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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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34
tests/core_tests/block_validation.h
View file

@ -230,3 +230,37 @@ struct get_test_options<gen_block_low_coinbase> {
hard_forks, 0
};
};
struct gen_block_miner_tx_out_has_no_view_tag_before_hf_view_tags : public gen_block_accepted_base<2>
{
bool generate(std::vector<test_event_entry>& events) const;
};
struct gen_block_miner_tx_out_has_no_view_tag_from_hf_view_tags : public gen_block_verification_base<1>
{
bool generate(std::vector<test_event_entry>& events) const;
};
template<>
struct get_test_options<gen_block_miner_tx_out_has_no_view_tag_from_hf_view_tags> {
const std::pair<uint8_t, uint64_t> hard_forks[3] = {std::make_pair(1, 0), std::make_pair(HF_VERSION_VIEW_TAGS+1, 1), std::make_pair(0, 0)};
const cryptonote::test_options test_options = {
hard_forks, 0
};
};
struct gen_block_miner_tx_out_has_view_tag_before_hf_view_tags : public gen_block_verification_base<1>
{
bool generate(std::vector<test_event_entry>& events) const;
};
struct gen_block_miner_tx_out_has_view_tag_from_hf_view_tags : public gen_block_accepted_base<2>
{
bool generate(std::vector<test_event_entry>& events) const;
};
template<>
struct get_test_options<gen_block_miner_tx_out_has_view_tag_from_hf_view_tags> {
const std::pair<uint8_t, uint64_t> hard_forks[3] = {std::make_pair(1, 0), std::make_pair(HF_VERSION_VIEW_TAGS, 1), std::make_pair(0, 0)};
const cryptonote::test_options test_options = {
hard_forks, 0
};
};