1a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch# Author: Trevor Perrin 2a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch# See the LICENSE file for legal information regarding use of this file. 3a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)"""Abstract class for RC4.""" 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7a02191e04bc25c4935f804f2c080ae28663d096dBen Murdochclass RC4(object): 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) def __init__(self, keyBytes, implementation): 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if len(keyBytes) < 16 or len(keyBytes) > 256: 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) raise ValueError() 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) self.isBlockCipher = False 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) self.name = "rc4" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) self.implementation = implementation 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) def encrypt(self, plaintext): 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) raise NotImplementedError() 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) def decrypt(self, ciphertext): 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) raise NotImplementedError()