/src/wallet/test/crypto_tests.cpp
C++ | 238 lines | 175 code | 52 blank | 11 comment | 57 complexity | f6c662dde464556dc6bb7daf13ef31c9 MD5 | raw file
- // Copyright (c) 2014 The Bitcoin Core developers
- // Distributed under the MIT software license, see the accompanying
- // file COPYING or http://www.opensource.org/licenses/mit-license.php.
- #include "test/test_random.h"
- #include "utilstrencodings.h"
- #include "test/test_bitcoin.h"
- #include "wallet/crypter.h"
- #include <vector>
- #include <boost/test/unit_test.hpp>
- #include <openssl/aes.h>
- #include <openssl/evp.h>
- BOOST_FIXTURE_TEST_SUITE(wallet_crypto, BasicTestingSetup)
- bool OldSetKeyFromPassphrase(const SecureString& strKeyData, const std::vector<unsigned char>& chSalt, const unsigned int nRounds, const unsigned int nDerivationMethod, unsigned char* chKey, unsigned char* chIV)
- {
- if (nRounds < 1 || chSalt.size() != WALLET_CRYPTO_SALT_SIZE)
- return false;
- int i = 0;
- if (nDerivationMethod == 0)
- i = EVP_BytesToKey(EVP_aes_256_cbc(), EVP_sha512(), &chSalt[0],
- (unsigned char *)&strKeyData[0], strKeyData.size(), nRounds, chKey, chIV);
- if (i != (int)WALLET_CRYPTO_KEY_SIZE)
- {
- memory_cleanse(chKey, sizeof(chKey));
- memory_cleanse(chIV, sizeof(chIV));
- return false;
- }
- return true;
- }
- bool OldEncrypt(const CKeyingMaterial& vchPlaintext, std::vector<unsigned char> &vchCiphertext, const unsigned char chKey[32], const unsigned char chIV[16])
- {
- // max ciphertext len for a n bytes of plaintext is
- // n + AES_BLOCK_SIZE - 1 bytes
- int nLen = vchPlaintext.size();
- int nCLen = nLen + AES_BLOCK_SIZE, nFLen = 0;
- vchCiphertext = std::vector<unsigned char> (nCLen);
- EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();
- if (!ctx) return false;
- bool fOk = true;
- EVP_CIPHER_CTX_init(ctx);
- if (fOk) fOk = EVP_EncryptInit_ex(ctx, EVP_aes_256_cbc(), NULL, chKey, chIV) != 0;
- if (fOk) fOk = EVP_EncryptUpdate(ctx, &vchCiphertext[0], &nCLen, &vchPlaintext[0], nLen) != 0;
- if (fOk) fOk = EVP_EncryptFinal_ex(ctx, (&vchCiphertext[0]) + nCLen, &nFLen) != 0;
- EVP_CIPHER_CTX_cleanup(ctx);
- EVP_CIPHER_CTX_free(ctx);
- if (!fOk) return false;
- vchCiphertext.resize(nCLen + nFLen);
- return true;
- }
- bool OldDecrypt(const std::vector<unsigned char>& vchCiphertext, CKeyingMaterial& vchPlaintext, const unsigned char chKey[32], const unsigned char chIV[16])
- {
- // plaintext will always be equal to or lesser than length of ciphertext
- int nLen = vchCiphertext.size();
- int nPLen = nLen, nFLen = 0;
- vchPlaintext = CKeyingMaterial(nPLen);
- EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();
- if (!ctx) return false;
- bool fOk = true;
- EVP_CIPHER_CTX_init(ctx);
- if (fOk) fOk = EVP_DecryptInit_ex(ctx, EVP_aes_256_cbc(), NULL, chKey, chIV) != 0;
- if (fOk) fOk = EVP_DecryptUpdate(ctx, &vchPlaintext[0], &nPLen, &vchCiphertext[0], nLen) != 0;
- if (fOk) fOk = EVP_DecryptFinal_ex(ctx, (&vchPlaintext[0]) + nPLen, &nFLen) != 0;
- EVP_CIPHER_CTX_cleanup(ctx);
- EVP_CIPHER_CTX_free(ctx);
- if (!fOk) return false;
- vchPlaintext.resize(nPLen + nFLen);
- return true;
- }
- class TestCrypter
- {
- public:
- static void TestPassphraseSingle(const std::vector<unsigned char>& vchSalt, const SecureString& passphrase, uint32_t rounds,
- const std::vector<unsigned char>& correctKey = std::vector<unsigned char>(),
- const std::vector<unsigned char>& correctIV=std::vector<unsigned char>())
- {
- unsigned char chKey[WALLET_CRYPTO_KEY_SIZE];
- unsigned char chIV[WALLET_CRYPTO_IV_SIZE];
- CCrypter crypt;
- crypt.SetKeyFromPassphrase(passphrase, vchSalt, rounds, 0);
- OldSetKeyFromPassphrase(passphrase, vchSalt, rounds, 0, chKey, chIV);
- BOOST_CHECK_MESSAGE(memcmp(chKey, crypt.vchKey.data(), crypt.vchKey.size()) == 0, \
