Key management and user authentication for quantum cryptography networks
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United States of America Patent
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Dec 25, 2012
Grant Date -
Jul 9, 2009
app pub date -
Apr 16, 2007
filing date -
Apr 18, 2006
priority date (Note) -
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Abstract
Key management and user authentication systems and methods for quantum cryptography networks that allow for users securely communicate over a traditional communication link (TC-link). The method includes securely linking a centralized quantum key certificate authority (QKCA) to each network user via respective secure quantum links or “Q-links” that encrypt and decrypt data based on quantum keys (“Q-keys”). When two users (Alice and Bob) wish to communicate, the QKCA sends a set of true random bits (R) to each user over the respective Q-links. They then use R as a key to encode and decode data they send to each other over the TC-link.
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