From: ryndia <68096721+ryndia@users.noreply.github.com>
Date: Wed, 7 Sep 2022 16:16:20 +0000 (+0400)
Subject: Update arc4random.c
X-Git-Tag: release-1.17.0rc1~22^2^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F749%2Fhead;p=thirdparty%2Funbound.git

Update arc4random.c
---

diff --git a/compat/arc4random.c b/compat/arc4random.c
index b536d3143..ae342d3a4 100644
--- a/compat/arc4random.c
+++ b/compat/arc4random.c
@@ -22,7 +22,7 @@
 /*
  * ChaCha based random number generator for OpenBSD.
  */
-
+#define REKEY_BASE (1024*1024) //base 2
 #include <fcntl.h>
 #include <limits.h>
 #include <signal.h>
@@ -179,7 +179,7 @@ static void
 _rs_stir(void)
 {
 	u_char rnd[KEYSZ + IVSZ];
-
+	uint32_t rekey_fuzz = 0;
 	if (getentropy(rnd, sizeof rnd) == -1) {
 		if(errno != ENOSYS ||
 			fallback_getentropy_urandom(rnd, sizeof rnd) == -1) {
@@ -201,7 +201,9 @@ _rs_stir(void)
 	rs->rs_have = 0;
 	memset(rsx->rs_buf, 0, sizeof(rsx->rs_buf));
 
-	rs->rs_count = 1600000;
+	/*rs->rs_count = 1600000;*/
+	chacha_encrypt_bytes(&rsx->rs_chacha, (uint8_t *)&rekey_fuzz,(uint8_t *)&rekey_fuzz, sizeof(rekey_fuzz));
+        rs->rs_count = REKEY_BASE + (rekey_fuzz % REKEY_BASE);
 }
 
 static inline void