JISE


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Journal of Information Science and Engineering, Vol. 29 No. 6, pp. 1135-1150


An Efficient Smart Card Based Authentication Scheme Using Image Encryption

CHIN-CHEN CHANG1,2, HSIAO-LING WU1, ZHI-HUI WANG3,* AND QIAN MAO2,4
1Department of Information Engineering and Computer Science
Feng Chia University
Taichung, 407 Taiwan
2Department of Computer Science and Information Engineering
Asia University
Taichung, 413 Taiwan
3School of Software
Dalian University of Technology
Dalian City, 116 P.R. China
4Department of Optical-Electrical and Computer Engineering
University of Shanghai for Science and Technology
Shanghai, 200 P.R. China


    To date, there are many authentication schemes have been proposed for smart cards. However, when a smart card is stolen or the authentication token is intercepted, most of these schemes will be insecure. In 2012, Chang et al. proposed an authentication scheme for smart card to avoid the aforementioned problem. They combined the smart card and image encryption technology for authentication. However, their scheme has lower quality for the restored image. Hence, we propose two image-encryption schemes in frequency domain. In the first scheme, we scramble the positions of the DCT coefficients. In the second scheme, we scramble the positions of the DCT coefficients; meanwhile, the values of the DCT coefficients are diffused. The experimental results showed that both of our proposed schemes have higher quality of the restored images with low storage.

Keywords: image encryption, torus automorphism, diffusion, authentication, smart card

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