Memory card

Details Memory card Memory card

1992-08-12

1994-10-18

Buczinski, Stephen C.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

364184, 3649533, 380 4, H04K 100, H04L 900

Patent

active

053575733

ABSTRACT:
Memory card as mass memory device for computer systems preventing unauthorized use of software stored on said memory card. In the memory card a non-changable and read-only protection code is stored indicative of the respective memory card and/or the computer system and/or the manufacturer of the software etc. A protection routine is added to the software program to be protected executing the protected software itself only if a comparison code within the protection routine matches with the non-changeable protection code.

REFERENCES:
patent: 3609697 (1971-09-01), Blevins et al.
patent: 4907272 (1990-03-01), Hazard et al.
patent: 4910774 (1990-03-01), Barakat
patent: 4985920 (1991-01-01), Seki
patent: 5014312 (1991-05-01), Lisimaque et al.
patent: 5056009 (1991-10-01), Mizuta
patent: 5177790 (1993-01-01), Hazard
Lippert, P., "Alles auf einer Karte", C'T, No. 4, pp. 308-312 (1991).
Kontur, et al., "Locking Up System Security", Electronics Week, Vol. 58, No. 7, pp. 68-72 (1985).
Ruoff, C. E., "Method of Manufacturing a Security Device", IBM Technical Disclosure Bulletin, vol. 22, No. 2, pp. 624-626 (Jul. 1979).
Struif, B., "The Use of Chipcards for Electronic Signature and Encryption", Proc. V.L.S.I. and Computer Peripherals, 12, pp. 4-155-158 (May 1989).

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2378570