Contents management method, content management apparatus,...

Details Contents management method, content management apparatus,... Contents management method, content management apparatus,...

2007-02-20

2007-02-20

Moazzami, Nasser (Department: 2136)

Cryptography

Electric signal modification

Having magnetic record carrier

C380S200000, C380S201000, C380S203000

Reexamination Certificate

active

09611716

ABSTRACT:
An apparatus generates first shared information that is shared by the apparatus and a recording medium by performing a first bilateral authentication. The apparatus encrypts overwrite data that is used to erase key information item recorded in the recording medium using the first shared information. Encrypted overwrite data is transferred to the recording medium. Second shared information is generated and shared by the apparatus and the recording medium by performing a second bilateral authentication between them. The apparatus receives data that is encrypted using the second shared information and that has been used by the recording medium for erasing key information. Encrypted data is decrypted using second shared information item and key information recorded in the recording medium is erased when the decrypted data is identical to overwrite data.

REFERENCES:
patent: 5319705 (1994-06-01), Halter et al.
patent: 5963909 (1999-10-01), Warren et al.
patent: 6266416 (2001-07-01), Sigbj.o slashed.rnsen et al.
patent: 6347846 (2002-02-01), Nakamura
patent: 6463151 (2002-10-01), Iitsuka et al.
patent: 6470085 (2002-10-01), Uranaka et al.
patent: 6577734 (2003-06-01), Etzel et al.
patent: 6587837 (2003-07-01), Spagna et al.
patent: 6842521 (2005-01-01), Nakamura
patent: 2001/0023417 (2001-09-01), Stefik et al.
patent: 2002/0003879 (2002-01-01), Ibaraki et al.
patent: 10-079174 (1998-03-01), None
patent: 1998-025007 (1998-07-01), None
“SDMI Portable Device Specification, Part 1, Version 1.0,” SDMI Secure Digital Music Initiative, Document Number pdwg99070802, Los Angeles, CA, pp. 6-20 (Jul. 8, 1999), XP-000997330.
L. Comerford et al., “Method for Transferring Copy Protected Software Without Destroying Copy-Protection,” IBM Technical Disclosure Bulletin, vol. 27, No. 5, p. 3013 (Oct., 1984), XP-001068909.
European Search Report issued by the European Patent Office, mailed May 3, 2006, in European Appl. No. 00114421.1.

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