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author | Narayan Desai <desai@mcs.anl.gov> | 2007-03-12 16:22:51 +0000 |
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committer | Narayan Desai <desai@mcs.anl.gov> | 2007-03-12 16:22:51 +0000 |
commit | 6e5e9c8e969207e68665f12665a54768090897e4 (patch) | |
tree | de198777d5041073db4634a24ca37efad2a1017f /src/lib/tlslite/utils/AES.py | |
parent | ac3eb44f16bc14e41ed62169ca36e9992509d7d6 (diff) | |
download | bcfg2-6e5e9c8e969207e68665f12665a54768090897e4.tar.gz bcfg2-6e5e9c8e969207e68665f12665a54768090897e4.tar.bz2 bcfg2-6e5e9c8e969207e68665f12665a54768090897e4.zip |
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
Diffstat (limited to 'src/lib/tlslite/utils/AES.py')
-rwxr-xr-x | src/lib/tlslite/utils/AES.py | 31 |
1 files changed, 31 insertions, 0 deletions
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)
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