PowerShell Requires Chilkat v11.0.0+

PDF Get Encryption and Permissions Information

See more PDF Signatures Examples

Determine if a PDF is encrypted, and the associated user permissions.

Note: Some PDFs are encrypted but not password-protected. In such cases, encryption is used primarily for preventing unauthorized modifications to the document, but it doesn't restrict access. Therefore, you can open and read the document without a password.

PowerShell

Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

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

$pdf = New-Object Chilkat.Pdf

#  Load a PDF.
$success = $pdf.LoadFile("c:/someDir/sample.pdf")
if ($success -eq $false) {
    $($pdf.LastErrorText)
    exit
}

#  Get information about the PDF that was collected in the call to LoadFile.
$ljd = New-Object Chilkat.JsonObject
$pdf.GetLastJsonData($ljd)

$ljd.EmitCompact = $false

$($ljd.Emit())

#  Sample output:

#  {
#    "pdfVersion": "1.6",
#    "encrypt": {
#      "filter": "/Standard",
#      "keyLength": 128,
#      "V": 4,
#      "R": 4,
#      "P": -1340,
#      "perm": {
#        "printLowResolution": "allowed",
#        "printHighResolution": "allowed",
#        "modifyOther": "not allowed",
#        "modifyAnnotations": "allowed",
#        "modifyForms": "not allowed",
#        "fillInForms": "allowed",
#        "assembleDoc": "allowed",
#        "extractAnyPurpose": "not allowed",
#        "extractAccessibility": "not allowed"
#      },
#      "method": "AESV2"
#    }
#  }

#  Use this online tool to generate parsing code from sample JSON: 
#  Generate Parsing Code from JSON

$pdfVersion = $ljd.StringOf("pdfVersion")
$Filter = $ljd.StringOf("encrypt.filter")
$KeyLength = $ljd.IntOf("encrypt.keyLength")
$V = $ljd.IntOf("encrypt.V")
$R = $ljd.IntOf("encrypt.R")
$P = $ljd.IntOf("encrypt.P")
$PrintLowResolution = $ljd.StringOf("encrypt.perm.printLowResolution")
$PrintHighResolution = $ljd.StringOf("encrypt.perm.printHighResolution")
$ModifyOther = $ljd.StringOf("encrypt.perm.modifyOther")
$ModifyAnnotations = $ljd.StringOf("encrypt.perm.modifyAnnotations")
$ModifyForms = $ljd.StringOf("encrypt.perm.modifyForms")
$FillInForms = $ljd.StringOf("encrypt.perm.fillInForms")
$AssembleDoc = $ljd.StringOf("encrypt.perm.assembleDoc")
$ExtractAnyPurpose = $ljd.StringOf("encrypt.perm.extractAnyPurpose")
$ExtractAccessibility = $ljd.StringOf("encrypt.perm.extractAccessibility")
$Method = $ljd.StringOf("encrypt.method")