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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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70
tests/core_tests/rct.h
View file

@ -70,7 +70,7 @@ struct gen_rct_tx_validation_base : public test_chain_unit_base
}
bool generate_with_full(std::vector<test_event_entry>& events, const int *out_idx, int mixin,
uint64_t amount_paid, size_t second_rewind, uint8_t last_version, const rct::RCTConfig &rct_config, bool valid,
uint64_t amount_paid, size_t second_rewind, uint8_t last_version, const rct::RCTConfig &rct_config, bool use_view_tags, bool valid,
const std::function<void(std::vector<cryptonote::tx_source_entry> &sources, std::vector<cryptonote::tx_destination_entry> &destinations)> &pre_tx,
const std::function<void(cryptonote::transaction &tx)> &post_tx) const;
bool generate_with(std::vector<test_event_entry>& events, const int *out_idx, int mixin,
@ -266,6 +266,74 @@ struct gen_rct_tx_rct_altered_extra : public gen_rct_tx_validation_base
};
template<> struct get_test_options<gen_rct_tx_rct_altered_extra>: public get_test_options<gen_rct_tx_validation_base> {};
struct gen_rct_tx_pre_rct_has_no_view_tag_before_hf_view_tags : public gen_rct_tx_validation_base
{
bool generate(std::vector<test_event_entry>& events) const;
};
template<> struct get_test_options<gen_rct_tx_pre_rct_has_no_view_tag_before_hf_view_tags>: public get_test_options<gen_rct_tx_validation_base> {};
struct gen_rct_tx_pre_rct_has_no_view_tag_from_hf_view_tags : public gen_rct_tx_validation_base
{
bool generate(std::vector<test_event_entry>& events) const;
};
template<> struct get_test_options<gen_rct_tx_pre_rct_has_no_view_tag_from_hf_view_tags> {
const std::pair<uint8_t, uint64_t> hard_forks[5] = {std::make_pair(1, 0), std::make_pair(2, 1), std::make_pair(4, 65), std::make_pair(HF_VERSION_VIEW_TAGS, 69), std::make_pair(0, 0)};
const cryptonote::test_options test_options = {
hard_forks, 0
};
};
struct gen_rct_tx_pre_rct_has_view_tag_before_hf_view_tags : public gen_rct_tx_validation_base
{
bool generate(std::vector<test_event_entry>& events) const;
};
template<> struct get_test_options<gen_rct_tx_pre_rct_has_view_tag_before_hf_view_tags>: public get_test_options<gen_rct_tx_validation_base> {};
struct gen_rct_tx_pre_rct_has_view_tag_from_hf_view_tags : public gen_rct_tx_validation_base
{
bool generate(std::vector<test_event_entry>& events) const;
};
template<> struct get_test_options<gen_rct_tx_pre_rct_has_view_tag_from_hf_view_tags> {
const std::pair<uint8_t, uint64_t> hard_forks[5] = {std::make_pair(1, 0), std::make_pair(2, 1), std::make_pair(4, 65), std::make_pair(HF_VERSION_VIEW_TAGS, 69), std::make_pair(0, 0)};
const cryptonote::test_options test_options = {
hard_forks, 0
};
};
struct gen_rct_tx_rct_has_no_view_tag_before_hf_view_tags : public gen_rct_tx_validation_base
{
bool generate(std::vector<test_event_entry>& events) const;
};
template<> struct get_test_options<gen_rct_tx_rct_has_no_view_tag_before_hf_view_tags>: public get_test_options<gen_rct_tx_validation_base> {};
struct gen_rct_tx_rct_has_no_view_tag_from_hf_view_tags : public gen_rct_tx_validation_base
{
bool generate(std::vector<test_event_entry>& events) const;
};
template<> struct get_test_options<gen_rct_tx_rct_has_no_view_tag_from_hf_view_tags> {
const std::pair<uint8_t, uint64_t> hard_forks[5] = {std::make_pair(1, 0), std::make_pair(2, 1), std::make_pair(4, 65), std::make_pair(HF_VERSION_VIEW_TAGS+1, 69), std::make_pair(0, 0)};
const cryptonote::test_options test_options = {
hard_forks, 0
};
};
struct gen_rct_tx_rct_has_view_tag_before_hf_view_tags : public gen_rct_tx_validation_base
{
bool generate(std::vector<test_event_entry>& events) const;
};
template<> struct get_test_options<gen_rct_tx_rct_has_view_tag_before_hf_view_tags>: public get_test_options<gen_rct_tx_validation_base> {};
struct gen_rct_tx_rct_has_view_tag_from_hf_view_tags : public gen_rct_tx_validation_base
{
bool generate(std::vector<test_event_entry>& events) const;
};
template<> struct get_test_options<gen_rct_tx_rct_has_view_tag_from_hf_view_tags> {
const std::pair<uint8_t, uint64_t> hard_forks[5] = {std::make_pair(1, 0), std::make_pair(2, 1), std::make_pair(4, 65), std::make_pair(HF_VERSION_VIEW_TAGS, 69), std::make_pair(0, 0)};
const cryptonote::test_options test_options = {
hard_forks, 0
};
};
struct gen_rct_tx_uses_output_too_early : public gen_rct_tx_validation_base
{
bool generate(std::vector<test_event_entry>& events) const;