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Add wallet2::verify_password method

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Allows wallet password to be verified without changing wallet state.
This commit is contained in:
warptangent 2014-12-06 06:55:56 -08:00
parent efad735145
commit 26b87dfdc2
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2 changed files with 53 additions and 0 deletions
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48
src/wallet/wallet2.cpp
View file

@ -570,6 +570,54 @@ void wallet2::load_keys(const std::string& keys_file_name, const std::string& pa
THROW_WALLET_EXCEPTION_IF(!r, error::invalid_password);
}
/*!
* \brief verify password for default wallet keys file.
* \param password Password to verify
*
* for verification only
* should not mutate state, unlike load_keys()
* can be used prior to rewriting wallet keys file, to ensure user has entered the correct password
*
*/
bool wallet2::verify_password(const std::string& password)
{
const std::string keys_file_name = m_keys_file;
wallet2::keys_file_data keys_file_data;
std::string buf;
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);
// Decrypt the contents
r = ::serialization::parse_binary(buf, keys_file_data);
THROW_WALLET_EXCEPTION_IF(!r, error::wallet_internal_error, "internal error: failed to deserialize \"" + keys_file_name + '\"');
crypto::chacha8_key key;
crypto::generate_chacha8_key(password, key);
std::string account_data;
account_data.resize(keys_file_data.account_data.size());
crypto::chacha8(keys_file_data.account_data.data(), keys_file_data.account_data.size(), key, keys_file_data.iv, &account_data[0]);
// The contents should be JSON if the wallet follows the new format.
rapidjson::Document json;
if (json.Parse(account_data.c_str(), keys_file_data.account_data.size()).HasParseError())
{
// old format before JSON wallet key file format
}
else
{
account_data = std::string(json["key_data"].GetString(), json["key_data"].GetString() +
json["key_data"].GetStringLength());
}
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();
r = r && verify_keys(keys.m_view_secret_key, keys.m_account_address.m_view_public_key);
r = r && verify_keys(keys.m_spend_secret_key, keys.m_account_address.m_spend_public_key);
return r;
}
/*!
* \brief Generates a wallet or restores one.
* \param wallet_ Name of wallet file

5
src/wallet/wallet2.h
View file

@ -153,6 +153,11 @@ namespace tools
void rewrite(const std::string& wallet_name, const std::string& password);
void load(const std::string& wallet, const std::string& password);
void store();
/*!
* \brief verifies given password is correct for default wallet keys file
*/
bool verify_password(const std::string& password);
cryptonote::account_base& get_account(){return m_account;}
// upper_transaction_size_limit as defined below is set to