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Merge pull request #3247

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89ad162a wallet2: remove unused m_subaddresses_inv (moneromooo-monero)
f2c4c399 wallet2: speed up subaddress generation (by about a third) (moneromooo-monero)
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Riccardo Spagni 2018-02-20 17:46:40 +02:00
commit cfa3af4078
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4 changed files with 55 additions and 19 deletions
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39
src/cryptonote_basic/cryptonote_format_utils.cpp
View file

@ -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
View file

@ -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);