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Paper: Security Analysis of Lal and Awasthi's Proxy Signature Schemes

Authors:
Manik Lal Das
Ashutosh Saxena
V P Gulati
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URL: http://eprint.iacr.org/2003/263
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Abstract: 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.
BibTeX
@misc{eprint-2003-11975,
  title={Security Analysis of Lal and Awasthi's Proxy Signature Schemes},
  booktitle={IACR Eprint archive},
  keywords={public-key cryptography / proxy signature, delegation, warrant, forgery attacks},
  url={http://eprint.iacr.org/2003/263},
  note={ mldas@idrbt.ac.in 12410 received 23 Dec 2003},
  author={Manik Lal Das and Ashutosh Saxena and V   P  Gulati},
  year=2003
}