Chaotic Generator in Digital Secure Communication
نویسنده
چکیده
A chaotic orbit generated by a nonlinear system is irregular, aperiodic, unpredictable and has sensitive dependence on initial conditions. However, the chaotic trajectory is still not well enough to be a crypto system in digital secure communication. Therefore, we propose a Modified Logistic Map (MLM) and give a theoretical proof to show that the MLM is a chaotic map according to Devaney’s definition. Based on the MLMs, we establish a Modified Logistic Hyper-Chaotic System (MLHCS) and apply MLHCS to develop a symmetric cryptography algorithm, Asymptotic Synchronization of Modified Logistic Hyper-Chaotic System (ASMLHCS).
منابع مشابه
Pseudo Chaotic Sequence Generator based DS-SS Communication System using FPGA
Spread spectrum (SS) technology is a data transfer technique designed to overcome the interference problems associated with narrow-band very high frequency and ultra high frequency Data transfer systems. Spread spectrum communication is used to reduce jamming of communication signal and provides a highly secure communication. In this paper we specifies the Field Programmable Gate Array (FPGA) i...
متن کاملA Secure Chaos-Based Communication Scheme in Multipath Fading Channels Using Particle Filtering
In recent years chaotic secure communication and chaos synchronization have received ever increasing attention. Unfortunately, despite the advantages of chaotic systems, Such as, noise-like correlation, easy hardware implementation, multitude of chaotic modes, flexible control of their dynamics, chaotic self-synchronization phenomena and potential communication confidence due to the very dynami...
متن کاملTransmission of Digital Chaotic and Information- Bearing Signals in Optical Communication Systems
A new proposal to have secure communications in a system is reported. The basis is the use of a synchronized digital chaotic systems, sending the information signal added to an initial chaos. The received signal is analyzed by another chaos generator located at the receiver and, by a logic boolean function of the chaotic and the received signals, the original information is recovered. One of th...
متن کاملHARDWARE IMPLEMENTATION OF A TENT MAP-BASED CHAOTIC GENERATOR Cristian-Iulian RÎNCU Vasile-Gabriel IANA
In the last ten years the interest for chaos has increased due to the great resources represented by the dynamical chaotic systems which can be used to assure secure and wide band communications. Also, chaotic systems are widely used to design analog and digital blocks for communication systems. In this paper we present some aspects regarding the hardware implementation of one well-known digita...
متن کاملDs-cdma Communication Systems
The potentialities of chaos to secure transmitted messages in digital communications has been proved. This by use Direct Sequence Code Division Multiple Access (DSCDMA) system using chaotic spreading sequences. Two synchronization methods for Chua’s digital chaotic generator, are presented: the master-slave synchronization and the impulsive synchronization. In the first method, the driving sign...
متن کامل