diff --git a/cipher/cipher.go b/cipher/cipher.go
index a9ce756..5f16434 100644
--- a/cipher/cipher.go
+++ b/cipher/cipher.go
@@ -45,7 +45,8 @@ type blockCipher struct {
 }
 
 func (blockCipher *blockCipher) Encrypt(plaintext []byte) []byte {
-	plaintext = blockCipher.padding.Padding(plaintext, blockCipher.encrypt.BlockSize())
+	//TODO: modify By Eason ECB nopadding
+	//plaintext = blockCipher.padding.Padding(plaintext, blockCipher.encrypt.BlockSize())
 	ciphertext := make([]byte, len(plaintext))
 	blockCipher.encrypt.CryptBlocks(ciphertext, plaintext)
 	return ciphertext
diff --git a/crypto/aes_test.go b/crypto/aes_test.go
index a1892ee..4d61949 100644
--- a/crypto/aes_test.go
+++ b/crypto/aes_test.go
@@ -5,8 +5,8 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/89hmdys/toast/cipher"
-	"github.com/89hmdys/toast/crypto"
+	"github.com/QuanTran91/toast/cipher"
+	"github.com/QuanTran91/toast/crypto"
 )
 
 var key = "|-8xrgPfS)Aa4xtAIL^k5qX)$Y5Rim9Z"
diff --git a/crypto/des_test.go b/crypto/des_test.go
index 7e07e4c..97a7fcb 100644
--- a/crypto/des_test.go
+++ b/crypto/des_test.go
@@ -5,8 +5,8 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/89hmdys/toast/cipher"
-	"github.com/89hmdys/toast/crypto"
+	"github.com/QuanTran91/toast/cipher"
+	"github.com/QuanTran91/toast/crypto"
 )
 
 func Test_DES_ECB(t *testing.T) {
diff --git a/crypto/factory.go b/crypto/factory.go
index f54b841..06a0d21 100644
--- a/crypto/factory.go
+++ b/crypto/factory.go
@@ -4,8 +4,8 @@ import (
 	"crypto/aes"
 	"crypto/des"
 
-	. "github.com/89hmdys/toast/cipher"
-	"github.com/89hmdys/toast/rsa"
+	. "github.com/QuanTran91/toast/cipher"
+	"github.com/QuanTran91/toast/rsa"
 )
 
 /*
diff --git a/crypto/rsa_test.go b/crypto/rsa_test.go
index 3c01087..549d0f8 100644
--- a/crypto/rsa_test.go
+++ b/crypto/rsa_test.go
@@ -6,8 +6,8 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/89hmdys/toast/crypto"
-	"github.com/89hmdys/toast/rsa"
+	"github.com/QuanTran91/toast/crypto"
+	"github.com/QuanTran91/toast/rsa"
 )
 
 func Test_LoadFromPEMFile(t *testing.T) {
diff --git a/rsa/cipher.go b/rsa/cipher.go
index f13f1a9..67fde57 100644
--- a/rsa/cipher.go
+++ b/rsa/cipher.go
@@ -5,7 +5,7 @@ import (
 	"crypto"
 
 	"errors"
-	"github.com/Sirupsen/logrus"
+	"github.com/sirupsen/logrus"
 )
 
 type Cipher interface {
diff --git a/rsa/key.go b/rsa/key.go
index 95fa319..e0edef8 100644
--- a/rsa/key.go
+++ b/rsa/key.go
@@ -40,6 +40,18 @@ func ParsePKCS1Key(publicKey, privateKey []byte) (Key, error) {
 	return &key{publicKey: puk.(*rsa.PublicKey), privateKey: prk}, nil
 }
 
+func ParsePKCS1KeyByCert(publicKey, privateKey []byte) (Key, error) {
+	puk, err := x509.ParseCertificate(publicKey)
+	if err != nil {
+		return nil, err
+	}
+	prk, err := x509.ParsePKCS1PrivateKey(privateKey)
+	if err != nil {
+		return nil, err
+	}
+	return &key{publicKey: puk.PublicKey.(*rsa.PublicKey), privateKey: prk}, nil
+}
+
 func LoadKeyFromPEMFile(publicKeyFilePath, privateKeyFilePath string, ParseKey func([]byte, []byte) (Key, error)) (Key, error) {
 
