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   1 /* -*-c-*-
   2  *
   3  * $Id: gcipher.h,v 1.1 1999/12/10 23:16:01 mdw Exp $
   4  *
   5  * Generic symmetric cipher interface
   6  *
   7  * (c) 1999 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 /*----- Revision history --------------------------------------------------*
  31  *
  32  * $Log: gcipher.h,v $
  33  * Revision 1.1  1999/12/10 23:16:01  mdw
  34  * Generic interface.
  35  *
  36  */
  37
  38 #ifndef CATACOMB_GCIPHER_H
  39 #define CATACOMB_GCIPHER_H
  40
  41 #ifdef __cplusplus
  42   extern "C" {
  43 #endif
  44
  45 /*----- Header files ------------------------------------------------------*/
  46
  47 #include <stddef.h>
  48
  49 /*----- Generic symmetric cipher interface --------------------------------*/
  50
  51 typedef struct gccipher_base {
  52   const char *name;                     /* Cipher name */
  53   size_t keysz;                         /* Preferred key size in bytes */
  54   size_t blksz;                         /* Block size or zero if none */
  55 } gccipher_base;
  56
  57 typedef struct gcipher {
  58   const struct gcipher_ops *ops;        /* Pointer to cipher operations */
  59 } gcipher;
  60
  61 typedef struct gcipher_ops {
  62   const struct gccipher_base *b;        /* Pointer to basic information */
  63   void (*encrypt)(gcipher */*c*/, const void */*s*/,
  64                   void */*t*/, size_t /*sz*/);
  65   void (*decrypt)(gcipher */*c*/, const void */*s*/,
  66                   void */*t*/, size_t /*sz*/);
  67   void (*destroy)(gcipher */*c*/);
  68   void (*setiv)(gcipher */*c*/, const void */*iv*/);
  69   void (*bdry)(gcipher */*c*/);
  70 } gcipher_ops;
  71
  72 typedef struct gccipher {
  73   gccipher_base b;
  74   gcipher *(*init)(const void */*k*/, size_t /*sz*/);
  75 } gccipher;
  76
  77 /*----- That's all, folks -------------------------------------------------*/
  78
  79 #ifdef __cplusplus
  80   }
  81 #endif
  82
  83 #endif