X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/ba6e6b64033b1f9de49feccb5c9cd438354481f7..0f00dc4c8eb47e67bc0f148c2dd109f73a451e0a:/math/ectab.h

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+/* -*-c-*-
+ *
+ * Table of standard elliptic curves
+ *
+ * (c) 2004 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------*
+ *
+ * This file is part of Catacomb.
+ *
+ * Catacomb is free software; you can redistribute it and/or modify
+ * 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.
+ */
+
+#ifndef CATACOMB_ECTAB_H
+#define CATACOMB_ECTAB_H
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+
+/*----- Header files ------------------------------------------------------*/
+
+#include "ec.h"
+
+/*----- Data structures ---------------------------------------------------*/
+
+typedef struct ecdata {
+  unsigned ftag;			/* The kind of curve this is */
+  mp p, beta;				/* Modulus, and conversion magic */
+  mp a, b;				/* Elliptic curve parameters */
+  mp r;					/* Order of common point %$g$% */
+  mp h;					/* Cofactor %$h = \#E/r$% */
+  mp gx, gy;				/* Common point */
+} ecdata;
+
+enum {
+  FTAG_PRIME,				/* Prime but not nice */
+  FTAG_NICEPRIME,			/* Nice prime field */
+  FTAG_BINPOLY,				/* Binary field, poly basis */
+  FTAG_BINNORM				/* Binary field, normal basis */
+};
+
+typedef struct ecentry {
+  const char *name;
+  ecdata *data;
+} ecentry;
+
+/*----- Global variables --------------------------------------------------*/
+
+extern const ecentry ectab[];
+
+/*----- That's all, folks -------------------------------------------------*/
+
+#ifdef __cplusplus
+  }
+#endif
+
+#endif