Open AccessAn Identity‐Based Proxy Signature on NTRU Lattice
Author(s) -
Zhu Hongfei,
Tan Yu'an,
Yu Xiao,
Xue Yuan,
Zhang Qikun,
Zhu Liehuang,
Li Yuanzhang
Publication year - 2018
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2017.09.008
Subject(s) - ntru , proxy (statistics) , signature (topology) , computer science , mathematics , computer security , statistics , public key cryptography , geometry , encryption
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.