Security Analysis of Double Length Compression Function Based on Block Cipher Abstract (2008)
Pin Lin, Wen-ling Wu, Chuan-kun Wu
Recently Nandi etc. have proposed a 1/3-rate and a 2/3-rate double length compression functions and studied their security in the black-box model. They proved that to find a collision for the...
Public Key Cryptosystems Based on Boolean Permutations and Their Applications (2007)
Chuan-kun Wu, Vijay Varadharajan
Abstract. In this paper we propose the use of Boolean permutations to design public key cryptosystems. The security of the cryptosystems is based on the difficulty of inverting Boolean permutations....
On construction of resilient functions (2007)
Abstract. An (n, m, t) resilient function is a function f: f0,1g n
Abstract. This paper presents a construction of 2 \Gamma (2 n \Gamma 1; n; ) designs and gives the polynomial description of this class of designs. The construction applies to the cases of all...
Abstract. The nonlinearity of a Boolean function, which is defined as its distance from the set of affine functions, is an important measuring index in cryptographic applications. The distribution of...
Electronic Supermarket for Mobile Agents (2007)
Abstract. The development of World Wide Web and Internet browsers enables electronic commerce to come true. However due to tremendous increase of new sites connected to the Internet and enormously...
Abstract. It is shown in this paper that every correlation immune Boolean function of n variables can be written as f(x) = g(xG T); where g is an algebraic non-degenerate Boolean function of k (k n)...
Abstract. Relationships between the orthogonal direct sum decomposition of a vector space over a finite field and the existence of the generalized inverses of a linear transformation over the finite...
Generalized inverses in public key cryptosystem design (2007)
Abstract. We point out, in this paper, that the theory of generalized inverses of matrices over finite fields is a potential tool in cryptographic research, by proposing a public key cryptosystem. We...
Abstract. It is shown in this paper that every correlation immune Boolean function of n variables can be written as f(x) = g(xG T); where g is an algebraic non-degenerate Boolean function of k (k n)...
Internet Voting: Concerns and Solutions (2007)
Chuan-kun Wu, Ramesh Sankaranarayana
Internet voting systems, catering to different requirements, have been widely implemented and used. Some have been successful, while others have experienced unexpected problems. This paper will...
Fair Exchange of Digital Signatures with Off-line Trusted Third Party (2007)
Chuan-kun Wu, Vijay Varadharajan
In this paper we show how fair exchange of digital signatures can be made possible without a separate verifiable encryption. This means that the fair exchange protocol can be established based on an...
Efficient Key Agreement for Large and Dynamic Multicast Groups Abstract (2005)
Secure multicast represents the core component of many web and multimedia applications such as pay-TV, teleconferencing, real-time distribution of stock market price and etc. The main challenges for...
Many-to-one Cryptographic Algorithms and Group Signatures (Extended Abstract (1999)
Chuan-kun Wu, Vijay Varadharajan
Abstract. This paper investigates the properties and cryptographic applications of Boolean permutations. Given the difficulty of solving nonlinear equations in general, this paper proposes the design...
Modified Chinese Remainder Theorem and its application to proxy signatures (1999)
Chuan-kun Wu, Vijay Varadharajan
Chinese Remainder Theorem has been used for hundreds of years and has been applied to many domains such as integers and polynomials. An assumption made is that the component moduli are pairwise...
On the Linear Structure of Symmetric Boolean Functions (1997)
Abstract. It is shown in this paper that nonlinear symmetric Boolean functions have no other linear structures other than the all-zero and the all-one vectors. For such functions with n variables, it...