Make the predictable numbers start from 1

There is code that retries calling RAND_bytes() until it gets something
other than 0, which just hangs if we always return 0.

Reviewed-by: Rich Salz <rsalz@openssl.org>
GH: #2041

diff --git a/crypto/rand/md_rand.c b/crypto/rand/md_rand.c
index 0cf6e90834820f129ec29b7f6806e17df09b5c53..88820bbb917674e18644d308d862c6ec30d612e2 100644 (file)
--- a/crypto/rand/md_rand.c
+++ b/crypto/rand/md_rand.c
@@ -307,7 +307,7 @@ static int rand_bytes(unsigned char *buf, int num, int pseudo)
 
 #ifdef PREDICT
     if (rand_predictable) {
-        unsigned char val = 0;
+        unsigned char val = 1;
 
         for (i = 0; i < num; i++)
             buf[i] = val++;