Information processing apparatus, information processing method, information ...

(30) Foreign Application Priority Data

Oct. 2, 1998 (JP) 10-281087

(51) Int. CI.

H04L 9/00 (2006.01)
G06F11/00 (2006.01)

(52) U.S. CI 713/169; 713/170; 713/193;

380/281; 380/284; 726/7; 726/27

(58) Field of Classification Search 713/169,

713/170,193; 380/281,284; 726/7,27 See application file for complete search history.

An information processing apparatus, an information processing method, and an information providing medium are provided. Encrypted information, an encrypted first key for decrypting the encrypted information, and a second key for decrypting the first key are processed to store the information in a storage medium. To be more specific, cross certification is executed with the storage medium, the first key is decrypted by the second key, the decrypted first key is encrypted, and the decrypted first key and the encrypted information are stored in the storage medium. The novel constitution prevents unauthorized replication of information by use of a low-cost, general-purpose semiconductor memory.

54 Claims, 10 Drawing Sheets

FOREIGN PATENT DOCUMENTS

JP 08-186667 7/1996

OTHER PUBLICATIONS

A technique to build a secret key in integrated circuits for identification and authentication applications; Lee, J.W.; Daihyun Lim; Gassend, B.; Suh, G.E.; van Dijk, M.; Devadas, S.; VLSI Circuits, 2004. Digest of Technical Papers. 2004 Symposium on Jun. 17-19,2004 pp. 176-179 *

Intellectual property authentication by watermarking scan chain in design-for-testability flow; Aijiao Cui; Chip-Hong Chang; Circuits and Systems, 2008. ISC AS 2008. IEEE International Symposium on May 18-21, 2008 pp. 2645-2648.*

Office Action issued by Japan Patent Office in Japanese Patent Application No. JP 10-281087 on Nov. 25, 2008 (3 pages).

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