From 7e974f306adb82dd38cc4adc4adbe624619c6f1a Mon Sep 17 00:00:00 2001
From: root <root@raspberrypi.(none)>
Date: Fri, 3 Apr 2015 16:41:45 +0200
Subject: add lib
---
lib/beaker/crypto/pycrypto.py | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644 lib/beaker/crypto/pycrypto.py
(limited to 'lib/beaker/crypto/pycrypto.py')
diff --git a/lib/beaker/crypto/pycrypto.py b/lib/beaker/crypto/pycrypto.py
new file mode 100644
index 000000000..a3eb4d9db
--- /dev/null
+++ b/lib/beaker/crypto/pycrypto.py
@@ -0,0 +1,31 @@
+"""Encryption module that uses pycryptopp or pycrypto"""
+try:
+ # Pycryptopp is preferred over Crypto because Crypto has had
+ # various periods of not being maintained, and pycryptopp uses
+ # the Crypto++ library which is generally considered the 'gold standard'
+ # of crypto implementations
+ from pycryptopp.cipher import aes
+
+ def aesEncrypt(data, key):
+ cipher = aes.AES(key)
+ return cipher.process(data)
+
+ # magic.
+ aesDecrypt = aesEncrypt
+
+except ImportError:
+ from Crypto.Cipher import AES
+
+ def aesEncrypt(data, key):
+ cipher = AES.new(key)
+
+ data = data + (" " * (16 - (len(data) % 16)))
+ return cipher.encrypt(data)
+
+ def aesDecrypt(data, key):
+ cipher = AES.new(key)
+
+ return cipher.decrypt(data).rstrip()
+
+def getKeyLength():
+ return 32
--
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