From 48fa0172ed88a7b02e58b57169422938338939a6 Mon Sep 17 00:00:00 2001
From: mduan <duan.mack@gmail.com>
Date: Tue, 8 Jan 2013 19:00:05 -0800
Subject: [PATCH] Support corrupted pdfs that are encrypted but lack 'ID' in
 trailer

---
 src/obj.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/obj.js b/src/obj.js
index c2dc720d9..df09d3630 100644
--- a/src/obj.js
+++ b/src/obj.js
@@ -342,8 +342,9 @@ var XRef = (function XRefClosure() {
 
     var encrypt = trailerDict.get('Encrypt');
     if (encrypt) {
-      var fileId = trailerDict.get('ID');
-      this.encrypt = new CipherTransformFactory(encrypt, fileId[0], password);
+      var ids = trailerDict.get('ID');
+      var fileId = (ids && ids.length) ? ids[0] : '';
+      this.encrypt = new CipherTransformFactory(encrypt, fileId, password);
     }
 
     // get the root dictionary (catalog) object