Cryptography – Key management – Having particular key generator
Patent
1990-07-23
1992-02-25
Tarcza, Thomas H.
Cryptography
Key management
Having particular key generator
380 44, 379 59, 455 33, H04L 902
Patent
active
050919423
ABSTRACT:
A system for the authentication of mobile stations and base stations in a cellular communications network. The system includes an algorithm which generates not only a key dependent response to a random challenge, but also a temporary conversation key or call variable which may be used to encipher traffic in the network. To protect against clones in the network, the algorithm uses a rolling key which contains historical information. A bilateral authentication procedure may be used to update the rolling key and to generate a new conversation key.
REFERENCES:
patent: 3934078 (1976-01-01), Gannett
patent: 4549308 (1985-10-01), LoPinto
patent: 4555805 (1985-11-01), Talbot
patent: 4649543 (1987-03-01), Levine
patent: 4731840 (1988-03-01), Mniszewski et al.
patent: 4754481 (1988-06-01), Feggeler
patent: 4803726 (1989-02-01), Levine et al.
patent: 4827507 (1989-05-01), Marry et al.
patent: 4860353 (1889-08-01), Brown
patent: 4876740 (1989-10-01), Levine et al.
patent: 4896370 (1990-01-01), Kasparian et al.
patent: 4914696 (1990-04-01), Dudczak et al.
patent: 4924480 (1990-05-01), Gay et al.
patent: 4926665 (1990-05-01), Stapley et al.
Ericsson GE Mobile Communications Holding Inc.
Swann Tod R.
Tarcza Thomas H.
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