04281215 is referenced by 62 patents and cites 8 patents.

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.

Title
Method and apparatus for securing data transmissions
Application Number
5/902444
Publication Number
4281215
Application Date
May 3, 1978
Publication Date
July 28, 1981
Inventor
Martin M Atalla
Menlo Park
CA, US
Agent
A C Smith
Assignee
Atalla Technovations
CA, US
IPC
H04L 9/00
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