1  // Copyright (c) 2020-present 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>
 6  #include <test/fuzz/FuzzedDataProvider.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_aes256)
15  {
16      FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
17      const std::vector<uint8_t> key = ConsumeFixedLengthByteVector(fuzzed_data_provider, AES256_KEYSIZE);
18  
19      AES256Encrypt encrypt{key.data()};
20      AES256Decrypt decrypt{key.data()};
21  
22      LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
23          const std::vector<uint8_t> plaintext = ConsumeFixedLengthByteVector(fuzzed_data_provider, AES_BLOCKSIZE);
24          std::vector<uint8_t> ciphertext(AES_BLOCKSIZE);
25          encrypt.Encrypt(ciphertext.data(), plaintext.data());
26          std::vector<uint8_t> decrypted_plaintext(AES_BLOCKSIZE);
27          decrypt.Decrypt(decrypted_plaintext.data(), ciphertext.data());
28          assert(decrypted_plaintext == plaintext);
29      }
30  }