Method for authenticating dual-mode access terminals

Details Method for authenticating dual-mode access terminals Method for authenticating dual-mode access terminals

2011-03-08

2011-03-08

Parthasarathy, Pramila (Department: 2436)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S150000, C713S170000, C713S171000

Reexamination Certificate

active

07904715

ABSTRACT:
A method is provided for operating a dual-mode access terminal such that a CAVE based authentication process may be used in both an IS-2000 and an HRPD mode of operation. Generally, the access terminal receives a CHAP challenge from an access network, and then derives a RAND challenge based on at least a portion of the CHAP challenge. The CAVE based authentication process is then performed using the RAND challenge to produce a SMEKEY and a PLCM. Thereafter a secret CHAP key is derived from the SMEKEY and PLCM and provided to the access network for purposes of authenticating the access terminal in the HRPD mode of operation.

REFERENCES:
patent: 3226682 (1965-12-01), Levinthal et al.
patent: 2005/0078824 (2005-04-01), Malinen et al.
patent: 2005/0228992 (2005-10-01), Mizikovsky
patent: 2005/0251681 (2005-11-01), Robles et al.
Quick, Frank “Common Security Algorithms”—3rd Generations Partnership Project 2. Qualcomm Incorporated, Jul. 10, 2002.

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