Data reproducing/recording apparatus/ method and list updating method

• US 20020184259A1
• Filed: 06/18/2002
• Published: 12/05/2002
• Est. Priority Date: 10/20/2000
• Status: Abandoned Application

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Ishibashi, Yoshihito, Yoshino, Kenji, Akishita, Toru, Shirai, Taizo
• Application Number:
  US10/168,226
• Publication Number:
  US 20020184259A1
• Time in Patent Office: Days
• US Class Current: 715/501.1
• 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: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 27/105 of operating discs

Abstract

Identifiers for both media and contents which are difference categories are stored in a revocation list, and also version information is set. Further, the list is capable of being set up in a memory interface, and can be continuously used at the time of mounting media and at the time of reproducing contents. Upon reading out contents, the version of the revocation list which the device holds is verified, and in the event that the version of the revocation list held is older, reading out of contents is cancelled. Also, the configuration allows unauthorized contents and unauthorized media to be revoked by performing collation with a media identifier at the time of mounting media, and collation with a contents identifier at the time of using contents.

Claims

1. A data reproducing device for executing reproducing processing of contents stored in data storing means, said data reproducing device comprising:

internal memory for storing a revocation list which is a list storing an identifier of at least one of data storing means or contents which are the object of forbidding processing, said list having version information indicating the newness of the list; and

a controller for executing comparison processing between a valid revocation list version stored in header information of contents which are the object of reproducing, and the version of a revocation list stored in said internal memory, and performs processing accompanying the reproducing of said contents which are the object of reproducing, under the condition of confirmation that the version of the revocation list stored in said internal memory is not older than the version set in the header information of said contents which are the object of reproducing.

2. A data reproducing device according to claim 1, wherein said controller has a configuration for executing, as processing accompanying said reproducing, comparison processing between an identifier of at least one of data storing means or contents stored in a revocation list stored in said internal memory and an identifier of contents which are the object of reproducing, or an identifier of data storing means storing the contents which are the object of reproducing;

and is of a configuration of executing processing for canceling data reproduction in the event that an identifier of at least one of data storing means or contents stored in a revocation list and an identifier of contents which are the object of reproducing, or an identifier of data storing means storing the contents which are the object of reproducing, match in said comparison processing.

3. A data reproducing device according to claim 1, wherein said controller has a memory interface for executing accessing to said data storing means, and a control unit for executing control of said memory interface;

and wherein said memory interface is of a configuration for executing comparison processing between a version of a valid revocation list stored in the header information of the contents which are the object of reproducing, and the version of a revocation list stored in said internal memory, based on a data reproduction request command from said control unit.

4. A data reproducing device according to claim 1, wherein said controller has a configuration for executing comparison processing between the version of an updating revocation list which is externally received, and the version of a revocation list which has already been stored in said internal memory, and executing updating processing of the revocation list by said updating revocation list under the condition of confirmation that the version of the revocation list stored in said internal memory is newer than said updating revocation list.

5. A data reproducing device according to claim 4, wherein said controller has a configuration for executing a data tampering check with regard to an externally received updating revocation list, based on a data integrity check value (ICV), and for executing updating processing of the revocation list by said updating revocation list, based on a no data tampering judgment.

6. A data recording device for executing recording processing of contents to be stored in data storing means, said data recording device comprising:

internal memory for storing a revocation list which is a list storing an identifier of at least one of data storing means or contents which are the object of forbidding processing, said list having version information indicating the newness of the list; and

a controller for executing processing for setting a setting value specifying reproduction processing execution by non-reference to the revocation list, as a valid revocation list version to be stored in header information of contents which are the object of recording, and executing contents storing processing to said data storing means.

7. A data recording device according to claim 6, wherein said controller has a memory interface for executing access to said data storing means, and a control unit for executing control of said memory interface;

wherein said memory interface is of a configuration for executing processing for setting the version of a valid revocation list to be stored in the header information of contents which are the object of recording, as a setting value capable of reproduction executing by non-reference to the revocation list, based on a header information generating command accompanying data recording from said control unit.

8. A data recording device according to claim 6, wherein said controller has a configuration for executing comparison processing between the version of an updating revocation list which is externally received, and the version of a revocation list which has already been stored in said internal memory, and executing updating processing of the revocation list by said updating revocation list under the condition of confirmation that the version of the revocation list stored in said internal memory is newer than said updating revocation list.

