Implement AES-GCM in tlslite.

third_party/tlslite/tlslite/utils/aes.py

Index: third_party/tlslite/tlslite/utils/aes.py
diff --git a/third_party/tlslite/tlslite/utils/aes.py b/third_party/tlslite/tlslite/utils/aes.py
index 95afaa340fe7cb9183b872cd299b2ad860f77c61..5a038fb9f18ecacf481890a776038e9f4204f5f1 100644
--- a/third_party/tlslite/tlslite/utils/aes.py
+++ b/third_party/tlslite/tlslite/utils/aes.py
@@ -12,6 +12,7 @@ class AES(object):
         if len(IV) != 16:
             raise AssertionError()
         self.isBlockCipher = True
+        self.isAEAD = False
         self.block_size = 16
         self.implementation = implementation
         if len(key)==16:
@@ -31,4 +32,4 @@ class AES(object):
     #CBC-Mode decryption, returns plaintext
     #WARNING: *MAY* modify the input as well
     def decrypt(self, ciphertext):
-        assert(len(ciphertext) % 16 == 0)
+        assert(len(ciphertext) % 16 == 0)