Paper 2009/237

Remarks on One Arbitrated Quantum-signature Scheme

Zhengjun Cao

Abstract

Zeng and Keitel proposed an arbitrated quantum signature scheme In 2002. Recently, Curty and Lütkenhaus pointed out that the protocol is not operationally specified. In a reply, Zeng gave more details of the scheme. The author also claimed that the scheme is suitable for unknown messages. In this letter, we remark that the invented scenario in the original scheme is artificial. This is because its security entirely depends on the presence of a trustworthy arbitrator. Moreover, the claim that the original scheme is suitable for unknown messages is not sound.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Published elsewhere. Unknown where it was published
Contact author(s)
zhencao @ ulb ac be
History
2009-05-30: received
Short URL
https://ia.cr/2009/237
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2009/237,
      author = {Zhengjun Cao},
      title = {Remarks on One Arbitrated Quantum-signature Scheme},
      howpublished = {Cryptology ePrint Archive, Paper 2009/237},
      year = {2009},
      note = {\url{https://eprint.iacr.org/2009/237}},
      url = {https://eprint.iacr.org/2009/237}
}
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