From 6e5e9c8e969207e68665f12665a54768090897e4 Mon Sep 17 00:00:00 2001 From: Narayan Desai Date: Mon, 12 Mar 2007 16:22:51 +0000 Subject: Merged in certs branch in preparation for 0.9.3pre2 git-svn-id: https://svn.mcs.anl.gov/repos/bcfg/trunk/bcfg2@2928 ce84e21b-d406-0410-9b95-82705330c041 --- src/lib/tlslite/utils/AES.py | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100755 src/lib/tlslite/utils/AES.py (limited to 'src/lib/tlslite/utils/AES.py') diff --git a/src/lib/tlslite/utils/AES.py b/src/lib/tlslite/utils/AES.py new file mode 100755 index 000000000..8413f4c10 --- /dev/null +++ b/src/lib/tlslite/utils/AES.py @@ -0,0 +1,31 @@ +"""Abstract class for AES.""" + +class AES: + def __init__(self, key, mode, IV, implementation): + if len(key) not in (16, 24, 32): + raise AssertionError() + if mode != 2: + raise AssertionError() + if len(IV) != 16: + raise AssertionError() + self.isBlockCipher = True + self.block_size = 16 + self.implementation = implementation + if len(key)==16: + self.name = "aes128" + elif len(key)==24: + self.name = "aes192" + elif len(key)==32: + self.name = "aes256" + else: + raise AssertionError() + + #CBC-Mode encryption, returns ciphertext + #WARNING: *MAY* modify the input as well + def encrypt(self, plaintext): + assert(len(plaintext) % 16 == 0) + + #CBC-Mode decryption, returns plaintext + #WARNING: *MAY* modify the input as well + def decrypt(self, ciphertext): + assert(len(ciphertext) % 16 == 0) \ No newline at end of file -- cgit v1.2.3-1-g7c22