commit b55f5789827e825a05b8df4ba01ee8313321a5db
author Manuel Pégourié-Gonnard <mpg@elzevir.fr> Sat Jan 18 18:49:32 2014 +0100
committer Paul Bakker <p.j.bakker@polarssl.org> Mon Jul 07 16:01:30 2014 +0200
tree 8a9352cf1c9091e61ce62c94c367dbd1ab38a618
parent 4091141368654d45d6b4810a91acf113325f4fc5

Fix missing error checking in gcm

library/gcm.c

diff --git a/library/gcm.c b/library/gcm.c
index 60dc0cd..ba42fd0 100644
--- a/library/gcm.c
+++ b/library/gcm.c
@@ -309,9 +309,15 @@
                       const unsigned char *input,
                       unsigned char *output )
 {
+    int ret;
     unsigned char check_tag[16];
 
-    gcm_crypt_and_tag( ctx, GCM_DECRYPT, length, iv, iv_len, add, add_len, input, output, tag_len, check_tag );
+    if( ( ret = gcm_crypt_and_tag( ctx, GCM_DECRYPT, length,
+                                   iv, iv_len, add, add_len,
+                                   input, output, tag_len, check_tag ) ) != 0 )
+    {
+        return( ret );
+    }
 
     if( memcmp( check_tag, tag, tag_len ) == 0 )
         return( 0 );