Chaotic Map And Image Based Cryptosystem

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ISSN: 2349-6002 ESTD Year: 2014

UGC approved journal no 47859

Chaotic Map And Image Based Cryptosystem
Author(s):
K.Meena, Dr.G.A.Sathish Kumar
Keywords:
Logistic Map, Tent Map, Quadratic Map, Chaos, diffusion process and Stream Cipher
Abstract
In this paper, an image encryption scheme based on colour byte scrambling technique is proposed by using Logistic map and Tent map. The proposed scheme is using Logistic map for generating permutation sequence to shuffle the colour bytes (confusion) and Tent map is used for generating masking sequence to change the value of the colour bytes (diffusion) of the 24-bit colour image. The traditional scrambling techniques confusion and diffusion are applied continuously on the test image which leads to producing the cipher image which has good confusion and diffusion properties. Since we are applying Logistic map and Tent map for image encryption, it is very difficult for the cryptanalyst to break the proposed image encryption algorithm. The performance and security of the proposed method are evaluated thoroughly using key space analysis, statistical analysis, sensitivity analysis and so on. Results are encouraging and suggest that the scheme is reliable to be adopted for the secure image communication application.
Article Details
Unique Paper ID: 149935 Publication Volume & Issue: Volume 7, Issue 2 Page(s): 51 - 57
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