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Make the bignum fuzzer reproducible

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Reviewed-by: Rich Salz <rsalz@openssl.org>
GH: #2182
This commit is contained in:
Kurt Roeckx 2017-01-05 20:13:10 +01:00
parent f8d4b3beda
commit 13799455cb
1 changed files with 23 additions and 18 deletions
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41
fuzz/bignum.c
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@ -15,23 +15,14 @@
#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)
{
}