diff options
Diffstat (limited to 'src/mnemonics/electrum-words.cpp')
| -rw-r--r-- | src/mnemonics/electrum-words.cpp | 70 |
1 files changed, 56 insertions, 14 deletions
diff --git a/src/mnemonics/electrum-words.cpp b/src/mnemonics/electrum-words.cpp index 897ab34e7..718bbfd9a 100644 --- a/src/mnemonics/electrum-words.cpp +++ b/src/mnemonics/electrum-words.cpp @@ -26,7 +26,11 @@ // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -/* +/*! + * \file electrum-words.cpp + * + * \brief Mnemonic seed generation and wallet restoration from them. + * * This file and its header file are for translating Electrum-style word lists * into their equivalent byte representations for cross-compatibility with * that method of "backing up" one's wallet keys. @@ -56,11 +60,20 @@ namespace const std::string LANGUAGES_DIRECTORY = "languages"; const std::string OLD_WORD_FILE = "old-word-list"; + /*! + * Tells if the module hasn't been initialized with a word list file. + * \return Whether the module hasn't been initialized with a word list file. + */ bool is_uninitialized() { return num_words == 0 ? true : false; } + /*! + * Create word list map and array data structres for use during inter-conversion between + * words and secret key. + * \param word_file Path to the word list file from pwd. + */ void create_data_structures(const std::string &word_file) { words_array.clear(); @@ -82,6 +95,11 @@ namespace input_stream.close(); } + /*! + * Tells if all the words passed in wlist was present in current word list file. + * \param wlist List of words to match. + * \return Whether they were all present or not. + */ bool word_list_file_match(const std::vector<std::string> &wlist) { for (std::vector<std::string>::const_iterator it = wlist.begin(); it != wlist.end(); it++) @@ -95,15 +113,28 @@ namespace } } +/*! + * \namespace crypto + */ namespace crypto { + /*! + * \namespace ElectrumWords + * + * \brief Mnemonic seed word generation and wallet restoration. + */ namespace ElectrumWords { - + /*! + * \brief Called to initialize it work with a word list file. + * \param language Language of the word list file. + * \param old_word_list Whether it is to use the old style word list file. + */ void init(const std::string &language, bool old_word_list) { if (old_word_list) { + // Use the old word list file if told to. create_data_structures(WORD_LISTS_DIRECTORY + '/' + OLD_WORD_FILE); is_old_style_mnemonics = true; } @@ -119,6 +150,10 @@ namespace crypto } } + /*! + * \brief If the module is currenly using an old style word list. + * \return Whether it is currenly using an old style word list. + */ bool get_is_old_style_mnemonics() { if (is_uninitialized()) @@ -127,12 +162,12 @@ namespace crypto } return is_old_style_mnemonics; } - /* convert words to bytes, 3 words -> 4 bytes - * returns: - * false if not a multiple of 3 words, or if a words is not in the - * words list - * - * true otherwise + + /*! + * \brief Converts seed words to bytes (secret key). + * \param words String containing the words separated by spaces. + * \param dst To put the secret key restored from the words. + * \return false if not a multiple of 3 words, or if word is not in the words list */ bool words_to_bytes(const std::string& words, crypto::secret_key& dst) { @@ -143,6 +178,7 @@ namespace crypto std::vector<std::string> languages; get_language_list(languages); + // Try to find a word list file that contains all the words in the word list. std::vector<std::string>::iterator it; for (it = languages.begin(); it != languages.end(); it++) { @@ -152,6 +188,7 @@ namespace crypto break; } } + // If no such file was found, see if the old style word list file has them all. if (it == languages.end()) { init("", true); @@ -192,10 +229,11 @@ namespace crypto return true; } - /* convert bytes to words, 4 bytes-> 3 words - * returns: - * false if wrong number of bytes (shouldn't be possible) - * true otherwise + /*! + * \brief Converts bytes (secret key) to seed words. + * \param src Secret key + * \param words Space separated words get copied here. + * \return Whether it was successful or not. Unsuccessful if wrong key size. */ bool bytes_to_words(const crypto::secret_key& src, std::string& words) { @@ -229,6 +267,10 @@ namespace crypto return false; } + /*! + * \brief Gets a list of seed languages that are supported. + * \param languages The list gets added to this. + */ void get_language_list(std::vector<std::string> &languages) { languages.clear(); @@ -245,6 +287,6 @@ namespace crypto } } - } // namespace ElectrumWords + } -} // namespace crypto +} |