From 6d8e883fe6ec6a39dd09a0148e05abc365521ff1 Mon Sep 17 00:00:00 2001
From: Colin VanLang <colinvl@dropbox.com>
Date: Thu, 15 Oct 2015 13:57:35 -0400
Subject: [PATCH] Fixes bluebeam password protection issue

---
 src/core/crypto.js | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/core/crypto.js b/src/core/crypto.js
index 95d63b175..80c8fe78a 100644
--- a/src/core/crypto.js
+++ b/src/core/crypto.js
@@ -1762,9 +1762,10 @@ var CipherTransformFactory = (function CipherTransformFactoryClosure() {
       if (pdfAlgorithm.checkUserPassword(password, userValidationSalt,
                                          userPassword)) {
         return pdfAlgorithm.getUserKey(password, userKeySalt, userEncryption);
-      } else if (pdfAlgorithm.checkOwnerPassword(password, ownerValidationSalt,
-                                                 uBytes,
-                                                 ownerPassword)) {
+      } else if (password.length && pdfAlgorithm.checkOwnerPassword(password,
+                                                   ownerValidationSalt,
+                                                   uBytes,
+                                                   ownerPassword)) {
         return pdfAlgorithm.getOwnerKey(password, ownerKeySalt, uBytes,
                                         ownerEncryption);
       }