X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/21c9a0ff462ba8cb1769b8ceb4277c8d99f56bf8..8dd8c294e9f330eb6b975c2b96cf9bbfcd087e5e:/rand.h

diff --git a/rand.h b/rand.h
index 2f23440..566f927 100644
--- a/rand.h
+++ b/rand.h
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: rand.h,v 1.5 1999/12/13 15:34:15 mdw Exp $
+ * $Id: rand.h,v 1.6 2000/06/17 11:53:38 mdw Exp $
  *
  * Secure random number generator
  *
@@ -30,6 +30,10 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: rand.h,v $
+ * Revision 1.6  2000/06/17 11:53:38  mdw
+ * Deprecate `rand_getgood'.  Provide a new interface to ensure that a pool
+ * is well seeded.
+ *
  * Revision 1.5  1999/12/13 15:34:15  mdw
  * Fix a typo.
  *
@@ -172,6 +176,21 @@ extern void rand_init(rand_pool */*r*/);
 
 extern void rand_noisesrc(rand_pool */*r*/, const rand_source */*s*/);
 
+/* --- @rand_seed@ --- *
+ *
+ * Arguments:	@rand_pool *r@ = pointer to a randomness pool
+ *		@unsigned bits@ = number of bits to ensure
+ *
+ * Returns:	---
+ *
+ * Use:		Ensures that there are at least @bits@ good bits of entropy
+ *		in the pool.  It is recommended that you call this after
+ *		initializing a new pool.  Requesting @bits > RAND_IBITS@ is
+ *		doomed to failure (and is an error).
+ */
+
+extern void rand_seed(rand_pool */*r*/, unsigned /*bits*/);
+
 /* --- @rand_key@ --- *
  *
  * Arguments:	@rand_pool *r@ = pointer to a randomness pool
@@ -287,7 +306,8 @@ enum {
   RAND_GATE = GRAND_SPECIFIC,		/* No args */
   RAND_STRETCH,				/* No args */
   RAND_KEY,				/* @const void *k, size_t sz@ */
-  RAND_NOISESRC				/* @const rand_source *s@ */
+  RAND_NOISESRC,			/* @const rand_source *s@ */
+  RAND_SEED,				/* @unsigned bits@ */
 };
 
 /* --- Default random number generator --- */