git.distorted.org.uk Git - u/mdw/catacomb/blob - ectab.h

   1 /* -*-c-*-
   2  *
   3  * $Id: ectab.h,v 1.1 2004/03/27 17:54:11 mdw Exp $
   4  *
   5  * Table of standard elliptic curves (internal)
   6  *
   7  * (c) 2004 Straylight/Edgeware
   8  */
   9
  10 /*----- Licensing notice --------------------------------------------------*
  11  *
  12  * This file is part of Catacomb.
  13  *
  14  * Catacomb is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU Library General Public License as
  16  * published by the Free Software Foundation; either version 2 of the
  17  * License, or (at your option) any later version.
  18  *
  19  * Catacomb is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU Library General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU Library General Public
  25  * License along with Catacomb; if not, write to the Free
  26  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  27  * MA 02111-1307, USA.
  28  */
  29
  30 /*----- Revision history --------------------------------------------------*
  31  *
  32  * $Log: ectab.h,v $
  33  * Revision 1.1  2004/03/27 17:54:11  mdw
  34  * Standard curves and curve checking.
  35  *
  36  */
  37
  38 #ifndef CATACOMB_ECTAB_H
  39 #define CATACOMB_ECTAB_H
  40
  41 #ifdef __cplusplus
  42   extern "C" {
  43 #endif
  44
  45 /*----- Header files ------------------------------------------------------*/
  46
  47 #include "ec.h"
  48
  49 /*----- Data structures ---------------------------------------------------*/
  50
  51 typedef struct ecdata {
  52   unsigned ftag;                        /* The kind of curve this is */
  53   const mpw *p; size_t psz;             /* Modulus */
  54   const mpw *a; size_t asz;             /* Elliptic curve parameters */
  55   const mpw *b; size_t bsz;
  56   const mpw *r; size_t rsz;             /* Order of common point %$g$% */
  57   const mpw *h; size_t hsz;             /* Cofactor %$h = \#E/r$% */
  58   const mpw *gx; size_t gxsz;           /* Common point */
  59   const mpw *gy; size_t gysz;
  60 } ecdata;
  61
  62 enum {
  63   FTAG_PRIME,                           /* Prime but not nice */
  64   FTAG_NICEPRIME,                       /* Nice prime field */
  65   FTAG_BINPOLY                          /* Any old binary field */
  66 };
  67
  68 typedef struct ecentry {
  69   const char *name;
  70   const ecdata *data;
  71 } ecentry;
  72
  73 /*----- Global variables --------------------------------------------------*/
  74
  75 extern const ecentry ectab[];
  76
  77 /*----- That's all, folks -------------------------------------------------*/
  78
  79 #ifdef __cplusplus
  80   }
  81 #endif
  82
  83 #endif