From ea37614efe518ff8f363ddf2465301687e04d977 Mon Sep 17 00:00:00 2001 From: moneromooo-monero Date: Sat, 7 Jul 2018 00:03:15 +0100 Subject: wallet: wipe seed from memory where appropriate --- src/common/password.cpp | 22 +++---- src/common/password.h | 2 +- src/mnemonics/electrum-words.cpp | 120 ++++++++++++++++++++------------------ src/mnemonics/electrum-words.h | 12 ++-- src/mnemonics/language_base.h | 29 +++++---- src/simplewallet/simplewallet.cpp | 105 ++++++++++++++++++++++++++------- src/simplewallet/simplewallet.h | 7 ++- src/wallet/api/wallet.cpp | 4 +- src/wallet/wallet2.cpp | 44 +++++++++----- src/wallet/wallet2.h | 11 ++-- src/wallet/wallet_rpc_server.cpp | 4 +- 11 files changed, 228 insertions(+), 132 deletions(-) (limited to 'src') diff --git a/src/common/password.cpp b/src/common/password.cpp index 3ce2ba42a..5671c4a4e 100644 --- a/src/common/password.cpp +++ b/src/common/password.cpp @@ -54,7 +54,7 @@ namespace return 0 != _isatty(_fileno(stdin)); } - bool read_from_tty(epee::wipeable_string& pass) + bool read_from_tty(epee::wipeable_string& pass, bool hide_input) { static constexpr const char BACKSPACE = 8; @@ -62,7 +62,7 @@ namespace DWORD mode_old; ::GetConsoleMode(h_cin, &mode_old); - DWORD mode_new = mode_old & ~(ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT); + DWORD mode_new = mode_old & ~((hide_input ? ENABLE_ECHO_INPUT : 0) | ENABLE_LINE_INPUT); ::SetConsoleMode(h_cin, mode_new); bool r = true; @@ -107,14 +107,14 @@ namespace return 0 != isatty(fileno(stdin)); } - int getch() noexcept + int getch(bool hide_input) noexcept { struct termios tty_old; tcgetattr(STDIN_FILENO, &tty_old); struct termios tty_new; tty_new = tty_old; - tty_new.c_lflag &= ~(ICANON | ECHO); + tty_new.c_lflag &= ~(ICANON | (hide_input ? ECHO : 0)); tcsetattr(STDIN_FILENO, TCSANOW, &tty_new); int ch = getchar(); @@ -124,14 +124,14 @@ namespace return ch; } - bool read_from_tty(epee::wipeable_string& aPass) + bool read_from_tty(epee::wipeable_string& aPass, bool hide_input) { static constexpr const char BACKSPACE = 127; aPass.reserve(tools::password_container::max_password_size); while (aPass.size() < tools::password_container::max_password_size) { - int ch = getch(); + int ch = getch(hide_input); if (EOF == ch || ch == EOT) { return false; @@ -159,18 +159,18 @@ namespace #endif // end !WIN32 - bool read_from_tty(const bool verify, const char *message, epee::wipeable_string& pass1, epee::wipeable_string& pass2) + bool read_from_tty(const bool verify, const char *message, bool hide_input, epee::wipeable_string& pass1, epee::wipeable_string& pass2) { while (true) { if (message) std::cout << message <<": " << std::flush; - if (!read_from_tty(pass1)) + if (!read_from_tty(pass1, hide_input)) return false; if (verify) { std::cout << "Confirm password: "; - if (!read_from_tty(pass2)) + if (!read_from_tty(pass2, hide_input)) return false; if(pass1!=pass2) { @@ -229,12 +229,12 @@ namespace tools std::atomic password_container::is_prompting(false); - boost::optional password_container::prompt(const bool verify, const char *message) + boost::optional password_container::prompt(const bool verify, const char *message, bool hide_input) { is_prompting = true; password_container pass1{}; password_container pass2{}; - if (is_cin_tty() ? read_from_tty(verify, message, pass1.m_password, pass2.m_password) : read_from_file(pass1.m_password)) + if (is_cin_tty() ? read_from_tty(verify, message, hide_input, pass1.m_password, pass2.m_password) : read_from_file(pass1.m_password)) { is_prompting = false; return {std::move(pass1)}; diff --git a/src/common/password.h b/src/common/password.h index 61937b93a..529881e40 100644 --- a/src/common/password.h +++ b/src/common/password.h @@ -49,7 +49,7 @@ namespace tools password_container(std::string&& password) noexcept; //! \return A password from stdin TTY prompt or `std::cin` pipe. - static boost::optional prompt(bool verify, const char *mesage = "Password"); + static boost::optional prompt(bool verify, const char *mesage = "Password", bool hide_input = true); static std::atomic is_prompting; password_container(const password_container&) = delete; diff --git a/src/mnemonics/electrum-words.cpp b/src/mnemonics/electrum-words.cpp index 19a9c26bb..290f2cb93 100644 --- a/src/mnemonics/electrum-words.cpp +++ b/src/mnemonics/electrum-words.cpp @@ -43,6 +43,8 @@ #include #include #include +#include "wipeable_string.h" +#include "misc_language.h" #include "crypto/crypto.h" // for declaration of crypto::secret_key #include #include "mnemonics/electrum-words.h" @@ -80,9 +82,9 @@ namespace crypto namespace { - uint32_t create_checksum_index(const std::vector &word_list, + uint32_t create_checksum_index(const std::vector &word_list, uint32_t unique_prefix_length); - bool checksum_test(std::vector seed, uint32_t unique_prefix_length); + bool checksum_test(std::vector seed, uint32_t unique_prefix_length); /*! * \brief Finds the word list that contains the seed words and puts the indices @@ -93,7 +95,7 @@ namespace * \param language Language instance pointer to write to after it is found. * \return true if all the words were present in some language false if not. */ - bool find_seed_language(const std::vector &seed, + bool find_seed_language(const std::vector &seed, bool has_checksum, std::vector &matched_indices, Language::Base **language) { // If there's a new language added, add an instance of it here. @@ -114,17 +116,19 @@ namespace }); Language::Base *fallback = NULL; + std::vector::const_iterator it2; + matched_indices.reserve(seed.size()); + // Iterate through all the languages and find a match for (std::vector::iterator it1 = language_instances.begin(); it1 != language_instances.end(); it1++) { - const std::unordered_map &word_map = (*it1)->get_word_map(); - const std::unordered_map &trimmed_word_map = (*it1)->get_trimmed_word_map(); + const std::unordered_map &word_map = (*it1)->get_word_map(); + const std::unordered_map &trimmed_word_map = (*it1)->get_trimmed_word_map(); // To iterate through seed words - std::vector::const_iterator it2; bool full_match = true; - std::string trimmed_word; + epee::wipeable_string trimmed_word; // Iterate through all the words and see if they're all present for (it2 = seed.begin(); it2 != seed.end(); it2++) { @@ -167,6 +171,7 @@ namespace return true; } // Some didn't match. Clear the index array. + memwipe(matched_indices.data(), matched_indices.size() * sizeof(matched_indices[0])); matched_indices.clear(); } @@ -181,6 +186,7 @@ namespace } MINFO("No match found"); + memwipe(matched_indices.data(), matched_indices.size() * sizeof(matched_indices[0])); return false; } @@ -190,12 +196,12 @@ namespace * \param unique_prefix_length the prefix length of each word to use for checksum * \return Checksum index */ - uint32_t create_checksum_index(const std::vector &word_list, + uint32_t create_checksum_index(const std::vector &word_list, uint32_t unique_prefix_length) { - std::string trimmed_words = ""; + epee::wipeable_string trimmed_words = ""; - for (std::vector::const_iterator it = word_list.begin(); it != word_list.end(); it++) + for (std::vector::const_iterator it = word_list.begin(); it != word_list.end(); it++) { if (it->length() > unique_prefix_length) { @@ -217,22 +223,22 @@ namespace * \param unique_prefix_length the prefix length of each word to use for checksum * \return True if the test passed false if not. */ - bool checksum_test(std::vector seed, uint32_t unique_prefix_length) + bool checksum_test(std::vector seed, uint32_t unique_prefix_length) { if (seed.empty()) return false; // The last word is the checksum. - std::string last_word = seed.back(); + epee::wipeable_string last_word = seed.back(); seed.pop_back(); - std::string checksum = seed[create_checksum_index(seed, unique_prefix_length)]; + epee::wipeable_string checksum = seed[create_checksum_index(seed, unique_prefix_length)]; - std::string trimmed_checksum = checksum.length() > unique_prefix_length ? Language::utf8prefix(checksum, unique_prefix_length) : + epee::wipeable_string trimmed_checksum = checksum.length() > unique_prefix_length ? Language::utf8prefix(checksum, unique_prefix_length) : checksum; - std::string trimmed_last_word = last_word.length() > unique_prefix_length ? Language::utf8prefix(last_word, unique_prefix_length) : + epee::wipeable_string trimmed_last_word = last_word.length() > unique_prefix_length ? Language::utf8prefix(last_word, unique_prefix_length) : last_word; bool ret = trimmed_checksum == trimmed_last_word; - MINFO("Checksum is %s" << (ret ? "valid" : "invalid")); + MINFO("Checksum is " << (ret ? "valid" : "invalid")); return ret; } } @@ -260,13 +266,12 @@ namespace crypto * \param language_name Language of the seed as found gets written here. * \return false if not a multiple of 3 words, or if word is not in the words list */ - bool words_to_bytes(std::string words, std::string& dst, size_t len, bool duplicate, + bool words_to_bytes(const epee::wipeable_string &words, epee::wipeable_string& dst, size_t len, bool duplicate, std::string &language_name) { - std::vector seed; + std::vector seed; - boost::algorithm::trim(words); - boost::split(seed, words, boost::is_any_of(" "), boost::token_compress_on); + words.split(seed); if (len % 4) { @@ -291,6 +296,7 @@ namespace crypto } std::vector matched_indices; + auto wiper = epee::misc_utils::create_scope_leave_handler([&](){memwipe(matched_indices.data(), matched_indices.size() * sizeof(matched_indices[0]));}); Language::Base *language; if (!find_seed_language(seed, has_checksum, matched_indices, &language)) { @@ -313,33 +319,33 @@ namespace crypto for (unsigned int i=0; i < seed.size() / 3; i++) { - uint32_t val; - uint32_t w1, w2, w3; - w1 = matched_indices[i*3]; - w2 = matched_indices[i*3 + 1]; - w3 = matched_indices[i*3 + 2]; + uint32_t w[4]; + w[1] = matched_indices[i*3]; + w[2] = matched_indices[i*3 + 1]; + w[3] = matched_indices[i*3 + 2]; - val = w1 + word_list_length * (((word_list_length - w1) + w2) % word_list_length) + - word_list_length * word_list_length * (((word_list_length - w2) + w3) % word_list_length); + w[0]= w[1] + word_list_length * (((word_list_length - w[1]) + w[2]) % word_list_length) + + word_list_length * word_list_length * (((word_list_length - w[2]) + w[3]) % word_list_length); - if (!(val % word_list_length == w1)) + if (!(w[0]% word_list_length == w[1])) { + memwipe(w, sizeof(w)); MERROR("Invalid seed: mumble mumble"); return false; } - dst.append((const char*)&val, 4); // copy 4 bytes to position + dst.append((const char*)&w[0], 4); // copy 4 bytes to position + memwipe(w, sizeof(w)); } if (len > 0 && duplicate) { const size_t expected = len * 3 / 32; - std::string wlist_copy = words; if (seed.size() == expected/2) { - dst.append(dst); // if electrum 12-word seed, duplicate - wlist_copy += ' '; - wlist_copy += words; + dst += ' '; // if electrum 12-word seed, duplicate + dst += dst; // if electrum 12-word seed, duplicate + dst.pop_back(); // trailing space } } @@ -353,10 +359,10 @@ namespace crypto * \param language_name Language of the seed as found gets written here. * \return false if not a multiple of 3 words, or if word is not in the words list */ - bool words_to_bytes(std::string words, crypto::secret_key& dst, + bool words_to_bytes(const epee::wipeable_string &words, crypto::secret_key& dst, std::string &language_name) { - std::string s; + epee::wipeable_string s; if (!words_to_bytes(words, s, sizeof(dst), true, language_name)) { MERROR("Invalid seed: failed to convert words to bytes"); @@ -378,7 +384,7 @@ namespace crypto * \param language_name Seed language name * \return true if successful false if not. Unsuccessful if wrong key size. */ - bool bytes_to_words(const char *src, size_t len, std::string& words, + bool bytes_to_words(const char *src, size_t len, epee::wipeable_string& words, const std::string &language_name) { @@ -397,39 +403,38 @@ namespace crypto } const std::vector &word_list = language->get_word_list(); // To store the words for random access to add the checksum word later. - std::vector words_store; + std::vector words_store; uint32_t word_list_length = word_list.size(); // 4 bytes -> 3 words. 