Remarks on One Arbitrated Quantum-signature Scheme

Zhengjun Cao

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: 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},
      url = {https://eprint.iacr.org/2009/237}
}