9. A data recording device according to claim 8, wherein said controller has a configuration for executing a data tampering check with regard to an externally received updating revocation list, based on a data integrity check value (ICV), and for executing updating processing of the revocation list by said updating revocation list, based on a no data tampering judgment.

10. A data reproducing method for a data reproducing device for executing reproducing processing of data stored in data storing means, said method comprising:

a comparing step for executing comparison processing between a valid revocation list version stored in header information of contents which are the object of reproducing, and the version of a revocation list stored in internal memory of said data reproducing device; and

a reproduction-related processing executing step for performing processing accompanying the reproducing of said contents which are the object of reproducing, under the condition of confirmation that the version of the revocation list stored in said internal memory is not older than the version set in the header information of said contents which are the object of reproducing.

11. A data reproducing method according to claim 10, wherein said reproduction-related processing executing step contains a step for executing comparison processing between an identifier of at least one of data storing means or contents stored in a revocation list stored in said internal memory and an identifier of contents which are the object of reproducing, or an identifier of data storing means storing the contents which are the object of reproducing;

and

a step for executing processing for canceling data reproduction in the event that an identifier of at least one of data recording means or contents stored in said revocation list and an identifier of contents which are the object of reproducing, or an identifier of data storing means storing the contents which are the object of reproducing, match in said comparison processing.

12. A data reproducing method according to claim 10, wherein said data reproducing device has a memory interface for executing accessing to said data storing means, and a control unit for executing control of said memory interface, said data reproducing method further comprising:

a step for transmitting a data reproduction request command to said memory interface from said control unit; and

a step for executing comparison processing between a version of a valid revocation list stored in the header information of the contents which are the object of reproducing, and the version of a revocation list stored in said internal memory, based on reception of said data reproduction request command at said memory interface.

15. A list updating method according to claim 14, further comprising:

a step for executing a data tampering check with regard to an externally received updating revocation list, based on a data integrity check value (ICV);

wherein updating processing of the revocation list by said updating revocation list is executed, based on a no data tampering judgment.

18. A data reproducing device according to claim 17, further comprising a control unit for executing transmitting processing of a revocation list set command, which is a set command for the revocation list holding identifier data of at least one of data storing means or contents which are the object of forbidding processing as to said memory interface, as processing at the time of activation;

wherein said memory interface is of a configuration for reading the revocation list into the memory interface in response to reception of said revocation list set command, and executing revocation list set processing to enable reference processing within said memory interface.

19. A data reproducing device according to claim 17, wherein said memory interface is of a configuration for executing a data tampering check based on a data integrity check value (ICV) for the revocation list read into said memory interface, and executing revocation list set processing which enables reference processing within said memory interface, under the condition that a no data tampering judgment has been made.

20. A data reproducing device according to claim 17, wherein said memory interface is of a configuration wherein a data storing means identifier is received from data storing means wherein data which is the object of reproducing is recorded, collation is executed between said received data storing means identifier and an identifier listed in the revocation list set in said memory interface, and in the event that the identifiers mutually match, the data reproducing processing is cancelled.

21. A data reproducing device according to claim 17, said memory interface having a configuration wherein an identifier of contents which are the object of reproducing is obtained from header information of the contents stored in the data storing means, collation is executed between the obtained contents identifier and an identifier listed in the revocation list set in said memory interface, and in the event that the identifiers mutually match, the data reproducing processing is cancelled.

22. A data reproducing device according to claim 17, wherein said revocation list is of a configuration having identifier data for both the data storing means identifier which is the object of forbidding processing and contents which are the object of forbidding processing.

24. A data recording device according to claim 23, further comprising a control unit for executing transmitting processing of a revocation list set command, which is a set command for the revocation list holding an identifier data of at least one of data storing means or contents which are the object of forbidding processing as to said memory interface, as processing at the time of activation;

wherein said memory interface is of a configuration for reading the revocation list into the memory interface in response to reception of said revocation list set command, and executing revocation list set processing to enable reference processing within said memory interface.

25. A data recording device according to claim 23, wherein said memory interface is of a configuration for executing a data tampering check based on a data integrity check value (ICV) for the revocation list read into said memory interface, and executing revocation list set processing which enables reference processing within said memory interface, under the condition that a no data tampering judgment has been made.