- HexStr(chKey, chKey+sizeof(chKey)) + std::string(" != ") + HexStr(crypt.vchKey));
- BOOST_CHECK_MESSAGE(memcmp(chIV, crypt.vchIV.data(), crypt.vchIV.size()) == 0, \
- HexStr(chIV, chIV+sizeof(chIV)) + std::string(" != ") + HexStr(crypt.vchIV));
- if(!correctKey.empty())
- BOOST_CHECK_MESSAGE(memcmp(chKey, &correctKey[0], sizeof(chKey)) == 0, \
- HexStr(chKey, chKey+sizeof(chKey)) + std::string(" != ") + HexStr(correctKey.begin(), correctKey.end()));
- if(!correctIV.empty())
- BOOST_CHECK_MESSAGE(memcmp(chIV, &correctIV[0], sizeof(chIV)) == 0,
- HexStr(chIV, chIV+sizeof(chIV)) + std::string(" != ") + HexStr(correctIV.begin(), correctIV.end()));
- }
- static void TestPassphrase(const std::vector<unsigned char>& vchSalt, const SecureString& passphrase, uint32_t rounds,
- const std::vector<unsigned char>& correctKey = std::vector<unsigned char>(),
- const std::vector<unsigned char>& correctIV=std::vector<unsigned char>())
- {
- TestPassphraseSingle(vchSalt, passphrase, rounds, correctKey, correctIV);
- for(SecureString::const_iterator i(passphrase.begin()); i != passphrase.end(); ++i)
- TestPassphraseSingle(vchSalt, SecureString(i, passphrase.end()), rounds);
- }
- static void TestDecrypt(const CCrypter& crypt, const std::vector<unsigned char>& vchCiphertext, \
- const std::vector<unsigned char>& vchPlaintext = std::vector<unsigned char>())
- {
- CKeyingMaterial vchDecrypted1;
- CKeyingMaterial vchDecrypted2;
- int result1, result2;
- result1 = crypt.Decrypt(vchCiphertext, vchDecrypted1);
- result2 = OldDecrypt(vchCiphertext, vchDecrypted2, crypt.vchKey.data(), crypt.vchIV.data());
- BOOST_CHECK(result1 == result2);
- // These two should be equal. However, OpenSSL 1.0.1j introduced a change
- // that would zero all padding except for the last byte for failed decrypts.
- // This behavior was reverted for 1.0.1k.
- if (vchDecrypted1 != vchDecrypted2 && vchDecrypted1.size() >= AES_BLOCK_SIZE && SSLeay() == 0x100010afL)
- {
- for(CKeyingMaterial::iterator it = vchDecrypted1.end() - AES_BLOCK_SIZE; it != vchDecrypted1.end() - 1; it++)
- *it = 0;
- }
- BOOST_CHECK_MESSAGE(vchDecrypted1 == vchDecrypted2, HexStr(vchDecrypted1.begin(), vchDecrypted1.end()) + " != " + HexStr(vchDecrypted2.begin(), vchDecrypted2.end()));
- if (vchPlaintext.size())
- BOOST_CHECK(CKeyingMaterial(vchPlaintext.begin(), vchPlaintext.end()) == vchDecrypted2);
- }
- static void TestEncryptSingle(const CCrypter& crypt, const CKeyingMaterial& vchPlaintext,
- const std::vector<unsigned char>& vchCiphertextCorrect = std::vector<unsigned char>())
- {
- std::vector<unsigned char> vchCiphertext1;
- std::vector<unsigned char> vchCiphertext2;
- int result1 = crypt.Encrypt(vchPlaintext, vchCiphertext1);
- int result2 = OldEncrypt(vchPlaintext, vchCiphertext2, crypt.vchKey.data(), crypt.vchIV.data());
- BOOST_CHECK(result1 == result2);
- BOOST_CHECK(vchCiphertext1 == vchCiphertext2);
- if (!vchCiphertextCorrect.empty())
- BOOST_CHECK(vchCiphertext2 == vchCiphertextCorrect);
- const std::vector<unsigned char> vchPlaintext2(vchPlaintext.begin(), vchPlaintext.end());
- if(vchCiphertext1 == vchCiphertext2)
- TestDecrypt(crypt, vchCiphertext1, vchPlaintext2);
- }
- static void TestEncrypt(const CCrypter& crypt, const std::vector<unsigned char>& vchPlaintextIn, \
- const std::vector<unsigned char>& vchCiphertextCorrect = std::vector<unsigned char>())
- {
- TestEncryptSingle(crypt, CKeyingMaterial(vchPlaintextIn.begin(), vchPlaintextIn.end()), vchCiphertextCorrect);
- for(std::vector<unsigned char>::const_iterator i(vchPlaintextIn.begin()); i != vchPlaintextIn.end(); ++i)
- TestEncryptSingle(crypt, CKeyingMaterial(i, vchPlaintextIn.end()));
- }
- };
- BOOST_AUTO_TEST_CASE(passphrase) {
- // These are expensive.
