PowerBuilder

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.

PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Pdf
oleobject loo_Ljd
string ls_PdfVersion
string ls_Filter
integer li_KeyLength
integer V
integer R
integer P
string ls_PrintLowResolution
string ls_PrintHighResolution
string ls_ModifyOther
string ls_ModifyAnnotations
string ls_ModifyForms
string ls_FillInForms
string ls_AssembleDoc
string ls_ExtractAnyPurpose
string ls_ExtractAccessibility
string ls_Method

li_Success = 0

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

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

// Load a PDF.
li_Success = loo_Pdf.LoadFile("c:/someDir/sample.pdf")
if li_Success = 0 then
    Write-Debug loo_Pdf.LastErrorText
    destroy loo_Pdf
    return
end if

// Get information about the PDF that was collected in the call to LoadFile.
loo_Ljd = create oleobject
li_rc = loo_Ljd.ConnectToNewObject("Chilkat.JsonObject")

loo_Pdf.GetLastJsonData(loo_Ljd)

loo_Ljd.EmitCompact = 0

Write-Debug loo_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

ls_PdfVersion = loo_Ljd.StringOf("pdfVersion")
ls_Filter = loo_Ljd.StringOf("encrypt.filter")
li_KeyLength = loo_Ljd.IntOf("encrypt.keyLength")
V = loo_Ljd.IntOf("encrypt.V")
R = loo_Ljd.IntOf("encrypt.R")
P = loo_Ljd.IntOf("encrypt.P")
ls_PrintLowResolution = loo_Ljd.StringOf("encrypt.perm.printLowResolution")
ls_PrintHighResolution = loo_Ljd.StringOf("encrypt.perm.printHighResolution")
ls_ModifyOther = loo_Ljd.StringOf("encrypt.perm.modifyOther")
ls_ModifyAnnotations = loo_Ljd.StringOf("encrypt.perm.modifyAnnotations")
ls_ModifyForms = loo_Ljd.StringOf("encrypt.perm.modifyForms")
ls_FillInForms = loo_Ljd.StringOf("encrypt.perm.fillInForms")
ls_AssembleDoc = loo_Ljd.StringOf("encrypt.perm.assembleDoc")
ls_ExtractAnyPurpose = loo_Ljd.StringOf("encrypt.perm.extractAnyPurpose")
ls_ExtractAccessibility = loo_Ljd.StringOf("encrypt.perm.extractAccessibility")
ls_Method = loo_Ljd.StringOf("encrypt.method")


destroy loo_Pdf
destroy loo_Ljd