Newbie to acrobat password protection

Hi! All,
I am writing technical specifications for distribution among vendors. I used password protection to make them not printable, unable to copy or taking screen shot. However, I was told that there are many third party software, which can 'crack' the password protected PDF files. I was told that "Advanced PDF Password Recovery by ElcomSoft can 'crack' anything.
Is there anyway that I can 'truely' protect them? Does Adobe have a solution to address this type of concern?
Thanx!

Thanx for the reply. I will look into this.
Interestingly enough, this article addresses exactly my concern about PDF, http://www.cs.cmu.edu/~dst/Adobe/Gallery/PDFsecurity.pdf.
Thanx!

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Need javascript/VB code to open password protected PDF file by passing password in code itself.

Hi,
I have used PDFcreator to create the PDF file with password security
'To create PDF file with password security
With PDFCreator1
.cOption("UseAutosave") = 1
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' ==============
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''VB code for fixing Digital Signature --calling jaascript file from SDK.
Sub GetDigitalSignature(PDFFilepath As String, PDFFileName As String, PFXfile As String, Password As String, Top As Double,
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Dim gapp As Acrobat.AcroApp
Dim gpddoc As Acrobat.AcroPDDoc
Dim jso As Object
Dim FullPath As String
Dim avDoc As CAcroAVDoc
Dim boK As Boolean
Dim ppklite As Object
Set avDoc = CreateObject("AcroExch.AVDoc")
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Now i am able to create PDF with Digital signature. But We want to assign password protection too..and problem is once we fix Digital signature we can't change security.
My problem is to pass password at the time of opening PDF for embedding signature. Password window should not prompt to the user while running VBA application.
Can you please help me to pass password on fly when file prompt password while opening PDF file. As file need to be opened at the time of fixing signature using sdk javascript code.

Correct, you need to encrypt then sign.
Unfortunately, there is no way to pass a password for opening.

Newbie to acrobat password protection

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