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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* Helper functions for MPI fuzzing targets. */
#ifndef mpi_helper_h__
#define mpi_helper_h__
#include <iostream>
#include <string>
#include <tuple>
#include <vector>
#include "hasht.h"
#include "mpi.h"
#include <openssl/bn.h>
void check_equal(BIGNUM *b, mp_int *m, size_t max_size);
void parse_input(const uint8_t *data, size_t size, BIGNUM *A, BIGNUM *B,
mp_int *a, mp_int *b);
void parse_input(const uint8_t *data, size_t size, BIGNUM *A, mp_int *a);
std::tuple<BIGNUM *, mp_int> get_modulus(const uint8_t *data, size_t size,
BN_CTX *ctx);
void print_bn(std::string label, BIGNUM *x);
// Initialise MPI and BN variables
// XXX: Also silence unused variable warnings for R.
#define INIT_FOUR_NUMBERS \
mp_int a, b, c, r; \
mp_int *m1 = nullptr; \
BN_CTX *ctx = BN_CTX_new(); \
BN_CTX_start(ctx); \
BIGNUM *A = BN_CTX_get(ctx); \
BIGNUM *B = BN_CTX_get(ctx); \
BIGNUM *C = BN_CTX_get(ctx); \
BIGNUM *R = BN_CTX_get(ctx); \
assert(mp_init(&a) == MP_OKAY); \
assert(mp_init(&b) == MP_OKAY); \
assert(mp_init(&c) == MP_OKAY); \
assert(mp_init(&r) == MP_OKAY); \
size_t max_size = 2 * size + 1; \
parse_input(data, size, A, B, &a, &b); \
do { \
(void)(R); \
} while (0);
// Initialise MPI and BN variables
// XXX: Also silence unused variable warnings for B.
#define INIT_THREE_NUMBERS \
mp_int a, b, c; \
BN_CTX *ctx = BN_CTX_new(); \
BN_CTX_start(ctx); \
BIGNUM *A = BN_CTX_get(ctx); \
BIGNUM *B = BN_CTX_get(ctx); \
BIGNUM *C = BN_CTX_get(ctx); \
assert(mp_init(&a) == MP_OKAY); \
assert(mp_init(&b) == MP_OKAY); \
assert(mp_init(&c) == MP_OKAY); \
size_t max_size = 4 * size + 1; \
parse_input(data, size, A, &a); \
do { \
(void)(B); \
} while (0);
#define CLEANUP_AND_RETURN \
mp_clear(&a); \
mp_clear(&b); \
mp_clear(&c); \
mp_clear(&r); \
if (m1) { \
mp_clear(m1); \
} \
BN_CTX_end(ctx); \
BN_CTX_free(ctx); \
return 0;
#define CLEANUP_AND_RETURN_THREE \
mp_clear(&a); \
mp_clear(&b); \
mp_clear(&c); \
BN_CTX_end(ctx); \
BN_CTX_free(ctx); \
return 0;
#endif // mpi_helper_h__
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