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Êǵġ£ÀýÈ磺 Accession number: 20105113498778 Title: Multisignature scheme based on discrete logarithms in the plain public key model Authors: Shao, Zuhua1 Author affiliation: 1 Zhejiang University of Science and Technology, China Corresponding author: Shao, Z. (zhshao_98@yahoo.com) Source title: Informatica (Ljubljana) Abbreviated source title: Inf Volume: 34 Issue: 4 Issue date: 2010 Publication year: 2010 Pages: 509-515 Language: English ISSN: 03505596 CODEN: INFOFF Document type: Journal article (JA) Publisher: Slovene Society Informatika, Jamova 39, Ljubljana, 61000, Slovenia Abstract: In this paper, we propose a new multisignature scheme based on discrete logarithms. We show that this new scheme can resist existential forgeries against adaptive chosen-message attacks in the random oracle model. The main contribution is that our security model gets rid of the special security requirement on the generation of the signers' public keys. Adversaries are not required to reveal private keys corresponding to the public keys of its choice to the challenger in attack games. Thus the new multisignature scheme does not suffer from the problem identified by Micali et al., which is shared by many current multisignature schemes. Moreover, if the joint public key of a group o f signers in this multisignature scheme is precomputed, the proposed multisignature scheme is optimal. Number of references: 22 Main heading: Electronic document identification systems Controlled terms: Algebra - Cryptography Uncontrolled terms: Discrete logarithms - Group oriented cryptography - Message attack - Multi-signature - Multisignature scheme - Private key - Public keys - Public-key model - Random Oracle model - Security model - Security requirements Classification code: 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 921.1 Algebra Database: Compendex Compilation and indexing terms, © 2011 Elsevier Inc. |
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