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Changes to Quantum Cryptography

Yasuyuki SAKAI, Hidema TANAKA

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Summary :

Quantum cryptography has become a subject of widespread interest. In particular, quantum key distribution, which provides a secure key agreement by using quantum systems, is believed to be the most important application of quantum cryptography. Quantum key distribution has the potential to achieve the "unconditionally" secure infrastructure. We also have many cryptographic tools that are based on "modern cryptography" at the present time. They are being used in an effort to guarantee secure communication over open networks such as the Internet. Unfortunately, their ultimate efficacy is in doubt. Quantum key distribution systems are believed to be close to practical and commercial use. In this paper, we discuss what we should do to apply quantum cryptography to our communications. We also discuss how quantum key distribution can be combined with or used to replace cryptographic tools based on modern cryptography.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E93-A No.5 pp.872-879
Publication Date
2010/05/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E93.A.872
Type of Manuscript
Special Section INVITED PAPER (Special Section on Leading-Edge Developments in Quantum Cryptographic Systems)
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