Pairing-free certificateless signature with revocation. (2nd May 2019)

• Record Type: Journal Article
• Authors: Sun, Yinxia; Shen, Limin
• Is Part Of: International journal of computational science and engineering. Volume 19:Number 1(2019)
• Page Start: 46
• Page End: 52
• Publication Date: 2019-05-02
• Subjects: revocation -- certificateless signature -- without pairing -- DL problem; Computer science -- Mathematics -- Periodicals; Computer simulation -- Mathematical aspects -- Periodicals; Computational intelligence -- Periodicals; 004.015105
• Languages: English
• ISSNs: 1742-7185

Abstract

How to revoke a user is an important problem in public key cryptosystems. Free of key escrow and costly certificate management, the certificateless public key cryptosystem (CLPKC) is advantageous over both the identity-based public key system and the traditional public key system . However, there are few solutions to the revocation problem in CLPKC. In this paper, we present an efficient revocable certificateless signature scheme. This new scheme can revoke a user with high efficiency. We also give a method to improve the scheme to be signing-key-exposure-resilient. Based on the discrete logarithm problem, our scheme is provably secure.