github.com/codingfuture/orig-energi3@v0.8.4/energi/consensus/signer.go (about)

     1  // Copyright 2019 The Energi Core Authors
     2  // This file is part of the Energi Core library.
     3  //
     4  // The Energi Core library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The Energi Core library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the Energi Core library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package consensus
    18  
    19  import (
    20  	"errors"
    21  	"math/big"
    22  
    23  	"github.com/ethereum/go-ethereum/common"
    24  	"github.com/ethereum/go-ethereum/core/types"
    25  )
    26  
    27  // NOTE: it MUST NOT for untrusted transactions
    28  type ConsensusSigner struct{}
    29  
    30  func NewConsensusSigner() *ConsensusSigner {
    31  	return &ConsensusSigner{}
    32  }
    33  
    34  func (cs ConsensusSigner) Equal(s2 types.Signer) bool {
    35  	_, ok := s2.(ConsensusSigner)
    36  	return ok
    37  }
    38  func (cs ConsensusSigner) SignatureValues(tx *types.Transaction, sig []byte) (r, s, v *big.Int, err error) {
    39  	return nil, nil, nil, errors.New("Not Supported")
    40  }
    41  func (cs ConsensusSigner) Hash(tx *types.Transaction) common.Hash {
    42  	return common.Hash{}
    43  }
    44  func (cs ConsensusSigner) Sender(tx *types.Transaction) (common.Address, error) {
    45  	if !tx.IsConsensus() {
    46  		return common.Address{}, errors.New("Not Consensus Tx")
    47  	}
    48  	return tx.ConsensusSender(), nil
    49  }