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262 lines
10 KiB
C++
262 lines
10 KiB
C++
// Copyright (c) 2014-2018, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
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#include <fstream>
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#include "include_base_utils.h"
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#include "account.h"
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#include "warnings.h"
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#include "crypto/crypto.h"
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extern "C"
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{
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#include "crypto/keccak.h"
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}
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#include "cryptonote_basic_impl.h"
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#include "cryptonote_format_utils.h"
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#undef MONERO_DEFAULT_LOG_CATEGORY
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#define MONERO_DEFAULT_LOG_CATEGORY "account"
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#define KEYS_ENCRYPTION_SALT 'k'
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using namespace std;
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DISABLE_VS_WARNINGS(4244 4345)
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namespace cryptonote
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{
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//-----------------------------------------------------------------
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hw::device& account_keys::get_device() const {
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return *m_device;
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}
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//-----------------------------------------------------------------
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void account_keys::set_device( hw::device &hwdev) {
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m_device = &hwdev;
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MCDEBUG("device", "account_keys::set_device device type: "<<typeid(hwdev).name());
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}
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//-----------------------------------------------------------------
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static void derive_key(const crypto::chacha_key &base_key, crypto::chacha_key &key)
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{
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static_assert(sizeof(base_key) == sizeof(crypto::hash), "chacha key and hash should be the same size");
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epee::mlocked<tools::scrubbed_arr<char, sizeof(base_key)+1>> data;
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memcpy(data.data(), &base_key, sizeof(base_key));
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data[sizeof(base_key)] = KEYS_ENCRYPTION_SALT;
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crypto::generate_chacha_key(data.data(), sizeof(data), key, 1);
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}
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//-----------------------------------------------------------------
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static epee::wipeable_string get_key_stream(const crypto::chacha_key &base_key, const crypto::chacha_iv &iv, size_t bytes)
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{
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// derive a new key
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crypto::chacha_key key;
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derive_key(base_key, key);
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// chacha
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epee::wipeable_string buffer0(std::string(bytes, '\0'));
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epee::wipeable_string buffer1 = buffer0;
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crypto::chacha20(buffer0.data(), buffer0.size(), key, iv, buffer1.data());
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return buffer1;
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}
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//-----------------------------------------------------------------
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void account_keys::xor_with_key_stream(const crypto::chacha_key &key)
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{
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// encrypt a large enough byte stream with chacha20
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epee::wipeable_string key_stream = get_key_stream(key, m_encryption_iv, sizeof(crypto::secret_key) * (2 + m_multisig_keys.size()));
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const char *ptr = key_stream.data();
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for (size_t i = 0; i < sizeof(crypto::secret_key); ++i)
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m_spend_secret_key.data[i] ^= *ptr++;
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for (size_t i = 0; i < sizeof(crypto::secret_key); ++i)
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m_view_secret_key.data[i] ^= *ptr++;
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for (crypto::secret_key &k: m_multisig_keys)
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{
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for (size_t i = 0; i < sizeof(crypto::secret_key); ++i)
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k.data[i] ^= *ptr++;
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}
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}
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//-----------------------------------------------------------------
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void account_keys::encrypt(const crypto::chacha_key &key)
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{
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m_encryption_iv = crypto::rand<crypto::chacha_iv>();
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xor_with_key_stream(key);
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}
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//-----------------------------------------------------------------
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void account_keys::decrypt(const crypto::chacha_key &key)
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{
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xor_with_key_stream(key);
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}
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//-----------------------------------------------------------------
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void account_keys::encrypt_viewkey(const crypto::chacha_key &key)
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{
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// encrypt a large enough byte stream with chacha20
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epee::wipeable_string key_stream = get_key_stream(key, m_encryption_iv, sizeof(crypto::secret_key) * 2);
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const char *ptr = key_stream.data();
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ptr += sizeof(crypto::secret_key);
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for (size_t i = 0; i < sizeof(crypto::secret_key); ++i)
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m_view_secret_key.data[i] ^= *ptr++;
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}
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//-----------------------------------------------------------------
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void account_keys::decrypt_viewkey(const crypto::chacha_key &key)
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{
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encrypt_viewkey(key);
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}
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//-----------------------------------------------------------------
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account_base::account_base()
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{
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set_null();
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}
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//-----------------------------------------------------------------
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void account_base::set_null()
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{
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m_keys = account_keys();
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}
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//-----------------------------------------------------------------
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void account_base::forget_spend_key()
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{
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m_keys.m_spend_secret_key = crypto::secret_key();
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m_keys.m_multisig_keys.clear();
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}
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//-----------------------------------------------------------------
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crypto::secret_key account_base::generate(const crypto::secret_key& recovery_key, bool recover, bool two_random)
