Make the bignum fuzzer reproducible
GH:
#include <stdio.h>
#include <openssl/bn.h>
+#include <openssl/err.h>
#include "fuzzer.h"
-static BN_CTX *ctx;
-static BIGNUM *b1;
-static BIGNUM *b2;
-static BIGNUM *b3;
-static BIGNUM *b4;
-static BIGNUM *b5;
int FuzzerInitialize(int *argc, char ***argv)
{
- b1 = BN_new();
- b2 = BN_new();
- b3 = BN_new();
- b4 = BN_new();
- b5 = BN_new();
- ctx = BN_CTX_new();
+ OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
+ ERR_get_state();
return 1;
}
@@ -41,6 +32,19 @@ int FuzzerTestOneInput(const uint8_t *buf, size_t len)
int success = 0;
size_t l1 = 0, l2 = 0, l3 = 0;
int s1 = 0, s2 = 0, s3 = 0;
+ BN_CTX *ctx;
+ BIGNUM *b1;
+ BIGNUM *b2;
+ BIGNUM *b3;
+ BIGNUM *b4;
+ BIGNUM *b5;
+
+ b1 = BN_new();
+ b2 = BN_new();
+ b3 = BN_new();
+ b4 = BN_new();
+ b5 = BN_new();
+ ctx = BN_CTX_new();
/* Divide the input into three parts, using the values of the first two
* bytes to choose lengths, which generate b1, b2 and b3. Use three bits
@@ -91,16 +95,17 @@ int FuzzerTestOneInput(const uint8_t *buf, size_t len)
done:
OPENSSL_assert(success);
-
- return 0;
-}
-
-void FuzzerCleanup(void)
-{
BN_free(b1);
BN_free(b2);
BN_free(b3);
BN_free(b4);
BN_free(b5);
BN_CTX_free(ctx);
+ ERR_clear_error();
+
+ return 0;
+}
+
+void FuzzerCleanup(void)
+{
}
