diff --git a/shadowsocks/crypto/ctypes_openssl.py b/shadowsocks/crypto/ctypes_openssl.py
index 7c9254a..fd20832 100644
--- a/shadowsocks/crypto/ctypes_openssl.py
+++ b/shadowsocks/crypto/ctypes_openssl.py
@@ -150,7 +150,7 @@ ciphers = {
 }
 
 
-def test():
+def run_method(method):
     from os import urandom
     import random
     import time
@@ -165,8 +165,8 @@ def test():
     # decipher = M2Crypto.EVP.Cipher('aes_128_cfb', 'k' * 32, 'i' * 16, 0,
     #                key_as_bytes=0, d='md5', salt=None, i=1,
     #                padding=1)
-    cipher = CtypesCrypto(b'aes-128-cfb', b'k' * 32, b'i' * 16, 1)
-    decipher = CtypesCrypto(b'aes-128-cfb', b'k' * 32, b'i' * 16, 0)
+    cipher = CtypesCrypto(method, b'k' * 32, b'i' * 16, 1)
+    decipher = CtypesCrypto(method, b'k' * 32, b'i' * 16, 0)
 
     # cipher = Salsa20Cipher('salsa20-ctr', 'k' * 32, 'i' * 8, 1)
     # decipher = Salsa20Cipher('salsa20-ctr', 'k' * 32, 'i' * 8, 1)
@@ -191,5 +191,33 @@ def test():
     assert b''.join(results) == plain
 
 
+def test_aes_128_cfb():
+    run_method(b'aes-128-cfb')
+
+
+def test_aes_256_cfb():
+    run_method(b'aes-256-cfb')
+
+
+def test_aes_128_cfb8():
+    run_method(b'aes-128-cfb8')
+
+
+def test_aes_256_ofb():
+    run_method(b'aes-256-ofb')
+
+
+def test_aes_256_ctr():
+    run_method(b'aes-256-ctr')
+
+
+def test_bf_cfb():
+    run_method(b'bf-cfb')
+
+
+def test_rc4():
+    run_method(b'rc4')
+
+
 if __name__ == '__main__':
-    test()
+    test_aes_128_cfb()
diff --git a/shadowsocks/lru_cache.py b/shadowsocks/lru_cache.py
index 20110ce..6400a2c 100644
--- a/shadowsocks/lru_cache.py
+++ b/shadowsocks/lru_cache.py
@@ -1,6 +1,26 @@
 #!/usr/bin/python
 # -*- coding: utf-8 -*-
 
+# Copyright (c) 2014 clowwindy
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
 from __future__ import absolute_import, division, print_function, \
     with_statement
 
diff --git a/tests/test.py b/tests/test.py
index 5d970c8..b04862f 100755
--- a/tests/test.py
+++ b/tests/test.py
@@ -1,6 +1,26 @@
 #!/usr/bin/python
 # -*- coding: utf-8 -*-
 
+# Copyright (c) 2014 clowwindy
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
 from __future__ import absolute_import, division, print_function, \
     with_statement