A Novel Chaotic Encryption Technique for Secure Communication

Abstract In this work, a novel chaotic encryption technique is proposed to realize a secure communication system. In the proposed method, the message signal to be transmitted is first encrypted using a chaotic keystream and then modulated with a chaotic signal. At the receiver end, the received chaotic signal is used for synchronization and to recover the encrypted signal. After applying the same keystream used in transmitter side, the message signal could be decrypted back. The main contribution of this work is generation of the keystream which is not part of the transmitter chaotic oscillator but is produced using an oscillator of a different structure.

[1]  Kevin M. Short,et al.  Reconstructing the keystream from a chaotic encryption scheme , 2001 .

[2]  Henk Nijmeijer,et al.  An observer looks at synchronization , 1997 .

[3]  Tao Yang,et al.  Application of neural networks to unmasking chaotic secure communication , 1998 .

[4]  Tao Yang,et al.  A SURVEY OF CHAOTIC SECURE COMMUNICATION SYSTEMS , 2004 .

[5]  Kia Fallahi,et al.  An application of Chen system for secure chaotic communication based on extended Kalman filter and multi-shift cipher algorithm , 2008 .

[6]  Kevin M. Short,et al.  UNMASKING A MODULATED CHAOTIC COMMUNICATIONS SCHEME , 1996 .

[7]  Henk Nijmeijer,et al.  Synchronization through Filtering , 2000, Int. J. Bifurc. Chaos.

[8]  Wei Huang,et al.  Unmasking Chaotic mask by a Wavelet Multiscale Decomposition Algorithm , 2001, Int. J. Bifurc. Chaos.

[9]  Cuomo,et al.  Circuit implementation of synchronized chaos with applications to communications. , 1993, Physical review letters.

[10]  Leon O. Chua,et al.  Cryptography based on chaotic systems , 1997 .

[11]  Kevin M. Short,et al.  Steps Toward Unmasking Secure Communications , 1994 .

[12]  Pérez,et al.  Extracting messages masked by chaos. , 1995, Physical review letters.

[13]  Murat Akgül,et al.  Observer Based Chaotic Message Transmission , 2003, Int. J. Bifurc. Chaos.

[14]  Gonzalo Álvarez,et al.  Some Basic Cryptographic Requirements for Chaos-Based Cryptosystems , 2003, Int. J. Bifurc. Chaos.

[15]  Gonzalo Álvarez,et al.  Breaking two secure communication systems based on chaotic masking , 2004, IEEE Transactions on Circuits and Systems II: Express Briefs.

[16]  Achour Ouslimani,et al.  Feasibility of Analog Realization of a Sliding-Mode Observer: Application to Data Transmission , 2008, IEEE Transactions on Circuits and Systems I: Regular Papers.