Terminal device, information storage medium, and data processing method
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United States of America Patent
Stats
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Aug 4, 2009
Grant Date -
Jan 19, 2006
app pub date -
Jul 7, 2005
filing date -
Jul 8, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A portable telephone is configured to include a storage section which includes a protected area and a user area, an encryption processing section which encrypts arbitrary data to generate encrypted data, a separation processing section which divides the encrypted data at an arbitrary position, stores first divided data which is a piece of the divided data and division position information indicating the division position in the protected area, and stores second divided data which is the remaining piece of the divided data in the user area, a recovery processing section which recovers the encrypted data based on the first and second divided data and the division position information when a use request for the arbitrary data has been issued, and a decryption processing section which decrypts the recovered encrypted data.
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