Attack on Han et al.'s ID-based confirmer (undeniable) signature at ACM-EC'03

作者：Zhang, FG^*; Safavi Naini, R; Susilo, W

来源：Applied Mathematics and Computation, 2005, 170(2): 1166-1169.

DOI：10.1016/j.amc.2005.01.015

• confirmer signature
• undeniable signature
• attack
• bilinear pairings
• ID-based cryptography

In ACM conference on electronic commerce (EC'03), Han et al. [Identity-based confirmer signatures from pairings over elliptic curves, in: Proceedings of ACM Conference on Electronic Commerce Citation 2003, San Diego, CA, USA, June 09-12, 2003, pp. 262-263] proposed an ID-based confirmer signature scheme using pairings (the scheme is in fact an ID-based undeniable signature scheme). In this paper, we show that this signature scheme is not secure and the signer can deny any signature, even if it is a valid signature, and any one can forge a valid confirmer signature of a signer with identity I D on an arbitrary message and confirm this signature to the verifier.

• 出版日期2005-11-15
• 单位中山大学