Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/38115
標題: IMAGE SHARING WITH STEGANOGRAPHY AND CHEATER IDENTIFICATION
作者: Tsai, M.H.
王宗銘 
Lin, Y.B.
Wang, C.M.
蔡孟勳
關鍵字: Steganography;(t,n) threshold secret sharing;secret image;data encryption;shadow images;quantization;scheme
Project: International Journal of Innovative Computing Information and Control
期刊/報告no:: International Journal of Innovative Computing Information and Control, Volume 6, Issue 3A, Page(s) 1165-1178.
摘要: 
In 2004, Lin and Tsai applied the concept of a threshold secret sharing scheme and the method of parity check to design a secret image sharing and authentication mechanisms. However, cheaters can easily counterfeit a fake stego-image in Lin and Tsai's scheme. In order to overcome this problem, Yang et al. proposed an improved scheme to prevent the users from making a fake stego-image. While Yang et als scheme embeds just one pixel of secret image into each block, it doesnt meet the property of high-capacity. Furthermore, the modular number in their scheme is 28 rather than a prime number. Thus, the secret image cannot be successfully reconstructed from t stego-images in their scheme. In this paper, we will propose an improved scheme which can not only embed t pixels of secret image into each block but also the reconstructed secret image can be established. Moreover, we apply the Data Signature Algorithm (DSA) for cheater identification.
URI: http://hdl.handle.net/11455/38115
ISSN: 1349-4198
Appears in Collections:資訊科學與工程學系所

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