1 // Copyright 2019 The Chromium Authors
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // https://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include <assert.h>
16 #include <stddef.h>
17 #include <stdint.h>
18
19 #include "../pki/crl.h"
20 #include "../pki/input.h"
21 #include <openssl/sha2.h>
22
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)23 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
24 const bssl::der::Input input_der(data, size);
25
26 uint8_t data_hash[SHA256_DIGEST_LENGTH];
27 SHA256(data, size, data_hash);
28 const bssl::CrlVersion crl_version =
29 (data_hash[0] % 2) ? bssl::CrlVersion::V2 : bssl::CrlVersion::V1;
30 const size_t serial_len = data_hash[1] % (sizeof(data_hash) - 2);
31 assert(serial_len + 2 < sizeof(data_hash));
32 const bssl::der::Input cert_serial(
33 reinterpret_cast<const uint8_t*>(data_hash + 2), serial_len);
34
35 bssl::GetCRLStatusForCert(cert_serial, crl_version,
36 std::make_optional(input_der));
37
38 return 0;
39 }
40