System and method for selective restriction of ciphering

Details System and method for selective restriction of ciphering System and method for selective restriction of ciphering

1997-08-19

1998-07-14

Gregory, Bernarr E.

Cryptography

Cryptanalysis

380 49, 380 59, H04L 900

Patent

active

057816280

ABSTRACT:
A system and method for selectively restricting wireless ciphering communications within a telecommunications system is disclosed. A ciphering database contains flags corresponding to the ciphering restrictions on particular geographical areas. After consulting the particular flag for an area, a ciphering mode is determined either restricting ciphering or allowing it within that geographical or geopolitical area.

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patent: 5455861 (1995-10-01), Faucher et al.
patent: 5528693 (1996-06-01), Leopold
patent: 5594798 (1997-01-01), Cox et al.

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