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// Copyright (c) 2014-2023, 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.
#include "gtest/gtest.h"
#include "wipeable_string.h"
#include "mnemonics/language_base.h"
#include "mnemonics/electrum-words.h"
#include "crypto/crypto.h"
#include <stdlib.h>
#include <vector>
#include <time.h>
#include <iostream>
#include <boost/algorithm/string.hpp>
#include "mnemonics/chinese_simplified.h"
#include "mnemonics/english.h"
#include "mnemonics/spanish.h"
#include "mnemonics/portuguese.h"
#include "mnemonics/japanese.h"
#include "mnemonics/german.h"
#include "mnemonics/italian.h"
#include "mnemonics/russian.h"
#include "mnemonics/french.h"
#include "mnemonics/dutch.h"
#include "mnemonics/esperanto.h"
#include "mnemonics/lojban.h"
#include "mnemonics/english_old.h"
#include "mnemonics/singleton.h"
namespace
{
/*!
* \brief Compares vectors for equality
* \param expected expected vector
* \param present current vector
*/
void compare_vectors(const std::vector<std::string> &expected, const std::vector<std::string> &present)
{
std::vector<std::string>::const_iterator it1, it2;
for (it1 = expected.begin(), it2 = present.begin(); it1 != expected.end() && it2 != present.end();
it1++, it2++)
{
ASSERT_STREQ(it1->c_str(), it2->c_str());
}
}
/*!
* \brief Tests the given language mnemonics.
* \param language A Language instance to test
*/
void test_language(const Language::Base &language)
{
epee::wipeable_string w_seed = "", w_return_seed = "";
std::string seed, return_seed;
// Generate a random seed without checksum
crypto::secret_key randkey;
for (size_t ii = 0; ii < sizeof(randkey); ++ii)
{
randkey.data[ii] = crypto::rand<uint8_t>();
}
crypto::ElectrumWords::bytes_to_words(randkey, w_seed, language.get_language_name());
seed = std::string(w_seed.data(), w_seed.size());
// remove the checksum word
const char *space = strrchr(seed.c_str(), ' ');
ASSERT_TRUE(space != NULL);
seed = std::string(seed.c_str(), space-seed.c_str());
std::cout << "Test seed without checksum:\n";
std::cout << seed << std::endl;
crypto::secret_key key;
std::string language_name;
bool res;
std::vector<std::string> seed_vector, return_seed_vector;
std::string checksum_word;
// Convert it to secret key
res = crypto::ElectrumWords::words_to_bytes(seed, key, language_name);
ASSERT_EQ(true, res);
std::cout << "Detected language: " << language_name << std::endl;
ASSERT_STREQ(language.get_language_name().c_str(), language_name.c_str());
// Convert the secret key back to seed
crypto::ElectrumWords::bytes_to_words(key, w_return_seed, language.get_language_name());
return_seed = std::string(w_return_seed.data(), w_return_seed.size());
ASSERT_EQ(true, res);
std::cout << "Returned seed:\n";
std::cout << return_seed << std::endl;
boost::split(seed_vector, seed, boost::is_any_of(" "));
boost::split(return_seed_vector, return_seed, boost::is_any_of(" "));
// Extract the checksum word
checksum_word = return_seed_vector.back();
return_seed_vector.pop_back();
ASSERT_EQ(seed_vector.size(), return_seed_vector.size());
// Ensure that the rest of it is same
compare_vectors(seed_vector, return_seed_vector);
// Append the checksum word to repeat the entire process with a seed with checksum
seed += (" " + checksum_word);
std::cout << "Test seed with checksum:\n";
std::cout << seed << std::endl;
res = crypto::ElectrumWords::words_to_bytes(seed, key, language_name);
ASSERT_EQ(true, res);
std::cout << "Detected language: " << language_name << std::endl;
ASSERT_STREQ(language.get_language_name().c_str(), language_name.c_str());
w_return_seed = "";
crypto::ElectrumWords::bytes_to_words(key, w_return_seed, language.get_language_name());
return_seed = std::string(w_return_seed.data(), w_return_seed.size());
ASSERT_EQ(true, res);
std::cout << "Returned seed:\n";
std::cout << return_seed << std::endl;
seed_vector.clear();
return_seed_vector.clear();
boost::split(seed_vector, seed, boost::is_any_of(" "));
boost::split(return_seed_vector, return_seed, boost::is_any_of(" "));
ASSERT_EQ(seed_vector.size(), return_seed_vector.size());
compare_vectors(seed_vector, return_seed_vector);
}
}
TEST(mnemonics, consistency)
{
try {
std::vector<std::string> language_list;
crypto::ElectrumWords::get_language_list(language_list);
}
catch(const std::exception &e)
