It's a Stream Cipher, which is an approximation [1] of a One Time Pad, which allows the key to be much shorter than the plaintext. The hardest part is how to g

It's a Stream Cipher, which is an approximation [1] of a One Time Pad, which allows the key to be much shorter than the plaintext. The hardest part is how to generate the pad from the key. [1] http://en.wikipedia.org/wiki/Stream_cipher#Loose_inspiration_from_the_one-time_pad http://en.wikipedia.org/wiki/Stream_cipher#Loose_inspiration...