On the Improvement of the Security of Signcryption Scheme

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题名:	On the Improvement of the Security of Signcryption Scheme
作者:	Fuw-Yi Yang;Jinn-Ke Jan
贡献者:	Institute of Applied Mathematics, National Chung Hsing University
关键词:	Authenticated encryption;Non-repudiation;Signcryption;Unforgeability
日期:	2002-05-16
上传时间:	2009-12-08 07:38:15 (UTC+0)
出版者:	亞洲大學
摘要:	Zheng proposed two new authenticated encryption schemes, called signcryption, in 1997. But the studies of Petersen and Michels showed that these schemes have the problem “to achieve non-repudiation is to lose confidentiality”. They outlined a solution to solve the problem. Later, He and Wu pointed out that there are forged signatures in the scheme proposed by Petersen and Michels. They also proposed improvement to mend the leak in security. In this paper, we shall show that the scheme of He-Wu still violates the property of unforgeability. Also, a new scheme based on Nyperg-Rueppel digital signature is presented.
關聯:	第十二屆全國資訊安全會議 59-62
显示于类别:	[行動商務與多媒體應用學系] 會議論文

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