Kolmogorov Stream Ciphers

Stream ciphers are essential tools for encrypting sensitive data. While having the limitation that a single key may never be used twice! they are often very fast, and can offer a valuable alternative to block ciphers, hi many applications. In this contribution we describe a, novel stream cipher based on discrete Kolmogorov systems. Based on a theorem stating that discrete Kolmogorov systems can provide a perfect permutation Operator we develop a strong generator for pseudo-random bits or bytes. These bits or bytes are then added to the plain text stream to produce the desired ciphertext stream in a straightforward manner.