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Phys. Rev. A 68, 026301 (2003) [2 pages]

Comment on “Quantum identification schemes with entanglements”

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Wim van Dam*
MSRI, HP Labs Palo Alto, UC Berkeley, California, USA

Received 5 February 2003; published 28 August 2003

In a recent paper, Mihara [Phys. Rev. A 65, 052326 (2002)] presented several cryptographic protocols that were claimed to be quantum mechanical in nature. In this Comment, it is pointed out that these protocols can be described in purely classical terms. Hence, the security of these schemes does not rely on the usage of entanglement or any other quantum-mechanical property.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.68.026301
DOI:
10.1103/PhysRevA.68.026301
PACS:
03.67.Dd

*Present address: Mathematical Sciences Research Institute, 1000 Centennial Drive, Berkeley, CA, 94720-5070. Electronic address: vandam@cs.berkeley.edu

See Also

Original Article: Takashi Mihara, Quantum identification schemes with entanglements, Phys. Rev. A 65, 052326 (2002).