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cryptonote: sort tx_extra fields

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This removes some small amount of fingerprinting entropy.
There is no consensus rule to require this since this field
is technically free form, and a transaction is free to have
custom data in it.
This commit is contained in:
moneromooo-monero 2018-08-03 10:21:08 +00:00
parent 91c7d68b2d
commit 9907ea0694
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GPG key ID: 686F07454D6CEFC3
5 changed files with 177 additions and 1 deletions
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2
src/cryptonote_basic/cryptonote_format_utils.h
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@ -31,6 +31,7 @@
#pragma once
#include "blobdatatype.h"
#include "cryptonote_basic_impl.h"
#include "tx_extra.h"
#include "account.h"
#include "subaddress_index.h"
#include "include_base_utils.h"
@ -64,6 +65,7 @@ namespace cryptonote
}
bool parse_tx_extra(const std::vector<uint8_t>& tx_extra, std::vector<tx_extra_field>& tx_extra_fields);
bool sort_tx_extra(const std::vector<uint8_t>& tx_extra, std::vector<uint8_t> &sorted_tx_extra, bool allow_partial = false);
crypto::public_key get_tx_pub_key_from_extra(const std::vector<uint8_t>& tx_extra, size_t pk_index = 0);
crypto::public_key get_tx_pub_key_from_extra(const transaction_prefix& tx, size_t pk_index = 0);
crypto::public_key get_tx_pub_key_from_extra(const transaction& tx, size_t pk_index = 0);