X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/aa1082f28ddd05f3b946ca1a9c6bfaa17d18aca5..578a86d91941a0f722b87973d88e84ec2cf9a608:/grand.h

diff --git a/grand.h b/grand.h
index 04925bb..0446b2b 100644
--- a/grand.h
+++ b/grand.h
@@ -1,6 +1,6 @@
 /* -*-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
  *
@@ -27,14 +27,6 @@
  * 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))