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#!/usr/bin/python
import botan, base64
class MyCipher(botan.BlockCipher):
def __init__(self):
botan.BlockCipher.__init__(self, 16, 16, 32, 8)
def encrypt(self, val):
print "encrypt", val
return val.swapcase()
def decrypt(self, val):
print "decrypt", val
return val.swapcase()
def set_key(self, key):
print "set_key", key
def clone(self):
print "cloning"
return MyCipher()
def name(self):
print "naming"
return "MyCipher"
cipher = botan.BlockCipher("AES-128")
print cipher.block_size
print cipher.keylength_min
print cipher.keylength_max
print cipher.keylength_mod
print cipher.name()
for kl in range(1, 128):
if cipher.valid_keylength(kl):
print "1",
else:
print "0",
print
key = botan.SymmetricKey(16)
cipher.set_key(key)
ciphertext = cipher.encrypt("ABCDEFGH12345678")
print base64.b16encode(ciphertext)
cipher2 = cipher.clone()
cipher2.set_key(key)
plaintext = cipher2.decrypt(ciphertext)
print plaintext
botan.get_info(cipher)
mycipher = MyCipher()
botan.get_info(mycipher)
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