account.cpp

// Copyright (c) 2014-2018, The Monero Project
// 
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
// 
// 1. Redistributions of source code must retain the above copyright notice, this list of
//    conditions and the following disclaimer.
// 
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
//    of conditions and the following disclaimer in the documentation and/or other
//    materials provided with the distribution.
// 
// 3. Neither the name of the copyright holder nor the names of its contributors may be
//    used to endorse or promote products derived from this software without specific
//    prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers

#define context "accounts"
#define hydro_kdf_KEYBYTES 32
#include <fstream>

#include "include_base_utils.h"
#include "account.h"
#include "warnings.h"
#include "crypto/crypto.h"
#include "string_tools.h"
extern "C"
{
#include "crypto/keccak.h"
}
#include "cryptonote_basic_impl.h"
#include "cryptonote_format_utils.h"
#include "libhydrogen/hydrogen.h"

#undef MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_DEFAULT_LOG_CATEGORY "account"

using namespace std;

DISABLE_VS_WARNINGS(4244 4345)

  namespace cryptonote
{

  //-----------------------------------------------------------------
  hw::device& account_keys::get_device() const  {
    return *m_device;
  }
  //-----------------------------------------------------------------
  void account_keys::set_device( hw::device &hwdev)  {
    m_device = &hwdev;
    MCDEBUG("device", "account_keys::set_device device type: "<<typeid(hwdev).name());
  }

  //-----------------------------------------------------------------
  account_base::account_base()
  {
    set_null();
  }
  //-----------------------------------------------------------------
  void account_base::set_null()
  {
    m_keys = account_keys();
  }
  //-----------------------------------------------------------------
  void account_base::forget_spend_key()
  {
    m_keys.m_spend_secret_key = crypto::secret_key();
    m_keys.m_multisig_keys.clear();
  }
  //-----------------------------------------------------------------
  crypto::secret_key account_base::generate_secret() const
  {
    if (hydro_init() < 0)
    {
      MWARNING("Libhydrogen not initialized! Do not use the generated secret!");
    }
    uint8_t buf[32];
    hydro_random_buf(buf, sizeof buf);
    const crypto::secret_key ret =  *reinterpret_cast<const crypto::secret_key*>(buf);
    return ret;
  }
  //-----------------------------------------------------------------
  crypto::secret_key account_base::generate(const crypto::secret_key& recovery_key, bool recover, bool two_random)
  {
    crypto::secret_key first = generate_keys(m_keys.m_account_address.m_spend_public_key, m_keys.m_spend_secret_key, recovery_key, recover);

    // rng for generating second set of keys is hash of first rng.  means only one set of electrum-style words needed for recovery
    crypto::secret_key second;
    keccak((uint8_t *)&m_keys.m_spend_secret_key, sizeof(crypto::secret_key), (uint8_t *)&second, sizeof(crypto::secret_key));

    generate_keys(m_keys.m_account_address.m_view_public_key, m_keys.m_view_secret_key, second, two_random ? false : true);

    struct tm timestamp = {0};
    timestamp.tm_year = 2014 - 1900;  // year 2014
    timestamp.tm_mon = 6 - 1;  // month june
    timestamp.tm_mday = 8;  // 8th of june
    timestamp.tm_hour = 0;
    timestamp.tm_min = 0;
    timestamp.tm_sec = 0;

    if (recover)
    {
      m_creation_timestamp = mktime(&timestamp);
      if (m_creation_timestamp == (uint64_t)-1) // failure
        m_creation_timestamp = 0; // lowest value
    }
    else
    {
      m_creation_timestamp = time(NULL);
    }
    return first;
  }
  //-----------------------------------------------------------------
  void account_base::create_from_keys(const cryptonote::account_public_address& address, const crypto::secret_key& spendkey, const crypto::secret_key& viewkey)
  {
    m_keys.m_account_address = address;
    m_keys.m_spend_secret_key = spendkey;
    m_keys.m_view_secret_key = viewkey;

    struct tm timestamp = {0};
    timestamp.tm_year = 2014 - 1900;  // year 2014
    timestamp.tm_mon = 4 - 1;  // month april
    timestamp.tm_mday = 15;  // 15th of april
    timestamp.tm_hour = 0;
    timestamp.tm_min = 0;
    timestamp.tm_sec = 0;

