An Identity-Based Proxy Signature on NTRU Lattice  

作　　者：ZHU Hongfei TAN Yu'an YU Xiao XUE Yuan ZHANG Qikun ZHU Liehuang LI Yuanzhang 

机构地区：[1]The School of Computer Science and Technology, Beijing Institute Of Technology, Beijing 100081, China [2]Institute of Computer and Communication Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China [3]Beijing Engineering Research Center of Massive Language Information Processing and Cloud Computing Application, Beijing 100081, China

出　　处：《Chinese Journal of Electronics》2018年第2期297-303,共7页电子学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.U1636213,No.61370063);Beijing Municipal Natural Science Foundation(No.4172053);Natural Science Foundation of Henan(No.162300410322)

摘　　要：Proxy signature plays an important role in distributed systems, mobile agent applications, distributed shared object systems, global distribution networks and mobile communications etc., since it allows the original signer to delegate another proxy signer to sign the message instead of himself. However, the proxy signature schemes constructed on the number theory cannot resist quantum computers attack and depend on the public key infrastructure. To mitigate these problems, the alternative schemes are Identity-based proxy signature constructed on lattice.In this paper, an identity-based proxy signature scheme based on Number theorem research unit(NTRU) lattice is proposed and proven secure in the random oracle. Compared with the other existing identity-based proxy signature schemes, the proposed scheme outperforms them in terms of original signer's signature size and signing key size and proxy signer's signing key size.Proxy signature plays an important role in distributed systems, mobile agent applications, distributed shared object systems, global distribution networks and mobile communications etc., since it allows the original signer to delegate another proxy signer to sign the message instead of himself. However, the proxy signature schemes constructed on the number theory cannot resist quantum computers attack and depend on the public key infrastructure. To mitigate these problems, the alternative schemes are Identity-based proxy signature constructed on lattice.In this paper, an identity-based proxy signature scheme based on Number theorem research unit（NTRU） lattice is proposed and proven secure in the random oracle. Compared with the other existing identity-based proxy signature schemes, the proposed scheme outperforms them in terms of original signer＇s signature size and signing key size and proxy signer＇s signing key size.

关 键 词：Identity based proxy signature Quantum computers attack NTRU lattice UNFORGEABILITY 

分 类 号：TN918.91[电子电信—通信与信息系统]