X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/aa1082f28ddd05f3b946ca1a9c6bfaa17d18aca5..ea932d59b3071ce00f9e510aad014ad64a3dc48c:/grand.h

diff --git a/grand.h b/grand.h
index 04925bb..49ac3b4 100644
--- a/grand.h
+++ b/grand.h
@@ -1,13 +1,13 @@
 /* -*-c-*-
  *
- * $Id: grand.h,v 1.1 1999/12/10 23:16:01 mdw Exp $
+ * $Id: grand.h,v 1.5 2004/04/08 01:36:15 mdw Exp $
  *
  * Generic interface to random number generators
  *
  * (c) 1999 Straylight/Edgeware
  */
 
-/*----- Licensing notice --------------------------------------------------* 
+/*----- Licensing notice --------------------------------------------------*
  *
  * This file is part of Catacomb.
  *
@@ -15,26 +15,18 @@
  * 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: grand.h,v $
- * Revision 1.1  1999/12/10 23:16:01  mdw
- * Generic interface.
- *
- */
-
 #ifndef CATACOMB_GRAND_H
 #define CATACOMB_GRAND_H
 
@@ -60,6 +52,7 @@ typedef struct grand_ops {
   /* --- Various important properties --- */
 
   const char *name;			/* Generator's name */
+  unsigned f;				/* Various flags */
   uint32 max;				/* Maximum raw output */
 
   /* --- Maintenance methods --- */
@@ -75,12 +68,22 @@ typedef struct grand_ops {
    */
 
   uint32 (*raw)(grand */*r*/);		/* Uniform over %$[0, max)$% */
-  octet (*byte)(grand */*r*/);		/* Uniform over %$[0, 256)%$ */
+  octet (*byte)(grand */*r*/);		/* Uniform over %$[0, 256)$% */
   uint32 (*word)(grand */*r*/);		/* Uniform over %$[0, 2^{32})$% */
   uint32 (*range)(grand */*r*/, uint32 /*l*/); /* Uniform over %$[0, l)$% */
   void (*fill)(grand */*r*/, void */*p*/, size_t /*sz*/); /* Fill buffer */
 } grand_ops;
 
+#define GR_DESTROY(r)		(r)->ops->destroy((r))
+#define GR_RAW(r)		(r)->ops->raw((r))
+#define GR_WORD(r)		(r)->ops->word((r))
+#define GR_RANGE(r, l)		(r)->ops->range((r), (l))
+#define GR_FILL(r, p, sz)	(r)->ops->fill((r), (p), (sz))
+
+/* --- Flag types --- */
+
+#define GRAND_CRYPTO 1u			/* Cryptographically strong */
+
 /* --- Operation types --- */
 
 enum {
@@ -95,11 +98,11 @@ enum {
   GRAND_SEEDUINT32,			/* @uint32 i@ */
   GRAND_SEEDBLOCK,			/* @const void *p, size_t sz@ */
   GRAND_SEEDMP,				/* @mp *m@ */
-  GRAND_SEEDRAND,			/* @grand *g@ */
+  GRAND_SEEDRAND			/* @grand *g@ */
 
   /* --- Generator-specific operations --- */
 
-  GRAND_SPECIFIC = 256u
+#define GRAND_SPECIFIC(ch) ((unsigned)(ch) << 8)
 };
 
 #define GRAND_BADOP assert(((void)"bad grand_misc op", 0))