Welcome to the resource topic for 2009/458
Title:
Security Analysis and Design of Proxy Signature Schemes over Braid Groups
Authors: Wei Yun, Xiong Guo-hua, Zhang Xing-kai, Bao Wan-su
Abstract:The braid groups have attracted much attention as a new platform of constructing cryptosystems. This paper firstly analyzes the security vulnerabilities of existing proxy signature schemes over braid groups and presents feasible attacks. Then a new proxy signature scheme is proposed based on the difficulty of the conjugacy search problem and the multiple conjugacy search problem. Security analysis shows that the proposed scheme satisfies the security requirements of proxy signature.
ePrint: https://eprint.iacr.org/2009/458
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