An Image Encryption Algorithm Based on Discrete Wavelet Transform and Two Dimension Cat Mapping

Author

Pang, Chun-Jiang

Author_Institution

Coll. of Comput. Sci. & Technic, North China Electr. Power Univ., Baoding

Volume

2

fYear

2009

fDate

25-26 April 2009

Firstpage

711

Lastpage

714

Abstract

This article introduced a kind of method to produce two value sequences by separating the two-dimensional cat mapping sequence, according to the distribution of this two value sequence, establish exclusive corresponding relationships between the two-dimensional cat mapping chaos sequence and the discrete wavelet transformation coefficient matrix. The value of the discrete wavelet transformation coefficient matrix was encrypted and the scrambled by adjusting chaos sequence. The test result indicated that this algorithm can overcome the flaw of lower-dimensional chaos dynamics system easy to attack, and has the characteristics of highly secrecy, simple key, precise uniformity between restructuring image and original image. Meanwhile it can withstand the noise effect from the transmission process.

Keywords

cryptography; discrete wavelet transforms; image coding; image reconstruction; image sequences; matrix algebra; coefficient matrix; discrete wavelet transform; image encryption algorithm; image restructuring; two value sequences; two-dimensional cat mapping chaos sequence; Binary sequences; Chaos; Chaotic communication; Computer networks; Computer security; Cryptography; Discrete wavelet transforms; Frequency domain analysis; Space technology; Wireless communication; -two-dimensional cat mapping; chaos sequence; coefficient matrix; two value sequences; wavelet transform;

fLanguage

English

Publisher

ieee

Conference_Titel

Networks Security, Wireless Communications and Trusted Computing, 2009. NSWCTC '09. International Conference on

Conference_Location

Wuhan, Hubei

Print_ISBN

978-1-4244-4223-2

Type

conf

DOI

10.1109/NSWCTC.2009.191

Filename

4908568