* yarrow.h (struct yarrow_key_event_ctx): New struct.

Rev: src/nettle/ChangeLog:1.36
Rev: src/nettle/yarrow.h:1.5

ChangeLog

 2001-10-08  Niels Mller  <nisse@cuckoo.hack.org>
 
+	* yarrow.h (struct yarrow_key_event_ctx): New struct.
+
 	* yarrow256.c (yarrow_fast_reseed): Generate two block of output
 	using the old key and feed into the pool.
 

yarrow.h

@@ -103,5 +103,20 @@ yarrow256_random(struct yarrow256_ctx *ctx, unsigned length, uint8_t *dst);
 int
 yarrow256_seeded(struct yarrow256_ctx *ctx);
 
+/* Key event estimator */
+struct yarrow_key_event_ctx
+{
+  /* Counter for initial priming of the state */
+  unsigned index;
+  unsigned chars[16];
+  unsigned previous;
+};
+
+void
+yarrow_key_event_init(struct yarrow_key_event_ctx *ctx);
+
+unsigned
+yarrow_key_event_estimate(struct yarrow_key_event_ctx *ctx,
+			  unsigned key, unsigned time);
   
 #endif /* NETTLE_YARROW_COMPAT_H_INCLUDED */