commit 67badb44513f09089080ea18f0c8ca3de7290151
author k-stachowiak <krzysiek.stachowiak@gmail.com> Tue Oct 22 13:25:06 2019 +0200
committer k-stachowiak <krzysiek.stachowiak@gmail.com> Tue Oct 22 13:25:06 2019 +0200
tree 9963a45b90f6871d3c619c4450343d92e6c04db3
parent 92348d1c4931f8c33c2d092928afca556f672c42

Secure array index in its bounds

library/gcm.c

diff --git a/library/gcm.c b/library/gcm.c
index 5121a7a..2ee5256 100644
--- a/library/gcm.c
+++ b/library/gcm.c
@@ -246,7 +246,7 @@
     for( i = 15; i >= 0; i-- )
     {
         lo = x[i] & 0xf;
-        hi = x[i] >> 4;
+        hi = ( x[i] >> 4 ) & 0xf;
 
         if( i != 15 )
         {