1 // Copyright (c) 2020 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #include <crypto/hkdf_sha256_32.h>
6 #include <test/fuzz/FuzzedDataProvider.h>
7 #include <test/fuzz/fuzz.h>
8 #include <test/fuzz/util.h>
9 
10 #include <cstdint>
11 #include <string>
12 #include <vector>
13 
test_one_input(const std::vector<uint8_t> & buffer)14 void test_one_input(const std::vector<uint8_t>& buffer)
15 {
16     FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
17 
18     const std::vector<uint8_t> initial_key_material = ConsumeRandomLengthByteVector(fuzzed_data_provider);
19 
20     CHKDF_HMAC_SHA256_L32 hkdf_hmac_sha256_l32(initial_key_material.data(), initial_key_material.size(), fuzzed_data_provider.ConsumeRandomLengthString(1024));
21     while (fuzzed_data_provider.ConsumeBool()) {
22         std::vector<uint8_t> out(32);
23         hkdf_hmac_sha256_l32.Expand32(fuzzed_data_provider.ConsumeRandomLengthString(128), out.data());
24     }
25 }
26