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

   1 /* -*-c-*-
   2  *
   3  * $Id$
   4  *
   5  * Reading and writing packet buffers
   6  *
   7  * (c) 2001 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 #ifndef CATACOMB_BUF_H
  31 #define CATACOMB_BUF_H
  32
  33 #ifdef __cplusplus
  34   extern "C" {
  35 #endif
  36
  37 /*----- Header files ------------------------------------------------------*/
  38
  39 #include <mLib/bits.h>
  40 #include <mLib/buf.h>
  41
  42 #ifndef CATACOMB_MP_H
  43 #  include "mp.h"
  44 #endif
  45
  46 #ifndef CATACOMB_EC_H
  47 #  include "ec.h"
  48 #endif
  49
  50 /*----- Functions provided ------------------------------------------------*/
  51
  52 /* --- @buf_getmp@ --- *
  53  *
  54  * Arguments:   @buf *b@ = pointer to a buffer block
  55  *
  56  * Returns:     A multiprecision integer, or null if there wasn't one there.
  57  *
  58  * Use:         Gets a multiprecision integer from a buffer.
  59  */
  60
  61 extern mp *buf_getmp(buf */*b*/);
  62
  63 /* --- @buf_putmp@ --- *
  64  *
  65  * Arguments:   @buf *b@ = pointer to a buffer block
  66  *              @mp *m@ = a multiprecision integer
  67  *
  68  * Returns:     Zero if it worked, nonzero if there wasn't enough space.
  69  *
  70  * Use:         Puts a multiprecision integer to a buffer.
  71  */
  72
  73 extern int buf_putmp(buf */*b*/, mp */*m*/);
  74
  75 /* --- @buf_getec@ --- *
  76  *
  77  * Arguments:   @buf *b@ = pointer to a buffer block
  78  *              @ec *p@ = where to put the point
  79  *
  80  * Returns:     Zero if it worked, nonzero if it failed.
  81  *
  82  * Use:         Gets a multiprecision integer from a buffer.  The point must
  83  *              be initialized.
  84  */
  85
  86 extern int buf_getec(buf */*b*/, ec */*p*/);
  87
  88 /* --- @buf_putec@ --- *
  89  *
  90  * Arguments:   @buf *b@ = pointer to a buffer block
  91  *              @ec *p@ = an elliptic curve point
  92  *
  93  * Returns:     Zero if it worked, nonzero if there wasn't enough space.
  94  *
  95  * Use:         Puts an elliptic curve point to a buffer.
  96  */
  97
  98 extern int buf_putec(buf */*b*/, ec */*p*/);
  99
 100 /*----- That's all, folks -------------------------------------------------*/
 101
 102 #ifdef __cplusplus
 103   }
 104 #endif
 105
 106 #endif