implement Decrypter interface

CHANGELOG.md

@@ -1,6 +1,9 @@
 ## 更新日志
 
-### master 更新（Sep 11, 2020）:
+### master 更新（Sep 17, 2020）
+- 私钥新增Decrypt函数，实现crypto.Decrypter接口
+
+### master 更新（Sep 11, 2020）
 - 新增导入导出接口  
 
    | 接口名 | 接口功能 | 
@@ -28,13 +31,13 @@
 - 新增CHANGLOG文件
 
 
-### master 更新（Aug 13, 2020）:
+### master 更新（Aug 13, 2020）
 - 优化国密tls库，支持tls双国密证书通信。
 
 ### master 更新（Aug 7, 2020）
 - 将中国网安的两个底层密码库合并到一起。
 
-### master 更新（Jul 17, 2020）:
+### master 更新（Jul 17, 2020）
 - 上传中国网安国密密码库。
 
 

sm2/sm2enc.go

@@ -6,6 +6,7 @@ package sm2
 
 import (
 	"bytes"
+	"crypto"
 	"encoding/binary"
 	"errors"
 	"io"
@@ -18,6 +19,10 @@ import (
 var EncryptionErr = errors.New("sm2: encryption error")
 var DecryptionErr = errors.New("sm2: decryption error")
 
+func (key *PrivateKey) Decrypt(rand io.Reader, msg []byte, opts crypto.DecrypterOpts) (plaintext []byte, err error) {
+	return Decrypt(msg, key)
+}
+
 func keyDerivation(Z []byte, klen int) []byte {
 	var ct = 1
 	if klen%8 != 0 {

tls/conn.go

@@ -1288,6 +1288,7 @@ func (c *Conn) Handshake() error {
 		// If an error occurred during the hadshake try to flush the
 		// alert that might be left in the buffer.
 		c.flush()
+		fmt.Println("handshake error :", c.handshakeErr)
 	}
 
 	if c.handshakeErr == nil && !c.handshakeComplete() {

tls/gm_handshake_client.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build sigle_cert
+// +build single_cert
 
 package tls
 

tls/gm_handshake_client_double.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !sigle_cert
+// +build !single_cert
 
 package tls
 

tls/gm_handshake_server.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build sigle_cert
+// +build single_cert
 
 package tls
 

tls/gm_handshake_server_double.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !sigle_cert
+// +build !single_cert
 
 package tls