Method and equipment for encrypting/decrypting physical...

Details Method and equipment for encrypting/decrypting physical... Method and equipment for encrypting/decrypting physical...

2011-06-14

2011-06-14

Homayounmehr, Farid (Department: 2434)

Electrical computers and digital processing systems: support

System access control based on user identification by...

Using record or token

C713S161000, C713S183000, C713S184000, C713S185000, C382S115000, C382S276000, C382S278000

Reexamination Certificate

active

07962754

ABSTRACT:
A cryptographic method and equipment decrypting a cryptographic key by generating an auxiliary code based on a randomly determined numeric key and including a result of encryption into a cryptogram. Upon decryption, the cryptographic key is restored using the numeric key restored according to the entire cryptogram. A cryptographic method and equipment scrambles and encrypts physical characteristic information, and descrambles a result of a decryption, thereby enabling any alteration to a cryptogram to be detected because even a minor alteration thereto changes the result of the decryption. A remote identification system encrypts physical characteristic information using a password as a cryptographic key, and fluctuation of the physical characteristic information, authenticating information represented as a different bit pattern at each identifying processing is generated and sent to a transmission medium.

REFERENCES:
patent: 4993068 (1991-02-01), Piosenka et al.
patent: 5168522 (1992-12-01), Simanis et al.
patent: 5541994 (1996-07-01), Tomko et al.
patent: 5594790 (1997-01-01), Curreri et al.
patent: 5604802 (1997-02-01), Holloway
patent: 5680460 (1997-10-01), Tomko
patent: 5724427 (1998-03-01), Reeds, III
patent: 5737420 (1998-04-01), Tomko et al.
patent: 5790668 (1998-08-01), Tomko
patent: 5799088 (1998-08-01), Raike
patent: 5812764 (1998-09-01), Heinz, Sr.
patent: 5838812 (1998-11-01), Pare et al.
patent: 6094499 (2000-07-01), Nakajima et al.
patent: 6108583 (2000-08-01), Schneck et al.
patent: 6185316 (2001-02-01), Buffam
patent: 6219794 (2001-04-01), Soutar et al.
patent: 6268788 (2001-07-01), Gray
patent: 6367016 (2002-04-01), Lambert et al.
patent: 6397369 (2002-05-01), Despain et al.
patent: 6460137 (2002-10-01), Akiyama et al.
patent: 6567566 (2003-05-01), Grycewicz
patent: 6615350 (2003-09-01), Schell et al.
patent: 2331825 (1999-06-01), None
patent: 61-12186 (1986-01-01), None
patent: 03-189756 (1991-08-01), None
patent: 02-027389 (1992-01-01), None
patent: 98/29983 (1998-07-01), None
patent: WO 98/29983 (1998-07-01), None
patent: 98/48538 (1998-10-01), None
patent: WO 98/48538 (1998-10-01), None
European Search Report for a Corresponding European Application No. 00304560, Dated May 18, 2004.
European Search Report for Application No. 05008652.9-2415 and European Search Report for Application No. 05008651.1-2415.
Japanese Office Action issued on Apr. 21, 2009 for corresponding Japanese Patent Application No. 9805752.
U.S. Appl. No. 09/583,228, filed May 31, 2000, Fujii, Yusaku, Fujitsu Limited.
Office Action dated Oct. 27, 2003, issued in corresponding U.S. Appl. No. 09/583,882.
Office Action dated May 21, 2004, issued in corresponding U.S. Appl. No. 09/583,882.
Office Action dated Jan. 5, 2005, issued in corresponding U.S. Appl. No. 09/583,882.
Office Action dated Sep. 2, 2005 issued in corresponding U.S. Appl. No. 09/583,882.
Office Action (Notice of Allowance) dated Mar. 21, 2006, issued in corresponding U.S. Appl. No. 09/583,882.
Office Action (corrected Notice of Allowance) dated Nov. 24, 2006, issued in corresponding U.S. Appl. No. 09/583,882.

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