Program, communication device, data processing method, and communication system

• US 20050268087A1
• Filed: 04/27/2005
• Published: 12/01/2005
• Est. Priority Date: 05/26/2004
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Yasuda, Yasunori, Shinozaki, Ikuo
• Granted Patent: US 8,484,449 B2
• Time in Patent Office: Days
• US Class Current: 713/2
• CPC Class Codes: G06F 21/33 using certificates

Abstract

There is provided a program for making a computer perform a first procedure for verifying whether an platform guaranteeing that device identification data for identifying a communication device cannot be rewritten by the user is provided in the communication device, a second procedure for verifying whether the device identification data included in a registration request received from the communication device is not yet registered, and a third procedure for registering the device identification data included in the registration request and issuing user identification data to the user when the program determines in the first procedure that the platform is provided and determines in the second procedure that the device identification data is not yet registered.

Claims

1. A program for making a computer perform:

a first procedure for verifying whether an platform guaranteeing that device identification data for identifying a communication device cannot be rewritten by a user is provided in said communication device,

a second procedure for verifying whether said device identification data included in a registration request received from said communication device is not yet registered, and

a third procedure for registering said device identification data included in said registration request and issuing user identification data to said user when determining in said first procedure that said platform is provided and determining in said second procedure that the device identification data is not yet registered.

2. A program as set forth in claim 1, wherein said first procedure receives hash data booted on said communication device from said communication device and compares that received hash data and pre-held hash data for verification.

3. A program as set forth in claim 2, wherein said hash data received from said communication device is automatically generated at that communication device when the program is booted at said communication device.

4. A program as set forth in claim 1, wherein:

said third procedure issues key data and stores that key data linked with said user identification data, and

said program decrypts encrypted data received linked with said user identification data issued in said third procedure using said key data linked with said user identification data in said third procedure.

5. A communication device comprising:

an interface for receiving a registration request from another communication device and

an execution circuit for performing processing for verifying whether an platform guaranteeing that device identification data for identifying said other communication device cannot be rewritten by a user is provided in said other communication device by communicating with said other communication device through said interface said interface, verifying whether said device identification data included in a registration request received from said other communication device is not yet registered, and registering said device identification data included in said registration request and issuing user identification data to said user when determining that said other communication device is provided with said platform and that said device identification data is not yet registered.

6. A data processing method comprising the steps of:

verifying whether an platform guaranteeing that device identification data for identifying a communication device cannot be rewritten by a user is provided in said communication device,

verifying whether said device identification data included in a registration request received from said communication device is not yet registered, and

registering said device identification data included in said registration request and issuing user identification data to said user when determining in said first procedure that said platform is provided and determining in said second procedure that the device identification data is not yet registered.

7. A program for making a computer perform:

a first procedure for assigning single unique pseudonym identification data used for verifying an platform to each of a plurality of users and verifying that an platform guaranteeing that said pseudonym identification data cannot be rewritten by said users is provided at the communication device,

a second procedure for verifying whether pseudonym identification data received from said communication device is not yet registered, and

a third procedure for performing processing for registering said pseudonym identification data received from said communication device and issuing user identification data to said user relating to said registration request when determining in said first procedure that said platform is provided in said communication device and determining in said second procedure that the data is not yet registered.

8. A program as set forth in claim 7, wherein

said third procedure stores said pseudonym identification data linked with said user identification data, and

said program decrypts the encrypted data received linked with said user identification data issued in said third procedure using said pseudonym identification data linked with said user identification data in said third procedure.

9. A communication device comprising:

an interface for receiving a registration request from another communication device and

an execution circuit for performing processing for assigning single unique pseudonym identification data used for verifying an platform to each of a plurality of users, verifying whether an platform guaranteeing that said pseudonym identification data cannot be rewritten by said user is provided in said other communication device, verifying whether said pseudonym identification data received from said other communication device is not yet registered, and registering said pseudonym identification data received from said other communication device through said interface and issuing user identification data to said user relating to said registration request when determining in said verification that said platform is provided in said other communication device and the data is not yet registered.

10. A data processing method executed by a computer, comprising:

a first step of assigning single unique pseudonym identification data used for verifying an platform to each of a plurality of users and verifying whether an platform guaranteeing that said pseudonym identification data cannot be rewritten by said user is provided at a communication device,

a second step of verifying whether said pseudonym identification data received from said communication device is not yet registered, and

a third step of registering said pseudonym identification data received from said communication device and issuing user identification data to said user relating to said registration request when determining at said first step that said platform is provided in said communication device and at said second step that the data is not yet registered.

11. A communication system comprising:

a first communication device for transmitting a registration request including device identification data and

a second communication device for issuing user identification data in accordance with said registration request received from said first communication device,

said second communication device verifying whether an platform guaranteeing that device identification data for identifying said first communication device cannot be rewritten by a user is provided at said other communication device by communicating with said first communication device through the interface, verifying whether said device identification data included in a registration request received from said first communication device is not yet registered, and registering said device identification data included in said registration request and issuing user identification data to said user when determining that said first communication device is provided with said platform and that said device identification data is not yet registered.