Efficient Controlled Signature for a Large Network with
Multi Security-level Setting

Pairat Thorncharoensri⁺, Willy Susilo, and Joonsang Baek

University of Wollongong, Wollongong, Australia

{pairat, wsusilo, baek}@uow.edu.au

Abstract

We present an efficient multi-level controlled signature. This primitive allows a signer to specify a security level to limit the accessibility of the signature and the message. The primitive works as follows. Let the security levels of a group of users defined in the ascending order, where “1” stands for the lowest security level and “10” represents the highest protection level, respectively. A signer signs on a message by setting a security layer “3”, which it is indicated that all users who were authorized with a level of security greater than “3” can verify this signature while cannot verify it. Many existing primitives, such as designated verifier signature, hierarchical identity-based signatures, policy-based signature, and attribute-based signature, are shared similarities with this primitive. However, our construction for this primitive is unique, concise and efficient compared to those existing primitives.

Keywords: Attribute-based, signature, designated verifier, anonymity.

+: Corresponding author: Pairat Thorncharoensri
Institute of Cybersecurity and Cryptology, School of Computing and Information Technology
University of Wollongong, NSW 2522, Australia, Tel.+61-0242214033

Journal of Wireless Mobile Networks, Ubiquitous Computing, and Dependable Applications (JoWUA)

Vol. 10, No. 3, pp.1-20, September 2019 [pdf]

Received: August 1, 2019; Accepted: September 2, 2019; Published: September 30, 2019

DOI: 10.22667/JOWUA.2019.09.30.001