An information-theoretic security analysis of quantum string sealing

  • Authors:

  • Masaki Nakanishi;Seiichiro Tani;Shigeru Yamashita

  • Affiliations:

  • Nara Institute of Science and Technology, Ikoma, Nara, Japan;NTT Communication Science Labs., NTT Corporation, Atsugi, Kanagawa, Japan;Nara Institute of Science and Technology, Ikoma, Nara, Japan

  • Venue:
  • ISP'07 Proceedings of the 6th WSEAS international conference on Information security and privacy
  • Year:
  • 2007

Quantified Score

Hi-index 0.00

Visualization

Abstract

A quantum sealing protocol is a quantum cryptographic protocol that can detect unsealing of a message. It is known that quantum bit sealing is insecure. However, this does not imply that quantum string sealing is also insecure. So the possibility of quantum string sealing has been studied. In this paper, we propose a quantum sealing protocol and give an information theoretic analysis. We also show that our protocol is almost optimal for uniformly distributed inputs in the sense that the upper bound of information leaks almost matches the trivial lower bound.