Title:
コンテンツ暗号化方法、これを利用したネットワークによるコンテンツ提供システム及びその方法
Document Type and Number:
Japanese Patent JP4755189
Kind Code:
B2
Abstract:
Disclosed are a contents encryption method, and a system and method for providing contents through a network using the contents encryption method. In order to provide contents through the network more securely, at least one piece of contents and corresponding metadata are recursively multi-encrypted at least once, and encrypted data are then provided. In particular, encrypted positions of the contents and corresponding decryption information are expressed as metadata, and the metadata include parameter information on respective encryption tools used for multi-encryption, an order of the applied encryption tools, positions of the encryption tools, and a list of encryption tool substitutes. The metadata are provided when the contents are provided. Therefore, the contents provider and receiver can more safely and systematically manage the metadata including contents decryption information, and multimedia are efficiently protected, managed, and controlled.
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Inventors:
Kim, Moon-Tul
Park, Kung-Saw
Lee, Bonn
Park, Kung-Saw
Lee, Bonn
Application Number:
JP2007536609A
Publication Date:
August 24, 2011
Filing Date:
October 12, 2005
Export Citation:
Assignee:
KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
International Classes:
H04L9/14; G06F21/24
Domestic Patent References:
| JP2001524771A | 2001-12-04 |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Masakazu Ito
Yuko Hara
Masakazu Ito
Yuko Hara