Standard curves and curve checking.

[u/mdw/catacomb] / ectab.h

diff --git a/ectab.h b/ectab.h
new file mode 100644 (file)
index 0000000..d8d4302
--- /dev/null
+++ b/ectab.h
@@ -0,0 +1,83 @@
+/* -*-c-*-
+ *
+ * $Id: ectab.h,v 1.1 2004/03/27 17:54:11 mdw Exp $
+ *
+ * Table of standard elliptic curves (internal)
+ *
+ * (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.
+ */
+
+/*----- Revision history --------------------------------------------------* 
+ *
+ * $Log: ectab.h,v $
+ * Revision 1.1  2004/03/27 17:54:11  mdw
+ * Standard curves and curve checking.
+ *
+ */
+
+#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 */
+  const mpw *p; size_t psz;            /* Modulus */
+  const mpw *a; size_t asz;            /* Elliptic curve parameters */
+  const mpw *b; size_t bsz;
+  const mpw *r; size_t rsz;            /* Order of common point %$g$% */
+  const mpw *h; size_t hsz;            /* Cofactor %$h = \#E/r$% */
+  const mpw *gx; size_t gxsz;          /* Common point */
+  const mpw *gy; size_t gysz;
+} ecdata;
+
+enum {
+  FTAG_PRIME,                          /* Prime but not nice */
+  FTAG_NICEPRIME,                      /* Nice prime field */
+  FTAG_BINPOLY                         /* Any old binary field */
+};
+
+typedef struct ecentry {
+  const char *name;
+  const ecdata *data;
+} ecentry;
+
+/*----- Global variables --------------------------------------------------*/
+
+extern const ecentry ectab[];
+
+/*----- That's all, folks -------------------------------------------------*/
+
+#ifdef __cplusplus
+  }
+#endif
+
+#endif