    m_creation_timestamp = mktime(&timestamp);
    if (m_creation_timestamp == (uint64_t)-1) // failure
      m_creation_timestamp = 0; // lowest value
  }
  //-----------------------------------------------------------------
  bool account_base::create_from_btc(const crypto::secret_key& btc_pubkey, const crypto::secret_key& spendkey, crypto::public_key& viewkey_pub, crypto::public_key& spendkey_pub, cryptonote::account_public_address& address)
  {
    m_keys.m_spend_secret_key = spendkey;
    m_keys.m_view_secret_key = btc_pubkey;
    bool r = crypto::secret_key_to_public_key(m_keys.m_view_secret_key, viewkey_pub);
    if (!r) { MERROR("Pubkey could not be derived from view privkey"); return false; }
    else { m_keys.m_account_address.m_view_public_key = viewkey_pub; };
    bool rtwo = crypto::secret_key_to_public_key(m_keys.m_spend_secret_key, spendkey_pub);
    if (!rtwo) { MERROR("Pubkey could not be derived from spend privkey"); return false; }
    else { m_keys.m_account_address.m_spend_public_key = spendkey_pub; }
    create_from_keys(m_keys.m_account_address, m_keys.m_view_secret_key, m_keys.m_spend_secret_key);
    address = m_keys.m_account_address;
    return true;
  }
  //-----------------------------------------------------------------
  void account_base::create_from_device(const std::string &device_name)
  {

    hw::device &hwdev =  hw::get_device(device_name);
    m_keys.set_device(hwdev);
    hwdev.set_name(device_name);
    MCDEBUG("ledger", "device type: "<<typeid(hwdev).name());
    hwdev.init();
    hwdev.connect();
    hwdev.get_public_address(m_keys.m_account_address);
    hwdev.get_secret_keys(m_keys.m_view_secret_key, m_keys.m_spend_secret_key);
    struct tm timestamp = {0};
    timestamp.tm_year = 2014 - 1900;  // year 2014
    timestamp.tm_mon = 4 - 1;  // month april
    timestamp.tm_mday = 15;  // 15th of april
    timestamp.tm_hour = 0;
    timestamp.tm_min = 0;
    timestamp.tm_sec = 0;

    m_creation_timestamp = mktime(&timestamp);
    if (m_creation_timestamp == (uint64_t)-1) // failure
      m_creation_timestamp = 0; // lowest value
  }

  //-----------------------------------------------------------------
  void account_base::create_from_viewkey(const cryptonote::account_public_address& address, const crypto::secret_key& viewkey)
  {
    crypto::secret_key fake;
    memset(&unwrap(unwrap(fake)), 0, sizeof(fake));
    create_from_keys(address, fake, viewkey);
  }
  //-----------------------------------------------------------------
  bool account_base::make_multisig(const crypto::secret_key &view_secret_key, const crypto::secret_key &spend_secret_key, const crypto::public_key &spend_public_key, const std::vector<crypto::secret_key> &multisig_keys)
  {
    m_keys.m_account_address.m_spend_public_key = spend_public_key;
    m_keys.m_view_secret_key = view_secret_key;
    m_keys.m_spend_secret_key = spend_secret_key;
    m_keys.m_multisig_keys = multisig_keys;
    return crypto::secret_key_to_public_key(view_secret_key, m_keys.m_account_address.m_view_public_key);
  }
  //-----------------------------------------------------------------
  void account_base::finalize_multisig(const crypto::public_key &spend_public_key)
  {
    m_keys.m_account_address.m_spend_public_key = spend_public_key;
  }
  //-----------------------------------------------------------------
  const account_keys& account_base::get_keys() const
  {
    return m_keys;
  }
  //-----------------------------------------------------------------
  std::string account_base::get_public_address_str(network_type nettype) const
  {
    //TODO: change this code into base 58
    return get_account_address_as_str(nettype, false, m_keys.m_account_address);
  }
  //-----------------------------------------------------------------
  std::string account_base::get_public_integrated_address_str(const crypto::hash8 &payment_id, network_type nettype) const
  {
    //TODO: change this code into base 58
    return get_account_integrated_address_as_str(nettype, m_keys.m_account_address, payment_id);
  }
  //-----------------------------------------------------------------
}