 	//TODO 断言如果入参为"" ，则直接报错
@@ -71,6 +83,40 @@ func LoadKeyFromPEMFile(publicKeyFilePath, privateKeyFilePath string, ParseKey f
 	return ParseKey(puk.Bytes, prk.Bytes)
 }
 
+//Eason Lin
+func LoadKeyFromPEMByte(pukBytes, prkBytes []byte, ParseKey func([]byte, []byte) (Key, error)) (Key, error) {
+	puk, _ := pem.Decode(pukBytes)
+	if puk == nil {
+		return nil, errors.New("publicKey is not pem formate")
+	}
+
+	prk, _ := pem.Decode(prkBytes)
+	if prk == nil {
+		return nil, errors.New("privateKey is not pem formate")
+	}
+
+	return ParseKey(puk.Bytes, prk.Bytes)
+}
+
+func LoadKeyFromDerFile(publicKeyFilePath, privateKeyFilePath string, ParseKey func([]byte, []byte) (Key, error)) (Key, error) {
+
+	publicKeyFilePath = strings.TrimSpace(publicKeyFilePath)
+
+	pukBytes, err := ioutil.ReadFile(publicKeyFilePath)
+	if err != nil {
+		return nil, err
+	}
+
+	privateKeyFilePath = strings.TrimSpace(privateKeyFilePath)
+
+	prkBytes, err := ioutil.ReadFile(privateKeyFilePath)
+	if err != nil {
+		return nil, err
+	}
+
+	return ParseKey(pukBytes, prkBytes)
+}
+
 type key struct {
 	publicKey  *rsa.PublicKey
 	privateKey *rsa.PrivateKey
diff --git a/rsa/mode.go b/rsa/mode.go
index b14e614..44856dc 100644
--- a/rsa/mode.go
+++ b/rsa/mode.go
@@ -4,7 +4,9 @@ import (
 	"crypto"
 	"crypto/rand"
 	"crypto/rsa"
+	"crypto/sha1"
 	"errors"
+	"hash"
 )
 
 type CipherMode interface {
@@ -64,18 +66,18 @@ func (pkcs1v15 *pkcs1v15Sign) Verify(src []byte, sign []byte, hash crypto.Hash,
 	return rsa.VerifyPKCS1v15(puk, hash, hashed, sign)
 }
 
-//type oaepCipher struct {
-//	h hash.Hash
-//}
-//
-//func NewOAEPCipher() CipherMode {
-//	return new(oaepCipher)
-//}
-//
-//func (oaep *oaepCipher) Encrypt(plainText []byte, puk *rsa.PublicKey) ([]byte, error) {
-//	return rsa.EncryptOAEP(oaep.h, rand.Reader, puk, plainText, make([]byte, 0))
-//}
-//
-//func (oaep *oaepCipher) Decrypt(cipherText []byte, prk *rsa.PrivateKey) ([]byte, error) {
-//	return rsa.DecryptOAEP(oaep.h, rand.Reader, prk, cipherText, make([]byte, 0))
-//}
+type oaepCipher struct {
+	h hash.Hash
+}
+
+func NewOAEPCipher() CipherMode {
+	return &oaepCipher{h: sha1.New()}
+}
+
+func (oaep *oaepCipher) Encrypt(plainText []byte, puk *rsa.PublicKey) ([]byte, error) {
+	return rsa.EncryptOAEP(oaep.h, rand.Reader, puk, plainText, make([]byte, 0))
+}
+
+func (oaep *oaepCipher) Decrypt(cipherText []byte, prk *rsa.PrivateKey) ([]byte, error) {
+	return rsa.DecryptOAEP(oaep.h, rand.Reader, prk, cipherText, make([]byte, 0))
+}