algorithm")

li_Success = loo_Pdf.Protection("removeEncryption",loo_Json,loo_JsonOut)
if li_Success = 0 then
    Write-Debug loo_Pdf.LastErrorText
    destroy loo_Pdf
    destroy loo_Json
    destroy loo_JsonOut
    return
end if

Write-Debug "will be saved encrypted: " + string(loo_JsonOut.BoolOf("pending.encrypted"))

li_Success = loo_Pdf.WriteFile("qa_output/minutes_unprotected.pdf")
if li_Success = 0 then
    Write-Debug loo_Pdf.LastErrorText
    destroy loo_Pdf
    destroy loo_Json
    destroy loo_JsonOut
    return
end if

//  The result is an ordinary PDF that opens without a password.
loo_Reader = create oleobject
li_rc = loo_Reader.ConnectToNewObject("Chilkat.Pdf")

loo_Info = create oleobject
li_rc = loo_Info.ConnectToNewObject("Chilkat.JsonObject")

li_Success = loo_Reader.PreLoadCheck("qa_output/minutes_unprotected.pdf",loo_Info)
if li_Success = 0 then
    Write-Debug loo_Reader.LastErrorText
    destroy loo_Pdf
    destroy loo_Json
    destroy loo_JsonOut
    destroy loo_Reader
    destroy loo_Info
    return
end if

Write-Debug "encrypted: " + string(loo_Info.BoolOf("encrypted"))
li_Success = loo_Reader.LoadFile("qa_output/minutes_unprotected.pdf")
if li_Success = 0 then
    Write-Debug loo_Reader.LastErrorText
    destroy loo_Pdf
    destroy loo_Json
    destroy loo_JsonOut
    destroy loo_Reader
    destroy loo_Info
    return
end if

Write-Debug "pages: " + string(loo_Reader.NumPages)

//  Sample output:

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


destroy loo_Pdf
destroy loo_Json
destroy loo_JsonOut
destroy loo_Reader
destroy loo_Info