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A secure group signature scheme |
Wang Xiaoming①②; Fu Fangwei② |
①School of Mathematics Science Nankai University Tianjin 300071 China;②College of Automatization Qingdao University Qingdao 266071 China |
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Abstract A new forgery attack is proposed to Tseng-Jan s group signature scheme(1999), anyone can produce a valid group signature with this forgery attack. In this paper, a new modified and secure group signature scheme is presented in point of the forgery attacks proposed by this paper and Z.C. Li, et al.(2000). The new scheme can not only resist all kinds of forgery attacks, but also preserve the main merits in Tseng-Jan s scheme. Furthermore, the new scheme can revoke group member according to need.
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Received: 22 July 2001
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