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ABSTRACT: Security of wireless sensor network (WSN) is a considerable challenge, because of limitation in energy, communication bandwidth and storage. ID-based cryptosystem without checking and storing certificate is a suitable way used in WSN. But key escrow is an inherent disadvantage for traditional ID-based cryptosystem, i.e., the dishonest key generation center (KGC) can forge the signature of any node and on the other hand the node can deny the signature actually signed by him/herself. To solving this problem, we propose an ID-based ring signature scheme without trusted KGC. We also present the accurate secure proof to prove that our scheme is secure against existential forgery on adaptively chosen message and ID attacks assuming the complexity of computational Diffie-Hellman (CDH) problem. Compared with other ring signature schemes, we think proposed scheme is more efficient.Journal of Shanghai Jiaotong University (Science) 04/2009; 14(2):189-194.
Shanghai Jiao Tong University
Shanghai, Shanghai Shi, China
- Department of Electronic Engineering