Information processing apparatus, information processing method and providing medium
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 4, 2008
Grant Date -
N/A
app pub date -
May 11, 2000
filing date -
May 18, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In an information processing apparatus, a key management unit forms a judgment as to whether an authentication key owned by an application program is valid or invalid. A content protection unit is controlled based on this determination so that contents are exchanged between the information processing apparatus and the application program. An encryption/decryption unit encrypts a decrypted content by using an encryption key received from a key management unit and outputs the encrypted content to an encrypted-information addition unit. The encrypted-information addition unit adds encrypted information to the encrypted content received from the encryption/decryption unit and outputs the encrypted content with the encrypted information added thereto to the application program. As a result, it is possible to prevent content from being utilized illegally.
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