{
std::cout << "Error initializing mnemonics: " << e.what() << std::endl;
ASSERT_TRUE(false);
}
}
TEST(mnemonics, all_languages)
{
srand(time(NULL));
std::vector<Language::Base*> languages({
Language::Singleton<Language::Chinese_Simplified>::instance(),
Language::Singleton<Language::English>::instance(),
Language::Singleton<Language::Spanish>::instance(),
Language::Singleton<Language::Portuguese>::instance(),
Language::Singleton<Language::Japanese>::instance(),
Language::Singleton<Language::German>::instance(),
Language::Singleton<Language::Italian>::instance(),
Language::Singleton<Language::Russian>::instance(),
Language::Singleton<Language::French>::instance(),
Language::Singleton<Language::Dutch>::instance(),
Language::Singleton<Language::Esperanto>::instance(),
Language::Singleton<Language::Lojban>::instance()
});
for (std::vector<Language::Base*>::iterator it = languages.begin(); it != languages.end(); it++)
{
try {
test_language(*(*it));
}
catch (const std::exception &e) {
std::cout << "Error testing " << (*it)->get_language_name() << " language: " << e.what() << std::endl;
ASSERT_TRUE(false);
}
}
}
TEST(mnemonics, language_detection_with_bad_checksum)
{
crypto::secret_key key;
std::string language_name;
bool res;
// This Portuguese (4-prefix) seed has all its words with 3-prefix that's also present in English
const std::string base_seed = "cinzento luxuriante leonardo gnostico digressao cupula fifa broxar iniquo louvor ovario dorsal ideologo besuntar decurso rosto susto lemure unheiro pagodeiro nitroglicerina eclusa mazurca bigorna";
const std::string real_checksum = "gnostico";
res = crypto::ElectrumWords::words_to_bytes(base_seed, key, language_name);
ASSERT_EQ(true, res);
ASSERT_STREQ(language_name.c_str(), "Português");
res = crypto::ElectrumWords::words_to_bytes(base_seed + " " + real_checksum, key, language_name);
ASSERT_EQ(true, res);
ASSERT_STREQ(language_name.c_str(), "Português");
}
TEST(mnemonics, utf8prefix)
{
ASSERT_TRUE(Language::utf8prefix(epee::wipeable_string("foo"), 0) == "");
ASSERT_TRUE(Language::utf8prefix(epee::wipeable_string("foo"), 1) == "f");
ASSERT_TRUE(Language::utf8prefix(epee::wipeable_string("foo"), 2) == "fo");
ASSERT_TRUE(Language::utf8prefix(epee::wipeable_string("foo"), 3) == "foo");
ASSERT_TRUE(Language::utf8prefix(epee::wipeable_string("foo"), 4) == "foo");
ASSERT_TRUE(Language::utf8prefix(epee::wipeable_string("æon"), 0) == "");
ASSERT_TRUE(Language::utf8prefix(epee::wipeable_string("æon"), 1) == "æ");
ASSERT_TRUE(Language::utf8prefix(epee::wipeable_string("æon"), 2) == "æo");
ASSERT_TRUE(Language::utf8prefix(epee::wipeable_string("æon"), 3) == "æon");
ASSERT_TRUE(Language::utf8prefix(epee::wipeable_string("æon"), 4) == "æon");
}
TEST(mnemonics, case_tolerance)
{
bool res;
//
crypto::secret_key key_1;
std::string language_name_1;
const std::string seed_1 = "Neubau umarmen Abart umarmen Turban feilen Brett Bargeld Episode Milchkuh Substanz Jahr Armband Maibaum Tand Grünalge Tabak erziehen Federboa Lobrede Tenor Leuchter Curry Diskurs Tenor";
res = crypto::ElectrumWords::words_to_bytes(seed_1, key_1, language_name_1);
ASSERT_EQ(true, res);
ASSERT_STREQ(language_name_1.c_str(), "Deutsch");
//
crypto::secret_key key_2;
std::string language_name_2;
// neubau is capitalized in the word list, but the language detection code should be able to detect it as Deutsch
std::string seed_2 = "neubau umarmen Abart umarmen Turban feilen Brett Bargeld Episode Milchkuh Substanz Jahr Armband Maibaum Tand Grünalge Tabak erziehen Federboa Lobrede Tenor Leuchter Curry Diskurs tenor";
boost::algorithm::to_lower(seed_2);
res = crypto::ElectrumWords::words_to_bytes(seed_2, key_2, language_name_2);
ASSERT_EQ(true, res);
ASSERT_STREQ(language_name_2.c_str(), "Deutsch");
//
ASSERT_TRUE(key_1 == key_2);
}
TEST(mnemonics, partial_word_tolerance)
{
bool res;
//
crypto::secret_key key_1;
std::string language_name_1;
const std::string seed_1 = "crim bam scamp gna limi woma wron tuit birth mundane donuts square cohesive dolphin titans narrate fue saved wrap aloof magic mirr toget upda wra";
res = crypto::ElectrumWords::words_to_bytes(seed_1, key_1, language_name_1);
ASSERT_EQ(true, res);
ASSERT_STREQ(language_name_1.c_str(), "English");
}
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