Title:
INFORMATION PROCESSOR
Document Type and Number:
Japanese Patent JP3794951
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an information processor with an encryption device, which can improve protection of the copyright to the received data and can deal with the life of a recording medium suitably.
SOLUTION: This processor is provided with a copyright protection identification part 4 to identify whether the received data is the data protected by the copyright or not and a reliability decision part 8 to decide the reliability of a recording medium 2. A encryption key is formed in the encryption key formation part 6 based on the prescribed information of the recording medium 2 in the case the reliability of the recording medium 2 is high in the reliability decision part 8 when the data identified that it is protected by the copyright in the copyright protection identification part 4 is enciphered. On the other hand, when it is determined that the reliability of the recording medium 2 is low, the encryption key is formed based on the prescribed information of the information processor 1.
Inventors:
Katsura Eren
Application Number:
JP2001380390A
Publication Date:
July 12, 2006
Filing Date:
December 13, 2001
Export Citation:
Assignee:
Sharp Corporation
International Classes:
G06F12/14; H04L9/14; G06F21/10; G06F21/60; G06F21/62; H04L9/08; (IPC1-7): H04L9/14; G06F12/14
Domestic Patent References:
| JP2000187935A |
Attorney, Agent or Firm:
Eisuke Fujimoto
Masayoshi Kanda
Akio Miyao
Masayoshi Kanda
Akio Miyao