Method and apparatus for maintaining continuous synchronous encr

Details Method and apparatus for maintaining continuous synchronous encr Method and apparatus for maintaining continuous synchronous encr

1992-05-22

1993-09-07

Swann, Tod R.

Cryptography

Key management

Having particular key generator

380 49, 455 331, 379 59, H04L 902

Patent

active

052436535

ABSTRACT:
In a wireless communication system comprising a plurality of fixed communication units (FCUs) (102) and portable communication units (PCUs) (120), each comprising an encryption synchronization counter (ESC) (314, 414), the PCU and FCU having a digital transmission format (201), a method of maintaining encryption and decryption throughout a hand-off is shown, comprising the steps of:

REFERENCES:
patent: 4815128 (1989-03-01), Malek
patent: 4893308 (1990-01-01), Wilson et al.
patent: 4893339 (1990-01-01), Bright et al.
patent: 5060266 (1991-10-01), Dent
patent: 5081679 (1992-01-01), Dent
patent: 5148485 (1992-09-01), Dent
European Telecommunication Standard document prETS 300 175, parts 2,3,5, & 7 entitled "Digital European Cordless Telecommunications Common Interface" dated Aug. 1991 and produced by the European Telecommunications Standards Institute.

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