8 digits base 16 -> 3 digits base 1626 - for (unsigned int i=0; i < len/4; i++, words += ' ') + for (unsigned int i=0; i < len/4; i++, words.push_back(' ')) { - uint32_t w1, w2, w3; - - uint32_t val; + uint32_t w[4]; - memcpy(&val, src + (i * 4), 4); + memcpy(&w[0], src + (i * 4), 4); - w1 = val % word_list_length; - w2 = ((val / word_list_length) + w1) % word_list_length; - w3 = (((val / word_list_length) / word_list_length) + w2) % word_list_length; + w[1] = w[0] % word_list_length; + w[2] = ((w[0] / word_list_length) + w[1]) % word_list_length; + w[3] = (((w[0] / word_list_length) / word_list_length) + w[2]) % word_list_length; - words += word_list[w1]; + words += word_list[w[1]]; words += ' '; - words += word_list[w2]; + words += word_list[w[2]]; words += ' '; - words += word_list[w3]; + words += word_list[w[3]]; + + words_store.push_back(word_list[w[1]]); + words_store.push_back(word_list[w[2]]); + words_store.push_back(word_list[w[3]]); - words_store.push_back(word_list[w1]); - words_store.push_back(word_list[w2]); - words_store.push_back(word_list[w3]); + memwipe(w, sizeof(w)); } - words.pop_back(); - words += (' ' + words_store[create_checksum_index(words_store, language->get_unique_prefix_length())]); + words += words_store[create_checksum_index(words_store, language->get_unique_prefix_length())]; return true; } - bool bytes_to_words(const crypto::secret_key& src, std::string& words, + bool bytes_to_words(const crypto::secret_key& src, epee::wipeable_string& words, const std::string &language_name) { return bytes_to_words(src.data, sizeof(src), words, language_name); @@ -473,11 +478,10 @@ namespace crypto * \param seed The seed to check (a space delimited concatenated word list) * \return true if the seed passed is a old style seed false if not. */ - bool get_is_old_style_seed(std::string seed) + bool get_is_old_style_seed(const epee::wipeable_string &seed) { - std::vector word_list; - boost::algorithm::trim(seed); - boost::split(word_list, seed, boost::is_any_of(" "), boost::token_compress_on); + std::vector word_list; + seed.split(word_list); return word_list.size() != (seed_length + 1); } diff --git a/src/mnemonics/electrum-words.h b/src/mnemonics/electrum-words.h index 856edb92a..5401b9779 100644 --- a/src/mnemonics/electrum-words.h +++ b/src/mnemonics/electrum-words.h @@ -44,6 +44,8 @@ #include #include "crypto/crypto.h" // for declaration of crypto::secret_key +namespace epee { class wipeable_string; } + /*! * \namespace crypto * @@ -70,7 +72,7 @@ namespace crypto * \param language_name Language of the seed as found gets written here. * \return false if not a multiple of 3 words, or if word is not in the words list */ - bool words_to_bytes(std::string words, std::string& dst, size_t len, bool duplicate, + bool words_to_bytes(const epee::wipeable_string &words, epee::wipeable_string& dst, size_t len, bool duplicate, std::string &language_name); /*! * \brief Converts seed words to bytes (secret key). @@ -79,7 +81,7 @@ namespace crypto * \param language_name Language of the seed as found gets written here. * \return false if not a multiple of 3 words, or if word is not in the words list */ - bool words_to_bytes(std::string words, crypto::secret_key& dst, + bool words_to_bytes(const epee::wipeable_string &words, crypto::secret_key& dst, std::string &language_name); /*! @@ -90,7 +92,7 @@ namespace crypto * \param language_name Seed language name * \return true if successful false if not. Unsuccessful if wrong key size. */ - bool bytes_to_words(const char *src, size_t len, std::string& words, + bool bytes_to_words(const char *src, size_t len, epee::wipeable_string& words, const std::string &language_name); /*! @@ -100,7 +102,7 @@ namespace crypto * \param language_name Seed language name * \return true if successful false if not. Unsuccessful if wrong key size. */ - bool bytes_to_words(const crypto::secret_key& src, std::string& words, + bool bytes_to_words(const crypto::secret_key& src, epee::wipeable_string& words, const std::string &language_name); /*! @@ -115,7 +117,7 @@ namespace crypto * \param seed The seed to check (a space delimited concatenated word list) * \return true if the seed passed is a old style seed false if not. */ - bool get_is_old_style_seed(std::string seed); + bool get_is_old_style_seed(const epee::wipeable_string &seed); /*! * \brief Returns the name of a language in English diff --git a/src/mnemonics/language_base.h b/src/mnemonics/language_base.h index 2b0c37c6b..cf518ab2a 100644 --- a/src/mnemonics/language_base.h +++ b/src/mnemonics/language_base.h @@ -53,15 +53,20 @@ namespace Language * \param count How many characters to return. * \return A string consisting of the first count characters in s. */ - inline std::string utf8prefix(const std::string &s, size_t count) + template + inline T utf8prefix(const T &s, size_t count) { - std::string prefix = ""; - const char *ptr = s.c_str(); - while (count-- && *ptr) + T prefix = ""; + size_t avail = s.size(); + const char *ptr = s.data(); + while (count-- && avail--) { prefix += *ptr++; - while (((*ptr) & 0xc0) == 0x80) + while (avail && ((*ptr) & 0xc0) == 0x80) + { prefix += *ptr++; + --avail; + } } return prefix; } @@ -79,8 +84,8 @@ namespace Language ALLOW_DUPLICATE_PREFIXES = 1<<1, }; const std::vector word_list; /*!< A pointer to the array of words */ - std::unordered_map word_map; /*!< hash table to find word's index */ - std::unordered_map trimmed_word_map; /*!< hash table to find word's trimmed index */ + std::unordered_map word_map; /*!< hash table to find word's index */ + std::unordered_map trimmed_word_map; /*!< hash table to find word's trimmed index */ std::string language_name; /*!< Name of language */ std::string english_language_name; /*!< Name of language */ uint32_t unique_prefix_length; /*!< Number of unique starting characters to trim the wordlist to when matching */ @@ -103,7 +108,7 @@ namespace Language else throw std::runtime_error("Too short word in " + language_name + " word list: " + *it); } - std::string trimmed; + epee::wipeable_string trimmed; if (it->length() > unique_prefix_length) { trimmed = utf8prefix(*it, unique_prefix_length); @@ -115,9 +120,9 @@ namespace Language if (trimmed_word_map.find(trimmed) != trimmed_word_map.end()) { if (flags & ALLOW_DUPLICATE_PREFIXES) - MWARNING("Duplicate prefix in " << language_name << " word list: " << trimmed); + MWARNING("Duplicate prefix in " << language_name << " word list: " << std::string(trimmed.data(), trimmed.size())); else - throw std::runtime_error("Duplicate prefix in " + language_name + " word list: " + trimmed); + throw std::runtime_error("Duplicate prefix in " + language_name + " word list: " + std::string(trimmed.data(), trimmed.size())); } trimmed_word_map[trimmed] = ii; } @@ -145,7 +150,7 @@ namespace Language * \brief Returns a pointer to the word map. * \return A pointer to the word map. */ - const std::unordered_map& get_word_map() const + const std::unordered_map& get_word_map() const { return word_map; } @@ -153,7 +158,7 @@ namespace Language * \brief Returns a pointer to the trimmed word map. * \return A pointer to the trimmed word map. */ - const std::unordered_map& get_trimmed_word_map() const + const std::unordered_map& get_trimmed_word_map() const { return trimmed_word_map; } diff --git a/src/simplewallet/simplewallet.cpp b/src/simplewallet/simplewallet.cpp index e07c7e49b..f87c2936d 100644 --- a/src/simplewallet/simplewallet.cpp +++ b/src/simplewallet/simplewallet.cpp @@ -152,12 +152,31 @@ namespace // // Note also that input for passwords is NOT translated, to remain compatible with any // passwords containing special characters that predate this switch to UTF-8 support. - static std::string cp850_to_utf8(const std::string &cp850_str) + template + static T cp850_to_utf8(const T &cp850_str) { boost::locale::generator gen; gen.locale_cache_enabled(true); std::locale loc = gen("en_US.CP850"); - return boost::locale::conv::to_utf(cp850_str, loc); + const boost::locale::conv::method_type how = boost::locale::conv::default_method; + T result; + const char *begin = cp850_str.data(); + const char *end = begin + cp850_str.size(); + result.reserve(end-begin); + typedef std::back_insert_iterator inserter_type; + inserter_type inserter(result); + boost::locale::utf::code_point c; + while(begin!=end) { + c=boost::locale::utf::utf_traits::template decode(begin,end); + if(c==boost::locale::utf::illegal || c==boost::locale::utf::incomplete) { + if(how==boost::locale::conv::stop) + throw boost::locale::conv::conversion_error(); + } + else { + boost::locale::utf::utf_traits::template encode(c,inserter); + } + } + return result; } #endif @@ -177,6 +196,28 @@ namespace return epee::string_tools::trim(buf); } + epee::wipeable_string input_secure_line(const std::string& prompt) + { +#ifdef HAVE_READLINE + rdln::suspend_readline pause_readline; +#endif + auto pwd_container = tools::password_container::prompt(false, prompt.c_str(), false); + if (!pwd_container) + { + MERROR("Failed to read secure line"); + return ""; + } + + epee::wipeable_string buf = pwd_container->password(); + +#ifdef WIN32 + buf = cp850_to_utf8(buf); +#endif + + buf.trim(); + return buf; + } + boost::optional password_prompter(const char *prompt, bool verify) { #ifdef HAVE_READLINE @@ -595,7 +636,7 @@ bool simple_wallet::spendkey(const std::vector &args/* = std::vecto bool simple_wallet::print_seed(bool encrypted) { bool success = false; - std::string seed; + epee::wipeable_string seed; bool ready, multisig; if (m_wallet->key_on_device()) @@ -2679,28 +2720,45 @@ bool simple_wallet::ask_wallet_create_if_needed() * \brief Prints the seed with a nice message * \param seed seed to print */ -void simple_wallet::print_seed(std::string seed) +void simple_wallet::print_seed(const epee::wipeable_string &seed) { success_msg_writer(true) << "\n" << tr("NOTE: the following 25 words can be used to recover access to your wallet. " "Write them down and store them somewhere safe and secure. Please do not store them in " "your email or on file storage services outside of your immediate control.\n"); - boost::replace_nth(seed, " ", 15, "\n"); - boost::replace_nth(seed, " ", 7, "\n"); // don't log - std::cout << seed << std::endl; + int space_index = 0; + size_t len = seed.size(); + for (const char *ptr = seed.data(); len--; ++ptr) + { + if (*ptr == ' ') + { + if (space_index == 15 || space_index == 7) + putchar('\n'); + else + putchar(*ptr); + ++space_index; + } + else + putchar(*ptr); + } + putchar('\n'); + fflush(stdout); } //---------------------------------------------------------------------------------------------------- -static bool might_be_partial_seed(std::string words) +static bool might_be_partial_seed(const epee::wipeable_string &words) { - std::vector seed; + std::vector seed; - boost::algorithm::trim(words); - boost::split(seed, words, boost::is_any_of(" "), boost::token_compress_on); + words.split(seed); return seed.size() < 24; } //---------------------------------------------------------------------------------------------------- bool simple_wallet::init(const boost::program_options::variables_map& vm) { + epee::misc_utils::auto_scope_leave_caller scope_exit_handler = epee::misc_utils::create_scope_leave_handler([&](){ + m_electrum_seed.wipe(); + }); + const bool testnet = tools::wallet2::has_testnet_option(vm); const bool stagenet = tools::wallet2::has_stagenet_option(vm); if (testnet && stagenet) @@ -2710,7 +2768,7 @@ bool simple_wallet::init(const boost::program_options::variables_map& vm) } const network_type nettype = testnet ? TESTNET : stagenet ? STAGENET : MAINNET; - std::string multisig_keys; + epee::wipeable_string multisig_keys; if (!handle_command_line(vm)) return false; @@ -2752,8 +2810,8 @@ bool simple_wallet::init(const boost::program_options::variables_map& vm) { if (m_restore_multisig_wallet) { - const char *prompt = "Specify multisig seed: "; - m_electrum_seed = input_line(prompt); + const char *prompt = "Specify multisig seed"; + m_electrum_seed = input_secure_line(prompt); if (std::cin.eof()) return false; if (m_electrum_seed.empty()) @@ -2767,8 +2825,8 @@ bool simple_wallet::init(const boost::program_options::variables_map& vm) m_electrum_seed = ""; do { - const char *prompt = m_electrum_seed.empty() ? "Specify Electrum seed: " : "Electrum seed continued: "; - std::string electrum_seed = input_line(prompt); + const char *prompt = m_electrum_seed.empty() ? "Specify Electrum seed" : "Electrum seed continued"; + epee::wipeable_string electrum_seed = input_secure_line(prompt); if (std::cin.eof()) return false; if (electrum_seed.empty()) @@ -2776,18 +2834,21 @@ bool simple_wallet::init(const boost::program_options::variables_map& vm) fail_msg_writer() << tr("specify a recovery parameter with the --electrum-seed=\"words list here\""); return false; } - m_electrum_seed += electrum_seed + " "; + m_electrum_seed += electrum_seed; + m_electrum_seed += ' '; } while (might_be_partial_seed(m_electrum_seed)); } } if (m_restore_multisig_wallet) { - if (!epee::string_tools::parse_hexstr_to_binbuff(m_electrum_seed, multisig_keys)) + const boost::optional parsed = m_electrum_seed.parse_hexstr(); + if (!parsed) { fail_msg_writer() << tr("Multisig seed failed verification"); return false; } + multisig_keys = *parsed; } else { @@ -2809,7 +2870,7 @@ bool simple_wallet::init(const boost::program_options::variables_map& vm) crypto::secret_key key; crypto::cn_slow_hash(seed_pass.data(), seed_pass.size(), (crypto::hash&)key); sc_reduce32((unsigned char*)key.data); - multisig_keys = m_wallet->decrypt(multisig_keys, key, true); + multisig_keys = m_wallet->decrypt(std::string(multisig_keys.data(), multisig_keys.size()), key, true); } else m_recovery_key = cryptonote::decrypt_key(m_recovery_key, seed_pass); @@ -3478,7 +3539,7 @@ boost::optional simple_wallet::new_wallet(const boost::pr } // convert rng value to electrum-style word list - std::string electrum_words; + epee::wipeable_string electrum_words; crypto::ElectrumWords::bytes_to_words(recovery_val, electrum_words, mnemonic_language); @@ -3586,7 +3647,7 @@ boost::optional simple_wallet::new_wallet(const boost::pr } //---------------------------------------------------------------------------------------------------- boost::optional simple_wallet::new_wallet(const boost::program_options::variables_map& vm, - const std::string &multisig_keys, const std::string &old_language) + const epee::wipeable_string &multisig_keys, const std::string &old_language) { auto rc = tools::wallet2::make_new(vm, password_prompter); m_wallet = std::move(rc.first); @@ -3697,7 +3758,7 @@ bool simple_wallet::open_wallet(const boost::program_options::variables_map& vm) m_wallet->rewrite(m_wallet_file, password); // Display the seed - std::string seed; + epee::wipeable_string seed; m_wallet->get_seed(seed); print_seed(seed); } diff --git a/src/simplewallet/simplewallet.h b/src/simplewallet/simplewallet.h index 472ad0c00..c8e17ea6e 100644 --- a/src/simplewallet/simplewallet.h +++ b/src/simplewallet/simplewallet.h @@ -44,6 +44,7 @@ #include "cryptonote_basic/cryptonote_basic_impl.h" #include "wallet/wallet2.h" #include "console_handler.h" +#include "wipeable_string.h" #include "common/i18n.h" #include "common/password.h" #include "crypto/crypto.h" // for definition of crypto::secret_key @@ -96,7 +97,7 @@ namespace cryptonote boost::optional new_wallet(const boost::program_options::variables_map& vm, const cryptonote::account_public_address& address, const boost::optional& spendkey, const crypto::secret_key& viewkey); boost::optional new_wallet(const boost::program_options::variables_map& vm, - const std::string &multisig_keys, const std::string &old_language); + const epee::wipeable_string &multisig_keys, const std::string &old_language); boost::optional new_wallet(const boost::program_options::variables_map& vm, const std::string& device_name); bool open_wallet(const boost::program_options::variables_map& vm); bool close_wallet(); @@ -238,7 +239,7 @@ namespace cryptonote * \brief Prints the seed with a nice message * \param seed seed to print */ - void print_seed(std::string seed); + void print_seed(const epee::wipeable_string &seed); /*! * \brief Gets the word seed language from the user. @@ -329,7 +330,7 @@ namespace cryptonote std::string m_import_path; std::string m_subaddress_lookahead; - std::string m_electrum_seed; // electrum-style seed parameter + epee::wipeable_string m_electrum_seed; // electrum-style seed parameter crypto::secret_key m_recovery_key; // recovery key (used as random for wallet gen) bool m_restore_deterministic_wallet; // recover flag diff --git a/src/wallet/api/wallet.cpp b/src/wallet/api/wallet.cpp index b48bf07e0..e75bee5c9 100644 --- a/src/wallet/api/wallet.cpp +++ b/src/wallet/api/wallet.cpp @@ -733,10 +733,10 @@ bool WalletImpl::close(bool store) std::string WalletImpl::seed() const { - std::string seed; + epee::wipeable_string seed; if (m_wallet) m_wallet->get_seed(seed); - return seed; + return std::string(seed.data(), seed.size()); // TODO } std::string WalletImpl::getSeedLanguage() const diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp index 9deaad09b..e61e437c0 100644 --- a/src/wallet/wallet2.cpp +++ b/src/wallet/wallet2.cpp @@ -789,7 +789,7 @@ bool wallet2::is_deterministic() const return keys_deterministic; } //---------------------------------------------------------------------------------------------------- -bool wallet2::get_seed(std::string& electrum_words, const epee::wipeable_string &passphrase) const +bool wallet2::get_seed(epee::wipeable_string& electrum_words, const epee::wipeable_string &passphrase) const { bool keys_deterministic = is_deterministic(); if (!keys_deterministic) @@ -815,7 +815,7 @@ bool wallet2::get_seed(std::string& electrum_words, const epee::wipeable_string return true; } //---------------------------------------------------------------------------------------------------- -bool wallet2::get_multisig_seed(std::string& seed, const epee::wipeable_string &passphrase, bool raw) const +bool wallet2::get_multisig_seed(epee::wipeable_string& seed, const epee::wipeable_string &passphrase, bool raw) const { bool ready; uint32_t threshold, total; @@ -838,7 +838,7 @@ bool wallet2::get_multisig_seed(std::string& seed, const epee::wipeable_string & crypto::secret_key skey; crypto::public_key pkey; const account_keys &keys = get_account().get_keys(); - std::string data; + epee::wipeable_string data; data.append((const char*)&threshold, sizeof(uint32_t)); data.append((const char*)&total, sizeof(uint32_t)); skey = keys.m_spend_secret_key; @@ -864,7 +864,7 @@ bool wallet2::get_multisig_seed(std::string& seed, const epee::wipeable_string & if (raw) { - seed = epee::string_tools::buff_to_hex_nodelimer(data); + seed = epee::to_hex::wipeable_string({(const unsigned char*)data.data(), data.size()}); } else { @@ -3161,7 +3161,7 @@ bool wallet2::verify_password(const std::string& keys_file_name, const epee::wip * \param create_address_file Whether to create an address file */ void wallet2::generate(const std::string& wallet_, const epee::wipeable_string& password, - const std::string& multisig_data, bool create_address_file) + const epee::wipeable_string& multisig_data, bool create_address_file) { clear(); prepare_file_names(wallet_); @@ -10671,14 +10671,14 @@ size_t wallet2::import_multisig(std::vector blobs) return n_outputs; } //---------------------------------------------------------------------------------------------------- -std::string wallet2::encrypt(const std::string &plaintext, const crypto::secret_key &skey, bool authenticated) const +std::string wallet2::encrypt(const char *plaintext, size_t len, const crypto::secret_key &skey, bool authenticated) const { crypto::chacha_key key; crypto::generate_chacha_key(&skey, sizeof(skey), key, m_kdf_rounds); std::string ciphertext; crypto::chacha_iv iv = crypto::rand(); - ciphertext.resize(plaintext.size() + sizeof(iv) + (authenticated ? sizeof(crypto::signature) : 0)); - crypto::chacha20(plaintext.data(), plaintext.size(), key, iv, &ciphertext[sizeof(iv)]); + ciphertext.resize(len + sizeof(iv) + (authenticated ? sizeof(crypto::signature) : 0)); + crypto::chacha20(plaintext, len, key, iv, &ciphertext[sizeof(iv)]); memcpy(&ciphertext[0], &iv, sizeof(iv)); if (authenticated) { @@ -10692,12 +10692,28 @@ std::string wallet2::encrypt(const std::string &plaintext, const crypto::secret_ return ciphertext; } //---------------------------------------------------------------------------------------------------- +std::string wallet2::encrypt(const epee::span &plaintext, const crypto::secret_key &skey, bool authenticated) const +{ + return encrypt(plaintext.data(), plaintext.size(), skey, authenticated); +} +//---------------------------------------------------------------------------------------------------- +std::string wallet2::encrypt(const std::string &plaintext, const crypto::secret_key &skey, bool authenticated) const +{ + return encrypt(plaintext.data(), plaintext.size(), skey, authenticated); +} +//---------------------------------------------------------------------------------------------------- +std::string wallet2::encrypt(const epee::wipeable_string &plaintext, const crypto::secret_key &skey, bool authenticated) const +{ + return encrypt(plaintext.data(), plaintext.size(), skey, authenticated); +} +//---------------------------------------------------------------------------------------------------- std::string wallet2::encrypt_with_view_secret_key(const std::string &plaintext, bool authenticated) const { return encrypt(plaintext, get_account().get_keys().m_view_secret_key, authenticated); } //---------------------------------------------------------------------------------------------------- -std::string wallet2::decrypt(const std::string &ciphertext, const crypto::secret_key &skey, bool authenticated) const +template +T wallet2::decrypt(const std::string &ciphertext, const crypto::secret_key &skey, bool authenticated) const { const size_t prefix_size = sizeof(chacha_iv) + (authenticated ? sizeof(crypto::signature) : 0); THROW_WALLET_EXCEPTION_IF(ciphertext.size() < prefix_size, @@ -10706,8 +10722,6 @@ std::string wallet2::decrypt(const std::string &ciphertext, const crypto::secret crypto::chacha_key key; crypto::generate_chacha_key(&skey, sizeof(skey), key, m_kdf_rounds); const crypto::chacha_iv &iv = *(const crypto::chacha_iv*)&ciphertext[0]; - std::string plaintext; - plaintext.resize(ciphertext.size() - prefix_size); if (authenticated) { crypto::hash hash; @@ -10718,10 +10732,14 @@ std::string wallet2::decrypt(const std::string &ciphertext, const crypto::secret THROW_WALLET_EXCEPTION_IF(!crypto::check_signature(hash, pkey, signature), error::wallet_internal_error, "Failed to authenticate ciphertext"); } - crypto::chacha20(ciphertext.data() + sizeof(iv), ciphertext.size() - prefix_size, key, iv, &plaintext[0]); - return plaintext; + std::unique_ptr buffer{new char[ciphertext.size() - prefix_size]}; + auto wiper = epee::misc_utils::create_scope_leave_handler([&]() { memwipe(buffer.get(), ciphertext.size() - prefix_size); }); + crypto::chacha20(ciphertext.data() + sizeof(iv), ciphertext.size() - prefix_size, key, iv, buffer.get()); + return T(buffer.get(), ciphertext.size() - prefix_size); } //---------------------------------------------------------------------------------------------------- +template epee::wipeable_string wallet2::decrypt(const std::string &ciphertext, const crypto::secret_key &skey, bool authenticated) const; +//---------------------------------------------------------------------------------------------------- std::string wallet2::decrypt_with_view_secret_key(const std::string &ciphertext, bool authenticated) const { return decrypt(ciphertext, get_account().get_keys().m_view_secret_key, authenticated); diff --git a/src/wallet/wallet2.h b/src/wallet/wallet2.h index d04156461..86fee0da7 100644 --- a/src/wallet/wallet2.h +++ b/src/wallet/wallet2.h @@ -495,7 +495,7 @@ namespace tools * \param create_address_file Whether to create an address file */ void generate(const std::string& wallet_, const epee::wipeable_string& password, - const std::string& multisig_data, bool create_address_file = false); + const epee::wipeable_string& multisig_data, bool create_address_file = false); /*! * \brief Generates a wallet or restores one. @@ -637,7 +637,7 @@ namespace tools * \brief Checks if deterministic wallet */ bool is_deterministic() const; - bool get_seed(std::string& electrum_words, const epee::wipeable_string &passphrase = epee::wipeable_string()) const; + bool get_seed(epee::wipeable_string& electrum_words, const epee::wipeable_string &passphrase = epee::wipeable_string()) const; /*! * \brief Checks if light wallet. A light wallet sends view key to a server where the blockchain is scanned. @@ -691,7 +691,7 @@ namespace tools bool multisig(bool *ready = NULL, uint32_t *threshold = NULL, uint32_t *total = NULL) const; bool has_multisig_partial_key_images() const; bool has_unknown_key_images() const; - bool get_multisig_seed(std::string& seed, const epee::wipeable_string &passphrase = std::string(), bool raw = true) const; + bool get_multisig_seed(epee::wipeable_string& seed, const epee::wipeable_string &passphrase = std::string(), bool raw = true) const; bool key_on_device() const { return m_key_on_device; } // locked & unlocked balance of given or current subaddress account @@ -1054,9 +1054,12 @@ namespace tools void update_pool_state(bool refreshed = false); void remove_obsolete_pool_txs(const std::vector &tx_hashes); + std::string encrypt(const char *plaintext, size_t len, const crypto::secret_key &skey, bool authenticated = true) const; + std::string encrypt(const epee::span &span, const crypto::secret_key &skey, bool authenticated = true) const; std::string encrypt(const std::string &plaintext, const crypto::secret_key &skey, bool authenticated = true) const; + std::string encrypt(const epee::wipeable_string &plaintext, const crypto::secret_key &skey, bool authenticated = true) const; std::string encrypt_with_view_secret_key(const std::string &plaintext, bool authenticated = true) const; - std::string decrypt(const std::string &ciphertext, const crypto::secret_key &skey, bool authenticated = true) const; + template T decrypt(const std::string &ciphertext, const crypto::secret_key &skey, bool authenticated = true) const; std::string decrypt_with_view_secret_key(const std::string &ciphertext, bool authenticated = true) const; std::string make_uri(const std::string &address, const std::string &payment_id, uint64_t amount, const std::string &tx_description, const std::string &recipient_name, std::string &error) const; diff --git a/src/wallet/wallet_rpc_server.cpp b/src/wallet/wallet_rpc_server.cpp index 510cb3e58..136cd0e2d 100644 --- a/src/wallet/wallet_rpc_server.cpp +++ b/src/wallet/wallet_rpc_server.cpp @@ -1574,11 +1574,13 @@ namespace tools if (req.key_type.compare("mnemonic") == 0) { - if (!m_wallet->get_seed(res.key)) + epee::wipeable_string seed; + if (!m_wallet->get_seed(seed)) { er.message = "The wallet is non-deterministic. Cannot display seed."; return false; } + res.key = std::string(seed.data(), seed.size()); // send to the network, then wipe RAM :D } else if(req.key_type.compare("view_key") == 0) { -- cgit v1.2.3 From e9ffa91257b672009e8b8c84027378f3893a6d01 Mon Sep 17 00:00:00 2001 From: moneromooo-monero Date: Sun, 8 Jul 2018 21:12:33 +0100 Subject: store secret keys encrypted where possible The secret spend key is kept encrypted in memory, and decrypted on the fly when needed. Both spend and view secret keys are kept encrypted in a JSON field in the keys file. This avoids leaving the keys in memory due to being manipulated by the JSON I/O API. --- src/cryptonote_basic/account.cpp | 66 ++++++++ src/cryptonote_basic/account.h | 16 ++ src/gen_multisig/gen_multisig.cpp | 4 +- src/simplewallet/simplewallet.cpp | 237 +++++++++++++++++++---------- src/simplewallet/simplewallet.h | 1 + src/wallet/api/wallet.cpp | 3 +- src/wallet/wallet2.cpp | 312 +++++++++++++++++++++++++++++++------- src/wallet/wallet2.h | 57 ++++--- src/wallet/wallet_errors.h | 9 ++ src/wallet/wallet_rpc_server.cpp | 10 +- 10 files changed, 561 insertions(+), 154 deletions(-) (limited to 'src') diff --git a/src/cryptonote_basic/account.cpp b/src/cryptonote_basic/account.cpp index aac6ec22b..0aebf9223 100644 --- a/src/cryptonote_basic/account.cpp +++ b/src/cryptonote_basic/account.cpp @@ -44,6 +44,9 @@ extern "C" #undef MONERO_DEFAULT_LOG_CATEGORY #define MONERO_DEFAULT_LOG_CATEGORY "account" +#define KEYS_ENCRYPTION_SALT 'k' + + using namespace std; DISABLE_VS_WARNINGS(4244 4345) @@ -60,7 +63,70 @@ DISABLE_VS_WARNINGS(4244 4345) m_device = &hwdev; MCDEBUG("device", "account_keys::set_device device type: "< data; + memcpy(data.data(), &base_key, sizeof(base_key)); + data[sizeof(base_key)] = KEYS_ENCRYPTION_SALT; + crypto::generate_chacha_key(data.data(), sizeof(data), key, 1); + } + //----------------------------------------------------------------- + static epee::wipeable_string get_key_stream(const crypto::chacha_key &base_key, const crypto::chacha_iv &iv, size_t bytes) + { + // derive a new key + crypto::chacha_key key; + derive_key(base_key, key); + // chacha + epee::wipeable_string buffer0(std::string(bytes, '\0')); + epee::wipeable_string buffer1 = buffer0; + crypto::chacha20(buffer0.data(), buffer0.size(), key, iv, buffer1.data()); + return buffer1; + } + //----------------------------------------------------------------- + void account_keys::xor_with_key_stream(const crypto::chacha_key &key) + { + // encrypt