Bitcoin Core  22.99.0
P2P Digital Currency
crypto_aes256cbc.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 
5 #include <crypto/aes.h>
7 #include <test/fuzz/fuzz.h>
8 #include <test/fuzz/util.h>
9 
10 #include <cassert>
11 #include <cstdint>
12 #include <vector>
13 
14 FUZZ_TARGET(crypto_aes256cbc)
15 {
16  FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
17  const std::vector<uint8_t> key = ConsumeFixedLengthByteVector(fuzzed_data_provider, AES256_KEYSIZE);
18  const std::vector<uint8_t> iv = ConsumeFixedLengthByteVector(fuzzed_data_provider, AES_BLOCKSIZE);
19  const bool pad = fuzzed_data_provider.ConsumeBool();
20 
21  AES256CBCEncrypt encrypt{key.data(), iv.data(), pad};
22  AES256CBCDecrypt decrypt{key.data(), iv.data(), pad};
23 
24  while (fuzzed_data_provider.ConsumeBool()) {
25  const std::vector<uint8_t> plaintext = ConsumeRandomLengthByteVector(fuzzed_data_provider);
26  std::vector<uint8_t> ciphertext(plaintext.size() + AES_BLOCKSIZE);
27  const int encrypt_ret = encrypt.Encrypt(plaintext.data(), plaintext.size(), ciphertext.data());
28  ciphertext.resize(encrypt_ret);
29  std::vector<uint8_t> decrypted_plaintext(ciphertext.size());
30  const int decrypt_ret = decrypt.Decrypt(ciphertext.data(), ciphertext.size(), decrypted_plaintext.data());
31  decrypted_plaintext.resize(decrypt_ret);
32  assert(decrypted_plaintext == plaintext || (!pad && plaintext.size() % AES_BLOCKSIZE != 0 && encrypt_ret == 0 && decrypt_ret == 0));
33  }
34 }
assert
assert(!tx.IsCoinBase())
util.h
FUZZ_TARGET
FUZZ_TARGET(crypto_aes256cbc)
Definition: crypto_aes256cbc.cpp:14
AES256_KEYSIZE
static const int AES256_KEYSIZE
Definition: aes.h:15
aes.h
AES256CBCDecrypt
Definition: aes.h:54
FuzzedDataProvider.h
AES256CBCEncrypt
Definition: aes.h:41
ConsumeRandomLengthByteVector
std::vector< uint8_t > ConsumeRandomLengthByteVector(FuzzedDataProvider &fuzzed_data_provider, const std::optional< size_t > &max_length=std::nullopt) noexcept
Definition: util.h:61
AES_BLOCKSIZE
static const int AES_BLOCKSIZE
Definition: aes.h:14
fuzz.h
FuzzedDataProvider
Definition: FuzzedDataProvider.h:31
ConsumeFixedLengthByteVector
std::vector< uint8_t > ConsumeFixedLengthByteVector(FuzzedDataProvider &fuzzed_data_provider, const size_t length) noexcept
Returns a byte vector of specified size regardless of the number of remaining bytes available from th...
Definition: util.h:230