Personal station authentication system and authentication method

Details Personal station authentication system and authentication method Personal station authentication system and authentication method

1997-10-06

2000-10-17

Hunter, Daniel S.

Telecommunications

Radiotelephone system

Security or fraud prevention

380 21, H04Q 720

Patent

active

061344311

ABSTRACT:
A public key cryptosystem is used for the authentication of a personal station (PS) which subscribes for a plurality of radio communication exchange systems. A public key of PS is registered into a public key DB of a public key management device. A private key is registered into PS. When PS moves into a service area of a certain radio communication exchange system, an exchange in that radio communication exchange system requests the public key management device for a public key of PS and makes a check for authentication of PS based on the public key cryptosystem by use of the received public key. Thereafter, when PS moves into a service area of another radio communication exchange system, an exchange in the other radio communication exchange system similarly requests the public key management device for a public key of PS and receives the same public key. The exchange in the other radio communication exchange system makes a check for authentication of PS based on the public key cryptosystem by use of the received public key. In the case where the authentication between each radio communication exchange system and PS results in success, each radio communication exchange system can determine a peculiar authentication key to inform PS of the peculiar authentication key so that the authentication of PS from that time onward is performed using the peculiar authentication key.

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patent: 5390252 (1995-02-01), Suzuki
patent: 5748742 (1998-05-01), Tisdale
patent: 5940512 (1999-08-01), Tomoike

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