Update tlslite to 0.4.6.

third_party/tlslite/tlslite/utils/pycrypto_tripledes.py

Index: third_party/tlslite/tlslite/utils/pycrypto_tripledes.py
diff --git a/third_party/tlslite/tlslite/utils/pycrypto_tripledes.py b/third_party/tlslite/tlslite/utils/pycrypto_tripledes.py
index 0bc1104ab993f6bc1f2e525fdcb0e604a90b408f..8117f34b85e168c5330a335887889c367da28cbc 100644
--- a/third_party/tlslite/tlslite/utils/pycrypto_tripledes.py
+++ b/third_party/tlslite/tlslite/utils/pycrypto_tripledes.py
@@ -1,7 +1,10 @@
+# Author: Trevor Perrin
+# See the LICENSE file for legal information regarding use of this file.
+
 """PyCrypto 3DES implementation."""
 
-from cryptomath import *
-from tripledes import *
+from .cryptomath import *
+from .tripledes import *
 
 if pycryptoLoaded:
     import Crypto.Cipher.DES3
@@ -13,10 +16,14 @@ if pycryptoLoaded:
 
         def __init__(self, key, mode, IV):
             TripleDES.__init__(self, key, mode, IV, "pycrypto")
+            key = bytes(key)
+            IV = bytes(IV)
             self.context = Crypto.Cipher.DES3.new(key, mode, IV)
 
         def encrypt(self, plaintext):
-            return self.context.encrypt(plaintext)
+            plaintext = bytes(plaintext)
+            return bytearray(self.context.encrypt(plaintext))
 
         def decrypt(self, ciphertext):
-            return self.context.decrypt(ciphertext)
+            ciphertext = bytes(ciphertext)
+            return bytearray(self.context.decrypt(ciphertext))