Content processing system and content protecting method

Details Content processing system and content protecting method Content processing system and content protecting method

2006-01-31

2006-01-31

Vu, Kim (Department: 2135)

Cryptography

Key management

C713S194000, C711S163000

Reexamination Certificate

active

06993135

ABSTRACT:
A content processing system for use in an electronic apparatus includes a unit for acquiring first revocation list information corresponding to a first media type, and a unit for recording the first revocation list information on a recording medium of a second media type. The recorded first revocation list information is used in authentication between the electronic apparatus and the recording medium of the second media type.

REFERENCES:
patent: 5793868 (1998-08-01), Micali
patent: 5915018 (1999-06-01), Aucsmith
patent: 6128740 (2000-10-01), Curry et al.
patent: 6233341 (2001-05-01), Riggins
patent: 6631427 (2003-10-01), Kubo

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