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Proactive Weighted Threshold Signature Based on Generalized chinese Remainder Theorem

维普期刊数据库评论

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Journal of Electronic Science and Technology 2012年第3期10卷 250-255页

作者： cheng Guo chin-chen chang Department of Computer Science National Tsing Hua University Hsinchu 30013 Department of Information Engineering andComputer Science Feng Chia University Taichtmg 40724. Department of Computer Science andInformation Engineering Asia University Taichung 41354

This paper proposes a new proactive weighted threshold signature scheme based on Iflene＇s general secret sharing, the generalized chinese remainder theorem, and the RSA threshold signature, which is itself based on the chinese reminder theorem. In our scheme, group members are divided into different subgroups, and a positive weight is associated to each subgroup, where all members of the same subgroup have the same weight. The group signature can be generated if and only if the sum of the weights of members involved is greater than or equal to a fixed threshold value. Meanwhile, the private key of the group members and the public key of the group can be updated periodically by performing a simple operation aimed at refreshing the group signature message. This periodical refreshed individual signature message can enhance the security of the proposed weighted threshold signature scheme.

关键词： Generalized chinese remaindertheorem proactive weighted threshold signature RSAcryptosystem secret sharing.

Guest Editorial Special Issue on Information Security

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Journal of Electronic Science and Technology 2011年第4期9卷 289-290页

作者： chin-chen chang Chia-chen Lin Feng Chia University Providence University

The Intemet is a popular channel for allowing more and more users to exchange information without geographical limitations and time restrictions. Therefore, a large amount of digital data, such as digital images, text, audio, and video, is transmitted over the Intemet. Unfortunately, sensitive digital data can be intercepted by malicious users of the Internet, so the development of techniques for ensuring the secrecy and security of data during transmission has become a top priority.

关键词： In Guest Editorial Special Issue on Information Security data

Guest Editorial Special Issue on Steganography and Image Authentication

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Journal of Electronic Science and Technology 2013年第1期11卷 1-2页

作者： chin-chen chang Yung-chen Chou Feng Chia University Asia University

With the advanced developments in information technology and networking, a user can easily communicate with others via the Internet. In daily life, users can make orders of products through the e-commerce market. Thus, how to protect users＇ private information from being wiretapped over the Intemet has become a very important research topic in recent years. The objective of this special issue is to present up-to-date research and development activities in the areas of information security. We hope that this special issue will interest computer scientists to get involved in this promising and active research area. After carefully reviewing of many qualified submissions, the editorial committee accepted 9 outstanding papers to be included in this special issue.

关键词： DWT data chen

Reversible Data Embedding Scheme Using Relationships between Pixel-Values and Their Neighbors

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Journal of Electronic Science and Technology 2012年第3期10卷 238-249页

作者： Chia-chen Lin chin-chen chang Yi-Hui chen Department of Computer Science and Information Management Providence University Taichuang Department of Information Engineering and Computer Science Feng Chia University Taichuang Department of Applied Informatics and Multimedia Asia University Taichung

Reversible data embedding is becoming a very important issue in securing images transmitted over the Internet, especially in dealing with sensitive images such as those created for military data and medical data. Based on the relationships between pixels and their neighbors, we propose a reversible data embedding scheme to embed hidden messages into an original image. In our proposed scheme, a two-layer data embedding approach is used for our proposed data embedding phase. Layer-1 embedding is used to hide secret data. Layer-2 embedding, which is an embedding variant of the proposed layer-1 embedding, is used to hide side information, such as the parameters required to restore the marked image. In our layer-1 embedding, the value of an embedded pixel is determined according to a predetermined threshold and the relationship between the pixel and its neighbors. In our layer-2 embedding, the similar data embedding concept is expanded to the block-based. Experimental results provide supportive data to show that the proposed scheme can provide greater hiding capacity while preserving the image quality of a marked image in comparison with previous work.

关键词： Cover image marked image,reversible data embedding watermarking.

Guest Editorial Special Issue on Network and Communication Security

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Journal of Electronic Science and Technology 2012年第3期10卷 193-194页

作者： chin-chen chang Ming-Shiang Hwang Feng Chia University Asia University

Because of the advanced developments in information technology and networking, a user can easily communicate with others via the Internet. In daily life, users can buy a lot of products through the e-commerce market. Thus, how to protect users＇ private data from being compromised on the Internet has become a very important research issue in recent years.

