From 75a42ec54dbf721caa659ddf02c1f46fc2cb4bef Mon Sep 17 00:00:00 2001
From: mlot <petri-rush-curvy@duck.com>
Date: Fri, 6 Jun 2025 13:40:57 -0400
Subject: initial commit for archiving

---
 Chapter13PracBruteForcePDF.py | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 Chapter13PracBruteForcePDF.py

(limited to 'Chapter13PracBruteForcePDF.py')

diff --git a/Chapter13PracBruteForcePDF.py b/Chapter13PracBruteForcePDF.py
new file mode 100644
index 0000000..14af439
--- /dev/null
+++ b/Chapter13PracBruteForcePDF.py
@@ -0,0 +1,32 @@
+#! /usr/bin/env python3
+
+# Chapter 13 Practice Brute-Force PDF Password Breaker
+# USAGE: Change the pdfFile varible below and run the script to try 44,000 English words
+#           from the dictionary.txt file to decrypt the encrypted PDF.
+
+import PyPDF2
+
+pdfFile = open('bruteForce.pdf', 'rb') #Change this file name and location
+pdfReader = PyPDF2.PdfFileReader(pdfFile)
+
+dictionaryFile = open('dictionary.txt')
+passwordList = dictionaryFile.readlines()
+
+for word in range(len(passwordList)):
+    passWord = passwordList[word].strip()
+    passWorkedUpper = pdfReader.decrypt(passWord.upper())
+    if passWorkedUpper == 1:
+        print('The password is: ' + passWord.upper())
+        break
+    else:
+        print(passWord.upper() + ' did NOT work...')
+    passWorkedLower = pdfReader.decrypt(passWord.lower())
+    if passWorkedLower == 1:
+        print('The password is: ' + passWord.lower())
+        break
+    else:
+        print(passWord.lower() + ' did NOT work...') 
+
+dictionaryFile.close()
+pdfFile.close()
+                
-- 
cgit