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Move key image export/import functions to wallet2

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This commit is contained in:
Jaquee
2017-01-13 12:02:13 +01:00
parent 4026e7b7de
commit a081b39c01
3 changed files with 99 additions and 79 deletions
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89
src/wallet/wallet2.cpp
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@@ -92,6 +92,8 @@ using namespace cryptonote;
ioservice.stop(); \
} while(0)
#define KEY_IMAGE_EXPORT_FILE_MAGIC "Monero key image export\002"
namespace
{
// Create on-demand to prevent static initialization order fiasco issues.
@@ -3083,7 +3085,7 @@ bool wallet2::sign_tx(const std::string &unsigned_filename, const std::string &s
{
return false;
}
LOG_PRINT_L2("Saving signed tx data: " << oss.str());
LOG_PRINT_L3("Saving signed tx data: " << oss.str());
return epee::file_io_utils::save_string_to_file(signed_filename, std::string(SIGNED_TX_PREFIX) + oss.str());
}
//----------------------------------------------------------------------------------------------------
@@ -4778,6 +4780,27 @@ crypto::public_key wallet2::get_tx_pub_key_from_received_outs(const tools::walle
"Public key yielding at least one output wasn't found in the transaction extra");
return cryptonote::null_pkey;
}
bool wallet2::export_key_images(const std::string filename)
{
std::vector<std::pair<crypto::key_image, crypto::signature>> ski = export_key_images();
std::string magic(KEY_IMAGE_EXPORT_FILE_MAGIC, strlen(KEY_IMAGE_EXPORT_FILE_MAGIC));
const cryptonote::account_public_address &keys = get_account().get_keys().m_account_address;
std::string data;
data += std::string((const char *)&keys.m_spend_public_key, sizeof(crypto::public_key));
data += std::string((const char *)&keys.m_view_public_key, sizeof(crypto::public_key));
for (const auto &i: ski)
{
data += std::string((const char *)&i.first, sizeof(crypto::key_image));
data += std::string((const char *)&i.second, sizeof(crypto::signature));
}
// encrypt data, keep magic plaintext
std::string ciphertext = encrypt_with_view_secret_key(data);
return epee::file_io_utils::save_string_to_file(filename, magic + ciphertext);
}
//----------------------------------------------------------------------------------------------------
std::vector<std::pair<crypto::key_image, crypto::signature>> wallet2::export_key_images() const
{
@@ -4828,6 +4851,70 @@ std::vector<std::pair<crypto::key_image, crypto::signature>> wallet2::export_key
}
return ski;
}
uint64_t wallet2::import_key_images(const std::string &filename, uint64_t &spent, uint64_t &unspent)
{
std::string data;
bool r = epee::file_io_utils::load_file_to_string(filename, data);
if (!r)
{
fail_msg_writer() << tr("failed to read file ") << filename;
return 0;
}
const size_t magiclen = strlen(KEY_IMAGE_EXPORT_FILE_MAGIC);
if (data.size() < magiclen || memcmp(data.data(), KEY_IMAGE_EXPORT_FILE_MAGIC, magiclen))
{
fail_msg_writer() << "Bad key image export file magic in " << filename;
return 0;
}
try
{
data = decrypt_with_view_secret_key(std::string(data, magiclen));
}
catch (const std::exception &e)
{
fail_msg_writer() << "Failed to decrypt " << filename << ": " << e.what();
return 0;
}
const size_t headerlen = 2 * sizeof(crypto::public_key);
if (data.size() < headerlen)
{
fail_msg_writer() << "Bad data size from file " << filename;
return 0;
}
const crypto::public_key &public_spend_key = *(const crypto::public_key*)&data[0];
const crypto::public_key &public_view_key = *(const crypto::public_key*)&data[sizeof(crypto::public_key)];
const cryptonote::account_public_address &keys = get_account().get_keys().m_account_address;
if (public_spend_key != keys.m_spend_public_key || public_view_key != keys.m_view_public_key)
{
fail_msg_writer() << "Key images from " << filename << " are for a different account";
return 0;
}
const size_t record_size = sizeof(crypto::key_image) + sizeof(crypto::signature);
if ((data.size() - headerlen) % record_size)
{
fail_msg_writer() << "Bad data size from file " << filename;
return 0;
}
size_t nki = (data.size() - headerlen) / record_size;
std::vector<std::pair<crypto::key_image, crypto::signature>> ski;
ski.reserve(nki);
for (size_t n = 0; n < nki; ++n)
{
crypto::key_image key_image = *reinterpret_cast<const crypto::key_image*>(&data[headerlen + n * record_size]);
crypto::signature signature = *reinterpret_cast<const crypto::signature*>(&data[headerlen + n * record_size + sizeof(crypto::key_image)]);
ski.push_back(std::make_pair(key_image, signature));
}
return import_key_images(ski, spent, unspent);
}
//----------------------------------------------------------------------------------------------------
uint64_t wallet2::import_key_images(const std::vector<std::pair<crypto::key_image, crypto::signature>> &signed_key_images, uint64_t &spent, uint64_t &unspent)
{