SYMMETRIC ENCRYPTION KEY GENERATION USING WIRELESS PHYSICAL LAYER INFORMATION WITHOUT SHARING ANY INFORMATION PERTINENT TO THE KEY
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United States of America Patent
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Mar 25, 2016
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Mar 27, 2015
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Abstract
Symmetric keys are generated by an algorithm that uses the randomness from the wireless PHY layer to extract the keys. When used with reconfigurable antennas, the algorithm yields longer keys. By using the randomness from the wireless PHY layer, the algorithm solves the issue of secure information leakage to the wireless channel during key establishment phase. The algorithm also omits transmitting anything secure during this phase and prevents any intruder from obtaining information related to the key. This approach can automatically secure the communications over open wireless networks (those without authentication or encryption) or closed wireless networks using other methods of authentication.
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