Example #1
0
bool CWallet::ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase, const SecureString& strNewWalletPassphrase)
{
    bool fWasLocked = IsLocked();

    {
        LOCK(cs_wallet);
        Lock();

        CCrypter crypter;
        CKeyingMaterial vMasterKey;
        BOOST_FOREACH(MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
        {
            if(!crypter.SetKeyFromPassphrase(strOldWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
                return false;
            if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
                return false;
            if (CCryptoKeyStore::Unlock(vMasterKey))
            {
                int64 nStartTime = GetTimeMillis();
                crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod);
                pMasterKey.second.nDeriveIterations = pMasterKey.second.nDeriveIterations * (100 / ((double)(GetTimeMillis() - nStartTime)));

                nStartTime = GetTimeMillis();
                crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod);
                pMasterKey.second.nDeriveIterations = (pMasterKey.second.nDeriveIterations + pMasterKey.second.nDeriveIterations * 100 / ((double)(GetTimeMillis() - nStartTime))) / 2;

                if (pMasterKey.second.nDeriveIterations < 25000)
                    pMasterKey.second.nDeriveIterations = 25000;

                printf("Wallet passphrase changed to an nDeriveIterations of %i\n", pMasterKey.second.nDeriveIterations);

                if (!crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
                    return false;
                if (!crypter.Encrypt(vMasterKey, pMasterKey.second.vchCryptedKey))
                    return false;
                CWalletDB(strWalletFile).WriteMasterKey(pMasterKey.first, pMasterKey.second);
                if (fWasLocked)
                    Lock();
                return true;
            }
        }
    }

    return false;
}
Example #2
0
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>())
{
    CCrypter crypt;
    crypt.SetKeyFromPassphrase(passphrase, vchSalt, rounds, 0);

    if(!correctKey.empty())
        BOOST_CHECK_MESSAGE(memcmp(crypt.vchKey.data(), correctKey.data(), crypt.vchKey.size()) == 0, \
            HexStr(crypt.vchKey.begin(), crypt.vchKey.end()) + std::string(" != ") + HexStr(correctKey.begin(), correctKey.end()));
    if(!correctIV.empty())
        BOOST_CHECK_MESSAGE(memcmp(crypt.vchIV.data(), correctIV.data(), crypt.vchIV.size()) == 0,
            HexStr(crypt.vchIV.begin(), crypt.vchIV.end()) + std::string(" != ") + HexStr(correctIV.begin(), correctIV.end()));
}
Example #3
0
bool WalletUtilityDB::Unlock()
{
    CCrypter crypter;
    CKeyingMaterial vMasterKey;

    BOOST_FOREACH(const MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
    {
        if(!crypter.SetKeyFromPassphrase(mPass, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
            return false;
        if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
            continue; // try another master key
        vMKeys.push_back(vMasterKey);
    }
    return true;
}
Example #4
0
bool CWallet::Unlock(const SecureString& strWalletPassphrase)
{
    if (!IsLocked())
        return false;

    CCrypter crypter;
    CKeyingMaterial vMasterKey;

    {
        LOCK(cs_wallet);
        BOOST_FOREACH(const MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
        {
            if(!crypter.SetKeyFromPassphrase(strWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
                return false;
            if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
                return false;
            if (CCryptoKeyStore::Unlock(vMasterKey))
                return true;
        }
    }
    return false;
}
Example #5
0
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()));
}
int main(int argc, char* argv[])
{
  if (argc != 7){
    printf("Hashchecker needs to know the cryptographic details of your wallet!\nUsage: hashchecker pw_to_permute iterations salt crypted_key public_key crypted_secret\n");
    return 1;
  }
  CCrypter crypter;
  CKeyingMaterial vMasterKey;

  // Try any password as input
  SecureString attempt = argv[1];

  const unsigned int nDeriveIterations = atoi(argv[2]);//29731;
  const vector<unsigned char> chSalt = Convert(argv[3]);//"b29a2e128e8e0a2f");//argv[1];
  const vector<unsigned char> vchCryptedKey = Convert(argv[4]);//"982a07407ccb8d70514e7b7ccae4b53d68318ec41fd2bf99bf9dbcafd2f150a92c6eb8f9ea743b782fc5b85403421c1d");//argv[2];
  const vector<unsigned char> vchPubKey = Convert(argv[5]);//"03fefd771544971f3ab95b041bbce02cc799a335d0d12c3bcd46c7c61a4e3ba897");
  const vector<unsigned char> vchCryptedSecret = Convert(argv[6]);//"17169083a74b07ff3497027af7423b9aec1593c90f15a57f52c368593947c85e37b03430840ad48ef409e97ba5a4cdeb");

  double count = Factorial(attempt.size());
  bool found = false;

  for (int i = 0; i <= count; i++)
    {
      if (i > 0) {//test the word as typed in on first iteration
        permutation(i-1, attempt);
      }

      const SecureString strWalletPassphrase = attempt;
      cout << i << "-" << strWalletPassphrase <<"\n";
      if(!crypter.SetKeyFromPassphrase(strWalletPassphrase, chSalt, nDeriveIterations, 0))
        {
          cout << i << " " << strWalletPassphrase <<"\n";
          continue;
        }
      if (!crypter.Decrypt(vchCryptedKey, vMasterKey))
        {
          cout << i << " " << strWalletPassphrase <<"\n";
          continue;
        }

      CSecret vchSecret;
      if(!DecryptSecret(vMasterKey, vchCryptedSecret, Hash(vchPubKey.begin(), vchPubKey.end()), vchSecret))
        {
          cout << "** didn't decrypt **" <<"\n";
          continue;
        }
      if (vchSecret.size() != 32)
        {
          cout << "** wrong size secret **" <<"\n";
          continue;
        }
      CKey key;
      key.SetPubKey(vchPubKey);
      key.SetSecret(vchSecret);
      if (key.GetPubKey() == vchPubKey)
        {
          cout<<"Found one: "<<strWalletPassphrase<<"\n";
          found = true;
          break;
        }
      // else
      //     cout << "** didn't get the pubkey back **\n";
    }
  if (found)
    cout << "Found it! Congratulations\n";
  return 0;
}