Cryptography – Communication system using cryptography – Wireless communication
Reexamination Certificate
2005-12-27
2005-12-27
Barron, Jr., Gilberto (Department: 2132)
Cryptography
Communication system using cryptography
Wireless communication
C380S265000, C380S264000, C380S278000, C713S160000
Reexamination Certificate
active
06980658
ABSTRACT:
Method and apparatus for encrypting transmission traffic at separate protocol layers L1, L2, and L3so that separate encryption elements can be assigned to separate types of transmission traffic, which allows the implementation of different levels of encryption according to service requirements. Encryption elements use variable value inputs, called crypto-syncs, along with semi-permanent encryption keys to protect from replay attacks from rogue mobile stations. Since crypto-sync values vary, a method for synchronizing crypto-syncs at the mobile station and base station is also presented.
REFERENCES:
patent: 4754482 (1988-06-01), Weiss
patent: 6081600 (2000-06-01), Blanchard et al.
patent: 6151676 (2000-11-01), Cuccia et al.
patent: 0054456 (2000-09-01), None
Chuang, S-C., “Secruing ATM Networks.” ACM Conference on Computer and Communications Security. New York. Mar. 14, 1996, pp. 19-30.
Mehrotra A. et al., “Mobility and Security Management in the GSM System and Some Proposed Future Improvements.” New York, vol. 86, No. 7, Jul. 1998, pp. 1480-1497.
Quick, Jr. Roy F.
Rezaiifar Ramin
Tiedemann Jr. Edward G.
Wang Jun
Williamson Paul
Barron Jr. Gilberto
Choi Jae-Hee
Minhas Sandip S. (Nicky)
Qualcomm Incorporated
Stulberger Cas
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