Data providing system and method therefor

• US 7,761,465 B1
• Filed: 09/14/2000
• Issued: 07/20/2010
• Est. Priority Date: 09/17/1999
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Ezaki, Tadashi, Nonaka, Akira
• Primary Examiner(s): ALAM, SHAHID AL
• Application Number:
  US09/856,276
• Time in Patent Office: 3,596 Days
• Field of Search: 709/200, 713/155, 713/185, 713/165, 713/194, 713/161, 707/10, 707/9, 707/102, 707/104.1, 707/770, 705/57, 705/54, 705/26, 705/56, 705/53, 705/51, 380/30, 380/705, 380/54, 380/37, 380/233, 380/228
• US Class Current: 707/770
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: G10K 15/02 Synthesis of acoustic waves synthesis of speech G10L13/00
• CPC Class Codes: H04L 2209/60 Digital content management, e.g. content distribution
• CPC Class Codes: H04L 9/083 involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
• CPC Class Codes: H04L 9/321 involving a third party or a trusted authority
• CPC Class Codes: H04L 9/3247 involving digital signatures
• CPC Class Codes: H04L 9/3263 involving certificates, e.g. public key certificate [PKC] or attribute certificate [AC]; Public key infrastructure [PKI] arrangements network architectures or network communication protocols for supporting authentication of entities using certificates in a packet data network H04L63/0823

Abstract

To provide a data providing system able to protect the interests of interested parties of a data providing apparatus. The content provider 101 distributes a secure container 104 storing content data encrypted using content key data, content key data encrypted using distribution key data, and encrypted usage control policy data showing handling of the content data to a SAM 105₁ of a user home network 103. The SAM 105₁ etc. decrypts the content key data and usage control policy data stored in the secure container 104 and determines the handling such as the purchase form and usage form of the content data based on the decrypted usage control policy data.

Claims

1. A data providing system for distributing content data from a data providing apparatus to a data processing apparatus and managing said data providing apparatus and said data processing apparatus by a management apparatus, wherein

said management apparatus prepares a key file storing encrypted content key data and encrypted usage control policy data indicating a content of rights such as usage permission conditions of said content data,

said data providing apparatus provides said content data encrypted by using said content key data, and

said data processing apparatus decrypts said content key data and said usage control policy data stored in said key file and determines the handling of said content data based on the decrypted usage control policy data.

2. A data providing system as set forth in claim 1, wherein said management apparatus adds signature data for verification to the key file.

3. A data providing system as set forth in claim 1, wherein said data providing apparatus prepares a content file storing the content data and provides the content file to the data processing apparatus.

4. A data providing system as set forth in claim 3, wherein said data providing apparatus adds signature data for verification to the content file.

5. A data providing system as set forth in claim 1, wherein

the data providing apparatus prepares usage control policy data and sends it to said management apparatus,

said data processing apparatus determines at least one of the purchase form and the usage form of the distributed content data based on the usage control policy data and sends log data showing the log of at least one of the purchase form and the usage form decided to said management apparatus, and

said management apparatus performs profit distribution processing for distributing the profit obtained along with the purchase and usage of the content data in the data processing apparatus to the interested parties of the data providing apparatus based on the received log data.

6. A data providing method for distributing content data from a data providing apparatus to a data processing apparatus and managing said data providing apparatus and said data processing apparatus by a management apparatus, wherein

said management apparatus prepares a key file storing encrypted content key data and encrypted usage control policy data indicating a content of rights such as usage permission conditions of said content data,

said data providing apparatus provides said content data encrypted by using said content key data, and

said data processing apparatus decrypts said content key data and said usage control policy data stored in said key file and determines the handling of said content data based on the related decrypted usage control policy data.

7. A data providing apparatus which is managed by a management apparatus and distributes content data to a data processing apparatus,

receiving a key file storing encrypted content key data and encrypted usage control policy data indicating a content of rights such as usage permission conditions of said content data, and

distributing a module storing a content file storing the content data encrypted by using said content key data and said key file received from said management apparatus to said data processing apparatus.

8. A data processing apparatus managed by a management apparatus and utilizing content data,

receiving a module containing a key file storing encrypted content key data and encrypted usage control policy data indicating a content of rights such as usage permission conditions of said content data and a content file storing the content data encrypted by using said content key data,

determining at least one between a purchase form and an usage form of said content data based on said usage control policy data, and

transmitting a log data indicating the log of the determined at least one of the related purchase form and usage form to said management apparatus.

9. A data providing method which is managed by a management apparatus and distributes content data to a data processing apparatus,

receiving a key file storing encrypted content key data and encrypted usage control policy data indicating a content of rights such as usage permission conditions of said content data, and

distributing a module storing a content file storing the content data encrypted by using said content key data and said key file received from said management apparatus to said data processing apparatus.

10. A data processing method managed by a management apparatus and utilizing content data,

receiving a module containing a key file storing encrypted content key data and encrypted usage control policy data indicating a content of rights such as usage permission conditions of said content data and a content file storing the content data encrypted by using said content key data,

determining at least one between a purchase form and an usage form of said content data based on said usage control policy data, and

transmitting a log data indicating the log of the determined at least one of the related purchase form and usage form to said management apparatus.