  A new self-synchronizing stream cipher (SSSC) is proposed based on one-way
and nearest neighbor coupled integer maps. Some ideas of spatiotemporal chaos
synchronization and chaotic cryptography are applied in this new SSSC system.
Several principles of constructing optimal SSSC are discussed, and the methods
realizing these principles are specified. This SSSC is compared with several
SSSC systems in security by applying chosen-ciphertext attacks. It is shown
that our new system can provide SSSC with high security and fairly fast
performance.
