[Resource Topic] 2003/263: Security Analysis of Lal and Awasthi's Proxy Signature Schemes

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Security Analysis of Lal and Awasthi’s Proxy Signature Schemes

Authors: Manik Lal Das, Ashutosh Saxena, V P Gulati


In this paper, we analyze two proxy signatures scheme [1], [2] proposed by Lal and Awasthi and found that both the schemes suffer with the security flaws. The scheme [1] suffers with proxy signer’s forgery attacks and misuse of original signer’s delegated information. The other scheme [2] suffers with original signer’s forgery attack, proxy signer’s undeniability and misuse of delegated information.

ePrint: https://eprint.iacr.org/2003/263

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