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authorMoonchild <mcwerewolf@gmail.com>2018-02-06 12:02:47 +0100
committerGitHub <noreply@github.com>2018-02-06 12:02:47 +0100
commit389c60da5e01761f4a11ef539ffa26e4c1b17875 (patch)
treec6033924a0de9be1ab140596e305898c651bf57e /security/nss/fuzz/mpi_expmod_target.cc
parent7c9b585349c985df0cf6ace83da5dadba8b5c677 (diff)
parentf017b749ea9f1586d2308504553d40bf4cc5439d (diff)
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Merge pull request #13 from MoonchildProductions/ported-upstream
Ported upstream
Diffstat (limited to 'security/nss/fuzz/mpi_expmod_target.cc')
-rw-r--r--security/nss/fuzz/mpi_expmod_target.cc27
1 files changed, 27 insertions, 0 deletions
diff --git a/security/nss/fuzz/mpi_expmod_target.cc b/security/nss/fuzz/mpi_expmod_target.cc
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+++ b/security/nss/fuzz/mpi_expmod_target.cc
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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/. */
+
+/*
+ * 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);
+ 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
+}