mirror of https://github.com/poanetwork/quorum.git
54 lines
1.9 KiB
Go
54 lines
1.9 KiB
Go
|
// Copyright 2016 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 bind
|
||
|
|
|
||
|
|
import (
|
||
|
|
"errors"
|
||
|
|
|
||
|
|
"github.com/ethereum/go-ethereum/common"
|
||
|
|
"github.com/ethereum/go-ethereum/core/types"
|
||
|
|
"github.com/ethereum/go-ethereum/crypto"
|
||
|
|
)
|
||
|
|
|
||
|
|
// NewTransactor is a utility method to easily create a transaction signer from
|
||
|
|
// an encrypted json key file and the associated passphrase.
|
||
|
|
func NewTransactor(keyjson string, passphrase string) (*TransactOpts, error) {
|
||
|
|
key, err := crypto.DecryptKey([]byte(keyjson), passphrase)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
return NewKeyedTransactor(key), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// NewKeyedTransactor is a utility method to easily create a transaction signer
|
||
|
|
// from a plain go-ethereum crypto key.
|
||
|
|
func NewKeyedTransactor(key *crypto.Key) *TransactOpts {
|
||
|
|
return &TransactOpts{
|
||
|
|
Account: key.Address,
|
||
|
|
Signer: func(address common.Address, tx *types.Transaction) (*types.Transaction, error) {
|
||
|
|
if address != key.Address {
|
||
|
|
return nil, errors.New("not authorized to sign this account")
|
||
|
|
}
|
||
|
|
signature, err := crypto.Sign(tx.SigHash().Bytes(), key.PrivateKey)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
return tx.WithSignature(signature)
|
||
|
|
},
|
||
|
|
}
|
||
|
|
}
|