Data-locking system

Details Data-locking system Data-locking system

1990-06-20

1991-06-25

Tarcza, Thomas H.

Cryptography

Cryptanalysis

380 3, 380 25, H04L 900

Patent

active

050273957

ABSTRACT:
A data-locking system for generating an application, includes a data entry device, a video display screen, a storage medium, and a system for locking data in the storage medium. The video display screen allows for the display of inputted information in a predetermined application format comprising an integrated arrangement of critical and non-critical data fields. The data-locking system has circuitry for generating first and second records from the inputted information, as well as circuitry for generating a unique generator key number for encrypting the first record and circuitry for generating a data-lock code number and a time stamp number. When using the data-locking system, the inputted information in the critical data fields of the predetermined application format, once data-locked, cannot be changed.

REFERENCES:
patent: 4588991 (1986-05-01), Atalla
patent: 4905277 (1990-02-01), Nakamura
patent: 4947318 (1990-08-01), Mineo
patent: 4959861 (1990-09-01), Howlette

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