diff --git a/pkg/crypto/aes_cbc.go b/pkg/crypto/aes_cbc.go
index 1043e1a..67b28d7 100644
--- a/pkg/crypto/aes_cbc.go
+++ b/pkg/crypto/aes_cbc.go
@@ -1,3 +1,11 @@
+// Copyright 2021, Chef.  All rights reserved.
+// https://github.com/q191201771/naza
+//
+// Use of this source code is governed by a MIT-style license
+// that can be found in the License file.
+//
+// Author: Chef (191201771@qq.com)
+
 package crypto
 
 import (
diff --git a/pkg/crypto/aes_cbc_test.go b/pkg/crypto/aes_cbc_test.go
index b284893..f0ccce3 100644
--- a/pkg/crypto/aes_cbc_test.go
+++ b/pkg/crypto/aes_cbc_test.go
@@ -1,3 +1,11 @@
+// Copyright 2021, Chef.  All rights reserved.
+// https://github.com/q191201771/naza
+//
+// Use of this source code is governed by a MIT-style license
+// that can be found in the License file.
+//
+// Author: Chef (191201771@qq.com)
+
 package crypto
 
 import (
diff --git a/pkg/crypto/pkcs.go b/pkg/crypto/pkcs.go
index 60e1ec0..2af0cea 100644
--- a/pkg/crypto/pkcs.go
+++ b/pkg/crypto/pkcs.go
@@ -1,3 +1,11 @@
+// Copyright 2021, Chef.  All rights reserved.
+// https://github.com/q191201771/naza
+//
+// Use of this source code is governed by a MIT-style license
+// that can be found in the License file.
+//
+// Author: Chef (191201771@qq.com)
+
 package crypto
 
 import (
diff --git a/pkg/crypto/pkcs_test.go b/pkg/crypto/pkcs_test.go
index 3645726..ba23ad7 100644
--- a/pkg/crypto/pkcs_test.go
+++ b/pkg/crypto/pkcs_test.go
@@ -1,3 +1,11 @@
+// Copyright 2021, Chef.  All rights reserved.
+// https://github.com/q191201771/naza
+//
+// Use of this source code is governed by a MIT-style license
+// that can be found in the License file.
+//
+// Author: Chef (191201771@qq.com)
+
 package crypto
 
 import (