  Two-dimensional one-way coupled map lattices are used for cryptograph where
multiple space units produce chaotic outputs in parallel. One of the outputs
plays the role of driving for synchronization of the decryption system while
the others perform the function of information encoding. With this separation
of functions the receiver can establish a self-checking and self-correction
mechanism, and enjoys the advantages of both synchronous and self-synchronizing
schemes. A comparison between the present system with the system of Advanced
Encryption Standard, AES, is presented in the aspect of channel noise
influence. Numerical investigations show that our system is much stronger than
AES against channel noise perturbations, and thus can be better used for secure
communications with large noise channel exists in open channels, e.g.,
mobile-phone secure communications.
