Forgery attacks on the ID-based multisignature scheme without reblocking and predetermined signing order

Authors:
Kyung-Ah Shim
Affiliations:
Department of Mathematics, Ewha Womans University, 11-1 Daehyun-dong, Seodaemun-gu, Seoul, 120-750, South Korea
Venue:
Computer Standards & Interfaces
Year:
2008

Citing 2
Cited 1

A method for obtaining digital signatures and public-key cryptosystems

Communications of the ACM
An ID-based multisignature scheme without reblocking and predetermined signing order

Computer Standards & Interfaces

Certificateless strong designated verifier multisignature scheme using bilinear pairings

Proceedings of the International Conference on Advances in Computing, Communications and Informatics

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Abstract

Recently, Chang et al. proposed an ID-based multisignature scheme based on RSA without reblocking and predetermined signing order. The scheme simplifies the public key certification process and overcomes the moduli clashes problem. In this paper, we show that the scheme is insecure against several forgery attacks.