The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 1989
Filed:
Sep. 13, 1983
John B Griffith, Plantation, FL (US);
Donald F Linton, Pompano Beach, FL (US);
Transaction Security Corporation, Delray Beach, FL (US);
Abstract
A system for a data protection executing financial transactions employing cryptographic techniques. The system comprises an encoded card, which has been initially encrypted using the National Bureau of Standards Data Encryption Standard Algorithm. A subsequent encryption utilizes a private key of a public key cryptosystem is completed resulting in an account number and an uncoded identifier which are placed on the card. The encoded card may be placed in a sender unit which decrypts the public key. The user that enters a personal identifier in the sender unit. The data is transferred to a receiving unit that decrypts the transmitted data utilizing the private key which is unknown to both the user and the sender unit.