Commit 13799455 authored by Kurt Roeckx's avatar Kurt Roeckx
Browse files

Make the bignum fuzzer reproducible 



Reviewed-by: default avatarRich Salz <rsalz@openssl.org>
GH: #2182
parent f8d4b3be

fuzz/bignum.c

+23 −18
Original line number Diff line number Diff line
@@ -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)

{

}