Method and apparatus for certifying services obtained using a po

Details Method and apparatus for certifying services obtained using a po Method and apparatus for certifying services obtained using a po

1986-12-30

1989-04-25

Paschall, M. H.

Registers

Systems controlled by data bearing records

Credit or identification card systems

235379, 235492, G06F 1530

Patent

active

048250520

ABSTRACT:
A method and apparatus for certifying services obtained with the aid of a portable carrier such as a memory card. A portable carrier (2) such as a credit card is adapted to be connected to an apparatus (1) that calculates a visual record or certificate (C), composed of a result (R) and parameters (PI, PE) necessary for calculating the result. This result is calculated by processing circuits (T2) in the card (2) under the control of a program (P2) recorded in its memory (M2) and of a secret key (S). The result emitted after a service has been furnished can then be recalculated, to certify that the service has been furnished. r

REFERENCES:
patent: 4375032 (1983-02-01), Uchida
patent: 4449040 (1984-05-01), Matsuoka et al.
patent: 4471216 (1984-09-01), Herve
patent: 4484067 (1984-11-01), Obrecht
patent: 4510382 (1985-04-01), Walter
patent: 4518852 (1985-05-01), Stockburger et al.
patent: 4529870 (1985-07-01), Chaum
patent: 4544833 (1985-10-01), Ugon
patent: 4549075 (1985-10-01), Saada et al.
patent: 4672182 (1987-06-01), Hirokawa
patent: 4684791 (1987-08-01), Bito
"Smart Cards", Davies, D. W., International Conference on Secure Communications Systems, Feb. 22-23, 1984.

Affiliated with

Also associated with

Rating

Method and apparatus for certifying services obtained using a po 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 apparatus for certifying services obtained using a po, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for certifying services obtained using a po will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1197349