26. A data recording device according to claim 23, wherein said memory interface is of a configuration wherein a data storing means identifier is received from data storing means wherein data which is the object of recording is recorded, collation is executed between said received data storing means identifier and an identifier listed in the revocation list set in said memory interface, and in the event that the identifiers mutually match, the data recording processing is cancelled.

27. A data recording device according to claim 23, wherein said revocation list is of a configuration having identifier data for both the data storing means identifier which is the object of forbidding processing and contents which are the object of forbidding processing.

29. A data reproducing method according to claim 28, further comprising:

a step for executing transmitting processing of a revocation list set command, which is a set command for the revocation list holding an identifier data of at least one of a data recording device or contents which are the object of forbidding processing, as to said memory interface which performs access to data storing means, from a control unit, as processing at the time of activation; and

a step at said memory interface for reading the revocation list into the memory interface in response to reception of said revocation list set command, and executing revocation list set processing to enable reference processing within said memory interface.

30. A data reproducing method according to claim 28, wherein, further, a data tampering check is executed based on a data integrity check value (ICV) for the revocation list read into said memory interface, and wherein revocation list set processing which enables reference processing within said memory interface is executed under the condition that a no data tampering judgment has been made.

31. A data reproducing method according to claim 28, further comprising, at said memory interface, a step for receiving a data storing means identifier from data storing means wherein data which is the object of reproducing is recorded, collation is executed between said received data storing means identifier and an identifier listed in the revocation list set in said memory interface, and in the event that the identifiers mutually match, canceling the data reproducing processing.

32. A data reproducing method according to claim 28, further comprising, at said memory interface, a step for obtaining an identifier of contents which are the object of reproducing from header information of the contents stored in the data storing means, executing collation between the obtained contents identifier and an identifier listed in the revocation list set in said memory interface, and in the event that the identifiers mutually match, canceling the data reproducing processing.

13. A data recording method for executing recording processing of contents to be stored in data storing means, said method comprising:

a step for executing processing for setting a setting value specifying reproduction processing execution by non-reference to the revocation list, as a valid revocation list version to be stored in header information of contents which are the object of recording;

and a step for executing contents storing processing to said data storing means.

14. A list updating method for a data processing device, storing in internal memory a revocation list which is a list storing an identifier of at least one of data storing means or contents which are the object of forbidding processing, said list having version information indicating the newness of the list;

wherein comparison processing between the version of an updating revocation list which is externally received, and the version of a revocation list which has already been stored in said internal memory, is executed, and updating processing of the revocation list by said updating revocation list is executed under the condition of confirmation that the version of the revocation list stored in said internal memory is newer than said updating revocation list.

16. A program providing medium for providing a computer program for causing execution on a computer system of data reproducing processing for a data reproducing device which executes reproducing processing of data stored in data storing means, said computer program comprising:

a comparing step for executing comparison processing between a valid revocation list version stored in header information of contents which are the object of reproducing, and the version of a revocation list stored in internal memory of said data reproducing device; and

a reproduction-related processing executing step for performing processing accompanying the reproducing of said contents which are the object of reproducing, under the condition of confirmation that the version of the revocation list stored in said internal memory is not older than the version set in the header information of said contents which are the object of reproducing.

17. A data reproducing device for executing reproducing processing of contents stored in data storing means;

wherein said data reproducing device is of a configuration for reading a revocation list holding identifier data of at least one of data storing means or contents which are the object of forbidding processing into a memory interface which performs access to data storing means, and holding the revocation list in a referable state in consecutively differing processing within the memory interface.

23. A data recording device for executing recording processing of contents to be stored in data storing means;

wherein said data recording device is of a configuration for reading in a revocation list holding identifier data of at least one of data storing means or contents which are the object of forbidding processing into a memory interface which performs access to data storing means, and holding the revocation list in a referable state in consecutively differing processing within the memory interface.

28. A data reproducing method for executing reproducing processing of contents stored in data storing means, said method comprising:

a step for reading a revocation list holding identifier data of at least one of data storing means or contents which are the object of forbidding processing into a memory interface which performs access to data storing means;

a step for holding the revocation list in a referable state in consecutively differing processing within the memory interface; and

a step for making reference to the revocation list set in said memory interface and judging whether data reproduction processing is permissible or impermissible.

