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/common.h>
 6  #include <test/fuzz/FuzzedDataProvider.h>
 7  #include <test/fuzz/fuzz.h>
 8  #include <test/fuzz/util.h>
 9  
10  #include <array>
11  #include <cassert>
12  #include <cstdint>
13  #include <cstring>
14  #include <vector>
15  
16  FUZZ_TARGET(crypto_common)
17  {
18      FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
19      const uint16_t random_u16 = fuzzed_data_provider.ConsumeIntegral<uint16_t>();
20      const uint32_t random_u32 = fuzzed_data_provider.ConsumeIntegral<uint32_t>();
21      const uint64_t random_u64 = fuzzed_data_provider.ConsumeIntegral<uint64_t>();
22      const std::vector<uint8_t> random_bytes_2 = ConsumeFixedLengthByteVector(fuzzed_data_provider, 2);
23      const std::vector<uint8_t> random_bytes_4 = ConsumeFixedLengthByteVector(fuzzed_data_provider, 4);
24      const std::vector<uint8_t> random_bytes_8 = ConsumeFixedLengthByteVector(fuzzed_data_provider, 8);
25  
26      std::array<uint8_t, 2> writele16_arr;
27      WriteLE16(writele16_arr.data(), random_u16);
28      assert(ReadLE16(writele16_arr.data()) == random_u16);
29  
30      std::array<uint8_t, 4> writele32_arr;
31      WriteLE32(writele32_arr.data(), random_u32);
32      assert(ReadLE32(writele32_arr.data()) == random_u32);
33  
34      std::array<uint8_t, 8> writele64_arr;
35      WriteLE64(writele64_arr.data(), random_u64);
36      assert(ReadLE64(writele64_arr.data()) == random_u64);
37  
38      std::array<uint8_t, 2> writebe16_arr;
39      WriteBE16(writebe16_arr.data(), random_u16);
40      assert(ReadBE16(writebe16_arr.data()) == random_u16);
41  
42      std::array<uint8_t, 4> writebe32_arr;
43      WriteBE32(writebe32_arr.data(), random_u32);
44      assert(ReadBE32(writebe32_arr.data()) == random_u32);
45  
46      std::array<uint8_t, 8> writebe64_arr;
47      WriteBE64(writebe64_arr.data(), random_u64);
48      assert(ReadBE64(writebe64_arr.data()) == random_u64);
49  
50      const uint16_t readle16_result = ReadLE16(random_bytes_2.data());
51      std::array<uint8_t, 2> readle16_arr;
52      WriteLE16(readle16_arr.data(), readle16_result);
53      assert(std::memcmp(random_bytes_2.data(), readle16_arr.data(), 2) == 0);
54  
55      const uint32_t readle32_result = ReadLE32(random_bytes_4.data());
56      std::array<uint8_t, 4> readle32_arr;
57      WriteLE32(readle32_arr.data(), readle32_result);
58      assert(std::memcmp(random_bytes_4.data(), readle32_arr.data(), 4) == 0);
59  
60      const uint64_t readle64_result = ReadLE64(random_bytes_8.data());
61      std::array<uint8_t, 8> readle64_arr;
62      WriteLE64(readle64_arr.data(), readle64_result);
63      assert(std::memcmp(random_bytes_8.data(), readle64_arr.data(), 8) == 0);
64  
65      const uint32_t readbe32_result = ReadBE32(random_bytes_4.data());
66      std::array<uint8_t, 4> readbe32_arr;
67      WriteBE32(readbe32_arr.data(), readbe32_result);
68      assert(std::memcmp(random_bytes_4.data(), readbe32_arr.data(), 4) == 0);
69  
70      const uint64_t readbe64_result = ReadBE64(random_bytes_8.data());
71      std::array<uint8_t, 8> readbe64_arr;
72      WriteBE64(readbe64_arr.data(), readbe64_result);
73      assert(std::memcmp(random_bytes_8.data(), readbe64_arr.data(), 8) == 0);
74  }