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wallet2: speed up subaddress generation (by about a third)

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This commit is contained in:
moneromooo-monero 2018-02-10 10:38:33 +00:00
parent ed67e5c001
commit f2c4c39971
No known key found for this signature in database
GPG Key ID: 686F07454D6CEFC3
4 changed files with 55 additions and 15 deletions
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39
src/cryptonote_basic/cryptonote_format_utils.cpp
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@ -172,6 +172,45 @@ namespace cryptonote
return m;
}
//---------------------------------------------------------------
std::vector<crypto::public_key> get_subaddress_spend_public_keys(const cryptonote::account_keys &keys, uint32_t account, uint32_t begin, uint32_t end)
{
CHECK_AND_ASSERT_THROW_MES(begin <= end, "begin > end");
std::vector<crypto::public_key> pkeys;
pkeys.reserve(end - begin);
cryptonote::subaddress_index index = {account, begin};
ge_p3 p3;
ge_cached cached;
CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&p3, (const unsigned char*)keys.m_account_address.m_spend_public_key.data) == 0,
"ge_frombytes_vartime failed to convert spend public key");
ge_p3_to_cached(&cached, &p3);
for (uint32_t idx = begin; idx < end; ++idx)
{
index.minor = idx;
if (index.is_zero())
{
pkeys.push_back(keys.m_account_address.m_spend_public_key);
continue;
}
const crypto::secret_key m = cryptonote::get_subaddress_secret_key(keys.m_view_secret_key, index);
// M = m*G
ge_scalarmult_base(&p3, (const unsigned char*)m.data);
// D = B + M
crypto::public_key D;
ge_p1p1 p1p1;
ge_add(&p1p1, &p3, &cached);
ge_p1p1_to_p3(&p3, &p1p1);
ge_p3_tobytes((unsigned char*)D.data, &p3);
pkeys.push_back(D);
}
return pkeys;
}
//---------------------------------------------------------------
bool generate_key_image_helper(const account_keys& ack, const std::unordered_map<crypto::public_key, subaddress_index>& subaddresses, const crypto::public_key& out_key, const crypto::public_key& tx_public_key, const std::vector<crypto::public_key>& additional_tx_public_keys, size_t real_output_index, keypair& in_ephemeral, crypto::key_image& ki)
{
crypto::key_derivation recv_derivation = AUTO_VAL_INIT(recv_derivation);

1
src/cryptonote_basic/cryptonote_format_utils.h
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@ -93,6 +93,7 @@ namespace cryptonote
bool get_tx_fee(const transaction& tx, uint64_t & fee);
uint64_t get_tx_fee(const transaction& tx);
crypto::secret_key get_subaddress_secret_key(const crypto::secret_key& a, const subaddress_index& index);
std::vector<crypto::public_key> get_subaddress_spend_public_keys(const cryptonote::account_keys &keys, uint32_t account, uint32_t begin, uint32_t end);
bool generate_key_image_helper(const account_keys& ack, const std::unordered_map<crypto::public_key, subaddress_index>& subaddresses, const crypto::public_key& out_key, const crypto::public_key& tx_public_key, const std::vector<crypto::public_key>& additional_tx_public_keys, size_t real_output_index, keypair& in_ephemeral, crypto::key_image& ki);
bool generate_key_image_helper_precomp(const account_keys& ack, const crypto::public_key& out_key, const crypto::key_derivation& recv_derivation, size_t real_output_index, const subaddress_index& received_index, keypair& in_ephemeral, crypto::key_image& ki);
void get_blob_hash(const blobdata& blob, crypto::hash& res);

29
src/wallet/wallet2.cpp
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@ -889,14 +889,13 @@ void wallet2::expand_subaddresses(const cryptonote::subaddress_index& index)
cryptonote::subaddress_index index2;
for (index2.major = m_subaddress_labels.size(); index2.major < index.major + m_subaddress_lookahead_major; ++index2.major)
{
for (index2.minor = 0; index2.minor < (index2.major == index.major ? index.minor : 0) + m_subaddress_lookahead_minor; ++index2.minor)
const uint32_t end = (index2.major == index.major ? index.minor : 0) + m_subaddress_lookahead_minor;
const std::vector<crypto::public_key> pkeys = cryptonote::get_subaddress_spend_public_keys(m_account.get_keys(), index2.major, 0, end);
for (index2.minor = 0; index2.minor < end; ++index2.minor)
{
if (m_subaddresses_inv.count(index2) == 0)
{
crypto::public_key D = get_subaddress_spend_public_key(index2);
m_subaddresses[D] = index2;
m_subaddresses_inv[index2] = D;
}
const crypto::public_key &D = pkeys[index2.minor];
m_subaddresses[D] = index2;
m_subaddresses_inv[index2] = D;
}
}
m_subaddress_labels.resize(index.major + 1, {"Untitled account"});
@ -905,15 +904,15 @@ void wallet2::expand_subaddresses(const cryptonote::subaddress_index& index)
else if (m_subaddress_labels[index.major].size() <= index.minor)
{
// add new subaddresses
cryptonote::subaddress_index index2 = index;
for (index2.minor = m_subaddress_labels[index.major].size(); index2.minor < index.minor + m_subaddress_lookahead_minor; ++index2.minor)
const uint32_t end = index.minor + m_subaddress_lookahead_minor;
const uint32_t begin = m_subaddress_labels[index.major].size();
cryptonote::subaddress_index index2 = {index.major, begin};
const std::vector<crypto::public_key> pkeys = cryptonote::get_subaddress_spend_public_keys(m_account.get_keys(), index2.major, index2.minor, end);
for (; index2.minor < end; ++index2.minor)
{
if (m_subaddresses_inv.count(index2) == 0)
{
crypto::public_key D = get_subaddress_spend_public_key(index2);
m_subaddresses[D] = index2;
m_subaddresses_inv[index2] = D;
}
const crypto::public_key &D = pkeys[index2.minor - begin];
m_subaddresses[D] = index2;
m_subaddresses_inv[index2] = D;
}
m_subaddress_labels[index.major].resize(index.minor + 1);
}

1
src/wallet/wallet2.h
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@ -602,6 +602,7 @@ namespace tools
cryptonote::account_public_address get_subaddress(const cryptonote::subaddress_index& index) const;
cryptonote::account_public_address get_address() const { return get_subaddress({0,0}); }
crypto::public_key get_subaddress_spend_public_key(const cryptonote::subaddress_index& index) const;
std::vector<crypto::public_key> get_subaddress_spend_public_keys(uint32_t account, uint32_t begin, uint32_t end) const;
std::string get_subaddress_as_str(const cryptonote::subaddress_index& index) const;
std::string get_address_as_str() const { return get_subaddress_as_str({0, 0}); }
std::string get_integrated_address_as_str(const crypto::hash8& payment_id) const;