a large enough byte stream with chacha20 + epee::wipeable_string key_stream = get_key_stream(key, m_encryption_iv, sizeof(crypto::secret_key) * (2 + m_multisig_keys.size())); + const char *ptr = key_stream.data(); + for (size_t i = 0; i < sizeof(crypto::secret_key); ++i) + m_spend_secret_key.data[i] ^= *ptr++; + for (size_t i = 0; i < sizeof(crypto::secret_key); ++i) + m_view_secret_key.data[i] ^= *ptr++; + for (crypto::secret_key &k: m_multisig_keys) + { + for (size_t i = 0; i < sizeof(crypto::secret_key); ++i) + k.data[i] ^= *ptr++; + } + } + //----------------------------------------------------------------- + void account_keys::encrypt(const crypto::chacha_key &key) + { + m_encryption_iv = crypto::rand(); + xor_with_key_stream(key); + } + //----------------------------------------------------------------- + void account_keys::decrypt(const crypto::chacha_key &key) + { + xor_with_key_stream(key); + } + //----------------------------------------------------------------- + void account_keys::encrypt_viewkey(const crypto::chacha_key &key) + { + // encrypt a large enough byte stream with chacha20 + epee::wipeable_string key_stream = get_key_stream(key, m_encryption_iv, sizeof(crypto::secret_key) * 2); + const char *ptr = key_stream.data(); + ptr += sizeof(crypto::secret_key); + for (size_t i = 0; i < sizeof(crypto::secret_key); ++i) + m_view_secret_key.data[i] ^= *ptr++; + } + //----------------------------------------------------------------- + void account_keys::decrypt_viewkey(const crypto::chacha_key &key) + { + encrypt_viewkey(key); + } //----------------------------------------------------------------- account_base::account_base() { diff --git a/src/cryptonote_basic/account.h b/src/cryptonote_basic/account.h index b5d119c46..dac66ff1a 100644 --- a/src/cryptonote_basic/account.h +++ b/src/cryptonote_basic/account.h @@ -44,18 +44,29 @@ namespace cryptonote crypto::secret_key m_view_secret_key; std::vector m_multisig_keys; hw::device *m_device = &hw::get_device("default"); + crypto::chacha_iv m_encryption_iv; BEGIN_KV_SERIALIZE_MAP() KV_SERIALIZE(m_account_address) KV_SERIALIZE_VAL_POD_AS_BLOB_FORCE(m_spend_secret_key) KV_SERIALIZE_VAL_POD_AS_BLOB_FORCE(m_view_secret_key) KV_SERIALIZE_CONTAINER_POD_AS_BLOB(m_multisig_keys) + const crypto::chacha_iv default_iv{{0, 0, 0, 0, 0, 0, 0, 0}}; + KV_SERIALIZE_VAL_POD_AS_BLOB_OPT(m_encryption_iv, default_iv) END_KV_SERIALIZE_MAP() account_keys& operator=(account_keys const&) = default; + void encrypt(const crypto::chacha_key &key); + void decrypt(const crypto::chacha_key &key); + void encrypt_viewkey(const crypto::chacha_key &key); + void decrypt_viewkey(const crypto::chacha_key &key); + hw::device& get_device() const ; void set_device( hw::device &hwdev) ; + + private: + void xor_with_key_stream(const crypto::chacha_key &key); }; /************************************************************************/ @@ -87,6 +98,11 @@ namespace cryptonote void forget_spend_key(); const std::vector &get_multisig_keys() const { return m_keys.m_multisig_keys; } + void encrypt_keys(const crypto::chacha_key &key) { m_keys.encrypt(key); } + void decrypt_keys(const crypto::chacha_key &key) { m_keys.decrypt(key); } + void encrypt_viewkey(const crypto::chacha_key &key) { m_keys.encrypt_viewkey(key); } + void decrypt_viewkey(const crypto::chacha_key &key) { m_keys.decrypt_viewkey(key); } + template inline void serialize(t_archive &a, const unsigned int /*ver*/) { diff --git a/src/gen_multisig/gen_multisig.cpp b/src/gen_multisig/gen_multisig.cpp index 03e0a7946..e680a8157 100644 --- a/src/gen_multisig/gen_multisig.cpp +++ b/src/gen_multisig/gen_multisig.cpp @@ -92,7 +92,7 @@ static bool generate_multisig(uint32_t threshold, uint32_t total, const std::str { std::string name = basename + "-" + std::to_string(n + 1); wallets[n].reset(new tools::wallet2(nettype)); - wallets[n]->init(""); + wallets[n]->init(false, ""); wallets[n]->generate(name, pwd_container->password(), rct::rct2sk(rct::skGen()), false, false, create_address_file); } @@ -101,11 +101,13 @@ static bool generate_multisig(uint32_t threshold, uint32_t total, const std::str std::vector pk(total); for (size_t n = 0; n < total; ++n) { + wallets[n]->decrypt_keys(pwd_container->password()); if (!tools::wallet2::verify_multisig_info(wallets[n]->get_multisig_info(), sk[n], pk[n])) { tools::fail_msg_writer() << tr("Failed to verify multisig info"); return false; } + wallets[n]->encrypt_keys(pwd_container->password()); } // make the wallets multisig diff --git a/src/simplewallet/simplewallet.cpp b/src/simplewallet/simplewallet.cpp index f87c2936d..038605725 100644 --- a/src/simplewallet/simplewallet.cpp +++ b/src/simplewallet/simplewallet.cpp @@ -106,6 +106,12 @@ typedef cryptonote::simple_wallet sw; m_auto_refresh_enabled.store(auto_refresh_enabled, std::memory_order_relaxed); \ }) +#define SCOPED_WALLET_UNLOCK() \ + LOCK_IDLE_SCOPE(); \ + boost::optional pwd_container = boost::none; \ + if (m_wallet->ask_password() && !m_wallet->watch_only() && !(pwd_container = get_and_verify_password())) { return true; } \ + tools::wallet_keys_unlocker unlocker(*m_wallet, pwd_container); + enum TransferType { TransferOriginal, TransferNew, @@ -553,6 +559,18 @@ namespace } return true; } + + void print_secret_key(const crypto::secret_key &k) + { + static constexpr const char hex[] = u8"0123456789abcdef"; + const uint8_t *ptr = (const uint8_t*)k.data; + for (size_t i = 0, sz = sizeof(k); i < sz; ++i) + { + putchar(hex[*ptr >> 4]); + putchar(hex[*ptr & 15]); + ++ptr; + } + } } bool parse_priority(const std::string& arg, uint32_t& priority) @@ -602,12 +620,15 @@ std::string simple_wallet::get_command_usage(const std::vector &arg bool simple_wallet::viewkey(const std::vector &args/* = std::vector()*/) { - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } + SCOPED_WALLET_UNLOCK(); // don't log + PAUSE_READLINE(); if (m_wallet->key_on_device()) { std::cout << "secret: On device. Not available" << std::endl; } else { - std::cout << "secret: " << string_tools::pod_to_hex(m_wallet->get_account().get_keys().m_view_secret_key) << std::endl; + printf("secret: "); + print_secret_key(m_wallet->get_account().get_keys().m_view_secret_key); + putchar('\n'); } std::cout << "public: " << string_tools::pod_to_hex(m_wallet->get_account().get_keys().m_account_address.m_view_public_key) << std::endl; @@ -621,12 +642,15 @@ bool simple_wallet::spendkey(const std::vector &args/* = std::vecto fail_msg_writer() << tr("wallet is watch-only and has no spend key"); return true; } - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } + SCOPED_WALLET_UNLOCK(); // don't log + PAUSE_READLINE(); if (m_wallet->key_on_device()) { std::cout << "secret: On device. Not available" << std::endl; } else { - std::cout << "secret: " << string_tools::pod_to_hex(m_wallet->get_account().get_keys().m_spend_secret_key) << std::endl; + printf("secret: "); + print_secret_key(m_wallet->get_account().get_keys().m_spend_secret_key); + putchar('\n'); } std::cout << "public: " << string_tools::pod_to_hex(m_wallet->get_account().get_keys().m_account_address.m_spend_public_key) << std::endl; @@ -649,7 +673,8 @@ bool simple_wallet::print_seed(bool encrypted) fail_msg_writer() << tr("wallet is watch-only and has no seed"); return true; } - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } + + SCOPED_WALLET_UNLOCK(); multisig = m_wallet->multisig(&ready); if (multisig) @@ -718,22 +743,36 @@ bool simple_wallet::seed_set_language(const std::vector &args/* = s fail_msg_writer() << tr("wallet is watch-only and has no seed"); return true; } - if (!m_wallet->is_deterministic()) - { - fail_msg_writer() << tr("wallet is non-deterministic and has no seed"); - return true; - } - - const auto pwd_container = get_and_verify_password(); - if (pwd_container) + + epee::wipeable_string password; { - std::string mnemonic_language = get_mnemonic_language(); - if (mnemonic_language.empty()) + SCOPED_WALLET_UNLOCK(); + + if (!m_wallet->is_deterministic()) + { + fail_msg_writer() << tr("wallet is non-deterministic and has no seed"); return true; + } - m_wallet->set_seed_language(std::move(mnemonic_language)); - m_wallet->rewrite(m_wallet_file, pwd_container->password()); + // we need the password, even if ask-password is unset + if (!pwd_container) + { + pwd_container = get_and_verify_password(); + if (pwd_container == boost::none) + { + fail_msg_writer() << tr("Incorrect password"); + return true; + } + } + password = pwd_container->password(); } + + std::string mnemonic_language = get_mnemonic_language(); + if (mnemonic_language.empty()) + return true; + + m_wallet->set_seed_language(std::move(mnemonic_language)); + m_wallet->rewrite(m_wallet_file, password); return true; } @@ -754,8 +793,7 @@ bool simple_wallet::change_password(const std::vector &args) try { - m_wallet->rewrite(m_wallet_file, pwd_container->password()); - m_wallet->store(); + m_wallet->change_password(m_wallet_file, orig_pwd_container->password(), pwd_container->password()); } catch (const tools::error::wallet_logic_error& e) { @@ -858,12 +896,7 @@ bool simple_wallet::prepare_multisig(const std::vector &args) return true; } - const auto orig_pwd_container = get_and_verify_password(); - if(orig_pwd_container == boost::none) - { - fail_msg_writer() << tr("Your password is incorrect."); - return true; - } + SCOPED_WALLET_UNLOCK(); std::string multisig_info = m_wallet->get_multisig_info(); success_msg_writer() << multisig_info; @@ -896,13 +929,6 @@ bool simple_wallet::make_multisig(const std::vector &args) return true; } - const auto orig_pwd_container = get_and_verify_password(); - if(orig_pwd_container == boost::none) - { - fail_msg_writer() << tr("Your original password was incorrect."); - return true; - } - if (args.size() < 2) { fail_msg_writer() << tr("usage: make_multisig [...]"); @@ -917,6 +943,13 @@ bool simple_wallet::make_multisig(const std::vector &args) return true; } + const auto orig_pwd_container = get_and_verify_password(); + if(orig_pwd_container == boost::none) + { + fail_msg_writer() << tr("Your original password was incorrect."); + return true; + } + LOCK_IDLE_SCOPE(); try @@ -958,6 +991,14 @@ bool simple_wallet::finalize_multisig(const std::vector &args) fail_msg_writer() << tr("command not supported by HW wallet"); return true; } + + const auto pwd_container = get_and_verify_password(); + if(pwd_container == boost::none) + { + fail_msg_writer() << tr("Your original password was incorrect."); + return true; + } + if (!m_wallet->multisig(&ready)) { fail_msg_writer() << tr("This wallet is not multisig"); @@ -969,12 +1010,7 @@ bool simple_wallet::finalize_multisig(const std::vector &args) return true; } - const auto orig_pwd_container = get_and_verify_password(); - if(orig_pwd_container == boost::none) - { - fail_msg_writer() << tr("Your original password was incorrect."); - return true; - } + LOCK_IDLE_SCOPE(); if (args.size() < 2) { @@ -984,7 +1020,7 @@ bool simple_wallet::finalize_multisig(const std::vector &args) try { - if (!m_wallet->finalize_multisig(orig_pwd_container->password(), args)) + if (!m_wallet->finalize_multisig(pwd_container->password(), args)) { fail_msg_writer() << tr("Failed to finalize multisig"); return true; @@ -1022,8 +1058,8 @@ bool simple_wallet::export_multisig(const std::vector &args) fail_msg_writer() << tr("usage: export_multisig_info "); return true; } - if (m_wallet->ask_password() && !get_and_verify_password()) - return true; + + SCOPED_WALLET_UNLOCK(); const std::string filename = args[0]; if (m_wallet->confirm_export_overwrite() && !check_file_overwrite(filename)) @@ -1074,8 +1110,8 @@ bool simple_wallet::import_multisig(const std::vector &args) fail_msg_writer() << tr("usage: import_multisig_info [...] - one for each other participant"); return true; } - if (m_wallet->ask_password() && !get_and_verify_password()) - return true; + + SCOPED_WALLET_UNLOCK(); std::vector info; for (size_t n = 0; n < args.size(); ++n) @@ -1091,11 +1127,11 @@ bool simple_wallet::import_multisig(const std::vector &args) info.push_back(std::move(data)); } - LOCK_IDLE_SCOPE(); - // all read and parsed, actually import try { + m_in_manual_refresh.store(true, std::memory_order_relaxed); + epee::misc_utils::auto_scope_leave_caller scope_exit_handler = epee::misc_utils::create_scope_leave_handler([&](){m_in_manual_refresh.store(false, std::memory_order_relaxed);}); size_t n_outputs = m_wallet->import_multisig(info); // Clear line "Height xxx of xxx" std::cout << "\r \r"; @@ -1153,7 +1189,8 @@ bool simple_wallet::sign_multisig(const std::vector &args) fail_msg_writer() << tr("usage: sign_multisig "); return true; } - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } + + SCOPED_WALLET_UNLOCK(); std::string filename = args[0]; std::vector txids; @@ -1226,7 +1263,8 @@ bool simple_wallet::submit_multisig(const std::vector &args) fail_msg_writer() << tr("usage: submit_multisig "); return true; } - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } + + SCOPED_WALLET_UNLOCK(); if (!try_connect_to_daemon()) return true; @@ -1293,7 +1331,8 @@ bool simple_wallet::export_raw_multisig(const std::vector &args) fail_msg_writer() << tr("usage: export_raw_multisig "); return true; } - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } + + SCOPED_WALLET_UNLOCK(); std::string filename = args[0]; if (m_wallet->confirm_export_overwrite() && !check_file_overwrite(filename)) @@ -1915,6 +1954,14 @@ bool simple_wallet::set_ask_password(const std::vector &args/* = st if (pwd_container) { parse_bool_and_use(args[1], [&](bool r) { + const bool cur_r = m_wallet->ask_password(); + if (!m_wallet->watch_only()) + { + if (cur_r && !r) + m_wallet->decrypt_keys(pwd_container->password()); + else if (!cur_r && r) + m_wallet->encrypt_keys(pwd_container->password()); + } m_wallet->ask_password(r); m_wallet->rewrite(m_wallet_file, pwd_container->password()); }); @@ -3173,7 +3220,7 @@ bool simple_wallet::init(const