Data processing system, data processing method, data processing apparatus, license system, and program providing medium
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jan 26, 2010
Grant Date -
Aug 8, 2002
app pub date -
Jul 23, 2001
filing date -
Jul 24, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An authentication key is presented to a data processing device by an enable key block (EKB). Even in a case where a memory device does not have an executing function for a mutual authentication processing, an establishment of the mutual authentication processing with a virtual memory device constructed in the data processing device is made as a condition for a data reproduction processing from the memory device or a data recording processing to the memory device. In an unfair data processing device, it is so constructed to present the authentication key by non-decodable enabling key block (EKB), so that only a fair data processing device is able to be authenticated with the virtual memory device and to utilize the contents data.
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