SYSTEM AND METHOD FOR CONTENTS USE AUTHORITY CONTROL, INFORMATION PROCESSING DEVICE, AND COMPUTER PROGRAM

Title:

SYSTEM AND METHOD FOR CONTENTS USE AUTHORITY CONTROL, INFORMATION PROCESSING DEVICE, AND COMPUTER PROGRAM

Document Type and Number:

Japanese Patent JP2003085321

Kind Code:

A

Abstract:

To realize a system capable of upgrading contents use conditions by eliminating the need of the contents use authority control by users on a service provider side.

In this system, enciphered contents are distributed, and the use of the contents is allowed by only formal users. A service provider receives a contents use authority certificate from the users, acquires the user information and the contents purchase information of the users from the contents use authority certificate on conditions that it is confirmed by the verification of the electronic signature of the issue entity of the contents use authority certificate that data is not tampered, and the upgrade processing of use condition alteration is performed. Thus a contents use condition alteration processing can be performed even if the service provider side does not have user control data.

Inventors:

OKA MAKOTO
ISHIBASHI YOSHITO
ABE HIROSHI
SHIMADA NOBORU
ENARI MASAHIKO
YOSHINO KENJI

Application Number:

JP2001274854A

Publication Date:

March 20, 2003

Filing Date:

September 11, 2001

Export Citation:

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Assignee:

SONY CORP

International Classes:

G06F21/62; G06F12/14; G06F21/10; G06Q10/00; G06Q30/06; G06Q50/00; G06Q50/10; H04L9/08; H04N7/167; H04N21/239; H04N21/266; H04N21/418; H04N21/4623; H04N21/4627; (IPC1-7): G06F17/60; H04L9/08; H04N7/167

Domestic Patent References:

JP2000293586A	2000-10-20
JP2001202566A	2001-07-27
JP2001094554A	2001-04-06
JPH086784A	1996-01-12
JP2000222363A	2000-08-11

Attorney, Agent or Firm:

Eiji Yamada (2 outside)

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