Quantum three-pass cryptography protocol

Li Yang; Ling-An Wu; Songhao Liu

doi:10.1117/12.483035

13 September 2002 Quantum three-pass cryptography protocol

Li Yang, Ling-An Wu, Songhao Liu

Proceedings Volume 4917, Quantum Optics in Computing and Communications; (2002) https://doi.org/10.1117/12.483035
Event: Photonics Asia, 2002, Shanghai, China

Abstract

We present a new kind of quantum cryptography protocol based on Shamir's three-pass protocol of classical cryptography, which allows the transmission of qubits directly and secretly via the aid of an unjammable classical channel. In this protocol we implement the encryption and decryption transformations via rotations on the Poincare sphere of the photons polarization parameters. The key technique is that Bob's encryption rotation must be commutative with Alice s decryption rotation; this means that the axes of these two rotations must be parallel. We also present a security analysis of the protocol under a man-in-the-middle attack.

Citation Download Citation

Li Yang, Ling-An Wu, and Songhao Liu "Quantum three-pass cryptography protocol", Proc. SPIE 4917, Quantum Optics in Computing and Communications, (13 September 2002); https://doi.org/10.1117/12.483035

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