From 5c253d1c13d9d3d4123554d6775090a100f798fa Mon Sep 17 00:00:00 2001
From: Jay Berkenbilt <ejb@ql.org>
Date: Sun, 18 Oct 2009 00:13:45 +0000
Subject: avoid low order bits of random just in case it's rand

git-svn-id: svn+q:///qpdf/trunk@815 71b93d88-0707-0410-a8cf-f5a4172ac649
---
 libqpdf/Pl_AES_PDF.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libqpdf/Pl_AES_PDF.cc b/libqpdf/Pl_AES_PDF.cc
index 4b715012..c3fd03a9 100644
--- a/libqpdf/Pl_AES_PDF.cc
+++ b/libqpdf/Pl_AES_PDF.cc
@@ -121,7 +121,7 @@ Pl_AES_PDF::initializeVector()
     srandom(seed);
     for (unsigned int i = 0; i < this->buf_size; ++i)
     {
-	this->cbc_block[i] = (unsigned char)(random() & 0xff);
+	this->cbc_block[i] = (unsigned char)((random() & 0xff0) >> 4);
     }
 }
 
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