Abstract: Through the security analysis of a proxy signature scheme with limited number of signature presented by Wu et al(W·Z·L scheme),the authors find that the scheme has no forward security.Hence,an improved scheme based on square root modulo composites is proposed and the security drawback in W·Z·L scheme is overcome.In the new scheme the data can be transmitted through public channel and less time is needed in generating and verifying signature.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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