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{
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crypto::secret_key first = generate_keys(m_keys.m_account_address.m_spend_public_key, m_keys.m_spend_secret_key, recovery_key, recover);
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// rng for generating second set of keys is hash of first rng. means only one set of electrum-style words needed for recovery
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crypto::secret_key second;
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keccak((uint8_t *)&m_keys.m_spend_secret_key, sizeof(crypto::secret_key), (uint8_t *)&second, sizeof(crypto::secret_key));
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generate_keys(m_keys.m_account_address.m_view_public_key, m_keys.m_view_secret_key, second, two_random ? false : true);
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struct tm timestamp = {0};
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timestamp.tm_year = 2014 - 1900; // year 2014
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timestamp.tm_mon = 6 - 1; // month june
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timestamp.tm_mday = 8; // 8th of june
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timestamp.tm_hour = 0;
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timestamp.tm_min = 0;
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timestamp.tm_sec = 0;
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if (recover)
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{
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m_creation_timestamp = mktime(×tamp);
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if (m_creation_timestamp == (uint64_t)-1) // failure
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m_creation_timestamp = 0; // lowest value
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}
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else
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{
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m_creation_timestamp = time(NULL);
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}
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return first;
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}
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//-----------------------------------------------------------------
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void account_base::create_from_keys(const cryptonote::account_public_address& address, const crypto::secret_key& spendkey, const crypto::secret_key& viewkey)
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{
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m_keys.m_account_address = address;
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m_keys.m_spend_secret_key = spendkey;
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m_keys.m_view_secret_key = viewkey;
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struct tm timestamp = {0};
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timestamp.tm_year = 2014 - 1900; // year 2014
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timestamp.tm_mon = 4 - 1; // month april
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timestamp.tm_mday = 15; // 15th of april
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timestamp.tm_hour = 0;
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timestamp.tm_min = 0;
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timestamp.tm_sec = 0;
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m_creation_timestamp = mktime(×tamp);
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if (m_creation_timestamp == (uint64_t)-1) // failure
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m_creation_timestamp = 0; // lowest value
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}
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//-----------------------------------------------------------------
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void account_base::create_from_device(const std::string &device_name)
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{
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hw::device &hwdev = hw::get_device(device_name);
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m_keys.set_device(hwdev);
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hwdev.set_name(device_name);
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MCDEBUG("ledger", "device type: "<<typeid(hwdev).name());
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hwdev.init();
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hwdev.connect();
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hwdev.get_public_address(m_keys.m_account_address);
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hwdev.get_secret_keys(m_keys.m_view_secret_key, m_keys.m_spend_secret_key);
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struct tm timestamp = {0};
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timestamp.tm_year = 2014 - 1900; // year 2014
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timestamp.tm_mon = 4 - 1; // month april
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timestamp.tm_mday = 15; // 15th of april
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timestamp.tm_hour = 0;
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timestamp.tm_min = 0;
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timestamp.tm_sec = 0;
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m_creation_timestamp = mktime(×tamp);
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if (m_creation_timestamp == (uint64_t)-1) // failure
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m_creation_timestamp = 0; // lowest value
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}
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//-----------------------------------------------------------------
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void account_base::create_from_viewkey(const cryptonote::account_public_address& address, const crypto::secret_key& viewkey)
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{
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crypto::secret_key fake;
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memset(&unwrap(unwrap(fake)), 0, sizeof(fake));
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create_from_keys(address, fake, viewkey);
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}
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//-----------------------------------------------------------------
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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)
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{
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m_keys.m_account_address.m_spend_public_key = spend_public_key;
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m_keys.m_view_secret_key = view_secret_key;
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m_keys.m_spend_secret_key = spend_secret_key;
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m_keys.m_multisig_keys = multisig_keys;
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return crypto::secret_key_to_public_key(view_secret_key, m_keys.m_account_address.m_view_public_key);
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}
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//-----------------------------------------------------------------
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void account_base::finalize_multisig(const crypto::public_key &spend_public_key)
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{
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m_keys.m_account_address.m_spend_public_key = spend_public_key;
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}
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//-----------------------------------------------------------------
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const account_keys& account_base::get_keys() const
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{
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return m_keys;
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}
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//-----------------------------------------------------------------
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std::string account_base::get_public_address_str(network_type nettype) const
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{
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//TODO: change this code into base 58
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return get_account_address_as_str(nettype, false, m_keys.m_account_address);
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}
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//-----------------------------------------------------------------
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std::string account_base::get_public_integrated_address_str(const crypto::hash8 &payment_id, network_type nettype) const
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{
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//TODO: change this code into base 58
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return get_account_integrated_address_as_str(nettype, m_keys.m_account_address, payment_id);
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}
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//-----------------------------------------------------------------
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}
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