Recorder

Details Recorder Recorder

2007-01-02

2007-01-02

Song, H. (Department: 2135)

Cryptography

Key management

C380S272000, C380S044000, C380S046000, C713S189000

Reexamination Certificate

active

10130294

ABSTRACT:
A memory card (110) decodes data delivered to a data bus (BS3) and extracts a session key (Ks1) sent from a server from the data. Based on the session key (Ks1), an encrypting section (1406) encrypts a public encryption key (KPm (1)) of the memory card (110) and delivers it to a server through the data bus (BS3). The memory card (110) receives data including a license key (Kc) and a license (ID) encrypted with the public encryption key (KPm (1)) different with memory card to memory card, decrypts the data, encrypted it again with uniquely given secret key (K(1)), and stores it in a memory (1415).

REFERENCES:
patent: 5765152 (1998-06-01), Erickson
patent: 5903650 (1999-05-01), Ross et al.
patent: 5991399 (1999-11-01), Graunke et al.
patent: 6360320 (2002-03-01), Ishiguro et al.
patent: 6636966 (2003-10-01), Lee et al.
patent: 08-125651 (1996-05-01), None
patent: 9-312643 (1997-12-01), None
patent: 10-40172 (1998-02-01), None
patent: 11-154944 (1999-06-01), None
patent: 11-265317 (1999-09-01), None
patent: 11-306673 (1999-11-01), None
patent: 2000-324096 (2000-11-01), None
patent: WO 98/42098 (1998-09-01), None
Abhijit K. Choudhury, et al., “Copyright Protection for Electronic Publishing Over Computer Networks”, IEEE Network, May/Jun. 1995, pp. 12-20.
Kiyoshi Yamanaka et al.; NTT R&D, vol. 44, No. 9, pp. 813-818, Sep. 10, 1995. See PCT search report.
Seigo Kotani et al.; Fujitsu, vol. 49, No. 3, pp. 246-249, May 1998. See PCT search report.
Partial translation of Ango Riron Nyumon (Introduction of Code Theory) Chapter 7—Authentication. 1993.
Partial translation of“Features Digital Copyrights” Nikkei Electronics, No. 739, Mar. 22, 1999.
Japanese Office Action.

Affiliated with

Also associated with

Rating

Recorder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Recorder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recorder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3790288