- TestCrypter::TestPassphrase(ParseHex("0000deadbeef0000"), "test", 25000, \
- ParseHex("fc7aba077ad5f4c3a0988d8daa4810d0d4a0e3bcb53af662998898f33df0556a"), \
- ParseHex("cf2f2691526dd1aa220896fb8bf7c369"));
- std::string hash(GetRandHash().ToString());
- std::vector<unsigned char> vchSalt(8);
- GetRandBytes(&vchSalt[0], vchSalt.size());
- uint32_t rounds = insecure_rand();
- if (rounds > 30000)
- rounds = 30000;
- TestCrypter::TestPassphrase(vchSalt, SecureString(hash.begin(), hash.end()), rounds);
- }
- BOOST_AUTO_TEST_CASE(encrypt) {
- std::vector<unsigned char> vchSalt = ParseHex("0000deadbeef0000");
- BOOST_CHECK(vchSalt.size() == WALLET_CRYPTO_SALT_SIZE);
- CCrypter crypt;
- crypt.SetKeyFromPassphrase("passphrase", vchSalt, 25000, 0);
- TestCrypter::TestEncrypt(crypt, ParseHex("22bcade09ac03ff6386914359cfe885cfeb5f77ff0d670f102f619687453b29d"));
- for (int i = 0; i != 100; i++)
- {
- uint256 hash(GetRandHash());
- TestCrypter::TestEncrypt(crypt, std::vector<unsigned char>(hash.begin(), hash.end()));
- }
- }
- BOOST_AUTO_TEST_CASE(decrypt) {
- std::vector<unsigned char> vchSalt = ParseHex("0000deadbeef0000");
- BOOST_CHECK(vchSalt.size() == WALLET_CRYPTO_SALT_SIZE);
- CCrypter crypt;
- crypt.SetKeyFromPassphrase("passphrase", vchSalt, 25000, 0);
- // Some corner cases the came up while testing
- TestCrypter::TestDecrypt(crypt,ParseHex("795643ce39d736088367822cdc50535ec6f103715e3e48f4f3b1a60a08ef59ca"));
- TestCrypter::TestDecrypt(crypt,ParseHex("de096f4a8f9bd97db012aa9d90d74de8cdea779c3ee8bc7633d8b5d6da703486"));
- TestCrypter::TestDecrypt(crypt,ParseHex("32d0a8974e3afd9c6c3ebf4d66aa4e6419f8c173de25947f98cf8b7ace49449c"));
- TestCrypter::TestDecrypt(crypt,ParseHex("e7c055cca2faa78cb9ac22c9357a90b4778ded9b2cc220a14cea49f931e596ea"));
- TestCrypter::TestDecrypt(crypt,ParseHex("b88efddd668a6801d19516d6830da4ae9811988ccbaf40df8fbb72f3f4d335fd"));
- TestCrypter::TestDecrypt(crypt,ParseHex("8cae76aa6a43694e961ebcb28c8ca8f8540b84153d72865e8561ddd93fa7bfa9"));
- for (int i = 0; i != 100; i++)
- {
- uint256 hash(GetRandHash());
- TestCrypter::TestDecrypt(crypt, std::vector<unsigned char>(hash.begin(), hash.end()));
- }
- }
- BOOST_AUTO_TEST_SUITE_END()