Cryptographic key distribution system
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United States of America Patent
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Dec 2, 2014
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N/A
app pub date -
Aug 3, 2012
filing date -
Aug 5, 2011
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Abstract
The invention concerns a cryptographic key distribution system comprising a server node, a repeater network connected to the server node through a quantum channel, and a client node connected to the repeater network through a quantum channel; wherein in use: the repeater network and the client node cooperatively generate a transfer quantum key which is supplied to a system subscriber by the client node; the server node and the repeater network cooperatively generate a link quantum key; the repeater network encrypts the link quantum key based on the transfer quantum key and sends the encrypted link quantum key to the system subscriber through a public communication channel; the server node encrypts a traffic cryptographic key based on the link quantum key and a service authentication key and sends the encrypted traffic cryptographic key to the system subscriber through a public communication channel.
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