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#420 - calculate hash for raw transaction as single funtion

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This commit is contained in:
Vlad Dobromyslov 2022-08-30 08:18:05 +03:00
parent 1f3beba32a
commit 7b574e3db2
2 changed files with 18 additions and 10 deletions
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25
libraries/plugins/peerplays_sidechain/ethereum/transaction.cpp
View file

@ -1,6 +1,7 @@
#include <graphene/peerplays_sidechain/ethereum/transaction.hpp>
#include <boost/algorithm/hex.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/property_tree/json_parser.hpp>
#include <boost/property_tree/ptree.hpp>
@ -12,7 +13,6 @@
#include <graphene/peerplays_sidechain/ethereum/decoders.hpp>
#include <graphene/peerplays_sidechain/ethereum/encoders.hpp>
#include <graphene/peerplays_sidechain/ethereum/types.hpp>
#include <graphene/peerplays_sidechain/ethereum/utils.hpp>
namespace graphene { namespace peerplays_sidechain { namespace ethereum {
@ -54,6 +54,15 @@ void transaction::deserialize(const std::string &raw_tx) {
//! raw_transaction
bytes raw_transaction::hash() const {
bytes hash;
hash.resize(32);
const auto transaction_string = boost::algorithm::unhex(remove_0x(serialize()));
keccak_256((const unsigned char *)transaction_string.data(), transaction_string.size(), (unsigned char *)hash.data());
return hash;
}
signed_transaction raw_transaction::sign(const std::string &private_key) const {
//! Prepare signed transaction
signed_transaction tr;
@ -64,30 +73,26 @@ signed_transaction raw_transaction::sign(const std::string &private_key) const {
tr.value = value;
tr.data = data;
//! Calculate keccak hash of transaction
bytes hash;
hash.resize(32);
const auto transaction_string = boost::algorithm::unhex(remove_0x(serialize()));
keccak_256((const unsigned char *)transaction_string.data(), transaction_string.size(), (unsigned char *)hash.data());
const bytes priv_key = parse_hex(private_key);
int recid = 0;
secp256k1_ecdsa_recoverable_signature sig;
FC_ASSERT(secp256k1_ecdsa_sign_recoverable(eth_context(), &sig, (const unsigned char *)hash.data(), (const unsigned char *)priv_key.data(), NULL, NULL));
FC_ASSERT(secp256k1_ecdsa_sign_recoverable(eth_context(), &sig, (const unsigned char *)hash().data(), (const unsigned char *)priv_key.data(), NULL, NULL));
fc::ecc::compact_signature result;
FC_ASSERT(secp256k1_ecdsa_recoverable_signature_serialize_compact(eth_context(), (unsigned char *)result.begin() + 1, &recid, &sig));
bytes v = bytes{char(recid + from_hex<int>(chain_id) * 2 + 35)};
bytes r;
for (int i = 1; i < 33; i++)
r.emplace_back((char)result.at(i));
bytes v = bytes{char(recid + from_hex<int>(chain_id) * 2 + 35)};
bytes s;
for (int i = 33; i < 65; i++)
s.emplace_back((char)result.at(i));
tr.v = fc::to_hex((char *)&v[0], v.size());
tr.r = fc::to_hex((char *)&r[0], r.size());
tr.v = fc::to_hex((char *)&v[0], v.size());
tr.s = fc::to_hex((char *)&s[0], s.size());
return tr;

3
libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/ethereum/transaction.hpp
View file

@ -4,6 +4,8 @@
#include <string>
#include <vector>
#include <graphene/peerplays_sidechain/ethereum/types.hpp>
namespace graphene { namespace peerplays_sidechain { namespace ethereum {
class base_transaction {
@ -34,6 +36,7 @@ public:
std::string data;
std::string chain_id;
bytes hash() const;
signed_transaction sign(const std::string &private_key) const;
virtual std::string serialize() const override;