Communication protocol for secure communications systems
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United States of America Patent
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Sep 22, 2015
Grant Date -
Sep 12, 2013
app pub date -
Mar 9, 2012
filing date -
Mar 9, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus for transmitting encryption keys in a secure communication system is provided herein. During rekeying of a device, a key encryption key (KEK) is utilized to wrap (encrypt) the traffic encryption key (TEK) when the KEK is available to the device. If unavailable, the TEK will be wrapped using public key encryption with the recipient device's public key. The receiving device will then be able to unwrap the TEK using public key decryption with its own private key. Because TEKs are always transmitted in a secure manner, secure and efficient rekeying of devices on foreign networks can occur.
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