Method and apparatus for securing data transmissions

Details Method and apparatus for securing data transmissions Method and apparatus for securing data transmissions

1978-05-03

1981-07-28

Birmiel, Howard A.

Telegraphy

Systems

Printing

235380, 340149R, H04L 900

Patent

active

042812151

ABSTRACT:
A method and apparatus are provided for improving the security of data transmissions between stations. The method obviates the need for transmitting user-identification information such as personal identification number (PIN) from station to station, e.g., from the station utilized by the user to enter his PIN and initiate a transaction, to the station that processes the transaction. Also, for added security, the method provides for encryption (encoding) and decryption (decoding) of data during a transaction using encryption and decryption keys produced from different (independent) PINs. The apparatus includes at least one irreversible algorithm module, a random number generator and at least one data file (e.g., disc or magnetic tape storage). The apparatus also includes a comparator or, alternatively, an encoding algorithm module and a matching decoding algorithm module.

REFERENCES:
patent: 3654604 (1972-04-01), Crafton
patent: 3938091 (1976-02-01), Atalla et al.
patent: 3956615 (1976-05-01), Anderson
patent: 3985998 (1976-10-01), Crafton
patent: 4004089 (1977-01-01), Richard et al.
patent: 4025760 (1977-05-01), Trenkamp
patent: 4048475 (1977-09-01), Yoshida
patent: 4123747 (1978-10-01), Lancto et al.
"New Directions in Cryptography", Diffie et al., IEEE, Transactions on Information Theory, vol. IT-22, No. 6, Nov. 76, pp. 644-654.

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