Security transaction system for financial data

摘要

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.