ct.c, ct.h: New constant-time operations.

[u/mdw/catacomb] / ectab.h

diff --git a/ectab.h b/ectab.h
index 925924d..7e6161c 100644 (file)
--- a/ectab.h
+++ b/ectab.h
@@ -1,13 +1,13 @@
 /* -*-c-*-
  *
- * $Id: ectab.h,v 1.2 2004/04/01 12:50:09 mdw Exp $
+ * $Id: ectab.h,v 1.4 2004/04/08 01:36:15 mdw Exp $
  *
  * Table of standard elliptic curves
  *
  * (c) 2004 Straylight/Edgeware
  */
 
-/*----- Licensing notice --------------------------------------------------* 
+/*----- Licensing notice --------------------------------------------------*
  *
  * This file is part of Catacomb.
  *
@@ -15,33 +15,18 @@
  * it under the terms of the GNU Library General Public License as
  * published by the Free Software Foundation; either version 2 of the
  * License, or (at your option) any later version.
- * 
+ *
  * Catacomb is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU Library General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Library General Public
  * License along with Catacomb; if not, write to the Free
  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  * MA 02111-1307, USA.
  */
 
-/*----- Revision history --------------------------------------------------* 
- *
- * $Log: ectab.h,v $
- * Revision 1.2  2004/04/01 12:50:09  mdw
- * Add cyclic group abstraction, with test code.  Separate off exponentation
- * functions for better static linking.  Fix a buttload of bugs on the way.
- * Generally ensure that negative exponents do inversion correctly.  Add
- * table of standard prime-field subgroups.  (Binary field subgroups are
- * currently unimplemented but easy to add if anyone ever finds a good one.)
- *
- * Revision 1.1  2004/03/27 17:54:11  mdw
- * Standard curves and curve checking.
- *
- */
-
 #ifndef CATACOMB_ECTAB_H
 #define CATACOMB_ECTAB_H
 
@@ -50,14 +35,14 @@
 #endif
 
 /*----- Header files ------------------------------------------------------*/
-    
+
 #include "ec.h"
 
 /*----- Data structures ---------------------------------------------------*/
 
 typedef struct ecdata {
   unsigned ftag;                       /* The kind of curve this is */
-  mp p;                                        /* Modulus */
+  mp p, beta;                          /* Modulus, and conversion magic */
   mp a, b;                             /* Elliptic curve parameters */
   mp r;                                        /* Order of common point %$g$% */
   mp h;                                        /* Cofactor %$h = \#E/r$% */
@@ -67,7 +52,8 @@ typedef struct ecdata {
 enum {
   FTAG_PRIME,                          /* Prime but not nice */
   FTAG_NICEPRIME,                      /* Nice prime field */
-  FTAG_BINPOLY                         /* Any old binary field */
+  FTAG_BINPOLY,                                /* Binary field, poly basis */
+  FTAG_BINNORM                         /* Binary field, normal basis */
 };
 
 typedef struct ecentry {