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       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>
       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 [ +  - ][ +  - ]:          6 : FUZZ_TARGET(crypto_aes256)
      15                 :            : {
      16                 :          0 :     FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
      17                 :          0 :     const std::vector<uint8_t> key = ConsumeFixedLengthByteVector(fuzzed_data_provider, AES256_KEYSIZE);
      18                 :            : 
      19         [ #  # ]:          0 :     AES256Encrypt encrypt{key.data()};
      20         [ #  # ]:          0 :     AES256Decrypt decrypt{key.data()};
      21                 :            : 
      22 [ #  # ][ #  # ]:          0 :     LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
                 [ #  # ]
      23                 :          0 :         const std::vector<uint8_t> plaintext = ConsumeFixedLengthByteVector(fuzzed_data_provider, AES_BLOCKSIZE);
      24         [ #  # ]:          0 :         std::vector<uint8_t> ciphertext(AES_BLOCKSIZE);
      25         [ #  # ]:          2 :         encrypt.Encrypt(ciphertext.data(), plaintext.data());
      26         [ #  # ]:          0 :         std::vector<uint8_t> decrypted_plaintext(AES_BLOCKSIZE);
      27         [ #  # ]:          0 :         decrypt.Decrypt(decrypted_plaintext.data(), ciphertext.data());
      28 [ #  # ][ #  # ]:          0 :         assert(decrypted_plaintext == plaintext);
      29                 :          0 :     }
      30                 :          0 : }