Simulation and Implementation of a Self-Synchronous Stream Cipher to Provide the National E-networks Security

The major objectives of Passive defense in IT, are to ensure sustainability and no unauthorized access to the national secret information and also immunization activities to ensure the stability and consistency in the E-networks of national management and control. One of the important concepts to obtain these objectives is cryptography science. Since the stream ciphers have many capability in on- line and high throughput data channel applications, many researches should be done to design and implementation in this environment. In this paper we study simulation and implementation of a word-based chaotic self- synchronous stream cipher called CPS3 on a 8- bit microprocessor)ATMEGA128(and compare it with some of the eSTREAM’s finalists. we conclude that CPS3 is as well designed as the recent stream ciphers by performance and security.