An effective attack on the quantum key distribution protocol based on quantum encryption

  • Authors:

  • Fei Gao;Su-Juan Qin;Qiao-Yan Wen;Fu-Chen Zhu

  • Affiliations:

  • School of Science, Beijing University of Posts and Telecommunications, Beijing, China;School of Science, Beijing University of Posts and Telecommunications, Beijing, China;School of Science, Beijing University of Posts and Telecommunications, Beijing, China;National Laboratory for Modern Communications, Chengdu, China

  • Venue:
  • CISC'05 Proceedings of the First SKLOIS conference on Information Security and Cryptology
  • Year:
  • 2005

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Abstract

We come up with a special attack strategy to the quantum key distribution protocol based on quantum encryption. With our strategy an eavesdropper can elicit about half of the key bits without being detected by the legal communication parties. Furthermore, the eavesdropping needs only facilities similar to that of the legal parties. Therefore, we draw a conclusion that the original protocol is insecure and, at last, a feasible improvement of the protocol is proposed.