Content processing apparatus and content protection program

• US 20040260923A1
• Filed: 04/08/2004
• Published: 12/23/2004
• Est. Priority Date: 10/12/2001
• Status: Active Grant

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Yugawa, Taihei, Nakai, Shinichi, Harada, Shunji, Matsui, Shinichi, Noguchi, Naohiko
• Granted Patent: US 7,487,547 B2
• Time in Patent Office: Days
• US Class Current: 713/165
• CPC Class Codes: G06F 21/1014 to tokens
• CPC Class Codes: H04M 1/66 with means for preventing unauthorised or fraudulent calling verifying user identity or authority in secret or secure digital communications H04L9/32
• CPC Class Codes: H04M 1/72403 with means for local support of applications that increase the functionality
• CPC Class Codes: H04M 1/72442 for playing music files
• CPC Class Codes: H04M 2250/14 including a card reading device

Abstract

A contents processing device permitting, when contents are to be stored in a recording medium, only a specified device to read out the stored contents is to be provided, and a contents processing device capable, where it is a mobile telephone, of flexibly adapting to a change of a unique telephone number or a type of the mobile telephone. For the purpose, the contents processing device for inputting and outputting contents to and from a recording medium is provided with contents storage means (RAM) for storing contents, an ID storage unit (ROM) for storing an ID capable of identifying the contents processing device, a recording medium input/output unit (memory card I/F) for inputting to and outputting from the recording medium, and a ciphering unit (ciphering program) for enciphering contents within the contents storage unit by use of a ciphering key generated from the ID within the ID storage unit and storing it from the recording medium input/output unit into the recording medium.

Claims

1. A contents processing device for inputting and outputting contents to and from a recording medium provided with a contents storage unit for storing contents, an ID storage unit for storing an ID capable of uniquely identifying said contents processing device, a recording medium input/output unit for inputting to and outputting from said recording medium, and a ciphering unit for enciphering contents within said contents storage unit by use of a ciphering key generated from the ID within said ID storage unit and storing it from said recording medium input/output unit into said recording medium.

2. The contents processing device according to claim 1, wherein said contents processing device is a mobile telephone and said ID is a telephone number of the mobile telephone.

3. The contents processing device according to claim 1, wherein said ID is generated on the basis of any one or more items of information comprising a manufacture number, a manufacturer number, a color identification number and a telephone number of said contents processing device.

7. The contents processing device according to claim 1, wherein an alternative ID storage unit for storing an ID before its changing is provided separately from said ID storage unit when the ID of said contents processing device is changed, and, when said ciphering unit is to encipher contents within said contents storage unit, enciphering is accomplished by use of a ciphering key generated from the ID within said alternative ID storage unit if any ID is present in said alternative ID storage unit, or enciphering is accomplished by use of a ciphering key generated from the ID within said ID storage unit if no ID is present in said alternative ID storage unit.

9. The contents processing device according to claim 7, wherein said contents processing device is a mobile telephone and said ID is the telephone number of the mobile telephone.

11. The contents processing device according to claim 1, wherein an ID output unit is provided to store the ID within said ID storage unit from said recording medium input/output unit into said recording medium.

13. The contents processing device according to claim 1, wherein a hysteresis ID storage unit storing an ID changing hysteresis of said contents processing device is provided.

15. The contents processing device according to claim 13, wherein said contents processing device is a mobile telephone and said ID is the telephone number of the mobile telephone.

4. A contents processing device for inputting and outputting contents to and from a recording medium provided with a contents storage unit for storing contents, an ID storage unit for storing an ID capable of uniquely identifying said contents processing device, a recording medium input/output unit for inputting to and outputting from said recording medium, and a ciphering unit for deciphering contents within said recording medium by use of a ciphering key generated from the ID within said ID storage unit.

5. The contents processing device according to claim 4, wherein said contents processing device is a mobile telephone and said ID is a telephone number of the mobile telephone.

6. The contents processing device according to claim 4, wherein said ID is generated on the basis of any one or more items of information comprising a manufacture number, a manufacturer number, a color identification number and a telephone number of said contents processing device.

8. The contents processing device according to claim 4, wherein an alternative ID storage unit for storing an ID before its changing is provided separately from said ID storage unit when the ID of said contents processing device is changed and, when said ciphering unit is to decipher contents within said recording medium, deciphering is accomplished by use of a ciphering key generated from the ID within said alternative ID storage unit if any ID is present in said alternative ID storage unit, or deciphering is accomplished by use of a ciphering key generated from the ID within said ID storage unit if no ID is present in said alternative ID storage unit.

10. The contents processing device according to claim 8, wherein said ID is generated on the basis of any one or more items of information comprising the manufacture number, the manufacturer number, the color identification number and the telephone number of said contents processing device.

12. The contents processing device according to claim 4, wherein an ID input unit is provided to read the ID stored in said recording medium from said recording medium input/output unit.

14. The contents processing device according to claim 4, wherein a hysteresis ID storage unit storing an ID changing hysteresis of said contents processing device is provided.

16. The contents processing device according to claim 14, wherein said ID is generated on the basis of any one or more items of information comprising the manufacture number, the manufacturer number, the color identification number and the telephone number of said contents processing device.

17. The contents processing device according to claim 14, wherein said ciphering unit deciphers contents within said recording medium by use of ciphering keys generated from the one or more IDs stored in said hysteresis ID storage unit, and correctly deciphered contents out of them are enciphered by use of the ciphering key generated from the ID within said ID storage unit and stored into said recording medium.