boost::program_options::variables_map& vm) m_wallet_file = m_generate_from_json; try { - m_wallet = tools::wallet2::make_from_json(vm, m_wallet_file, password_prompter); + m_wallet = tools::wallet2::make_from_json(vm, false, m_wallet_file, password_prompter); } catch (const std::exception &e) { @@ -3475,7 +3522,7 @@ boost::optional simple_wallet::get_and_verify_passwor boost::optional simple_wallet::new_wallet(const boost::program_options::variables_map& vm, const crypto::secret_key& recovery_key, bool recover, bool two_random, const std::string &old_language) { - auto rc = tools::wallet2::make_new(vm, password_prompter); + auto rc = tools::wallet2::make_new(vm, false, password_prompter); m_wallet = std::move(rc.first); if (!m_wallet) { @@ -3530,7 +3577,10 @@ boost::optional simple_wallet::new_wallet(const boost::pr recovery_val = m_wallet->generate(m_wallet_file, std::move(rc.second).password(), recovery_key, recover, two_random, create_address_file); message_writer(console_color_white, true) << tr("Generated new wallet: ") << m_wallet->get_account().get_public_address_str(m_wallet->nettype()); - std::cout << tr("View key: ") << string_tools::pod_to_hex(m_wallet->get_account().get_keys().m_view_secret_key) << ENDL; + PAUSE_READLINE(); + std::cout << tr("View key: "); + print_secret_key(m_wallet->get_account().get_keys().m_view_secret_key); + putchar('\n'); } catch (const std::exception& e) { @@ -3567,7 +3617,7 @@ boost::optional simple_wallet::new_wallet(const boost::pr const cryptonote::account_public_address& address, const boost::optional& spendkey, const crypto::secret_key& viewkey) { - auto rc = tools::wallet2::make_new(vm, password_prompter); + auto rc = tools::wallet2::make_new(vm, false, password_prompter); m_wallet = std::move(rc.first); if (!m_wallet) { @@ -3613,7 +3663,7 @@ boost::optional simple_wallet::new_wallet(const boost::pr //---------------------------------------------------------------------------------------------------- boost::optional simple_wallet::new_wallet(const boost::program_options::variables_map& vm, const std::string &device_name) { - auto rc = tools::wallet2::make_new(vm, password_prompter); + auto rc = tools::wallet2::make_new(vm, false, password_prompter); m_wallet = std::move(rc.first); if (!m_wallet) { @@ -3649,7 +3699,7 @@ boost::optional simple_wallet::new_wallet(const boost::pr boost::optional simple_wallet::new_wallet(const boost::program_options::variables_map& vm, const epee::wipeable_string &multisig_keys, const std::string &old_language) { - auto rc = tools::wallet2::make_new(vm, password_prompter); + auto rc = tools::wallet2::make_new(vm, false, password_prompter); m_wallet = std::move(rc.first); if (!m_wallet) { @@ -3720,7 +3770,7 @@ bool simple_wallet::open_wallet(const boost::program_options::variables_map& vm) epee::wipeable_string password; try { - auto rc = tools::wallet2::make_from_file(vm, m_wallet_file, password_prompter); + auto rc = tools::wallet2::make_from_file(vm, false, m_wallet_file, password_prompter); m_wallet = std::move(rc.first); password = std::move(std::move(rc.second).password()); if (!m_wallet) @@ -3747,7 +3797,12 @@ bool simple_wallet::open_wallet(const boost::program_options::variables_map& vm) // NOTE: this is_deprecated() refers to the wallet file format before becoming JSON. It does not refer to the "old english" seed words form of "deprecated" used elsewhere. if (m_wallet->is_deprecated()) { - if (m_wallet->is_deterministic()) + bool is_deterministic; + { + SCOPED_WALLET_UNLOCK(); + is_deterministic = m_wallet->is_deterministic(); + } + if (is_deterministic) { message_writer(console_color_green, false) << "\n" << tr("You had been using " "a deprecated version of the wallet. Please proceed to upgrade your wallet.\n"); @@ -3985,7 +4040,7 @@ bool simple_wallet::set_daemon(const std::vector& args) daemon_url = args[0]; } LOCK_IDLE_SCOPE(); - m_wallet->init(daemon_url); + m_wallet->init(false, daemon_url); if (args.size() == 2) { @@ -4099,6 +4154,32 @@ void simple_wallet::on_skip_transaction(uint64_t height, const crypto::hash &txi { } //---------------------------------------------------------------------------------------------------- +boost::optional simple_wallet::on_get_password(const char *reason) +{ + // can't ask for password from a background thread + if (!m_in_manual_refresh.load(std::memory_order_relaxed)) + { + message_writer(console_color_red, false) << tr("Password needed - use the refresh command"); + m_cmd_binder.print_prompt(); + return boost::none; + } + +#ifdef HAVE_READLINE + rdln::suspend_readline pause_readline; +#endif + std::string msg = tr("Enter password"); + if (reason && *reason) + msg += std::string(" (") + reason + ")"; + auto pwd_container = tools::password_container::prompt(false, msg.c_str()); + if (!pwd_container) + { + MERROR("Failed to read password"); + return boost::none; + } + + return pwd_container->password(); +} +//---------------------------------------------------------------------------------------------------- bool simple_wallet::refresh_main(uint64_t start_height, bool reset, bool is_init) { if (!try_connect_to_daemon(is_init)) @@ -4574,11 +4655,10 @@ bool simple_wallet::print_ring_members(const std::vector &args_) { // "transfer [index=[,,...]] [] []
[]" - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } if (!try_connect_to_daemon()) return true; - LOCK_IDLE_SCOPE(); + SCOPED_WALLET_UNLOCK(); std::vector local_args = args_; @@ -4981,11 +5061,11 @@ bool simple_wallet::locked_sweep_all(const std::vector &args_) bool simple_wallet::sweep_unmixable(const std::vector &args_) { - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } if (!try_connect_to_daemon()) return true; - LOCK_IDLE_SCOPE(); + SCOPED_WALLET_UNLOCK(); + try { // figure out what tx will be necessary @@ -5098,7 +5178,6 @@ bool simple_wallet::sweep_main(uint64_t below, bool locked, const std::vectorask_password() && !get_and_verify_password()) { return true; } if (!try_connect_to_daemon()) return true; @@ -5262,7 +5341,7 @@ bool simple_wallet::sweep_main(uint64_t below, bool locked, const std::vector &args_) { - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } + SCOPED_WALLET_UNLOCK(); if (!try_connect_to_daemon()) return true; @@ -5790,7 +5869,8 @@ bool simple_wallet::sign_transfer(const std::vector &args_) fail_msg_writer() << tr("usage: sign_transfer [export_raw]"); return true; } - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } + + SCOPED_WALLET_UNLOCK(); const bool export_raw = args_.size() == 1; std::vector ptx; @@ -5879,7 +5959,6 @@ bool simple_wallet::get_tx_key(const std::vector &args_) fail_msg_writer() << tr("usage: get_tx_key "); return true; } - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } crypto::hash txid; if (!epee::string_tools::hex_to_pod(local_args[0], txid)) @@ -5888,7 +5967,7 @@ bool simple_wallet::get_tx_key(const std::vector &args_) return true; } - LOCK_IDLE_SCOPE(); + SCOPED_WALLET_UNLOCK(); crypto::secret_key tx_key; std::vector additional_tx_keys; @@ -5993,7 +6072,7 @@ bool simple_wallet::get_tx_proof(const std::vector &args) return true; } - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } + SCOPED_WALLET_UNLOCK(); try { @@ -6208,7 +6287,7 @@ bool simple_wallet::get_spend_proof(const std::vector &args) return true; } - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } + SCOPED_WALLET_UNLOCK(); try { @@ -6303,9 +6382,7 @@ bool simple_wallet::get_reserve_proof(const std::vector &args) return true; } - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } - - LOCK_IDLE_SCOPE(); + SCOPED_WALLET_UNLOCK(); try { @@ -6558,6 +6635,9 @@ bool simple_wallet::show_transfers(const std::vector &args_) if (pool) { try { + m_in_manual_refresh.store(true, std::memory_order_relaxed); + epee::misc_utils::auto_scope_leave_caller scope_exit_handler = epee::misc_utils::create_scope_leave_handler([&](){m_in_manual_refresh.store(false, std::memory_order_relaxed);}); + m_wallet->update_pool_state(); std::list> payments; m_wallet->get_unconfirmed_payments(payments, m_current_subaddress_account, subaddr_indices); @@ -7406,7 +7486,8 @@ bool simple_wallet::sign(const std::vector &args) fail_msg_writer() << tr("This wallet is multisig and cannot sign"); return true; } - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } + + SCOPED_WALLET_UNLOCK(); std::string filename = args[0]; std::string data; bool r = epee::file_io_utils::load_file_to_string(filename, data); @@ -7475,14 +7556,14 @@ bool simple_wallet::export_key_images(const std::vector &args) fail_msg_writer() << tr("wallet is watch-only and cannot export key images"); return true; } - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } + + SCOPED_WALLET_UNLOCK(); std::string filename = args[0]; if (m_wallet->confirm_export_overwrite() && !check_file_overwrite(filename)) return true; try { - LOCK_IDLE_SCOPE(); if (!m_wallet->export_key_images(filename)) { fail_msg_writer() << tr("failed to save file ") << filename; @@ -7554,12 +7635,12 @@ bool simple_wallet::export_outputs(const std::vector &args) fail_msg_writer() << tr("usage: export_outputs "); return true; } - if (m_wallet->ask_password() && !get_and_verify_password()) { return true; } + + SCOPED_WALLET_UNLOCK(); std::string filename = args[0]; if (m_wallet->confirm_export_overwrite() && !check_file_overwrite(filename)) return true; - LOCK_IDLE_SCOPE(); try { std::string data = m_wallet->export_outputs_to_str(); @@ -7605,7 +7686,7 @@ bool simple_wallet::import_outputs(const std::vector &args) try { - LOCK_IDLE_SCOPE(); + SCOPED_WALLET_UNLOCK(); size_t n_outputs = m_wallet->import_outputs_from_str(data); success_msg_writer() << boost::lexical_cast(n_outputs) << " outputs imported"; } diff --git a/src/simplewallet/simplewallet.h b/src/simplewallet/simplewallet.h index c8e17ea6e..99fc19c00 100644 --- a/src/simplewallet/simplewallet.h +++ b/src/simplewallet/simplewallet.h @@ -262,6 +262,7 @@ namespace cryptonote virtual void on_unconfirmed_money_received(uint64_t height, const crypto::hash &txid, const cryptonote::transaction& tx, uint64_t amount, const cryptonote::subaddress_index& subaddr_index); virtual void on_money_spent(uint64_t height, const crypto::hash &txid, const cryptonote::transaction& in_tx, uint64_t amount, const cryptonote::transaction& spend_tx, const cryptonote::subaddress_index& subaddr_index); virtual void on_skip_transaction(uint64_t height, const crypto::hash &txid, const cryptonote::transaction& tx); + virtual boost::optional on_get_password(const char *reason); //---------------------------------------------------------- friend class refresh_progress_reporter_t; diff --git a/src/wallet/api/wallet.cpp b/src/wallet/api/wallet.cpp index e75bee5c9..bfd0e4aff 100644 --- a/src/wallet/api/wallet.cpp +++ b/src/wallet/api/wallet.cpp @@ -2032,7 +2032,8 @@ bool WalletImpl::isNewWallet() const bool WalletImpl::doInit(const string &daemon_address, uint64_t upper_transaction_size_limit, bool ssl) { - if (!m_wallet->init(daemon_address, m_daemon_login, upper_transaction_size_limit, ssl)) + // claim RPC so there's no in-memory encryption for now + if (!m_wallet->init(true, daemon_address, m_daemon_login, upper_transaction_size_limit, ssl)) return false; // in case new wallet, this will force fast-refresh (pulling hashes instead of blocks) diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp index e61e437c0..ea3cca1ce 100644 --- a/src/wallet/wallet2.cpp +++ b/src/wallet/wallet2.cpp @@ -89,6 +89,7 @@ using namespace cryptonote; // arbitrary, used to generate different hashes from the same input #define CHACHA8_KEY_TAIL 0x8c +#define CACHE_KEY_TAIL 0x8d #define UNSIGNED_TX_PREFIX "Monero unsigned tx set\004" #define SIGNED_TX_PREFIX "Monero signed tx set\004" @@ -121,8 +122,6 @@ using namespace cryptonote; static const std::string MULTISIG_SIGNATURE_MAGIC = "SigMultisigPkV1"; -std::atomic tools::wallet2::key_ref::refs(0); - namespace { std::string get_default_ringdb_path() @@ -197,7 +196,7 @@ std::string get_size_string(const cryptonote::blobdata &tx) return get_size_string(tx.size()); } -std::unique_ptr make_basic(const boost::program_options::variables_map& vm, const options& opts, const std::function(const char *, bool)> &password_prompter) +std::unique_ptr make_basic(const boost::program_options::variables_map& vm, bool rpc, const options& opts, const std::function(const char *, bool)> &password_prompter) { const bool testnet = command_line::get_arg(vm, opts.testnet); const bool stagenet = command_line::get_arg(vm, opts.stagenet); @@ -238,7 +237,7 @@ std::unique_ptr make_basic(const boost::program_options::variabl daemon_address = std::string("http://") + daemon_host + ":" + std::to_string(daemon_port); std::unique_ptr wallet(new tools::wallet2(nettype, kdf_rounds)); - wallet->init(std::move(daemon_address), std::move(login)); + wallet->init(rpc, std::move(daemon_address), std::move(login)); boost::filesystem::path ringdb_path = command_line::get_arg(vm, opts.shared_ringdb_dir); wallet->set_ring_database(ringdb_path.string()); return wallet; @@ -273,7 +272,7 @@ boost::optional get_password(const boost::program_opt return password_prompter(verify ? tr("Enter a new password for the wallet") : tr("Wallet password"), verify); } -std::unique_ptr generate_from_json(const std::string& json_file, const boost::program_options::variables_map& vm, const options& opts, const std::function(const char *, bool)> &password_prompter) +std::unique_ptr generate_from_json(const std::string& json_file, const boost::program_options::variables_map& vm, bool rpc, const options& opts, const std::function(const char *, bool)> &password_prompter) { const bool testnet = command_line::get_arg(vm, opts.testnet); const bool stagenet = command_line::get_arg(vm, opts.stagenet); @@ -411,7 +410,7 @@ std::unique_ptr generate_from_json(const std::string& json_file, THROW_WALLET_EXCEPTION_IF(deprecated_wallet, tools::error::wallet_internal_error, tools::wallet2::tr("Cannot