mirror of
https://codeberg.org/anoncontributorxmr/monero.git
synced 2024-11-26 17:32:33 +00:00
mnemonics: compare canonical words (lowercase)
This commit is contained in:
moneromooo-monero
parent
42abea7f72
commit
11227e0ba2
2 changed files with 115 additions and 24 deletions
|
|
@ -76,8 +76,8 @@ namespace crypto
|
|||
namespace
|
||||
{
|
||||
uint32_t create_checksum_index(const std::vector<epee::wipeable_string> &word_list,
|
||||
uint32_t unique_prefix_length);
|
||||
bool checksum_test(std::vector<epee::wipeable_string> seed, uint32_t unique_prefix_length);
|
||||
const Language::Base *language);
|
||||
bool checksum_test(std::vector<epee::wipeable_string> seed, const Language::Base *language);
|
||||
|
||||
/*!
|
||||
* \brief Finds the word list that contains the seed words and puts the indices
|
||||
|
|
@ -116,8 +116,8 @@ namespace
|
|||
for (std::vector<Language::Base*>::iterator it1 = language_instances.begin();
|
||||
it1 != language_instances.end(); it1++)
|
||||
{
|
||||
const std::unordered_map<epee::wipeable_string, uint32_t> &word_map = (*it1)->get_word_map();
|
||||
const std::unordered_map<epee::wipeable_string, uint32_t> &trimmed_word_map = (*it1)->get_trimmed_word_map();
|
||||
const std::unordered_map<epee::wipeable_string, uint32_t, Language::WordHash, Language::WordEqual> &word_map = (*it1)->get_word_map();
|
||||
const std::unordered_map<epee::wipeable_string, uint32_t, Language::WordHash, Language::WordEqual> &trimmed_word_map = (*it1)->get_trimmed_word_map();
|
||||
// To iterate through seed words
|
||||
bool full_match = true;
|
||||
|
||||
|
|
@ -151,7 +151,7 @@ namespace
|
|||
// if we were using prefix only, and we have a checksum, check it now
|
||||
// to avoid false positives due to prefix set being too common
|
||||
if (has_checksum)
|
||||
if (!checksum_test(seed, (*it1)->get_unique_prefix_length()))
|
||||
if (!checksum_test(seed, *it1))
|
||||
{
|
||||
fallback = *it1;
|
||||
full_match = false;
|
||||
|
|
@ -190,20 +190,20 @@ namespace
|
|||
* \return Checksum index
|
||||
*/
|
||||
uint32_t create_checksum_index(const std::vector<epee::wipeable_string> &word_list,
|
||||
uint32_t unique_prefix_length)
|
||||
const Language::Base *language)
|
||||
{
|
||||
epee::wipeable_string trimmed_words = "";
|
||||
epee::wipeable_string trimmed_words = "", word;
|
||||
|
||||
const auto &word_map = language->get_word_map();
|
||||
const auto &trimmed_word_map = language->get_trimmed_word_map();
|
||||
const uint32_t unique_prefix_length = language->get_unique_prefix_length();
|
||||
for (std::vector<epee::wipeable_string>::const_iterator it = word_list.begin(); it != word_list.end(); it++)
|
||||
{
|
||||
if (it->length() > unique_prefix_length)
|
||||
{
|
||||
trimmed_words += Language::utf8prefix(*it, unique_prefix_length);
|
||||
}
|
||||
else
|
||||
{
|
||||
trimmed_words += *it;
|
||||
}
|
||||
word = Language::utf8prefix(*it, unique_prefix_length);
|
||||
auto it2 = trimmed_word_map.find(word);
|
||||
if (it2 == trimmed_word_map.end())
|
||||
throw std::runtime_error("Word \"" + std::string(word.data(), word.size()) + "\" not found in trimmed word map in " + language->get_english_language_name());
