Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1991-02-27
1992-09-08
Gregory, Bernarr E.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 49, H04L 908
Patent
active
051464977
ABSTRACT:
This method of key distribution rekeys (605) a group of communication units (107) within an encrypted communication system with over-the-channel rekeying. The method uses a key management controller (101) to manage and distribute keys (1541) to a plurality of communication units and handle acknowledgments from the plurality of communication units that are delayed from receipt of the rekeying message. The rekeying message (615) is sent to any of the group of communication units (107) when an acknowledgment is not received (611) from one or more of the group of communication units (107).
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Gregory Bernarr E.
Jenski Raymond A.
Lukasik Susan L.
Motorola Inc.
Parmelee Steven G.
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