Block Sampling Algorithm of Image Encryption Based on Chaotic Scrambling

Author

Hong, Ren ; Jian, Zhang ; Xing-jian, Wang ; Zhen-wei, Shang

Author_Institution

Northeast Forestry Univ., Harbin

fYear

2007

fDate

15-19 Dec. 2007

Firstpage

773

Lastpage

776

Abstract

Base on the randomicity and initial value sensitivity of Lu chaotic sequence, dividing the original image into blocks, carrying out the gray scrambling and location scrambling on each team of the pixel points, making their location and grey distribute evenly at the same time, it can accomplish the encryption of a image. Using Matlab to simulate, the result indicates that this algorithm has great secret key´s space, and it also has the ability of resisting statistic attack and damage. For 256 times 256 BMP image which data size is 192 k, encryption cost approximately 0.152 s and decryption cost approximately 0.161 s.

Keywords

chaos; cryptography; image coding; statistical analysis; Lu chaotic sequence; Matlab; block sampling algorithm; chaotic scrambling; decryption; gray scrambling; image encryption; initial value sensitivity; location scrambling; statistic attack; Chaos; Chaotic communication; Costs; Cryptography; Distributed computing; Educational institutions; Forestry; Image sampling; Information security; Pixel;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Intelligence and Security Workshops, 2007. CISW 2007. International Conference on

Conference_Location

Harbin

Print_ISBN

978-0-7695-3073-4

Type

conf

DOI

10.1109/CISW.2007.4425609

Filename

4425609