mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-23 02:05:42 +00:00
13f706ca4e
MozReview-Commit-ID: 9F66BeXNp3a --HG-- extra : rebase_source : aac70379cd6e09112bec2af693eda051eba8d84c
37 lines
1.1 KiB
C++
37 lines
1.1 KiB
C++
/* 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/. */
|
|
|
|
/*
|
|
* This target fuzzes NSS mpi against openssl bignum.
|
|
* It therefore requires openssl to be installed.
|
|
*/
|
|
|
|
#include "mpi_helper.h"
|
|
|
|
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
|
|
// We require at least size 3 to get two integers from Data.
|
|
if (size < 3) {
|
|
return 0;
|
|
}
|
|
INIT_FOUR_NUMBERS
|
|
|
|
auto modulus = get_modulus(data, size, ctx);
|
|
// Compare with OpenSSL exp mod
|
|
m1 = &std::get<1>(modulus);
|
|
// The exponent b (B) can get really big. Make it smaller if necessary.
|
|
if (MP_USED(&b) > 100) {
|
|
size_t shift = (MP_USED(&b) - 100) * MP_DIGIT_BIT;
|
|
mp_div_2d(&b, shift, &b, nullptr);
|
|
BN_rshift(B, B, shift);
|
|
}
|
|
check_equal(A, &a, max_size);
|
|
check_equal(B, &b, max_size);
|
|
check_equal(std::get<0>(modulus), m1, 3 * max_size);
|
|
assert(mp_exptmod(&a, &b, m1, &c) == MP_OKAY);
|
|
(void)BN_mod_exp(C, A, B, std::get<0>(modulus), ctx);
|
|
check_equal(C, &c, 2 * max_size);
|
|
|
|
CLEANUP_AND_RETURN
|
|
}
|