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Secure Communication based on Quantum Cryptography : ウィキペディア英語版 | Secure Communication based on Quantum Cryptography
Secure Communication based on Quantum Cryptography (SECOQC) is a project that aims to develop quantum cryptography (see there for further details). The European Union decided in 2004 to invest 11 million EUR in the project as a way of circumventing espionage attempts by ECHELON. Christian Monyk, the coordinator of SECOQC, said people and organizations in Austria, Belgium, the United Kingdom, Canada, the Czech Republic, Denmark, France, Germany, Italy, Russia, Sweden, and Switzerland would participate in the project. On October 8, 2008 SECOQC was launched in Vienna.〔(BBC )〕〔(Yahoo news )〕 == Limitations of classical Quantum Cryptography == Quantum cryptography, usually known as Quantum Key Distribution(QKD) provides powerful security. But it has some limitations. Following no-cloning theorem, QKD only can provide 1:1 connection. So the number of links will increase N(N-1)/2 as N represents the number of nodes. If a node wants to participate into the QKD network, it will cause some issues like constructing quantum communication line. To overcome these issues, SECOQC was started.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Secure Communication based on Quantum Cryptography」の詳細全文を読む
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