(CkPython) 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.

Note: This example requires Chilkat v9.5.0.96 or later.

Chilkat Python Downloads install with pip pip3 install chilkat or download... Python Module for Windows, MacOS, Linux, Alpine Linux, Solaris

import sys
import chilkat

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

pdf = chilkat.CkPdf()

# Open a PDF.
# Starting in Chilkat v9.5.0.96, the LastJsonData will contain information about encryption and permissions.
success = pdf.LoadFile("c:/someDir/sample.pdf")
if (success == False):
    print(pdf.lastErrorText())
    sys.exit()

# Examine the LastJsonData
# ljd is a CkJsonObject
ljd = pdf.LastJsonData()
ljd.put_EmitCompact(False)

print(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")