Abstract
For a digital signature scheme, loss of private keys will cause a devastating effect on e-commerce and Internet-based transaction applications in the present network environment. Key-insulated public-key system is introduced to reduce damage caused by private key exposure. Over the last few years, identity (ID)-based key-insulated cryptography using bilinear pairings has received much attention from cryptographic researchers. In this paper, we propose a new and efficient ID-based key-insulated signature scheme with batch verifications. As compared with the recently proposed ID-based key-insulated signature schemes, our scheme has the best performance for batch verifications. For security analysis, we demonstrate that the proposed scheme is a provably secure ID-based key-insulated signature in the random oracle model and under the computational Diffie-Hellman assumptionn. Meanwhile, to demonstrate the additional advantage of our ID-based key-insulated signature scheme, we present a novel application based on the proposed scheme, called ID-based proxy signature scheme with full delegation and time restriction. This new type of proxy signature scheme provides flexible management for the delegated proxy signers.
Original language | English |
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Pages (from-to) | 4797-4810 |
Number of pages | 14 |
Journal | International Journal of Innovative Computing, Information and Control |
Volume | 8 |
Issue number | 7 A |
Publication status | Published - 2012 Jul 1 |
All Science Journal Classification (ASJC) codes
- Software
- Theoretical Computer Science
- Information Systems
- Computational Theory and Mathematics