Security model for sharing in interactive television application

Details Security model for sharing in interactive television application Security model for sharing in interactive television application

1998-05-29

2000-03-14

Swann, Tod R

Cryptography

Communication system using cryptography

Wireless communication

713175, 713156, H04L 932

Patent

active

060383194

ABSTRACT:
A system and method implemented in an interactive television system for restricting access between modules of different interactive television applications and carousels. The system broadcasts modules from a broadcast station to a plurality of receiving stations, which execute applications containing the modules. The applications utilize a credential consisting of a producer identification number (ID) and an application ID for each of the grantor and grantee applications/carousels, an expiration date, a producer certificate and a signature. A application requesting access (grantee) and a carousel granting access (grantor) are each identified by respective producer and application IDs. The credential utilizes public key encryption for ensure the integrity of the credential. The producer and application IDs of the grantee application and the application ID of the grantor carousel may be replaced with wildcards so that access to a single carousel's modules is granted to a group of producers or applications, or access to a group of carousels is granted to a single producer or application.

REFERENCES:
patent: 4995080 (1991-02-01), Bestler et al.
patent: 5046090 (1991-09-01), Walker et al.
patent: 5586260 (1996-12-01), Hu
patent: 5625693 (1997-04-01), Rohatgi et al.
patent: 5920626 (1999-12-01), Durden et al.
International Search Report for Application No. PCT/US99/11537 mailed Aug. 24, 1999.

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