33. A data recording method for executing recording processing of contents to be recorded in data storing means, said method comprising:

a step for reading in a revocation list holding identifier data of at least one of data storing means or contents which are the object of forbidding processing into a memory interface which performs access to data storing means;

a step for holding the revocation list in a referable state in consecutively differing processing within the memory interface; and

a step for making reference to the revocation list set in said memory interface and judging whether data recording processing is permissible or impermissible.

34. A data recording method according to claim 33, further comprising:

a step for executing transmitting processing of a revocation list set command, which is a set command for the revocation list holding identifier data of at least one of data storing means or contents which are the object of forbidding processing, as to said memory interface, which performs access to data storing means, from a control unit, as processing at the time of activation;

a step at said memory interface for reading the revocation list into the memory interface in response to reception of said revocation list set command, and executing revocation list set processing to enable reference processing within said memory interface; and

a step for making reference to the revocation list set in said memory interface and judging whether data recording processing is permissible or impermissible.

35. A data recording method according to claim 33, wherein, further, a data tampering check is executed based on a data integrity check value (ICV) for the revocation list read into said memory interface, and revocation list set processing which enables reference processing within said memory interface is executed under the condition that a no data tampering judgment has been made.

36. A data recording method according to claim 33, further comprising, at said memory interface, a step for receiving a data storing means identifier from data storing means wherein data which is the object of reproducing is recorded, collation is executed between said received data storing means identifier and an identifier listed in the revocation list set in said memory interface, and in the event that the identifiers mutually match, canceling the data recording processing.

40. A data reproducing device according to claim 39, having a configuration wherein said memory interface receives an identifier of data storing means which are media, based on a media recognition command from said control unit, and executes collation processing between said received data storing means identifier and an identifier listed in said revocation list.

41. A data reproducing device according to claim 39, having a configuration wherein said memory interface performs mutual authentication processing with data storing means which are media, based on a media recognition command from said control unit, receives a data storing means identifier in said mutual authentication processing, and executes collation processing between said received data storing means identifier and an identifier listed in said revocation list.

42. A data reproducing device according to claim 39, having a configuration wherein said memory interface obtains a contents identifier stored in header information of contents to be reproduced, based on a data reproduction request command from said control unit, and executes collation processing between said obtained contents identifier and an identifier listed in said revocation list.

43. A data reproducing device according to claim 39, wherein said memory interface has a configuration for executing a data tampering check based on a data integrity check value (ICV) with regard to an updating revocation list which is externally received, whereby a no data tampering judgment is made;

and wherein comparison processing between the version of an updating revocation list which is externally received, and the version of a revocation list which has already been stored in said internal memory, is executed, and updating processing of the revocation list by said updating revocation list is executed under the condition of confirmation that the version of the revocation list stored in said internal memory is newer than said updating revocation list.

37. A program providing medium for providing a computer program for causing execution on a computer system for reproduction processing of contents stored in data storing means, said computer program comprising:

a step for reading a revocation list holding identifier data of at least one of data storing means or contents which are the object of forbidding processing into a memory interface which performs access to data storing means;

a step for holding the revocation list in a referable state in consecutively differing processing within the memory interface; and

a step for making reference to the revocation list set in said memory interface and judging whether data reproduction processing is permissible or impermissible.

38. A program providing medium for providing a computer program for causing execution on a computer system for recording processing for contents to be recorded in data storing means, said computer program comprising:

a step for reading in a revocation list holding identifier data of at least one of data storing means or contents which are the object of forbidding processing into a memory interface which performs access to data storing means;

a step for holding the revocation list in a referable state in consecutively differing processing within the memory interface; and

a step for making reference to the revocation list set in said memory interface and judging whether data recording processing is permissible or impermissible.

39. A data reproducing device for executing reproducing processing of contents stored in data storing means, said data reproducing device having:

a memory interface for executing accessing to said data storing means, and a control unit for executing control of said memory interface;

said memory interface having internal memory storing a revocation list holding identifier data for each of data storing device and contents which are the object of forbidding processing;

wherein said memory interface has a configuration wherein a data storing means identifier is received from data storing means wherein data which is the object of reproducing is recorded, collation is executed between said received data storing means identifier and an identifier listed in said revocation list, and in the event that the identifiers mutually match, the data reproducing processing is cancelled;

and wherein an identifier of contents which are the object of reproducing is obtained from header information of the contents stored in the data storing means, collation is executed between the obtained contents identifier and an identifier listed in said revocation list, and in the event that the identifiers mutually match, the data reproducing processing is cancelled.

