Bitcoin Core 28.99.0
P2P Digital Currency
crypto_aes256cbc.cpp
Go to the documentation of this file.
1// Copyright (c) 2020-2021 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
14FUZZ_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 LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
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}
static const int AES256_KEYSIZE
Definition: aes.h:15
static const int AES_BLOCKSIZE
Definition: aes.h:14
FUZZ_TARGET(crypto_aes256cbc)
#define LIMITED_WHILE(condition, limit)
Can be used to limit a theoretically unbounded loop.
Definition: fuzz.h:22
std::vector< B > 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:256
std::vector< B > ConsumeRandomLengthByteVector(FuzzedDataProvider &fuzzed_data_provider, const std::optional< size_t > &max_length=std::nullopt) noexcept
Definition: util.h:57
assert(!tx.IsCoinBase())