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A MULTICAST KEY MANAGEMENT SCHEME BASED ON CHARACTERISTIC VALUES OF MEMBERS

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Journal of electronics(china) 2012年第Z2期 294-301页

作者： Du Xiaoqiang* ** bao wansu* fu xiangqun* *(institute of electronic technology, pla information engineering university, zhengzhou 450004, china) **(Unit 95019 of the pla, Xiangyang 441800, china)

A new collusion attack on Pour-like schemes is proposed in this paper. Then, we present a collusion-free centralized multicast key management scheme based on characteristic values of members. The re-keying method that other group members calculate new keys when a member is joining or leaving is also designed. It achieves forward secrecy and backward secrecy. Compared with typical existing centralized schemes, the storage of Group Key Controller (GKC) in our scheme halves the storage overhead of others, and communication overhead of GKC is 2 in case of joining re-keying. Especially, the leaving re-keying overhead is and the overall performance is excellent.

关键词： Security multicast Key management Characteristic values Collusion Re-keying

Speeding up implementation for Shor's factorization quantum algorithm

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Chinese Science Bulletin 2010年第32期55卷 3648-3653页

作者： fu xiangqun bao wansu zhou chun institute of electronic technology the PLA Information Engineering University Zhengzhou 450004 China

In this paper, based on the implementation of semiclassical quantum Fourier transform, we first propose the concept of generation vector of ternary binary representation, construct the generation function's truth table, prove that the generation vector of ternary binary representation is one kind of k 's NAF representation and further find that its number of nonzero is not more than [(「logk」+1) /2]. Then we redesign a quantum circuit for Shor's algorithm, whose computation resource is approximately equal to that of Parker (Their requirements of elementary quantum gate are both O (「logN」3), and our circuit requires 2 qubits more than Parker's). However, our circuit is twice as fast as Parker's.

关键词：量子算法因子分解标准二进制表示注册 Vector 量子电路傅立叶变换生成函数

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t-bit semiclassical quantum Fourier transform

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Chinese Science Bulletin 2012年第26期57卷 119-124页

作者： fu xiangqun bao wansu zhou chun SONG Zhen institute of electronic technology The PLA Information Engineering UniversityZhengzhou 450004China

Because of the difficulty of building a high-dimensional quantum register,this paper presents an implementation of the high-dimensional quantum Fourier transform(QFT)based on a low-dimensional quantum ***,we define the t-bit semi- classical quantum Fourier *** terms of probability amplitude,we prove that the transform can realize quantum Fourier transformation,illustrate that the requirement for the two-qubit gate reduces obviously,and further design a quantum circuit of the *** the classical fixed-window method and the implementation of Shor's quantum factorization algorithm,we then redesign a circuit for Shor's algorithm,whose required computation resource is approximately equal to that of Parker'*** requirement for elementary quantum gates for Parker's algorithm is 3 O (logN),and the quantum register for our circuit re- quires t-1 more dimensions than Parker'***,our circuit is t2 times as fast as Parker's,where t is the width of the window.

关键词：量子寄存器傅里叶变换量子电路分解算法量子比特执行情况计算资源 QFT

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A MULTICAST KEY MANAGEMENT SCHEME BASED ON CHARACTERISTIC VALUES OF MEMBERS

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Journal of electronics(china) 2012年第3期29卷 294-301页

作者： Du Xiaoqiang bao wansu fu xiangqun institute of electronic technology PLA Information Engineering University Zhengzhou 450004 China Unit 95019 of the pla Xiangyang 441800 China

关键词： Security multicast Key management Characteristic values Collusion Re-keying