generate deprecated wallets from JSON")); - wallet.reset(make_basic(vm, opts, password_prompter).release()); + wallet.reset(make_basic(vm, rpc, opts, password_prompter).release()); wallet->set_refresh_from_block_height(field_scan_from_height); wallet->explicit_refresh_from_block_height(field_scan_from_height_found); @@ -648,6 +647,34 @@ const size_t MAX_SPLIT_ATTEMPTS = 30; constexpr const std::chrono::seconds wallet2::rpc_timeout; const char* wallet2::tr(const char* str) { return i18n_translate(str, "tools::wallet2"); } +wallet_keys_unlocker::wallet_keys_unlocker(wallet2 &w, const boost::optional &password): + w(w), + locked(password != boost::none) +{ + if (!locked || w.is_rpc()) + return; + const epee::wipeable_string pass = password->password(); + w.generate_chacha_key_from_password(pass, key); + w.decrypt_keys(key); +} + +wallet_keys_unlocker::wallet_keys_unlocker(wallet2 &w, bool locked, const epee::wipeable_string &password): + w(w), + locked(locked) +{ + if (!locked) + return; + w.generate_chacha_key_from_password(password, key); + w.decrypt_keys(key); +} + +wallet_keys_unlocker::~wallet_keys_unlocker() +{ + if (!locked) + return; + w.encrypt_keys(key); +} + wallet2::wallet2(network_type nettype, uint64_t kdf_rounds): m_multisig_rescan_info(NULL), m_multisig_rescan_k(NULL), @@ -693,7 +720,9 @@ wallet2::wallet2(network_type nettype, uint64_t kdf_rounds): m_key_on_device(false), m_ring_history_saved(false), m_ringdb(), - m_last_block_reward(0) + m_last_block_reward(0), + m_encrypt_keys_after_refresh(boost::none), + m_rpc(false) { } @@ -726,14 +755,14 @@ void wallet2::init_options(boost::program_options::options_description& desc_par command_line::add_arg(desc_params, opts.kdf_rounds); } -std::unique_ptr wallet2::make_from_json(const boost::program_options::variables_map& vm, const std::string& json_file, const std::function(const char *, bool)> &password_prompter) +std::unique_ptr wallet2::make_from_json(const boost::program_options::variables_map& vm, bool rpc, const std::string& json_file, const std::function(const char *, bool)> &password_prompter) { const options opts{}; - return generate_from_json(json_file, vm, opts, password_prompter); + return generate_from_json(json_file, vm, rpc, opts, password_prompter); } std::pair, password_container> wallet2::make_from_file( - const boost::program_options::variables_map& vm, const std::string& wallet_file, const std::function(const char *, bool)> &password_prompter) + const boost::program_options::variables_map& vm, bool rpc, const std::string& wallet_file, const std::function(const char *, bool)> &password_prompter) { const options opts{}; auto pwd = get_password(vm, opts, password_prompter, false); @@ -741,7 +770,7 @@ std::pair, password_container> wallet2::make_from_file( { return {nullptr, password_container{}}; } - auto wallet = make_basic(vm, opts, password_prompter); + auto wallet = make_basic(vm, rpc, opts, password_prompter); if (wallet) { wallet->load(wallet_file, pwd->password()); @@ -749,7 +778,7 @@ std::pair, password_container> wallet2::make_from_file( return {std::move(wallet), std::move(*pwd)}; } -std::pair, password_container> wallet2::make_new(const boost::program_options::variables_map& vm, const std::function(const char *, bool)> &password_prompter) +std::pair, password_container> wallet2::make_new(const boost::program_options::variables_map& vm, bool rpc, const std::function(const char *, bool)> &password_prompter) { const options opts{}; auto pwd = get_password(vm, opts, password_prompter, true); @@ -757,18 +786,19 @@ std::pair, password_container> wallet2::make_new(const { return {nullptr, password_container{}}; } - return {make_basic(vm, opts, password_prompter), std::move(*pwd)}; + return {make_basic(vm, rpc, opts, password_prompter), std::move(*pwd)}; } -std::unique_ptr wallet2::make_dummy(const boost::program_options::variables_map& vm, const std::function(const char *, bool)> &password_prompter) +std::unique_ptr wallet2::make_dummy(const boost::program_options::variables_map& vm, bool rpc, const std::function(const char *, bool)> &password_prompter) { const options opts{}; - return make_basic(vm, opts, password_prompter); + return make_basic(vm, rpc, opts, password_prompter); } //---------------------------------------------------------------------------------------------------- -bool wallet2::init(std::string daemon_address, boost::optional daemon_login, uint64_t upper_transaction_size_limit, bool ssl) +bool wallet2::init(bool rpc, std::string daemon_address, boost::optional daemon_login, uint64_t upper_transaction_size_limit, bool ssl) { + m_rpc = rpc; m_checkpoints.init_default_checkpoints(m_nettype); if(m_http_client.is_connected()) m_http_client.disconnect(); @@ -785,8 +815,7 @@ bool wallet2::is_deterministic() const crypto::secret_key second; keccak((uint8_t *)&get_account().get_keys().m_spend_secret_key, sizeof(crypto::secret_key), (uint8_t *)&second, sizeof(crypto::secret_key)); sc_reduce32((uint8_t *)&second); - bool keys_deterministic = memcmp(second.data,get_account().get_keys().m_view_secret_key.data, sizeof(crypto::secret_key)) == 0; - return keys_deterministic; + return memcmp(second.data,get_account().get_keys().m_view_secret_key.data, sizeof(crypto::secret_key)) == 0; } //---------------------------------------------------------------------------------------------------- bool wallet2::get_seed(epee::wipeable_string& electrum_words, const epee::wipeable_string &passphrase) const @@ -1103,9 +1132,25 @@ static uint64_t decodeRct(const rct::rctSig & rv, const crypto::key_derivation & } } //---------------------------------------------------------------------------------------------------- -void wallet2::scan_output(const cryptonote::transaction &tx, const crypto::public_key &tx_pub_key, size_t i, tx_scan_info_t &tx_scan_info, int &num_vouts_received, std::unordered_map &tx_money_got_in_outs, std::vector &outs) const +void wallet2::scan_output(const cryptonote::transaction &tx, const crypto::public_key &tx_pub_key, size_t i, tx_scan_info_t &tx_scan_info, int &num_vouts_received, std::unordered_map &tx_money_got_in_outs, std::vector &outs) { THROW_WALLET_EXCEPTION_IF(i >= tx.vout.size(), error::wallet_internal_error, "Invalid vout index"); + + // if keys are encrypted, ask for password + if (m_ask_password && !m_rpc && !m_watch_only && !m_multisig_rescan_k) + { + static critical_section password_lock; + CRITICAL_REGION_LOCAL(password_lock); + if (!m_encrypt_keys_after_refresh) + { + boost::optional pwd = m_callback->on_get_password("output received"); + THROW_WALLET_EXCEPTION_IF(!pwd, error::password_needed, tr("Password is needed to compute key image for incoming monero")); + THROW_WALLET_EXCEPTION_IF(!verify_password(*pwd), error::password_needed, tr("Invalid password: password is needed to compute key image for incoming monero")); + decrypt_keys(*pwd); + m_encrypt_keys_after_refresh = *pwd; + } + } + if (m_multisig) { tx_scan_info.in_ephemeral.pub = boost::get(tx.vout[i].target).key; @@ -2063,6 +2108,14 @@ void wallet2::update_pool_state(bool refreshed) { MDEBUG("update_pool_state start"); + auto keys_reencryptor = epee::misc_utils::create_scope_leave_handler([&, this]() { + if (m_encrypt_keys_after_refresh) + { + encrypt_keys(*m_encrypt_keys_after_refresh); + m_encrypt_keys_after_refresh = boost::none; + } + }); + // get the pool state cryptonote::COMMAND_RPC_GET_TRANSACTION_POOL_HASHES_BIN::request req; cryptonote::COMMAND_RPC_GET_TRANSACTION_POOL_HASHES_BIN::response res; @@ -2369,8 +2422,6 @@ bool wallet2::delete_address_book_row(std::size_t row_id) { //---------------------------------------------------------------------------------------------------- void wallet2::refresh(bool trusted_daemon, uint64_t start_height, uint64_t & blocks_fetched, bool& received_money) { - key_ref kref(*this); - if(m_light_wallet) { // MyMonero get_address_info needs to be called occasionally to trigger wallet sync. @@ -2438,6 +2489,14 @@ void wallet2::refresh(bool trusted_daemon, uint64_t start_height, uint64_t & blo // subsequent pulls in this refresh. start_height = 0; + auto keys_reencryptor = epee::misc_utils::create_scope_leave_handler([&, this]() { + if (m_encrypt_keys_after_refresh) + { + encrypt_keys(*m_encrypt_keys_after_refresh); + m_encrypt_keys_after_refresh = boost::none; + } + }); + bool first = true; while(m_run.load(std::memory_order_relaxed)) { @@ -2507,6 +2566,12 @@ void wallet2::refresh(bool trusted_daemon, uint64_t start_height, uint64_t & blo throw std::runtime_error("proxy exception in refresh thread"); } } + catch (const tools::error::password_needed&) + { + blocks_fetched += added_blocks; + waiter.wait(&tpool); + throw; + } catch (const std::exception&) { blocks_fetched += added_blocks; @@ -2728,8 +2793,20 @@ bool wallet2::store_keys(const std::string& keys_file_name, const epee::wipeable std::string multisig_signers; cryptonote::account_base account = m_account; + crypto::chacha_key key; + crypto::generate_chacha_key(password.data(), password.size(), key, m_kdf_rounds); + + if (m_ask_password && !m_rpc && !m_watch_only) + { + account.encrypt_viewkey(key); + account.decrypt_keys(key); + } + if (watch_only) account.forget_spend_key(); + + account.encrypt_keys(key); + bool r = epee::serialization::store_t_to_binary(account, account_data); CHECK_AND_ASSERT_MES(r, false, "failed to serialize wallet keys"); wallet2::keys_file_data keys_file_data = boost::value_initialized(); @@ -2846,6 +2923,9 @@ bool wallet2::store_keys(const std::string& keys_file_name, const epee::wipeable value2.SetUint(m_subaddress_lookahead_minor); json.AddMember("subaddress_lookahead_minor", value2, json.GetAllocator()); + value2.SetUint(1); + json.AddMember("encrypted_secret_keys", value2, json.GetAllocator()); + // Serialize the JSON object rapidjson::StringBuffer buffer; rapidjson::Writer writer(buffer); @@ -2853,7 +2933,6 @@ bool wallet2::store_keys(const std::string& keys_file_name, const epee::wipeable account_data = buffer.GetString(); // Encrypt the entire JSON object. - crypto::chacha_key key; crypto::generate_chacha_key(password.data(), password.size(), key, m_kdf_rounds); std::string cipher; cipher.resize(account_data.size()); @@ -2871,6 +2950,35 @@ bool wallet2::store_keys(const std::string& keys_file_name, const epee::wipeable return true; } //---------------------------------------------------------------------------------------------------- +void wallet2::setup_keys(const epee::wipeable_string &password) +{ + crypto::chacha_key key; + crypto::generate_chacha_key(password.data(), password.size(), key, m_kdf_rounds); + + // re-encrypt, but keep viewkey unencrypted + if (m_ask_password && !m_rpc && !m_watch_only) + { + m_account.encrypt_keys(key); + m_account.decrypt_viewkey(key); + } + + static_assert(HASH_SIZE == sizeof(crypto::chacha_key), "Mismatched sizes of hash and chacha key"); + tools::scrubbed_arr cache_key_data; + memcpy(cache_key_data.data(), &key, HASH_SIZE); + cache_key_data[HASH_SIZE] = CACHE_KEY_TAIL; + cn_fast_hash(cache_key_data.data(), HASH_SIZE+1, (crypto::hash&)m_cache_key); + get_ringdb_key(); +} +//---------------------------------------------------------------------------------------------------- +void wallet2::change_password(const std::string &filename, const epee::wipeable_string &original_password, const epee::wipeable_string &new_password) +{ + if (m_ask_password && !m_rpc && !m_watch_only) + decrypt_keys(original_password); + setup_keys(new_password); + rewrite(filename, new_password); + store(); +} +//---------------------------------------------------------------------------------------------------- /*! * \brief Load wallet information from wallet file. * \param keys_file_name Name of wallet file @@ -2881,6 +2989,7 @@ bool wallet2::load_keys(const std::string& keys_file_name, const epee::wipeable_ rapidjson::Document json; wallet2::keys_file_data keys_file_data; std::string buf; + bool encrypted_secret_keys = false; bool r = epee::file_io_utils::load_file_to_string(keys_file_name, buf); THROW_WALLET_EXCEPTION_IF(!r, error::file_read_error, keys_file_name); @@ -2926,6 +3035,7 @@ bool wallet2::load_keys(const std::string& keys_file_name, const epee::wipeable_ m_subaddress_lookahead_major = SUBADDRESS_LOOKAHEAD_MAJOR; m_subaddress_lookahead_minor = SUBADDRESS_LOOKAHEAD_MINOR; m_key_on_device = false; + encrypted_secret_keys = false; } else if(json.IsObject()) { @@ -3055,6 +3165,8 @@ bool wallet2::load_keys(const std::string& keys_file_name, const epee::wipeable_ m_subaddress_lookahead_major = field_subaddress_lookahead_major; GET_FIELD_FROM_JSON_RETURN_ON_ERROR(json, subaddress_lookahead_minor, uint32_t, Uint, false, SUBADDRESS_LOOKAHEAD_MINOR); m_subaddress_lookahead_minor = field_subaddress_lookahead_minor; + GET_FIELD_FROM_JSON_RETURN_ON_ERROR(json, encrypted_secret_keys, uint32_t, Uint, false, false); + encrypted_secret_keys = field_encrypted_secret_keys; } else { @@ -3071,12 +3183,39 @@ bool wallet2::load_keys(const std::string& keys_file_name, const epee::wipeable_ m_account.set_device(hwdev); LOG_PRINT_L0("Device inited..."); } + + if (r) + { + if (encrypted_secret_keys) + { + m_account.decrypt_keys(key); + } + else + { + // rewrite with encrypted keys, ignore errors + if (m_ask_password && !m_rpc && !m_watch_only) + encrypt_keys(key); + bool saved_ret = store_keys(keys_file_name, password, m_watch_only); + if (!saved_ret) + { + // just moan a bit, but not fatal + MERROR("Error saving keys file with encrypted keys, not fatal"); + } + if (m_ask_password && !m_rpc && !m_watch_only) + decrypt_keys(key); + m_keys_file_locker.reset(); + } + } const cryptonote::account_keys& keys = m_account.get_keys(); hw::device &hwdev = m_account.get_device(); r = r && hwdev.verify_keys(keys.m_view_secret_key, keys.m_account_address.m_view_public_key); if(!m_watch_only && !m_multisig) r = r && hwdev.verify_keys(keys.m_spend_secret_key, keys.m_account_address.m_spend_public_key); THROW_WALLET_EXCEPTION_IF(!r, error::invalid_password); + + if (r) + setup_keys(password); + return true; } @@ -3117,6 +3256,7 @@ bool wallet2::verify_password(const std::string& keys_file_name, const epee::wip rapidjson::Document json; wallet2::keys_file_data keys_file_data; std::string buf; + bool encrypted_secret_keys = false; bool r = epee::file_io_utils::load_file_to_string(keys_file_name, buf); THROW_WALLET_EXCEPTION_IF(!r, error::file_read_error, keys_file_name); @@ -3140,19 +3280,50 @@ bool wallet2::verify_password(const std::string& keys_file_name, const epee::wip { account_data = std::string(json["key_data"].GetString(), json["key_data"].GetString() + json["key_data"].GetStringLength()); + GET_FIELD_FROM_JSON_RETURN_ON_ERROR(json, encrypted_secret_keys, uint32_t, Uint, false, false); + encrypted_secret_keys = field_encrypted_secret_keys; } cryptonote::account_base account_data_check; r = epee::serialization::load_t_from_binary(account_data_check, account_data); - const cryptonote::account_keys& keys = account_data_check.get_keys(); + if (encrypted_secret_keys) + account_data_check.decrypt_keys(key); + + const cryptonote::account_keys& keys = account_data_check.get_keys(); r = r && hwdev.verify_keys(keys.m_view_secret_key, keys.m_account_address.m_view_public_key); if(!no_spend_key) r = r && hwdev.verify_keys(keys.m_spend_secret_key, keys.m_account_address.m_spend_public_key); return r; } +void wallet2::encrypt_keys(const crypto::chacha_key &key) +{ + m_account.encrypt_keys(key); + m_account.decrypt_viewkey(key); +} + +void wallet2::decrypt_keys(const crypto::chacha_key &key) +{ + m_account.encrypt_viewkey(key); + m_account.decrypt_keys(key); +} + +void wallet2::encrypt_keys(const epee::wipeable_string &password) +{ + crypto::chacha_key key; + crypto::generate_chacha_key(password.data(), password.size(), key, m_kdf_rounds); + encrypt_keys(key); +} + +void wallet2::decrypt_keys(const epee::wipeable_string &password) +{ + crypto::chacha_key key; + crypto::generate_chacha_key(password.data(), password.size(), key, m_kdf_rounds); + decrypt_keys(key); +} + /*! * \brief Generates a wallet or restores one. * \param wallet_ Name of wallet file @@ -3227,6 +3398,7 @@ void wallet2::generate(const std::string& wallet_, const epee::wipeable_string& m_multisig_threshold = threshold; m_multisig_signers = multisig_signers; m_key_on_device = false; + setup_keys(password); if (!wallet_.empty()) { @@ -3281,6 +3453,7 @@ crypto::secret_key wallet2::generate(const std::string& wallet_, const epee::wip m_multisig_threshold = 0; m_multisig_signers.clear(); m_key_on_device = false; + setup_keys(password); // calculate a starting refresh height if(m_refresh_from_block_height == 0 && !recover){ @@ -3382,6 +3555,7 @@ void wallet2::generate(const std::string& wallet_, const epee::wipeable_string& m_multisig_threshold = 0; m_multisig_signers.clear(); m_key_on_device = false; + setup_keys(password); if (!wallet_.empty()) { @@ -3435,6 +3609,7 @@ void wallet2::generate(const std::string& wallet_, const epee::wipeable_string& m_multisig_threshold = 0; m_multisig_signers.clear(); m_key_on_device = false; + setup_keys(password); if (!wallet_.empty()) { @@ -3481,6 +3656,7 @@ void wallet2::restore(const std::string& wallet_, const epee::wipeable_string& p m_multisig = false; m_multisig_threshold = 0; m_multisig_signers.clear(); + setup_keys(password); if (!wallet_.empty()) { bool r = store_keys(m_keys_file, password, false); @@ -3520,6 +3696,17 @@ std::string wallet2::make_multisig(const epee::wipeable_string &password, clear(); + // decrypt keys + epee::misc_utils::auto_scope_leave_caller keys_reencryptor; + if (m_ask_password && !m_rpc && !m_watch_only) + { + crypto::chacha_key chacha_key; + crypto::generate_chacha_key(password.data(), password.size(), chacha_key, m_kdf_rounds); + m_account.encrypt_viewkey(chacha_key); + m_account.decrypt_keys(chacha_key); + keys_reencryptor = epee::misc_utils::create_scope_leave_handler([&, this, chacha_key]() { m_account.encrypt_keys(chacha_key); m_account.decrypt_viewkey(chacha_key); }); + } + MINFO("Creating spend key..."); std::vector multisig_keys; rct::key spend_pkey, spend_skey; @@ -3580,6 +3767,9 @@ std::string wallet2::make_multisig(const epee::wipeable_string &password, m_multisig_signers = std::vector(spend_keys.size() + 1, crypto::null_pkey); } + // re-encrypt keys + keys_reencryptor = epee::misc_utils::auto_scope_leave_caller(); + if (!m_wallet_file.empty()) { bool r = store_keys(m_keys_file, password, false); @@ -3662,6 +3852,17 @@ bool wallet2::finalize_multisig(const epee::wipeable_string &password, std::unor { CHECK_AND_ASSERT_THROW_MES(!pkeys.empty(), "empty pkeys"); + // keys are decrypted + epee::misc_utils::auto_scope_leave_caller keys_reencryptor; + if (m_ask_password && !m_rpc && !m_watch_only) + { + crypto::chacha_key chacha_key; + crypto::generate_chacha_key(password.data(), password.size(), chacha_key, m_kdf_rounds); + m_account.encrypt_viewkey(chacha_key); + m_account.decrypt_keys(chacha_key); + keys_reencryptor = epee::misc_utils::create_scope_leave_handler([&, this, chacha_key]() { m_account.encrypt_keys(chacha_key); m_account.decrypt_viewkey(chacha_key); }); + } + // add ours if not included crypto::public_key local_signer; CHECK_AND_ASSERT_THROW_MES(crypto::secret_key_to_public_key(get_account().get_keys().m_spend_secret_key, local_signer), @@ -3684,6 +3885,9 @@ bool wallet2::finalize_multisig(const epee::wipeable_string &password, std::unor m_multisig_signers = signers; std::sort(m_multisig_signers.begin(), m_multisig_signers.end(), [](const crypto::public_key &e0, const crypto::public_key &e1){ return memcmp(&e0, &e1, sizeof(e0)); }); + // keys are encrypted again + keys_reencryptor = epee::misc_utils::auto_scope_leave_caller(); + if (!m_wallet_file.empty()) { bool r = store_keys(m_keys_file, password, false); @@ -3995,6 +4199,11 @@ bool wallet2::generate_chacha_key_from_secret_keys(crypto::chacha_key &key) cons return hwdev.generate_chacha_key(m_account.get_keys(), key, m_kdf_rounds); } //---------------------------------------------------------------------------------------------------- +void wallet2::generate_chacha_key_from_password(const epee::wipeable_string &pass, crypto::chacha_key &key) const +{ + crypto::generate_chacha_key(pass.data(), pass.size(), key, m_kdf_rounds); +} +//---------------------------------------------------------------------------------------------------- void wallet2::load(const std::string& wallet_, const epee::wipeable_string& password) { clear(); @@ -4015,6 +4224,8 @@ void wallet2::load(const std::string& wallet_, const epee::wipeable_string& pass LOG_PRINT_L0("Loaded wallet keys file, with public address: " << m_account.get_public_address_str(m_nettype)); lock_keys_file(); + wallet_keys_unlocker unlocker(*this, m_ask_password && !m_rpc && !m_watch_only, password); + //keys loaded ok! //try to load wallet file. but even if we failed, it is not big problem if(!boost::filesystem::exists(m_wallet_file, e) || e) @@ -4036,11 +4247,9 @@ void wallet2::load(const std::string& wallet_, const epee::wipeable_string& pass r = ::serialization::parse_binary(buf, cache_file_data); THROW_WALLET_EXCEPTION_IF(!r, error::wallet_internal_error, "internal error: failed to deserialize \"" + m_wallet_file + '\"'); - crypto::chacha_key key; - generate_chacha_key_from_secret_keys(key); std::string cache_data; cache_data.resize(cache_file_data.cache_data.size()); - crypto::chacha20(cache_file_data.cache_data.data(), cache_file_data.cache_data.size(), key, cache_file_data.iv, &cache_data[0]); + crypto::chacha20(cache_file_data.cache_data.data(), cache_file_data.cache_data.size(), m_cache_key, cache_file_data.iv, &cache_data[0]); try { std::stringstream iss; @@ -4048,11 +4257,13 @@ void wallet2::load(const std::string& wallet_, const epee::wipeable_string& pass boost::archive::portable_binary_iarchive ar(iss); ar >> *this; } - catch (...) + catch(...) { - crypto::chacha8(cache_file_data.cache_data.data(), cache_file_data.cache_data.size(), key, cache_file_data.iv, &cache_data[0]); - try - { + // try with previous scheme: direct from keys + crypto::chacha_key key; + generate_chacha_key_from_secret_keys(key); + crypto::chacha20(cache_file_data.cache_data.data(), cache_file_data.cache_data.size(), key, cache_file_data.iv, &cache_data[0]); + try { std::stringstream iss; iss << cache_data; boost::archive::portable_binary_iarchive ar(iss); @@ -4060,13 +4271,24 @@ void wallet2::load(const std::string& wallet_, const epee::wipeable_string& pass } catch (...) { - LOG_PRINT_L0("Failed to open portable binary, trying unportable"); - boost::filesystem::copy_file(m_wallet_file, m_wallet_file + ".unportable", boost::filesystem::copy_option::overwrite_if_exists); - std::stringstream iss; - iss.str(""); - iss << cache_data; - boost::archive::binary_iarchive ar(iss); - ar >> *this; + crypto::chacha8(cache_file_data.cache_data.data(), cache_file_data.cache_data.size(), key, cache_file_data.iv, &cache_data[0]); + try + { + std::stringstream iss; + iss << cache_data; + boost::archive::portable_binary_iarchive ar(iss); + ar >> *this; + } + catch (...) + { + LOG_PRINT_L0("Failed to open portable binary, trying unportable"); + boost::filesystem::copy_file(m_wallet_file, m_wallet_file + ".unportable", boost::filesystem::copy_option::overwrite_if_exists); + std::stringstream iss; + iss.str(""); + iss << cache_data; + boost::archive::binary_iarchive ar(iss); + ar >> *this; + } } } } @@ -4218,12 +4440,10 @@ void wallet2::store_to(const std::string &path, const epee::wipeable_string &pas wallet2::cache_file_data cache_file_data = boost::value_initialized(); cache_file_data.cache_data = oss.str(); - crypto::chacha_key key; - generate_chacha_key_from_secret_keys(key); std::string cipher; cipher.resize(cache_file_data.cache_data.size()); cache_file_data.iv = crypto::rand(); - crypto::chacha20(cache_file_data.cache_data.data(), cache_file_data.cache_data.size(), key, cache_file_data.iv, &cipher[0]); + crypto::chacha20(cache_file_data.cache_data.data(), cache_file_data.cache_data.size(), m_cache_key, cache_file_data.iv, &cipher[0]); cache_file_data.cache_data = cipher; const std::string new_file = same_file ? m_wallet_file + ".new" : path; @@ -5861,12 +6081,6 @@ crypto::chacha_key wallet2::get_ringdb_key() return *m_ringdb_key; } -void wallet2::clear_ringdb_key() -{ - MINFO("clearing ringdb key"); - m_ringdb_key = boost::none; -} - bool wallet2::add_rings(const crypto::chacha_key &key, const cryptonote::transaction_prefix &tx) { if (!m_ringdb) @@ -5877,7 +6091,6 @@ bool wallet2::add_rings(const crypto::chacha_key &key, const cryptonote::transac bool wallet2::add_rings(const cryptonote::transaction_prefix &tx) { - key_ref kref(*this); try { return add_rings(get_ringdb_key(), tx); } catch (const std::exception &e) { return false; } } @@ -5886,7 +6099,6 @@ bool wallet2::remove_rings(const cryptonote::transaction_prefix &tx) { if (!m_ringdb) return false; - key_ref kref(*this); try { return m_ringdb->remove_rings(get_ringdb_key(), tx); } catch (const std::exception &e) { return false; } } @@ -5924,7 +6136,6 @@ bool wallet2::get_rings(const crypto::hash &txid, std::vector &outs) { - key_ref kref(*this); try { return get_ring(get_ringdb_key(), key_image, outs); } catch (const std::exception &e) { return false; } } @@ -5934,7 +6145,6 @@ bool wallet2::set_ring(const crypto::key_image &key_image, const std::vectorset_ring(get_ringdb_key(), key_image, outs, relative); } catch (const std::exception &e) { return false; } } @@ -5946,7 +6156,6 @@ bool wallet2::find_and_save_rings(bool force) if (!m_ringdb) return false; - key_ref kref(*this); COMMAND_RPC_GET_TRANSACTIONS::request req = AUTO_VAL_INIT(req); COMMAND_RPC_GET_TRANSACTIONS::response res = AUTO_VAL_INIT(res); @@ -10662,6 +10871,7 @@ size_t wallet2::import_multisig(std::vector blobs) m_multisig_rescan_info = &info; try { + refresh(false); } catch (...) {} diff --git a/src/wallet/wallet2.h b/src/wallet/wallet2.h index 86fee0da7..2d45f4e3e 100644 --- a/src/wallet/wallet2.h +++ b/src/wallet/wallet2.h @@ -67,6 +67,19 @@ class Serialization_portability_wallet_Test; namespace tools { class ringdb; + class wallet2; + + class wallet_keys_unlocker + { + public: + wallet_keys_unlocker(wallet2 &w, const boost::optional &password); + wallet_keys_unlocker(wallet2 &w, bool locked, const epee::wipeable_string &password); + ~wallet_keys_unlocker(); + private: + wallet2 &w; + bool locked; + crypto::chacha_key key; + }; class i_wallet2_callback { @@ -77,6 +90,7 @@ namespace tools virtual void on_unconfirmed_money_received(uint64_t height, const crypto::hash &txid, const cryptonote::transaction& tx, uint64_t amount, const cryptonote::subaddress_index& subaddr_index) {} virtual void on_money_spent(uint64_t height, const crypto::hash &txid, const cryptonote::transaction& in_tx, uint64_t amount, const cryptonote::transaction& spend_tx, const cryptonote::subaddress_index& subaddr_index) {} virtual void on_skip_transaction(uint64_t height, const crypto::hash &txid, const cryptonote::transaction& tx) {} + virtual boost::optional on_get_password(const char *reason) { return boost::none; } // Light wallet callbacks virtual void on_lw_new_block(uint64_t height) {} virtual void on_lw_money_received(uint64_t height, const crypto::hash &txid, uint64_t amount) {} @@ -133,9 +147,11 @@ namespace tools std::deque m_blockchain; }; + class wallet_keys_unlocker; class wallet2 { friend class ::Serialization_portability_wallet_Test; + friend class wallet_keys_unlocker; public: static constexpr const std::chrono::seconds rpc_timeout = std::chrono::minutes(3) + std::chrono::seconds(30); @@ -153,17 +169,17 @@ namespace tools static void init_options(boost::program_options::options_description& desc_params); //! Uses stdin and stdout. Returns a wallet2 if no errors. - static std::unique_ptr make_from_json(const boost::program_options::variables_map& vm, const std::string& json_file, const std::function(const char *, bool)> &password_prompter); + static std::unique_ptr make_from_json(const boost::program_options::variables_map& vm, bool rpc, const std::string& json_file, const std::function(const char *, bool)> &password_prompter); //! Uses stdin and stdout. Returns a wallet2 and password for `wallet_file` if no errors. static std::pair, password_container> - make_from_file(const boost::program_options::variables_map& vm, const std::string& wallet_file, const std::function(const char *, bool)> &password_prompter); + make_from_file(const boost::program_options::variables_map& vm, bool rpc, const std::string& wallet_file, const std::function(const char *, bool)> &password_prompter); //! Uses stdin and stdout. Returns a wallet2 and password for wallet with no file if no errors. - static std::pair, password_container> make_new(const boost::program_options::variables_map& vm, const std::function(const char *, bool)> &password_prompter); + static std::pair, password_container> make_new(const boost::program_options::variables_map& vm, bool rpc, const std::function(const char *, bool)> &password_prompter); //! Just parses variables. - static std::unique_ptr make_dummy(const boost::program_options::variables_map& vm, const std::function(const char *, bool)> &password_prompter); + static std::unique_ptr make_dummy(const boost::program_options::variables_map& vm, bool rpc, const std::function(const char *, bool)> &password_prompter); static bool verify_password(const std::string& keys_file_name, const epee::wipeable_string& password, bool no_spend_key, hw::device &hwdev, uint64_t kdf_rounds); @@ -477,16 +493,6 @@ namespace tools std::vector additional; }; - struct key_ref - { - key_ref(tools::wallet2 &w): wallet(w) { ++refs; } - ~key_ref() { if (!