0,0 → 1,52 |
from blockcipher import * |
try: |
import Crypto.Cipher.IDEA |
except ImportError: |
print "Crypto.Cipher.IDEA isn't available. You're probably using the Debian pycrypto version. Install the original pycrypto for IDEA." |
raise |
|
def new(key,mode=MODE_ECB,IV=None,counter=None,segment_size=None): |
"""Create a new cipher object |
|
IDEA using pycrypto for algo and pycryptoplus for ciphermode |
|
key = raw string containing the keys |
mode = python_AES.MODE_ECB/CBC/CFB/OFB/CTR/CMAC, default is ECB |
IV = IV as a raw string, default is "all zero" IV |
-> only needed for CBC mode |
counter = counter object (CryptoPlus.Util.util.Counter) |
-> only needed for CTR mode |
segment_size = amount of bits to use from the keystream in each chain part |
-> supported values: multiple of 8 between 8 and the blocksize |
of the cipher (only per byte access possible), default is 8 |
-> only needed for CFB mode |
|
EXAMPLES: |
********** |
IMPORTING: |
----------- |
>>> from CryptoPlus.Cipher import IDEA |
|
https://www.cosic.esat.kuleuven.be/nessie/testvectors/ |
----------------------------------------- |
>>> from CryptoPlus.Cipher import IDEA |
>>> key = "2BD6459F82C5B300952C49104881FF48".decode('hex') |
>>> plaintext = "F129A6601EF62A47".decode('hex') |
>>> cipher = IDEA.new(key,IDEA.MODE_ECB,) |
>>> cipher.encrypt(plaintext).encode('hex').upper() |
'EA024714AD5C4D84' |
""" |
return IDEA(key,mode,IV,counter,segment_size) |
|
class IDEA(BlockCipher): |
def __init__(self,key,mode,IV,counter,segment_size): |
cipher_module = Crypto.Cipher.IDEA.new |
self.blocksize = 8 |
BlockCipher.__init__(self,key,mode,IV,counter,cipher_module,segment_size) |
|
def _test(): |
import doctest |
doctest.testmod() |
|
if __name__ == "__main__": |
_test() |