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

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+/* -*-c-*-
+ *
+ * Reading and writing packet buffers
+ *
+ * (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.
+ */
+
+#ifndef CATACOMB_BUF_H
+#define CATACOMB_BUF_H
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+
+/*----- Header files ------------------------------------------------------*/
+
+#include <mLib/bits.h>
+#include <mLib/buf.h>
+
+#ifndef CATACOMB_MP_H
+#  include "mp.h"
+#endif
+
+#ifndef CATACOMB_EC_H
+#  include "ec.h"
+#endif
+
+/*----- Functions provided ------------------------------------------------*/
+
+/* --- @buf_getmp@ --- *
+ *
+ * Arguments:	@buf *b@ = pointer to a buffer block
+ *
+ * Returns:	A multiprecision integer, or null if there wasn't one there.
+ *
+ * Use:		Gets a multiprecision integer from a buffer.
+ */
+
+extern mp *buf_getmp(buf */*b*/);
+
+/* --- @buf_putmp@ --- *
+ *
+ * Arguments:	@buf *b@ = pointer to a buffer block
+ *		@mp *m@ = a multiprecision integer
+ *
+ * Returns:	Zero if it worked, nonzero if there wasn't enough space.
+ *
+ * Use:		Puts a multiprecision integer to a buffer.
+ */
+
+extern int buf_putmp(buf */*b*/, mp */*m*/);
+
+/* --- @buf_getec@ --- *
+ *
+ * Arguments:	@buf *b@ = pointer to a buffer block
+ *		@ec *p@ = where to put the point
+ *
+ * Returns:	Zero if it worked, nonzero if it failed.
+ *
+ * Use:		Gets a multiprecision integer from a buffer.  The point must
+ *		be initialized.
+ */
+
+extern int buf_getec(buf */*b*/, ec */*p*/);
+
+/* --- @buf_putec@ --- *
+ *
+ * Arguments:	@buf *b@ = pointer to a buffer block
+ *		@ec *p@ = an elliptic curve point
+ *
+ * Returns:	Zero if it worked, nonzero if there wasn't enough space.
+ *
+ * Use:		Puts an elliptic curve point to a buffer.
+ */
+
+extern int buf_putec(buf */*b*/, ec */*p*/);
+
+/*----- That's all, folks -------------------------------------------------*/
+
+#ifdef __cplusplus
+  }
+#endif
+
+#endif