From 1cbae148197662ced5fbad6e0da5e2e9e909ca8d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B3zek=20Budzi=C5=84ski?=
 <jozef.budzinski@nowwecomply.com>
Date: Tue, 2 Apr 2019 16:46:04 +0200
Subject: [PATCH] fix prevent everything

---
 PyPDF2/pdf.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/PyPDF2/pdf.py b/PyPDF2/pdf.py
index c5cae9e673..2974fef39c 100644
--- a/PyPDF2/pdf.py
+++ b/PyPDF2/pdf.py
@@ -420,7 +420,7 @@ def encrypt(self, user_pwd, owner_pwd = None, use_128bit = True):
             rev = 2
             keylen = int(40 / 8)
         # permit everything:
-        P = -1
+        P = -3904
         O = ByteStringObject(_alg33(owner_pwd, user_pwd, rev, keylen))
         ID_1 = ByteStringObject(md5(b_(repr(time.time()))).digest())
         ID_2 = ByteStringObject(md5(b_(repr(random.random()))).digest())