Remote key manipulations for over-the-air re-keying

Details Remote key manipulations for over-the-air re-keying Remote key manipulations for over-the-air re-keying

1991-01-10

1992-09-08

Swann, Tod

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 49, 380 44, H04L 902

Patent

active

051464985

ABSTRACT:
A method of remotely changing an original voice encryption key in a secure radio (10) is provided which includes a central controller (20) transmitting to the secure radio a digital word (42) representing a selective operation to be performed on the original voice encryption key stored in the radio (10). In response to the digital word (42), the radio (10) performs the operation on the original voice encryption key to generate a current voice encryption key.

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patent: 4993067 (1991-02-01), Leopold
patent: 5008938 (1991-04-01), Freeburg et al.

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