44. A data recording device for executing recording processing of contents stored in data storing means, said data recording device having:

a memory interface for executing accessing to said data storing means, and a control unit for executing control of said memory interface;

said memory interface having internal memory storing a revocation list holding identifier data for each of data storing device and contents which are the object of forbidding processing;

wherein said memory interface has a configuration wherein a data storing means identifier which is the object of recording data is received, collation is executed between said received data storing means identifier and a list identifier in said revocation list, and in the event that the identifiers mutually match, the data recording processing is cancelled.

45. A data recording device according to claim 44, having a configuration wherein said memory interface receives an identifier of data storing means which are media, based on a media recognition command from said control unit, and executes collation processing between said received data storing means identifier and an identifier listed in said revocation list.

46. A data recording device according to claim 44, having a configuration wherein said memory interface performs mutual authentication processing with data storing means which are media, based on a media recognition command from said control unit, receives a data storing means identifier in said mutual authentication processing, and executes collation processing between said received data storing means identifier and an identifier listed in said revocation list.

48. A data reproducing method according to claim 47, having a configuration wherein said memory interface receives an identifier of data storing means which are media, based on a media recognition command from a control unit, and executes collation processing between said received data storing means identifier and an identifier listed in said revocation list.

49. A data reproducing method according to claim 47, having a configuration wherein said memory interface performs mutual authentication processing with data storing means which are media, based on a media recognition command from a control unit, receives a data storing means identifier in said mutual authentication processing, and executes collation processing between said received data storing means identifier and an identifier listed in said revocation list.

50. A data reproducing method according to claim 47, having a configuration wherein said memory interface obtains a contents identifier stored in header information of contents to be reproduced, based on a data reproduction request command from a control unit, and executes collation processing between said obtained contents identifier and an identifier listed in said revocation list.

47. A data reproducing method for executing reproducing processing of contents stored in data storing means;

wherein, at a memory interface for executing accessing to said data storing means, a data storing means identifier is received from data storing means wherein data which is the object of reproducing is recorded, collation is executed between said received data storing means identifier and an identifier listed in said revocation list, and in the event that the identifiers mutually match, the data reproducing processing is cancelled;

and wherein an identifier of contents which are the object of reproducing is obtained from header information of the contents stored in the data storing means, collation is executed between the obtained contents identifier and an identifier listed in said revocation list, and in the event that the identifiers mutually match, the data reproducing processing is cancelled.

51. A data recording method for executing recording processing of contents stored in data storing means;

wherein, at a memory interface for executing accessing to said data storing means, an identifier of said data storing means which is the object of recording data is received, collation is executed between said received data storing means identifier and a list identifier in said revocation list, and in the event that the identifiers mutually match, processing for canceling data recording is executed.

52. A data recording method according to claim 51, having a configuration wherein said memory interface receives an identifier of data storing means which are media, based on a media recognition command from a control unit, and executes collation processing between said received data storing means identifier and an identifier listed in said revocation list.

53. A data recording method according to claim 51, wherein said memory interface performs mutual authentication processing with data storing means which are media, based on a media recognition command from said control unit, receives a data storing means identifier in said mutual authentication processing, and executes collation processing between said received data storing means identifier and an identifier listed in said revocation list.

54. A program providing medium for providing a computer program for causing execution on a computer system for reproducing processing of contents stored in data storing means, said computer program comprising:

a step for, at a memory interface for executing accessing to said data storing means, receiving a data storing means identifier from data storing means wherein data which is the object of reproducing is recorded, executing collation between said received data storing means identifier and an identifier listed in the revocation list, and in the event that the identifiers mutually match, canceling the data reproducing processing; and

a step for obtaining an identifier of contents which are the object of reproducing from header information of the contents stored in the data storing means, executing collation between the obtained contents identifier and an identifier listed in said revocation list, and in the event that the identifiers mutually match, canceling the data reproducing processing.

55. A program providing medium for providing a computer program for causing execution on a computer system for recording processing of contents to be stored in data storing means, said computer program comprising:

a step for, at a memory interface for executing accessing to said data storing means, receiving an identifier of said data storing means which is the object of recording data, executing collation between said received data storing means identifier and a list identifier in said revocation list, and in the event that the identifiers mutually match, canceling the data recording.