Further progress.

[u/mdw/catacomb] / ec-exp.h

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+/* -*-c-*-
+ *
+ * $Id: ec-exp.h,v 1.1 2002/01/13 13:48:44 mdw Exp $
+ *
+ * Exponentiation operations for elliptic curves
+ *
+ * (c) 2001 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: ec-exp.h,v $
+ * Revision 1.1  2002/01/13 13:48:44  mdw
+ * Further progress.
+ *
+ */
+
+#ifndef CATACOMB_EC_EXP_H
+#define CATACOMB_EC_EXP_H
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+
+/*----- Exponentation definitions -----------------------------------------*/
+
+#define EXP_TYPE ec
+
+#define EXP_COPY(d, x) do {                                            \
+  d.x = MP_COPY(x.x);                                                  \
+  d.y = MP_COPY(x.y);                                                  \
+  d.z = x.z ? MP_COPY(x.x) : MP_NEW;                                   \
+} while (0)  
+#define EXP_DROP(x) EC_DESTROY(c, &x)
+
+#define EXP_MUL(a, x) EC_ADD(c, &a, &a, &x)
+#define EXP_SQR(a) EC_DBL(c, &a, &a);
+
+#define EXP_SETMUL(d, x, y) do {                                       \
+  EC_CREATE(&d);                                                       \
+  EC_ADD(c, &d, &x, &y);                                               \
+} while (0)
+#define EXP_SETSQR(d, x) do {                                          \
+  EC_CREATE(&d);                                                       \
+  EC_DBL(c, &d, &x);                                                   \
+} while (0)
+
+#include "exp.h"
+
+/*----- That's all, folks -------------------------------------------------*/
+
+#ifdef __cplusplus
+  }
+#endif
+
+#endif