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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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3
src/serialization/json_object.h
View file

@ -230,6 +230,9 @@ void fromJsonValue(const rapidjson::Value& val, cryptonote::txout_to_scripthash&
void toJsonValue(rapidjson::Writer<epee::byte_stream>& dest, const cryptonote::txout_to_key& txout);
void fromJsonValue(const rapidjson::Value& val, cryptonote::txout_to_key& txout);
void toJsonValue(rapidjson::Writer<epee::byte_stream>& dest, const cryptonote::txout_to_tagged_key& txout);
void fromJsonValue(const rapidjson::Value& val, cryptonote::txout_to_tagged_key& txout);
void toJsonValue(rapidjson::Writer<epee::byte_stream>& dest, const cryptonote::tx_out& txout);
void fromJsonValue(const rapidjson::Value& val, cryptonote::tx_out& txout);