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93 lines
4.1 KiB
C++
93 lines
4.1 KiB
C++
// Copyright (c) 2022 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <test/fuzz/FuzzedDataProvider.h>
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#include <test/fuzz/fuzz.h>
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#include <test/fuzz/util.h>
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#include <test/util/setup_common.h>
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#include <wallet/crypter.h>
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namespace wallet {
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namespace {
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const TestingSetup* g_setup;
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void initialize_crypter()
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{
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static const auto testing_setup = MakeNoLogFileContext<const TestingSetup>();
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g_setup = testing_setup.get();
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}
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FUZZ_TARGET(crypter, .init = initialize_crypter)
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{
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FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
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bool good_data{true};
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CCrypter crypt;
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// These values are regularly updated within `CallOneOf`
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std::vector<unsigned char> cipher_text_ed;
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CKeyingMaterial plain_text_ed;
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const std::vector<unsigned char> random_key = ConsumeRandomLengthByteVector(fuzzed_data_provider);
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LIMITED_WHILE(good_data && fuzzed_data_provider.ConsumeBool(), 10000)
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{
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CallOneOf(
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fuzzed_data_provider,
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[&] {
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const std::string random_string = fuzzed_data_provider.ConsumeRandomLengthString();
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SecureString secure_string(random_string.begin(), random_string.end());
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const unsigned int derivation_method = fuzzed_data_provider.ConsumeBool() ? 0 : fuzzed_data_provider.ConsumeIntegral<unsigned int>();
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// Limiting the value of nRounds since it is otherwise uselessly expensive and causes a timeout when fuzzing.
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crypt.SetKeyFromPassphrase(/*strKeyData=*/secure_string,
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/*chSalt=*/ConsumeRandomLengthByteVector(fuzzed_data_provider),
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/*nRounds=*/fuzzed_data_provider.ConsumeIntegralInRange<unsigned int>(0, 25000),
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/*nDerivationMethod=*/derivation_method);
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},
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[&] {
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const std::vector<unsigned char> random_vector = ConsumeFixedLengthByteVector(fuzzed_data_provider, 32);
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const CKeyingMaterial new_key(random_vector.begin(), random_vector.end());
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const std::vector<unsigned char>& new_IV = ConsumeFixedLengthByteVector(fuzzed_data_provider, 16);
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crypt.SetKey(new_key, new_IV);
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},
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[&] {
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const std::vector<unsigned char> random_vector = ConsumeRandomLengthByteVector(fuzzed_data_provider);
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plain_text_ed = CKeyingMaterial(random_vector.begin(), random_vector.end());
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},
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[&] {
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cipher_text_ed = ConsumeRandomLengthByteVector(fuzzed_data_provider);
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},
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[&] {
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(void)crypt.Encrypt(plain_text_ed, cipher_text_ed);
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},
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[&] {
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(void)crypt.Decrypt(cipher_text_ed, plain_text_ed);
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},
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[&] {
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const CKeyingMaterial master_key(random_key.begin(), random_key.end());
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const uint256 iv = ConsumeUInt256(fuzzed_data_provider);
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EncryptSecret(master_key, plain_text_ed, iv, cipher_text_ed);
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},
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[&] {
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const CKeyingMaterial master_key(random_key.begin(), random_key.end());
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const uint256 iv = ConsumeUInt256(fuzzed_data_provider);
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DecryptSecret(master_key, cipher_text_ed, iv, plain_text_ed);
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},
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[&] {
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std::optional<CPubKey> random_pub_key = ConsumeDeserializable<CPubKey>(fuzzed_data_provider);
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if (!random_pub_key) {
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good_data = false;
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return;
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}
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const CPubKey pub_key = *random_pub_key;
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const CKeyingMaterial master_key(random_key.begin(), random_key.end());
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const std::vector<unsigned char> crypted_secret = ConsumeRandomLengthByteVector(fuzzed_data_provider);
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CKey key;
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DecryptKey(master_key, crypted_secret, pub_key, key);
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});
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}
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}
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} // namespace
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} // namespace wallet
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