DocumentCode :
2627599
Title :
Study on Chaotic Cryptosystem for Digital Image Encryption
Author :
Li, Jia ; Gan, Li
Author_Institution :
Dept. of Comput. Sci. & Technol., Tangshan Coll., Tangshan, China
Volume :
3
fYear :
2011
fDate :
6-7 Jan. 2011
Firstpage :
426
Lastpage :
430
Abstract :
Nowadays many image cryptosystems have been shown to be insecure. In this paper we present a new cryptosystem based on the chaotic time delay feedback Chua circuit. It consists of two steps: the first step assures the transmitter/receiver synchronization while the second step focuses on the encryption/decryption procedure. The synchronization is performed through a nonlinear state observer design, driven by the transmitted signal, and the encryption/decryption procedure is ensured by using the chaotic masking method. A secure analysis proves that this cryptosystem is robust to some best-known attacks. This efficiency relies to the properties of the chosen chaotic generator and the efficiency of the nonlinear observer.
Keywords :
chaos; cryptography; delays; feedback; image coding; observers; chaotic cryptosystem; chaotic masking method; chaotic time delay feedback Chua circuit; digital image encryption; encryption-decryption procedure; nonlinear state observer design; transmitter-receiver synchronization; Chaotic communication; Delay effects; Encryption; Observers; Synchronization; Chaos; Cryptosystem; Decryption; Encryption; Security Property;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Measuring Technology and Mechatronics Automation (ICMTMA), 2011 Third International Conference on
Conference_Location :
Shangshai
Print_ISBN :
978-1-4244-9010-3
Type :
conf
DOI :
10.1109/ICMTMA.2011.678
Filename :
5721515
Link To Document :
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