From ba0e5459758b7330cc8d10984c0def623dcbae84 Mon Sep 17 00:00:00 2001
From: nkbai <nkbai@163.com>
Date: Fri, 30 Jun 2017 12:10:15 +0800
Subject: [PATCH] core/types: use crypto's api to replace magic number usage

---
 core/types/transaction_signing.go | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/core/types/transaction_signing.go b/core/types/transaction_signing.go
index b0f3275b2a..25108b7ea3 100644
--- a/core/types/transaction_signing.go
+++ b/core/types/transaction_signing.go
@@ -90,8 +90,7 @@ func Sender(signer Signer, tx *Transaction) (common.Address, error) {
 	if err != nil {
 		return common.Address{}, err
 	}
-	var addr common.Address
-	copy(addr[:], crypto.Keccak256(pubkey[1:])[12:])
+	addr := crypto.PubkeyToAddress(*crypto.ToECDSAPub(pubkey))
 	tx.from.Store(sigCache{signer: signer, from: addr})
 	return addr, nil
 }