|
||||
trimmed_words += it2->first;
|
||||
}
|
||||
boost::crc_32_type result;
|
||||
result.process_bytes(trimmed_words.data(), trimmed_words.length());
|
||||
|
|
@ -216,7 +216,7 @@ 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<epee::wipeable_string> seed, uint32_t unique_prefix_length)
|
||||
bool checksum_test(std::vector<epee::wipeable_string> seed, const Language::Base *language)
|
||||
{
|
||||
if (seed.empty())
|
||||
return false;
|
||||
|
|
@ -224,13 +224,16 @@ namespace
|
|||
epee::wipeable_string last_word = seed.back();
|
||||
seed.pop_back();
|
||||
|
||||
epee::wipeable_string checksum = seed[create_checksum_index(seed, unique_prefix_length)];
|
||||
const uint32_t unique_prefix_length = language->get_unique_prefix_length();
|
||||
|
||||
auto idx = create_checksum_index(seed, language);
|
||||
epee::wipeable_string checksum = seed[idx];
|
||||
|
||||
epee::wipeable_string trimmed_checksum = checksum.length() > unique_prefix_length ? Language::utf8prefix(checksum, unique_prefix_length) :
|
||||
checksum;
|
||||
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;
|
||||
bool ret = Language::WordEqual()(trimmed_checksum, trimmed_last_word);
|
||||
MINFO("Checksum is " << (ret ? "valid" : "invalid"));
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -301,7 +304,7 @@ namespace crypto
|
|||
|
||||
if (has_checksum)
|
||||
{
|
||||
if (!checksum_test(seed, language->get_unique_prefix_length()))
|
||||
if (!checksum_test(seed, language))
|
||||
{
|
||||
// Checksum fail
|
||||
MERROR("Invalid seed: invalid checksum");
|
||||
|
|
@ -424,7 +427,7 @@ namespace crypto
|
|||
memwipe(w, sizeof(w));
|
||||
}
|
||||
|
||||
words += words_store[create_checksum_index(words_store, language->get_unique_prefix_length())];
|
||||
words += words_store[create_checksum_index(words_store, language)];
|
||||
return true;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -38,7 +38,9 @@
|
|||
#include <vector>
|
||||
#include <unordered_map>
|
||||
#include <string>
|
||||
#include <boost/algorithm/string.hpp>
|
||||
#include "misc_log_ex.h"
|
||||
#include "fnv1.h"
|
||||
|
||||
/*!
|
||||
* \namespace Language
|
||||
|
|
@ -71,6 +73,92 @@ namespace Language
|
|||
return prefix;
|
||||
}
|
||||
|
||||
template<typename T>
|
||||
inline T utf8canonical(const T &s)
|
||||
{
|
||||
T sc = "";
|
||||
size_t avail = s.size();
|
||||
const char *ptr = s.data();
|
||||
wint_t cp = 0;
|
||||
int bytes = 1;
|
||||
char wbuf[8], *wptr;
|
||||
while (avail--)
|
||||
{
|
||||
if ((*ptr & 0x80) == 0)
|
||||
{
|
||||
cp = *ptr++;
|
||||
bytes = 1;
|
||||
}
|
||||
else if ((*ptr & 0xe0) == 0xc0)
|
||||
{
|
||||
if (avail < 1)
|
||||
throw std::runtime_error("Invalid UTF-8");
|
||||
cp = (*ptr++ & 0x1f) << 6;
|
||||
cp |= *ptr++ & 0x3f;
|
||||
--avail;
|
||||
bytes = 2;
|
||||
}
|
||||
else if ((*ptr & 0xf0) == 0xe0)
|
||||
{
|
||||
if (avail < 2)
|
||||
throw std::runtime_error("Invalid UTF-8");
|
||||
cp = (*ptr++ & 0xf) << 12;
|
||||
cp |= (*ptr++ & 0x3f) << 6;
|
||||
cp |= *ptr++ & 0x3f;
|
||||
avail -= 2;
|
||||
bytes = 3;
|
||||
}
|
||||
else if ((*ptr & 0xf8) == 0xf0)
|
||||
{
|
||||
