Memory card

Details Memory card Memory card

2006-02-14

2006-02-14

Trammell, James P. (Department: 3621)

Data processing: financial, business practice, management, or co

Business processing using cryptography

Secure transaction

C713S150000, C713S171000, C705S051000, C705S052000, C705S057000, C705S058000, C705S059000, C705S064000, C380S200000, C380S201000, C380S202000, C380S203000, C380S277000, C380S282000

Reexamination Certificate

active

06999948

ABSTRACT:
A memory card110extracts a session key Ks from the data applied onto a data bus BS3by carrying out a decryption process. An encryption processing unit1406encrypts a public encryption key KPcard(1) of memory card110based on session key Ks, and applies the encrypted key to a server via data bus BS3. A memory1412receives from a server data such as license key Kc, license ID data License-ID and user ID data User-ID encrypted with a public encryption key KPcard(1) differing for each memory card for storage, and receives encrypted content data [Dc]Kc encrypted with license key Kc from data bus BS3for storage.

REFERENCES:
patent: 6055314 (2000-04-01), Spies et al.
patent: 2002/0013772 (2002-01-01), Peinado
patent: 0 561 685 (1993-09-01), None
patent: 62-53042 (1987-03-01), None
patent: 8-69419 (1996-03-01), None
patent: 8-186667 (1996-07-01), None
patent: 11-328033 (1999-11-01), None
Nikkei Electronics No. 739, pp. 49-53, Mar. 22, 1999. See PCT search report.
Nikkei Electronics No. 728, pp. 31-32, Oct. 19, 1998. See PCT search report.
Nikkei Electronics No. 731, pp. 29-30, Nov. 30, 1998. See PCT search report.

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