def encrypt_factory(cypher = None,Seed = None):
""" creates an encryptor and a decryptor function from a cypher, or a seed, or randomly
"""
if not cypher:
cypher = make_cypher(Seed)
trans = mt(alphabet,cypher)
untrans = mt(cypher,alphabet)
def encryptor(message):
return message.lower().translate(trans)
def decryptor(message):
return message.lower().translate(untrans)
return encryptor, decryptor
# -*- coding: utf-8 -*-
from string import maketrans as mt
translation = mt('GCTA', 'CGAU')
def to_rna(DNAstrand):
return DNAstrand.translate(translation)
def encryptor(key, message):
key %= 26
return message.translate(mt(lc+uc, lc[key:]+lc[:key]+uc[key:]+uc[:key]))
# print D(" ".join(cypherbet)) # uncomment to cheat
answer = None
try:
while not answer:
answer = raw_input(" ".join(cypherbet)+"\n")
if not answer:
print "Please enter some text or ^C to exit"
else:
decypher = "".join([ch for ch in answer if ch.isalpha()])
if len(decypher) != len(cypherbet):
print "\nPlease enter the correct number of characters."
answer = ""
except KeyboardInterrupt:
print "Thanks for trying!"
exit()
# test answer
decypher_table = mt(cypherbet,decypher)
print 80*"="
try:
assert cyphertext.translate(decypher_table) == long_message.lower()
except:
print "\n\nSorry. It should have been:\n%s\n%s" % (" ".join(cypherbet)," ".join(D(cypherbet)))
else:
print "\n\nYes!\n"
def decode(cls, s):
self = cls
mtt = mt(self.__enc, self.__alpha)
return s.translate(mtt)
def encode(cls, s):
self = cls
tmp = s.lower().translate(None, pct + wht + dig)
mtt = mt(self.__alpha, self.__enc)
return tmp.translate(mtt)
def encryptor(key, message):
key %= 26
return message.translate(
mt(lc + uc, lc[key:] + lc[:key] + uc[key:] + uc[:key]))