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Improvement of an Identity-Based Multisignature Scheme

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1 Author(s)
Jun Lv ; Sch. of Electr. & Electron. Eng., North China Electr. Power Univ., Beijing, China

In this paper the security of a multisignature scheme proposed by Harari was analyzed, and an attack method was constructed. An Attacker can successfully steal the signing key of a random signer through such method, and then forge a valid multisignature. The improvement of the original scheme was then proposed. It can be proved that the improved scheme can resist that kind of attack efficiently; the signature efficiency is also promoted at the same time.

Published in:

Computational and Information Sciences (ICCIS), 2012 Fourth International Conference on

Date of Conference:

17-19 Aug. 2012