1  // Copyright (c) 2011-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 <util/strencodings.h>
 6  
 7  #include <boost/test/unit_test.hpp>
 8  
 9  #include <algorithm>
10  #include <string>
11  
12  using namespace std::literals;
13  
14  BOOST_AUTO_TEST_SUITE(base64_tests)
15  
16  BOOST_AUTO_TEST_CASE(base64_testvectors)
17  {
18      static const std::string vstrIn[]  = {"","f","fo","foo","foob","fooba","foobar"};
19      static const std::string vstrOut[] = {"","Zg==","Zm8=","Zm9v","Zm9vYg==","Zm9vYmE=","Zm9vYmFy"};
20      for (unsigned int i=0; i<std::size(vstrIn); i++)
21      {
22          std::string strEnc = EncodeBase64(vstrIn[i]);
23          BOOST_CHECK_EQUAL(strEnc, vstrOut[i]);
24          auto dec = DecodeBase64(strEnc);
25          BOOST_REQUIRE(dec);
26          BOOST_CHECK_MESSAGE(std::ranges::equal(*dec, vstrIn[i]), vstrOut[i]);
27      }
28  
29      {
30          const std::vector<uint8_t> in_u{0xff, 0x01, 0xff};
31          const std::vector<std::byte> in_b{std::byte{0xff}, std::byte{0x01}, std::byte{0xff}};
32          const std::string in_s{"\xff\x01\xff"};
33          const std::string out_exp{"/wH/"};
34          BOOST_CHECK_EQUAL(EncodeBase64(in_u), out_exp);
35          BOOST_CHECK_EQUAL(EncodeBase64(in_b), out_exp);
36          BOOST_CHECK_EQUAL(EncodeBase64(in_s), out_exp);
37      }
38  
39      BOOST_CHECK(DecodeBase64("nQB/pZw=")); // valid
40  
41      // Decoding strings with embedded NUL characters should fail
42      BOOST_CHECK(!DecodeBase64("invalid\0"sv)); // correct size, invalid due to \0
43      BOOST_CHECK(!DecodeBase64("nQB/pZw=\0invalid"sv));
44      BOOST_CHECK(!DecodeBase64("nQB/pZw=invalid\0"sv)); // invalid, padding only allowed at the end
45  }
46  
47  BOOST_AUTO_TEST_CASE(base64_padding)
48  {
49      // Is valid without padding
50      BOOST_CHECK_EQUAL(EncodeBase64("foobar"), "Zm9vYmFy");
51  
52      // Valid size
53      BOOST_CHECK(!DecodeBase64("===="));
54      BOOST_CHECK(!DecodeBase64("a==="));
55      BOOST_CHECK( DecodeBase64("YQ=="));
56      BOOST_CHECK( DecodeBase64("YWE="));
57  }
58  
59  BOOST_AUTO_TEST_SUITE_END()