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Add view tags to outputs to reduce wallet scanning time

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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.
This commit is contained in:
j-berman 2021-11-15 05:23:53 -08:00
parent 6694597974
commit ea87b30f89
39 changed files with 1165 additions and 230 deletions
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9
tests/core_tests/chaingen.h
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@ -423,7 +423,8 @@ uint64_t sum_amount(const std::vector<cryptonote::tx_source_entry>& sources);
bool construct_miner_tx_manually(size_t height, uint64_t already_generated_coins,
const cryptonote::account_public_address& miner_address, cryptonote::transaction& tx,
uint64_t fee, cryptonote::keypair* p_txkey = nullptr);
uint64_t fee, uint8_t hf_version = 1,
cryptonote::keypair* p_txkey = nullptr);
bool construct_tx_to_key(const std::vector<test_event_entry>& events, cryptonote::transaction& tx,
const cryptonote::block& blk_head, const cryptonote::account_base& from, const var_addr_t& to, uint64_t amount,
@ -967,12 +968,14 @@ inline bool do_replay_file(const std::string& filename)
std::list<cryptonote::transaction> SET_NAME; \
MAKE_TX_MIX_LIST_RCT(VEC_EVENTS, SET_NAME, FROM, TO, AMOUNT, NMIX, HEAD);
#define MAKE_MINER_TX_AND_KEY_MANUALLY(TX, BLK, KEY) \
#define MAKE_MINER_TX_AND_KEY_AT_HF_MANUALLY(TX, BLK, HF_VERSION, KEY) \
transaction TX; \
if (!construct_miner_tx_manually(get_block_height(BLK) + 1, generator.get_already_generated_coins(BLK), \
miner_account.get_keys().m_account_address, TX, 0, KEY)) \
miner_account.get_keys().m_account_address, TX, 0, HF_VERSION, KEY)) \
return false;
#define MAKE_MINER_TX_AND_KEY_MANUALLY(TX, BLK, KEY) MAKE_MINER_TX_AND_KEY_AT_HF_MANUALLY(TX, BLK, 1, KEY)
#define MAKE_MINER_TX_MANUALLY(TX, BLK) MAKE_MINER_TX_AND_KEY_MANUALLY(TX, BLK, 0)
#define SET_EVENT_VISITOR_SETT(VEC_EVENTS, SETT) VEC_EVENTS.push_back(event_visitor_settings(SETT));