Article: Attribute-based proxy signature scheme with dynamic strong forward security Journal: International Journal of Sensor Networks (IJSNET) 2024 Vol.44 No.4 pp.214 - 225 Abstract: Attribute-based proxy signatures allow a specially designated proxy signer to generate a valid signature on behalf of the original signer. At this stage of research, attribute-based proxy signature schemes suffer from the following problems: 1) it is based on bilinear pairing operations, and its complex operation leads to an increase in computational overhead and inefficiency of the overall scheme; 2) the group signature member key is distributed by the trusted centre (KGC) with the signature key, and there is the problem of authority fraud of the trusted centre; 3) the security of the proxy signature member cannot be guaranteed by using the master key for a long time; 4) the attribute value will changes after the key is updated, and a valid signature cannot be generated after the proxy signer's key is updated. To solve the above problems, we propose an attribute-based proxy signature with constant attributes and dynamically updatable keys, which has the characteristics of low computational overhead, high efficiency, no trust centre, and guarantees the security of the user's long-term use of the master key. We show in the efficiency analysis that this scheme has more significant advantages. Inderscience Publishers - linking academia, business and industry through research

Title: Attribute-based proxy signature scheme with dynamic strong forward security

Authors: Qingshui Xue; Zixuan Lu; Tianhao Zhang

Addresses: School of Computer Science and Information Engineering, Shanghai Institute of Technology, Fengxian, Shanghai, China ' School of Computer Science and Information Engineering, Shanghai Institute of Technology, Fengxian, Shanghai, China ' School of Computer Science and Information Engineering, Shanghai Institute of Technology, Fengxian, Shanghai, China

Abstract: Attribute-based proxy signatures allow a specially designated proxy signer to generate a valid signature on behalf of the original signer. At this stage of research, attribute-based proxy signature schemes suffer from the following problems: 1) it is based on bilinear pairing operations, and its complex operation leads to an increase in computational overhead and inefficiency of the overall scheme; 2) the group signature member key is distributed by the trusted centre (KGC) with the signature key, and there is the problem of authority fraud of the trusted centre; 3) the security of the proxy signature member cannot be guaranteed by using the master key for a long time; 4) the attribute value will changes after the key is updated, and a valid signature cannot be generated after the proxy signer's key is updated. To solve the above problems, we propose an attribute-based proxy signature with constant attributes and dynamically updatable keys, which has the characteristics of low computational overhead, high efficiency, no trust centre, and guarantees the security of the user's long-term use of the master key. We show in the efficiency analysis that this scheme has more significant advantages.

Keywords: proxy signatures; attribute-based proxy signatures; strong forward security; Lagrange interpolation theorem; Shamir secret sharing.

DOI: 10.1504/IJSNET.2024.138518

International Journal of Sensor Networks, 2024 Vol.44 No.4, pp.214 - 225

Received: 16 Aug 2023
Accepted: 15 Mar 2024
Published online: 08 May 2024 *

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Title: Attribute-based proxy signature scheme with dynamic strong forward security

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