Comment on Lee J-s et al.'s Identity-Based Designated Verifer Proxy Signature Scheme and its Improvement

Da Jian Liao; Yuan Sheng Tang

doi:10.4028/www.scientific.net/AMR.143-144.753

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 143-144Comment on Lee J-s et al.'s Identity-Based...

Comment on Lee J-s et al.'s Identity-Based Designated Verifer Proxy Signature Scheme and its Improvement

Abstract:

In a designated verifier proxy signature scheme, one can delegate his or her signing capability to another user in such a way that the latter can sign messages on behalf of the former, but the validity of the resulting signatures can only be verified by the designated verifier. Recently, Lee J-s et al. proposed a new ID-Based designated verifier proxy signature scheme. They didn't analysis the security of their scheme. We found out that anyone can generate a valid signature on any message m and mw he choose. To overcome this flaw in Lee J-s et al.'s scheme, we formalized the notion of designated verifier proxy signature scheme, provide a new ID-Based designated verifier proxy signature scheme. We also analyzed the proposed scheme.

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Periodical:

Advanced Materials Research (Volumes 143-144)

Pages:

753-757

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.143-144.753

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Online since:

October 2010

Authors:

Da Jian Liao, Yuan Sheng Tang

Keywords:

Cryptography, Proxy Signature, Strong Designated Verifer Signature

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References

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