Mobile terminal authentication method capable of reducing...

Details Mobile terminal authentication method capable of reducing... Mobile terminal authentication method capable of reducing...

2004-11-22

2009-12-08

Zand, Kambiz (Department: 2434)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C380S247000

Reexamination Certificate

active

07631186

ABSTRACT:
A mobile terminal transmits an N-th authentication key to an authentication server when the mobile terminal has moved from a coverage area under a certain radio access point to a coverage area under another radio access point. The N-th authentication key is generated by applying a hash function to a random number a number of times one smaller than an (N−1)th authentication key which was transmitted when the mobile terminal moved to the coverage area under the certain radio access point. Upon receipt of the N-th authentication key from the mobile terminal, the authentication server applies the hash function once to the N-th authentication key, and compares the result with the (N−1)th authentication key. Then, the authentication server determines that the authentication is successful when there is a match between both keys.

REFERENCES:
patent: 5751812 (1998-05-01), Anderson
patent: 2004/0077335 (2004-04-01), Lee et al.
patent: 2001-111544 (2001-04-01), None
patent: 2001-273257 (2001-10-01), None
patent: 2003-060653 (2003-02-01), None
patent: 2003-188885 (2003-07-01), None

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