if (avail < 3)
|
||||
throw std::runtime_error("Invalid UTF-8");
|
||||
cp = (*ptr++ & 0x7) << 18;
|
||||
cp |= (*ptr++ & 0x3f) << 12;
|
||||
cp |= (*ptr++ & 0x3f) << 6;
|
||||
cp |= *ptr++ & 0x3f;
|
||||
avail -= 3;
|
||||
bytes = 4;
|
||||
}
|
||||
else
|
||||
throw std::runtime_error("Invalid UTF-8");
|
||||
|
||||
cp = std::towlower(cp);
|
||||
wptr = wbuf;
|
||||
switch (bytes)
|
||||
{
|
||||
case 1: *wptr++ = cp; break;
|
||||
case 2: *wptr++ = 0xc0 | (cp >> 6); *wptr++ = 0x80 | (cp & 0x3f); break;
|
||||
case 3: *wptr++ = 0xe0 | (cp >> 12); *wptr++ = 0x80 | ((cp >> 6) & 0x3f); *wptr++ = 0x80 | (cp & 0x3f); break;
|
||||
case 4: *wptr++ = 0xf0 | (cp >> 18); *wptr += 0x80 | ((cp >> 12) & 0x3f); *wptr++ = 0x80 | ((cp >> 6) & 0x3f); *wptr++ = 0x80 | (cp & 0x3f); break;
|
||||
default: throw std::runtime_error("Invalid UTF-8");
|
||||
}
|
||||
*wptr = 0;
|
||||
sc += T(wbuf, bytes);
|
||||
cp = 0;
|
||||
bytes = 1;
|
||||
}
|
||||
return sc;
|
||||
}
|
||||
|
||||
struct WordHash
|
||||
{
|
||||
std::size_t operator()(const epee::wipeable_string &s) const
|
||||
{
|
||||
const epee::wipeable_string sc = utf8canonical(s);
|
||||
return epee::fnv::FNV1a(sc.data(), sc.size());
|
||||
}
|
||||
};
|
||||
|
||||
struct WordEqual
|
||||
{
|
||||
bool operator()(const epee::wipeable_string &s0, const epee::wipeable_string &s1) const
|
||||
{
|
||||
const epee::wipeable_string s0c = utf8canonical(s0);
|
||||
const epee::wipeable_string s1c = utf8canonical(s1);
|
||||
return s0c == s1c;
|
||||
}
|
||||
};
|
||||
|
||||
/*!
|
||||
* \class Base
|
||||
* \brief A base language class which all languages have to inherit from for
|
||||
|
|
@ -87,8 +175,8 @@ namespace Language
|
|||
NWORDS = 1626
|
||||
};
|
||||
std::vector<std::string> word_list; /*!< A pointer to the array of words */
|
||||
std::unordered_map<epee::wipeable_string, uint32_t> word_map; /*!< hash table to find word's index */
|
||||
std::unordered_map<epee::wipeable_string, uint32_t> trimmed_word_map; /*!< hash table to find word's trimmed index */
|
||||
std::unordered_map<epee::wipeable_string, uint32_t, WordHash, WordEqual> word_map; /*!< hash table to find word's index */
|
||||
std::unordered_map<epee::wipeable_string, uint32_t, WordHash, WordEqual> 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 */
|
||||
|
|
@ -159,7 +247,7 @@ namespace Language
|
|||
* \brief Returns a pointer to the word map.
|
||||
* \return A pointer to the word map.
|
||||
*/
|
||||
const std::unordered_map<epee::wipeable_string, uint32_t>& get_word_map() const
|
||||
const std::unordered_map<epee::wipeable_string, uint32_t, WordHash, WordEqual>& get_word_map() const
|
||||
{
|
||||
return word_map;
|
||||
}
|
||||
|
|
@ -167,7 +255,7 @@ namespace Language
|
|||
* \brief Returns a pointer to the trimmed word map.
|
||||
* \return A pointer to the trimmed word map.
|
||||
*/
|
||||
const std::unordered_map<epee::wipeable_string, uint32_t>& get_trimmed_word_map() const
|
||||
const std::unordered_map<epee::wipeable_string, uint32_t, WordHash, WordEqual>& get_trimmed_word_map() const
|
||||
{
|
||||
return trimmed_word_map;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue