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| author | j-berman <justinberman@protonmail.com> | 2021-11-15 05:23:53 -0800 |
|---|---|---|
| committer | j-berman <justinberman@protonmail.com> | 2022-04-18 00:49:53 -0700 |
| commit | ea87b30f8907ee11252433811e7a7d0c46758cca (patch) | |
| tree | 61dedf56a781a83285be092b078019bebdc94f2e /src/cryptonote_core/cryptonote_tx_utils.h | |
| parent | Merge pull request #8207 (diff) | |
| download | monero-ea87b30f8907ee11252433811e7a7d0c46758cca.tar.xz | |
Add view tags to outputs to reduce wallet scanning time
Implements view tags as proposed by @UkoeHB in MRL issue
https://github.com/monero-project/research-lab/issues/73
At tx construction, the sender adds a 1-byte view tag to each
output. The view tag is derived from the sender-receiver
shared secret. When scanning for outputs, the receiver can
check the view tag for a match, in order to reduce scanning
time. When the view tag does not match, the wallet avoids the
more expensive EC operations when deriving the output public
key using the shared secret.
Diffstat (limited to 'src/cryptonote_core/cryptonote_tx_utils.h')
| -rw-r--r-- | src/cryptonote_core/cryptonote_tx_utils.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/cryptonote_core/cryptonote_tx_utils.h b/src/cryptonote_core/cryptonote_tx_utils.h index be6a6d946..f4ffb98ff 100644 --- a/src/cryptonote_core/cryptonote_tx_utils.h +++ b/src/cryptonote_core/cryptonote_tx_utils.h @@ -119,21 +119,23 @@ namespace cryptonote //--------------------------------------------------------------- crypto::public_key get_destination_view_key_pub(const std::vector<tx_destination_entry> &destinations, const boost::optional<cryptonote::account_public_address>& change_addr); bool construct_tx(const account_keys& sender_account_keys, std::vector<tx_source_entry> &sources, const std::vector<tx_destination_entry>& destinations, const boost::optional<cryptonote::account_public_address>& change_addr, const std::vector<uint8_t> &extra, transaction& tx, uint64_t unlock_time); - bool construct_tx_with_tx_key(const account_keys& sender_account_keys, const std::unordered_map<crypto::public_key, subaddress_index>& subaddresses, std::vector<tx_source_entry>& sources, std::vector<tx_destination_entry>& destinations, const boost::optional<cryptonote::account_public_address>& change_addr, const std::vector<uint8_t> &extra, transaction& tx, uint64_t unlock_time, const crypto::secret_key &tx_key, const std::vector<crypto::secret_key> &additional_tx_keys, bool rct = false, const rct::RCTConfig &rct_config = { rct::RangeProofBorromean, 0 }, rct::multisig_out *msout = NULL, bool shuffle_outs = true); - bool construct_tx_and_get_tx_key(const account_keys& sender_account_keys, const std::unordered_map<crypto::public_key, subaddress_index>& subaddresses, std::vector<tx_source_entry>& sources, std::vector<tx_destination_entry>& destinations, const boost::optional<cryptonote::account_public_address>& change_addr, const std::vector<uint8_t> &extra, transaction& tx, uint64_t unlock_time, crypto::secret_key &tx_key, std::vector<crypto::secret_key> &additional_tx_keys, bool rct = false, const rct::RCTConfig &rct_config = { rct::RangeProofBorromean, 0 }, rct::multisig_out *msout = NULL); + bool construct_tx_with_tx_key(const account_keys& sender_account_keys, const std::unordered_map<crypto::public_key, subaddress_index>& subaddresses, std::vector<tx_source_entry>& sources, std::vector<tx_destination_entry>& destinations, const boost::optional<cryptonote::account_public_address>& change_addr, const std::vector<uint8_t> &extra, transaction& tx, uint64_t unlock_time, const crypto::secret_key &tx_key, const std::vector<crypto::secret_key> &additional_tx_keys, bool rct = false, const rct::RCTConfig &rct_config = { rct::RangeProofBorromean, 0 }, rct::multisig_out *msout = NULL, bool shuffle_outs = true, bool use_view_tags = false); + bool construct_tx_and_get_tx_key(const account_keys& sender_account_keys, const std::unordered_map<crypto::public_key, subaddress_index>& subaddresses, std::vector<tx_source_entry>& sources, std::vector<tx_destination_entry>& destinations, const boost::optional<cryptonote::account_public_address>& change_addr, const std::vector<uint8_t> &extra, transaction& tx, uint64_t unlock_time, crypto::secret_key &tx_key, std::vector<crypto::secret_key> &additional_tx_keys, bool rct = false, const rct::RCTConfig &rct_config = { rct::RangeProofBorromean, 0 }, rct::multisig_out *msout = NULL, bool use_view_tags = false); bool generate_output_ephemeral_keys(const size_t tx_version, const cryptonote::account_keys &sender_account_keys, const crypto::public_key &txkey_pub, const crypto::secret_key &tx_key, const cryptonote::tx_destination_entry &dst_entr, const boost::optional<cryptonote::account_public_address> &change_addr, const size_t output_index, const bool &need_additional_txkeys, const std::vector<crypto::secret_key> &additional_tx_keys, std::vector<crypto::public_key> &additional_tx_public_keys, std::vector<rct::key> &amount_keys, - crypto::public_key &out_eph_public_key) ; + crypto::public_key &out_eph_public_key, + const bool use_view_tags, crypto::view_tag &view_tag) ; bool generate_output_ephemeral_keys(const size_t tx_version, const cryptonote::account_keys &sender_account_keys, const crypto::public_key &txkey_pub, const crypto::secret_key &tx_key, const cryptonote::tx_destination_entry &dst_entr, const boost::optional<cryptonote::account_public_address> &change_addr, const size_t output_index, const bool &need_additional_txkeys, const std::vector<crypto::secret_key> &additional_tx_keys, std::vector<crypto::public_key> &additional_tx_public_keys, std::vector<rct::key> &amount_keys, - crypto::public_key &out_eph_public_key) ; + crypto::public_key &out_eph_public_key, + const bool use_view_tags, crypto::view_tag &view_tag) ; bool generate_genesis_block( block& bl |