Bitcoin Core  27.99.0
P2P Digital Currency
script_sigcache.cpp
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1 // Copyright (c) 2020-2022 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 <chainparams.h>
6 #include <key.h>
7 #include <pubkey.h>
8 #include <script/sigcache.h>
10 #include <test/fuzz/fuzz.h>
11 #include <test/fuzz/util.h>
12 #include <test/util/setup_common.h>
13 
14 #include <cstdint>
15 #include <optional>
16 #include <string>
17 #include <vector>
18 
19 namespace {
20 const BasicTestingSetup* g_setup;
21 } // namespace
22 
24 {
25  static const auto testing_setup = MakeNoLogFileContext<>();
26  g_setup = testing_setup.get();
27 }
28 
30 {
31  FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
32 
33  const std::optional<CMutableTransaction> mutable_transaction = ConsumeDeserializable<CMutableTransaction>(fuzzed_data_provider, TX_WITH_WITNESS);
34  const CTransaction tx{mutable_transaction ? *mutable_transaction : CMutableTransaction{}};
35  const unsigned int n_in = fuzzed_data_provider.ConsumeIntegral<unsigned int>();
36  const CAmount amount = ConsumeMoney(fuzzed_data_provider);
37  const bool store = fuzzed_data_provider.ConsumeBool();
39  CachingTransactionSignatureChecker caching_transaction_signature_checker{mutable_transaction ? &tx : nullptr, n_in, amount, store, tx_data};
40  if (fuzzed_data_provider.ConsumeBool()) {
41  const auto random_bytes = fuzzed_data_provider.ConsumeBytes<unsigned char>(64);
42  const XOnlyPubKey pub_key(ConsumeUInt256(fuzzed_data_provider));
43  if (random_bytes.size() == 64) {
44  (void)caching_transaction_signature_checker.VerifySchnorrSignature(random_bytes, pub_key, ConsumeUInt256(fuzzed_data_provider));
45  }
46  } else {
47  const auto random_bytes = ConsumeRandomLengthByteVector(fuzzed_data_provider);
48  const auto pub_key = ConsumeDeserializable<CPubKey>(fuzzed_data_provider);
49  if (pub_key) {
50  if (!random_bytes.empty()) {
51  (void)caching_transaction_signature_checker.VerifyECDSASignature(random_bytes, *pub_key, ConsumeUInt256(fuzzed_data_provider));
52  }
53  }
54  }
55 }
int64_t CAmount
Amount in satoshis (Can be negative)
Definition: amount.h:12
The basic transaction that is broadcasted on the network and contained in blocks.
Definition: transaction.h:296
std::vector< T > ConsumeBytes(size_t num_bytes)
static constexpr TransactionSerParams TX_WITH_WITNESS
Definition: transaction.h:195
FUZZ_TARGET(script_sigcache,.init=initialize_script_sigcache)
void initialize_script_sigcache()
Basic testing setup.
Definition: setup_common.h:52
A mutable version of CTransaction.
Definition: transaction.h:378
CAmount ConsumeMoney(FuzzedDataProvider &fuzzed_data_provider, const std::optional< CAmount > &max) noexcept
Definition: util.cpp:29
uint256 ConsumeUInt256(FuzzedDataProvider &fuzzed_data_provider) noexcept
Definition: util.h:169
std::vector< B > ConsumeRandomLengthByteVector(FuzzedDataProvider &fuzzed_data_provider, const std::optional< size_t > &max_length=std::nullopt) noexcept
Definition: util.h:57