--refs) wallet.clear_ringdb_key(); } - - private: - tools::wallet2 &wallet; - static std::atomic refs; - }; - /*! * \brief Generates a wallet or restores one. * \param wallet_ Name of wallet file @@ -613,6 +619,11 @@ namespace tools cryptonote::account_base& get_account(){return m_account;} const cryptonote::account_base& get_account()const{return m_account;} + void encrypt_keys(const crypto::chacha_key &key); + void encrypt_keys(const epee::wipeable_string &password); + void decrypt_keys(const crypto::chacha_key &key); + void decrypt_keys(const epee::wipeable_string &password); + void set_refresh_from_block_height(uint64_t height) {m_refresh_from_block_height = height;} uint64_t get_refresh_from_block_height() const {return m_refresh_from_block_height;} @@ -625,7 +636,7 @@ namespace tools // into account the current median block size rather than // the minimum block size. bool deinit(); - bool init(std::string daemon_address = "http://localhost:8080", + bool init(bool rpc, std::string daemon_address = "http://localhost:8080", boost::optional daemon_login = boost::none, uint64_t upper_transaction_size_limit = 0, bool ssl = false); void stop() { m_run.store(false, std::memory_order_relaxed); } @@ -1077,6 +1088,8 @@ namespace tools uint64_t adjust_mixin(uint64_t mixin) const; uint32_t adjust_priority(uint32_t priority); + bool is_rpc() const { return m_rpc; } + // Light wallet specific functions // fetch unspent outs from lw node and store in m_transfers void light_wallet_get_unspent_outs(); @@ -1153,6 +1166,9 @@ namespace tools bool lock_keys_file(); bool unlock_keys_file(); bool is_keys_file_locked() const; + + void change_password(const std::string &filename, const epee::wipeable_string &original_password, const epee::wipeable_string &new_password); + private: /*! * \brief Stores wallet information to wallet file. @@ -1187,6 +1203,7 @@ namespace tools void generate_genesis(cryptonote::block& b) const; void check_genesis(const crypto::hash& genesis_hash) const; //throws bool generate_chacha_key_from_secret_keys(crypto::chacha_key &key) const; + void generate_chacha_key_from_password(const epee::wipeable_string &pass, crypto::chacha_key &key) const; crypto::hash get_payment_id(const pending_tx &ptx) const; void check_acc_out_precomp(const cryptonote::tx_out &o, const crypto::key_derivation &derivation, const std::vector &additional_derivations, size_t i, tx_scan_info_t &tx_scan_info) const; void check_acc_out_precomp(const cryptonote::tx_out &o, const crypto::key_derivation &derivation, const std::vector &additional_derivations, size_t i, const is_out_data *is_out_data, tx_scan_info_t &tx_scan_info) const; @@ -1204,7 +1221,7 @@ namespace tools crypto::public_key get_tx_pub_key_from_received_outs(const tools::wallet2::transfer_details &td) const; bool should_pick_a_second_output(bool use_rct, size_t n_transfers, const std::vector &unused_transfers_indices, const std::vector &unused_dust_indices) const; std::vector get_only_rct(const std::vector &unused_dust_indices, const std::vector &unused_transfers_indices) const; - void scan_output(const cryptonote::transaction &tx, const crypto::public_key &tx_pub_key, size_t i, tx_scan_info_t &tx_scan_info, int &num_vouts_received, std::unordered_map &tx_money_got_in_outs, std::vector &outs) const; + void scan_output(const cryptonote::transaction &tx, const crypto::public_key &tx_pub_key, size_t i, tx_scan_info_t &tx_scan_info, int &num_vouts_received, std::unordered_map &tx_money_got_in_outs, std::vector &outs); void trim_hashchain(); crypto::key_image get_multisig_composite_key_image(size_t n) const; rct::multisig_kLRki get_multisig_composite_kLRki(size_t n, const crypto::public_key &ignore, std::unordered_set &used_L, std::unordered_set &new_used_L) const; @@ -1216,8 +1233,7 @@ namespace tools bool remove_rings(const cryptonote::transaction_prefix &tx); bool get_ring(const crypto::chacha_key &key, const crypto::key_image &key_image, std::vector &outs); crypto::chacha_key get_ringdb_key(); - void cache_ringdb_key(); - void clear_ringdb_key(); + void setup_keys(const epee::wipeable_string &password); bool get_rct_distribution(uint64_t &start_height, std::vector &distribution); @@ -1320,6 +1336,11 @@ namespace tools uint64_t m_last_block_reward; std::unique_ptr m_keys_file_locker; + + crypto::chacha_key m_cache_key; + boost::optional m_encrypt_keys_after_refresh; + + bool m_rpc; }; } BOOST_CLASS_VERSION(tools::wallet2, 25) diff --git a/src/wallet/wallet_errors.h b/src/wallet/wallet_errors.h index e80652750..243953280 100644 --- a/src/wallet/wallet_errors.h +++ b/src/wallet/wallet_errors.h @@ -53,6 +53,7 @@ namespace tools // wallet_not_initialized // multisig_export_needed // multisig_import_needed + // password_needed // std::logic_error // wallet_logic_error * // file_exists @@ -209,6 +210,14 @@ namespace tools } }; //---------------------------------------------------------------------------------------------------- + struct password_needed : public wallet_runtime_error + { + explicit password_needed(std::string&& loc, const std::string &msg = "Password needed") + : wallet_runtime_error(std::move(loc), msg) + { + } + }; + //---------------------------------------------------------------------------------------------------- const char* const file_error_messages[] = { "file already exists", "file not found", diff --git a/src/wallet/wallet_rpc_server.cpp b/src/wallet/wallet_rpc_server.cpp index 136cd0e2d..780f74d7f 100644 --- a/src/wallet/wallet_rpc_server.cpp +++ b/src/wallet/wallet_rpc_server.cpp @@ -163,7 +163,7 @@ namespace tools walvars = m_wallet; else { - tmpwal = tools::wallet2::make_dummy(*m_vm, password_prompter); + tmpwal = tools::wallet2::make_dummy(*m_vm, true, password_prompter); walvars = tmpwal.get(); } boost::optional http_login{}; @@ -2638,7 +2638,7 @@ namespace tools command_line::add_arg(desc, arg_password); po::store(po::parse_command_line(argc, argv, desc), vm2); } - std::unique_ptr wal = tools::wallet2::make_new(vm2, nullptr).first; + std::unique_ptr wal = tools::wallet2::make_new(vm2, true, nullptr).first; if (!wal) { er.code = WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR; @@ -2712,7 +2712,7 @@ namespace tools } std::unique_ptr wal = nullptr; try { - wal = tools::wallet2::make_from_file(vm2, wallet_file, nullptr).first; + wal = tools::wallet2::make_from_file(vm2, true, wallet_file, nullptr).first; } catch (const std::exception& e) { @@ -3261,13 +3261,13 @@ int main(int argc, char** argv) { LOG_PRINT_L0(tools::wallet_rpc_server::tr("Loading wallet...")); if(!wallet_file.empty()) { - wal = tools::wallet2::make_from_file(*vm, wallet_file, password_prompt).first; + wal = tools::wallet2::make_from_file(*vm, true, wallet_file, password_prompt).first; } else { try { - wal = tools::wallet2::make_from_json(*vm, from_json, password_prompt); + wal = tools::wallet2::make_from_json(*vm, true, from_json, password_prompt); } catch (const std::exception &e) { -- cgit v1.2.3 From ab74dc277aac3922a266ccae30fa2c30d9222790 Mon Sep 17 00:00:00 2001 From: moneromooo-monero Date: Sun, 15 Jul 2018 14:33:48 +0100 Subject: crypto: make secret_key automatically mlock --- src/crypto/chacha.h | 11 ++++++----- src/crypto/crypto.h | 3 ++- src/cryptonote_basic/account.cpp | 4 ++-- src/device/device_default.cpp | 2 +- src/wallet/wallet2.cpp | 2 +- 5 files changed, 12 insertions(+), 10 deletions(-) (limited to 'src') diff --git a/src/crypto/chacha.h b/src/crypto/chacha.h index 1dc270faf..6e85ad0e9 100644 --- a/src/crypto/chacha.h +++ b/src/crypto/chacha.h @@ -40,6 +40,7 @@ #include #include "memwipe.h" +#include "mlocker.h" #include "hash.h" namespace crypto { @@ -50,7 +51,7 @@ namespace crypto { #if defined(__cplusplus) } - using chacha_key = tools::scrubbed_arr; + using chacha_key = epee::mlocked>; #pragma pack(push, 1) // MS VC 2012 doesn't interpret `class chacha_iv` as POD in spite of [9.0.10], so it is a struct @@ -71,20 +72,20 @@ namespace crypto { inline void generate_chacha_key(const void *data, size_t size, chacha_key& key, uint64_t kdf_rounds) { static_assert(sizeof(chacha_key) <= sizeof(hash), "Size of hash must be at least that of chacha_key"); - tools::scrubbed_arr pwd_hash; + epee::mlocked> pwd_hash; crypto::cn_slow_hash(data, size, pwd_hash.data(), 0/*variant*/, 0/*prehashed*/); for (uint64_t n = 1; n < kdf_rounds; ++n) crypto::cn_slow_hash(pwd_hash.data(), pwd_hash.size(), pwd_hash.data(), 0/*variant*/, 0/*prehashed*/); - memcpy(&unwrap(key), pwd_hash.data(), sizeof(key)); + memcpy(&unwrap(unwrap(key)), pwd_hash.data(), sizeof(key)); } inline void generate_chacha_key_prehashed(const void *data, size_t size, chacha_key& key, uint64_t kdf_rounds) { static_assert(sizeof(chacha_key) <= sizeof(hash), "Size of hash must be at least that of chacha_key"); - tools::scrubbed_arr pwd_hash; + epee::mlocked> pwd_hash; crypto::cn_slow_hash(data, size, pwd_hash.data(), 0/*variant*/, 1/*prehashed*/); for (uint64_t n = 1; n < kdf_rounds; ++n) crypto::cn_slow_hash(pwd_hash.data(), pwd_hash.size(), pwd_hash.data(), 0/*variant*/, 0/*prehashed*/); - memcpy(&unwrap(key), pwd_hash.data(), sizeof(key)); + memcpy(&unwrap(unwrap(key)), pwd_hash.data(), sizeof(key)); } inline void generate_chacha_key(std::string password, chacha_key& key, uint64_t kdf_rounds) { diff --git a/src/crypto/crypto.h b/src/crypto/crypto.h index a2d61b04e..c1576a218 100644 --- a/src/crypto/crypto.h +++ b/src/crypto/crypto.h @@ -41,6 +41,7 @@ #include "common/pod-class.h" #include "common/util.h" #include "memwipe.h" +#include "mlocker.h" #include "generic-ops.h" #include "hex.h" #include "span.h" @@ -65,7 +66,7 @@ namespace crypto { friend class crypto_ops; }; - using secret_key = tools::scrubbed; + using secret_key = epee::mlocked>; POD_CLASS public_keyV { std::vector keys; diff --git a/src/cryptonote_basic/account.cpp b/src/cryptonote_basic/account.cpp index 0aebf9223..4cbfa8142 100644 --- a/src/cryptonote_basic/account.cpp +++ b/src/cryptonote_basic/account.cpp @@ -67,7 +67,7 @@ DISABLE_VS_WARNINGS(4244 4345) static void derive_key(const crypto::chacha_key &base_key, crypto::chacha_key &key) { static_assert(sizeof(base_key) == sizeof(crypto::hash), "chacha key and hash should be the same size"); - tools::scrubbed_arr data; + epee::mlocked> data; memcpy(data.data(), &base_key, sizeof(base_key)); data[sizeof(base_key)] = KEYS_ENCRYPTION_SALT; crypto::generate_chacha_key(data.data(), sizeof(data), key, 1); @@ -223,7 +223,7 @@ DISABLE_VS_WARNINGS(4244 4345) void account_base::create_from_viewkey(const cryptonote::account_public_address& address, const crypto::secret_key& viewkey) { crypto::secret_key fake; - memset(&unwrap(fake), 0, sizeof(fake)); + memset(&unwrap(unwrap(fake)), 0, sizeof(fake)); create_from_keys(address, fake, viewkey); } //----------------------------------------------------------------- diff --git a/src/device/device_default.cpp b/src/device/device_default.cpp index bf14813ea..a4f40e041 100644 --- a/src/device/device_default.cpp +++ b/src/device/device_default.cpp @@ -103,7 +103,7 @@ namespace hw { bool device_default::generate_chacha_key(const cryptonote::account_keys &keys, crypto::chacha_key &key, uint64_t kdf_rounds) { const crypto::secret_key &view_key = keys.m_view_secret_key; const crypto::secret_key &spend_key = keys.m_spend_secret_key; - tools::scrubbed_arr data; + epee::mlocked> data; memcpy(data.data(), &view_key, sizeof(view_key)); memcpy(data.data() + sizeof(view_key), &spend_key, sizeof(spend_key)); data[sizeof(data) - 1] = CHACHA8_KEY_TAIL; diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp index ea3cca1ce..115438351 100644 --- a/src/wallet/wallet2.cpp +++ b/src/wallet/wallet2.cpp @@ -2963,7 +2963,7 @@ void wallet2::setup_keys(const epee::wipeable_string &password) } static_assert(HASH_SIZE == sizeof(crypto::chacha_key), "Mismatched sizes of hash and chacha key"); - tools::scrubbed_arr cache_key_data; + epee::mlocked> cache_key_data; memcpy(cache_key_data.data(), &key, HASH_SIZE); cache_key_data[HASH_SIZE] = CACHE_KEY_TAIL; cn_fast_hash(cache_key_data.data(), HASH_SIZE+1, (crypto::hash&)m_cache_key); -- cgit v1.2.3