// Copyright (c) 2014-2016, The Monero Project
//
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#include "gtest/gtest.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/english.h"
#include "mnemonics/spanish.h"
#include "mnemonics/portuguese.h"
#include "mnemonics/japanese.h"
#include "mnemonics/old_english.h"
#include "mnemonics/language_base.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)
{
const std::vector<std::string> &word_list = language.get_word_list();
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] = rand();
}
crypto::ElectrumWords::bytes_to_words(randkey, seed, language.get_language_name());
// 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, return_seed, language.get_language_name());
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());
return_seed = "";
crypto::ElectrumWords::bytes_to_words(key, return_seed, language.get_language_name());
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, all_languages)
{
srand(time(NULL));
std::vector<Language::Base*> languages({
Language::Singleton<Language::English>::instance(),
Language::Singleton<Language::Spanish>::instance(),
Language::Singleton<Language::Portuguese>::instance(),
Language::Singleton<Language::Japanese>::instance(),
});
for (std::vector<Language::Base*>::iterator it = languages.begin(); it != languages.end(); it++)
{
test_language(*(*it));
}
}
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(), "Portuguese");
res = crypto::ElectrumWords::words_to_bytes(base_seed + " " + real_checksum, key, language_name);
ASSERT_EQ(true, res);
ASSERT_STREQ(language_name.c_str(), "Portuguese");
}
