src/jdk.crypto.ec/share/native/libsunec/impl/mpi.c

rev 52893 : 8225603: Enhancement for big integers
Reviewed-by: darcy, ahgross, rhalade

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2007, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2007, 2020, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either

@@ -32,11 +32,11 @@
  *
  * Contributor(s):
  *   Netscape Communications Corporation
  *   Douglas Stebila <douglas@stebila.ca> of Sun Laboratories.
  *
- * Last Modified Date from the Original Code: Nov 2016
+ * Last Modified Date from the Original Code: Nov 2019
  *********************************************************************** */
 
 /*  Arbitrary precision integer arithmetic library */
 
 #include "mpi-priv.h"

@@ -2134,11 +2134,14 @@
       MP_CHECKOK( mp_add(&f, &g, &f) ); /* f = f + g */
       MP_CHECKOK( mp_add(c,  &d,  c) ); /* c = c + d */
     }
   }
   if (res >= 0) {
-    while (MP_SIGN(c) != MP_ZPOS) {
+    if (s_mp_cmp(c, p) >= 0) {
+      MP_CHECKOK( mp_div(c, p, NULL, c));
+    }
+    if (MP_SIGN(c) != MP_ZPOS) {
       MP_CHECKOK( mp_add(c, p, c) );
     }
     res = k;
   }