core: BA-based consensus core. (#93)

1 files changed, 6 insertions, 0 deletions

diff --git a/crypto/utils.go b/crypto/utils.go
index dfb4987..07a8b2b 100644
--- a/crypto/utils.go
+++ b/crypto/utils.go
@@ -18,6 +18,8 @@
 package crypto
 
 import (
+	"encoding/hex"
+
 	"github.com/ethereum/go-ethereum/crypto"
 
 	"github.com/dexon-foundation/dexon-consensus-core/common"
@@ -33,3 +35,7 @@ func Keccak256Hash(data ...[]byte) (h common.Hash) {
 func (sig Signature) Clone() Signature {
 	return append(Signature{}, sig...)
 }
+
+func (sig Signature) String() string {
+	return hex.EncodeToString([]byte(sig[:]))
+}