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Cryptography > Electric Signal Modification > Having Magnetic Record Carrier (e.g., Tape, Drum)

Having Magnetic Record Carrier (e.g., Tape, Drum)

Having Magnetic Record Carrier (e.g., Tape, Drum) patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

08/24/06 - 20060188093 - Contents management method, contents management apparatus, and recording medium
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 ...



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