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I'm researching RC4 and I am trying to recreate a condition where RC4 is crackable. However I can't quite find the article/resource I need to find the weakness for an implementation like this (python):
from Crypto.Cipher import ARC4 f = open('key.txt') key = f.readline().strip() o = open('output.txt','w') f = open('input.txt') for line in f: cipher = ARC4.new(key) print >>o, cipher.encrypt(line).encode('hex')
I know the weakness is that the same key is used to encrypt the traffic, however I need a hint as to how this might impact the security of the algorithm.