关键词： data Guest Editorial Special Issue on Network and Communication Security very chen over

Secret Sharing Using Visual Cryptography

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Journal of Electronic Science and Technology 2010年第4期8卷 289-299页

作者： chin-chen chang Bo Li Jung-San Lee Department of Information Engineering and Computer Science Feng Chia University Taichung 40724 Taiwan China Department of Information Security Tongii University Shanghai 201804 China

Compared with the traditional crypto- graphy, visual cryptography （VC） decrypts secret images referring to the characteristics of human vision, rather than the cryptography knowledge or complex computations. Furthermore, seeing to the freeness of the secret key, the whole process of encryption as well as deeryption for the visual cryptography meets a fast dealing course. As to the security concern, it is able to guarantee that no one can have access to any clues about the content of a secret image from individual cover images. Thus, owing to the studies on this area, the target of light-weighted cryptography is reached. Now the visual cryptography has been developed from the meaningless shadows to the meaningful ones. Seeing to the highly developed technique, some advanced VC techniques are introduced in this survey, respectively.

关键词： Light-weighted meaningful shares,meaningless shares progressive visual cryptography.

A Novel(n,n)Secret Image Sharing Scheme Based on Sudoku

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Journal of Electronic Science and Technology 2013年第1期11卷 44-50页

作者： Zhi-Hui Wang cheng Guo chin-chen chang the School of Software Dalian University of Technology the Department of Computer Science National Tsing Hua University the Department of Information Engineering and Computer Science Feng Chia University the Department of Computer Science and Information Engineering Asia University

Recently, chang et al. proposed a Sudoku-based secret image sharing scheme. They utilized the Sudoku grid to generate meaningful shadow images, and their scheme satisfied all essential requirements. Based on chang et al.＇s scheme, we propose a novel （n, n） secret image sharing scheme based on Sudoku. In the proposed scheme, a secret image can be shared among n different cover images by generating n shadow images, and the secret image can be reconstructed without distortion using only these n shadow images. Also, the proposed scheme can solve the overflow and underflow problems. The experimental results show that the visual quality of the shadow images is satisfactory. Furthermore, the proposed scheme allows for a large embedding capacity.

关键词： Secret sharing (n n) secret image sharing Sudoku steganography.

A Steganographic Scheme for Reversible Information Hiding with Good Visual Quality Suitable for Small Embedded Data

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A Steganographic Scheme for Reversible Information Hiding wi...

A Visual Secret Sharing Scheme for Progressively Restoring Secrets

2009 ISECS International Colloquium on Computing, Communication, Control, and Management

作者： chin-chen chang The Duc Kieu Department of Information Engineering and Computer Science Feng Chia University

In this paper, we propose a simple reversible data hiding method in spatial domain for digital images by exploiting the correlation characteristic of neighboring pixels in natural images. The proposed method embeds several secret bits into a block of two consecutive cover pixels whose values are equal. The experimental results show that the proposed method achieves very good visual quality at low hiding capacity in comparison with Tian’s and Ni et al.’s methods.

关键词： reversible data embedding information hiding steganography

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Journal of Electronic Science and Technology 2011年第4期9卷 325-331页

作者： chin-chen chang Yi-Pei Hsieh Chi-cheng Liao the Department of Information Engineering and Computer Science Feng Chia University. He is also with the Department of Computer Science and Information Engineering Asia University with the Department of Information Engineering and Informatics Tzu Chi College of Technology the Department of Computer Science and Information Engineering National Chung Cheng University

Visual secret sharing has received more and more attention over the past years due to the fact that neither complex computation nor cryptographic knowledge is required to decrypt the secret image directly according to the characteristics of the human vision system. Considering the issue of sharing the secret image at multiple image resolutions with the meaningful shadows, in this paper, we present a friendly progressive visual secret sharing scheme without expanding the image size in the shadows and the reconstructed secret image based on applying a 2x2-sized block-wise operation to generate the shadows block by block. The proposed method can achieve these benefits： 1） the generated shadows are meaningful, and their sizes are not expanded, and 2） the secret image can be recovered at different resolutions by stacking different quantities of shadows together. The experimental results also show that the proposed method is superior to other compared schemes.

关键词： Friendly management multiple image resolutions progressive restoring secrets visual secret sharing.