Make the random number generator predictable when fuzzing.

[openssl.git] / crypto / rand / md_rand.c

diff --git a/crypto/rand/md_rand.c b/crypto/rand/md_rand.c
index 7924478e9e8973654938941c4fa44775a24adf56..0cf6e90834820f129ec29b7f6806e17df09b5c53 100644 (file)
--- a/crypto/rand/md_rand.c
+++ b/crypto/rand/md_rand.c
@@ -33,7 +33,7 @@
 # include <openssl/fips.h>
 #endif
 
 # include <openssl/fips.h>
 #endif
 

-#ifdef BN_DEBUG
+#if defined(BN_DEBUG) || defined(FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION)

 # define PREDICT
 #endif
 
 # define PREDICT
 #endif
 


@@ -89,6 +89,7 @@ static RAND_METHOD rand_meth = {
 
 DEFINE_RUN_ONCE_STATIC(do_rand_lock_init)
 {
 
 DEFINE_RUN_ONCE_STATIC(do_rand_lock_init)
 {

+    OPENSSL_init_crypto(0, NULL);

     rand_lock = CRYPTO_THREAD_lock_new();
     rand_tmp_lock = CRYPTO_THREAD_lock_new();
     return rand_lock != NULL && rand_tmp_lock != NULL;
     rand_lock = CRYPTO_THREAD_lock_new();
     rand_tmp_lock = CRYPTO_THREAD_lock_new();
     return rand_lock != NULL && rand_tmp_lock != NULL;


@@ -306,7 +307,7 @@ static int rand_bytes(unsigned char *buf, int num, int pseudo)
 
 #ifdef PREDICT
     if (rand_predictable) {
 
 #ifdef PREDICT
     if (rand_predictable) {

-        static unsigned char val = 0;
+        unsigned char val = 0;

 
         for (i = 0; i < num; i++)
             buf[i] = val++;
 
         for (i = 0; i < num; i++)
             buf[i] = val++;