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

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

*** 1,7 ****
  /*
!  * Copyright (c) 2007, 2016, 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
--- 1,7 ----
  /*
!  * 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
*** 32,42 ****
   *
   * Contributor(s):
   *   Netscape Communications Corporation
   *   Douglas Stebila <douglas@stebila.ca> of Sun Laboratories.
   *
!  * Last Modified Date from the Original Code: Nov 2016
   *********************************************************************** */
  
  /*  Arbitrary precision integer arithmetic library */
  
  #include "mpi-priv.h"
--- 32,42 ----
   *
   * Contributor(s):
   *   Netscape Communications Corporation
   *   Douglas Stebila <douglas@stebila.ca> of Sun Laboratories.
   *
!  * Last Modified Date from the Original Code: Nov 2019
   *********************************************************************** */
  
  /*  Arbitrary precision integer arithmetic library */
  
  #include "mpi-priv.h"
*** 2134,2144 ****
        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) {
        MP_CHECKOK( mp_add(c, p, c) );
      }
      res = k;
    }
  
--- 2134,2147 ----
        MP_CHECKOK( mp_add(&f, &g, &f) ); /* f = f + g */
        MP_CHECKOK( mp_add(c,  &d,  c) ); /* c = c + d */
      }
    }
    if (res >= 0) {
!     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;
    }