mirror of https://github.com/poanetwork/quorum.git
61 lines
1.9 KiB
Go
61 lines
1.9 KiB
Go
// Copyright 2017 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package istanbul
|
|
|
|
import (
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"github.com/ethereum/go-ethereum/log"
|
|
"github.com/ethereum/go-ethereum/rlp"
|
|
"golang.org/x/crypto/sha3"
|
|
)
|
|
|
|
func RLPHash(v interface{}) (h common.Hash) {
|
|
hw := sha3.NewLegacyKeccak256()
|
|
rlp.Encode(hw, v)
|
|
hw.Sum(h[:0])
|
|
return h
|
|
}
|
|
|
|
// GetSignatureAddress gets the signer address from the signature
|
|
func GetSignatureAddress(data []byte, sig []byte) (common.Address, error) {
|
|
// 1. Keccak data
|
|
hashData := crypto.Keccak256(data)
|
|
// 2. Recover public key
|
|
pubkey, err := crypto.SigToPub(hashData, sig)
|
|
if err != nil {
|
|
return common.Address{}, err
|
|
}
|
|
return crypto.PubkeyToAddress(*pubkey), nil
|
|
}
|
|
|
|
func CheckValidatorSignature(valSet ValidatorSet, data []byte, sig []byte) (common.Address, error) {
|
|
// 1. Get signature address
|
|
signer, err := GetSignatureAddress(data, sig)
|
|
if err != nil {
|
|
log.Error("Failed to get signer address", "err", err)
|
|
return common.Address{}, err
|
|
}
|
|
|
|
// 2. Check validator
|
|
if _, val := valSet.GetByAddress(signer); val != nil {
|
|
return val.Address(), nil
|
|
}
|
|
|
|
return common.Address{}, ErrUnauthorizedAddress
|
|
}
|