18. The contents processing device according to claim 17, wherein said ciphering unit has a hash for checking, when contents within said recording medium are to be deciphered by use of the ciphering keys generated from the one or more IDs stored in said hysteresis ID storage unit, whether or not the contents have been correctly deciphered.

19. The contents processing device according to claim 17, further provided with attribute information managing means for managing, separately from the contents, attribute information including a size, a generation date and an enciphering date of each content before its enciphering, and comparator means for comparing the attribute information before the enciphering and the attribute information of the deciphered contents, wherein

when said ciphering unit is to decipher the contents within said recording medium by use of the ciphering keys generated from the one or more IDs stored in said hysteresis ID storage unit, it is checked whether or not the contents have been correctly deciphered by comparing the attribute information before said enciphering with the attribute information of the deciphered contents.

20. The contents processing device according to claim 18, wherein, if the contents have been correctly deciphered, the correctly deciphered contents are again enciphered by use of the ciphering key generated from a current ID and stored into said recording medium.

21. The contents processing device according to claim 19, wherein, if the contents have been correctly deciphered, the correctly deciphered contents are again enciphered by use of the ciphering key generated from the current ID and stored into said recording medium.

34. The contents processing device according to claim 4, wherein there is provided a hysteresis ID storage unit for storing a changed hysteresis of the ID of said contents processing device, said cipher processing unit repeatedly executes deciphering with the ciphering key generated from the ID stored in said hysteresis ID storage unit until the deciphering succeeds in the event that deciphering with a ciphering key generated from the ID stored in said ID storage unit is failed.

22. A contents protection program for causing a contents processing device for inputting and outputting contents to and from a recording medium to function as a device to encipher the contents and storing the enciphered contents into said recording medium, the contents processing device being caused:

to acquire contents held by said contents processing device,

to generate a ciphering key by at least use of an ID stored by said contents processing device and permitting unique identification of the contents processing device, and

to execute enciphering processing to encipher the acquired contents by use of said ciphering key and storing the enciphered contents into said recording medium.

23. The contents protection program according to claim 22, wherein, if said contents processing device is a mobile telephone, said contents processing device is caused to function by use of a telephone number of the mobile telephone as said ID.

24. The contents processing device and contents protection program according to claim 22, wherein said contents processing device is caused to function by use of any one or more items of information comprising a manufacture number, a manufacturer number, a color identification number and a telephone number of said contents processing device as said ID.

25. The contents protection program according to claim 22, wherein, in the event that said contents processing device has an alternative ID storage unit for storing an alternative ID before its changing, separately from an ID storage unit, when the ID of said contents processing device is to be changed, said ciphering key is generated by use of, with priority over any other ID, the ID present in said alternative ID storage unit if any ID is present in said alternative ID storage unit.

28. The contents protection program according to claim 22, wherein, in the event that said contents processing device has a hysteresis ID storage unit capable of storing a plurality of IDs, separately from the ID storage unit for storing the ID to identify the contents processing device, contents within said recording medium are deciphered by use of ciphering keys generated from the one or more IDs stored in said hysteresis ID storage unit, the contents that have been correctly deciphered out of them are enciphered by use of the ciphering key generated from the ID stored in said ID storage unit, and the resultant enciphered contents are stored into said recording medium.

29. The contents protection program according to claim 28, wherein, if said contents processing device is a mobile telephone, said contents processing device is caused to function by use of the telephone number of the mobile telephone as said ID.

30. The contents protection program and contents protection program according to claim 28, wherein said contents processing device is caused to function by use of any one or more items of information comprising the manufacture number, the manufacturer number, the color identification number and the telephone number of said contents processing device as said ID.

26. A contents protection program for causing a contents processing device for inputting and outputting contents to and from a recording medium to function as a device to decipher contents stored in said recording medium, the contents processing device being caused to function as a ciphering unit:

to acquire an enciphered ciphering key stored in said recording medium,

to generate a ciphering key by at least using an ID stored by said contents processing device and permitting identification of the contents processing device,

to decipher said enciphered ciphering key by use of said ciphering key, and

to execute enciphering processing to decipher the enciphered contents by use of said deciphered ciphering key.

27. The contents protection program according to claim 26, wherein, in the event that said contents processing device has an alternative ID storage unit for storing an alternative ID before its changing separately from said ID when the ID of said contents processing device is to be changed, when the ID of said contents processing device is to be changed, said ciphering key for use in deciphering is generated by use of, with priority over any other ID, the ID present in said alternative ID storage unit if any ID is present in said alternative ID storage unit.

31. The contents protection program according to claim 26, wherein, in the event that said contents processing device has a hysteresis ID storage unit capable of storing a plurality of IDs, separately from the ID storage unit for storing the ID to identify the contents processing device, contents within said recording medium are deciphered by use of ciphering keys generated from the one or more IDs stored in said hysteresis ID storage unit, the contents that have been correctly deciphered out of them are enciphered by use of the ciphering key generated from the ID stored in said ID storage unit, and the resultant enciphered contents are stored into said recording medium.

32. The contents protection program according to claim 31, wherein, if said contents processing device is a mobile telephone, said contents processing device is caused to function by use of the telephone number of the mobile telephone as said ID.

33. The contents processing device and the contents protection program according to claim 31, wherein said contents processing device is caused to function by use of any one or more items of information comprising the manufacture number, the manufacturer number, the color identification number and the telephone number of said contents processing device as said ID.