From: Kurt Roeckx <kurt@roeckx.be>
Date: Thu, 5 Jan 2017 18:59:14 +0000 (+0100)
Subject: Make rand_add predictable when fuzzing
X-Git-Tag: OpenSSL_1_1_1-pre1~2791
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=68f4237c21bad35efb2b51c816a1d6c2f44ad45e;p=oweals%2Fopenssl.git

Make rand_add predictable when fuzzing

Reviewed-by: Rich Salz <rsalz@openssl.org>
GH: #2182
---

diff --git a/crypto/rand/md_rand.c b/crypto/rand/md_rand.c
index 88820bbb91..78da14a8e6 100644
--- a/crypto/rand/md_rand.c
+++ b/crypto/rand/md_rand.c
@@ -126,6 +126,11 @@ static int rand_add(const void *buf, int num, double add)
     if (!num)
         return 1;
 
+#ifdef PREDICT
+    if (rand_predictable)
+        return 1;
+#endif
+
     /*
      * (Based on the rand(3) manpage)
      *