From 124f90e3dc93d24f24d2bc11c7afaa9fdbbf5fb7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Love=20H=C3=B6rnquist=20=C3=85strand?= <lha@kth.se>
Date: Wed, 20 Jun 2007 05:08:58 +0000
Subject: [PATCH] Reseed the random generator now and then from external
 sources.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@21196 ec53bebd-3082-4978-b11e-865c3cabbd6b
---
 lib/hcrypto/rand-fortuna.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/hcrypto/rand-fortuna.c b/lib/hcrypto/rand-fortuna.c
index 645ceeba4..de83b3cce 100644
--- a/lib/hcrypto/rand-fortuna.c
+++ b/lib/hcrypto/rand-fortuna.c
@@ -427,6 +427,8 @@ extract_data(FState * st, unsigned count, unsigned char *dst)
 static FState	main_state;
 static int	init_done;
 static int	have_entropy;
+#define FORTUNA_RESEED_BYTE	10000
+static unsigned	resend_bytes;
 
 /*
  * Try our best to do an inital seed
@@ -546,6 +548,11 @@ fortuna_bytes(unsigned char *outdata, int size)
 {
     if (!fortuna_init())
 	return 0;
+    resend_bytes += size;
+    if (resend_bytes > FORTUNA_RESEED_BYTE || resend_bytes < size) {
+	resend_bytes = 0;
+	fortuna_reseed();
+    }
     extract_data(&main_state, size, outdata);
     return 1;
 }