Method and device for limiting the number of authentication oper

Details Method and device for limiting the number of authentication oper Method and device for limiting the number of authentication oper

1994-05-25

1996-08-27

Gregory, Bernarr E.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 24, 380 25, 235379, 235380, H04L 932

Patent

active

055509193

ABSTRACT:
To resolve the problems related to the divulgation of the algorithms for the transcoding of the secret codes in chip cards, notably prepayment type chip cards, it is planned to limit the number of authentication operations possible by the number of units contained in the card. It is shown that in this case this number, which is generally small, for example about a hundred units, limits the number of attempts that can be made by a fraudulent person trying to penetrate the mysteries of the secret enciphering algorithm.

REFERENCES:
patent: 4572946 (1986-02-01), Schrenk
patent: 4667087 (1987-05-01), Quintana
patent: 4819202 (1989-04-01), Schrenk
patent: 4827450 (1989-05-01), Kowalski
patent: 4868489 (1989-09-01), Kowalski
patent: 4881199 (1989-11-01), Kowalski
patent: 4882474 (1989-11-01), Anderl et al.
patent: 4890187 (1989-12-01), Kowalski et al.
patent: 4896298 (1990-01-01), Kowalski
patent: 4916333 (1990-04-01), Kowalski
patent: 5003371 (1991-03-01), Kowalski et al.
patent: 5022001 (1991-06-01), Kowalski
patent: 5060198 (1991-10-01), Kowalski
patent: 5060261 (1991-10-01), Kowalski et al.
patent: 5097146 (1992-03-01), Kowalski et al.
patent: 5146068 (1992-09-01), Ugawa et al.
patent: 5191498 (1993-03-01), Kowalski
patent: 5291434 (1994-03-01), Kowalski
patent: 5365587 (1994-11-01), Campbell et al.
Patent Abstracts Of Japan vol. 11, No. 12 (P-535) 13 Jan. 1987 & JP-A-61187075 (Toshiba Corp) 20 Aug. 1986.

Affiliated with

Also associated with

Rating

Method and device for limiting the number of authentication oper does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and device for limiting the number of authentication oper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for limiting the number of authentication oper will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1062162