Bitcoin Core  22.99.0
P2P Digital Currency
crypto_hkdf_hmac_sha256_l32.cpp
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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 
7 #include <test/fuzz/fuzz.h>
8 #include <test/fuzz/util.h>
9 
10 #include <cstdint>
11 #include <string>
12 #include <vector>
13 
14 FUZZ_TARGET(crypto_hkdf_hmac_sha256_l32)
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 }
CHKDF_HMAC_SHA256_L32::Expand32
void Expand32(const std::string &info, unsigned char hash[OUTPUT_SIZE])
Definition: hkdf_sha256_32.cpp:15
util.h
FUZZ_TARGET
FUZZ_TARGET(crypto_hkdf_hmac_sha256_l32)
Definition: crypto_hkdf_hmac_sha256_l32.cpp:14
FuzzedDataProvider.h
ConsumeRandomLengthByteVector
std::vector< uint8_t > ConsumeRandomLengthByteVector(FuzzedDataProvider &fuzzed_data_provider, const std::optional< size_t > &max_length=std::nullopt) noexcept
Definition: util.h:61
fuzz.h
FuzzedDataProvider
Definition: FuzzedDataProvider.h:31
CHKDF_HMAC_SHA256_L32
A rfc5869 HKDF implementation with HMAC_SHA256 and fixed key output length of 32 bytes (L=32)
Definition: hkdf_sha256_32.h:14
hkdf_sha256_32.h