Method of authenticating a terminal in a transaction execution s

Details Method of authenticating a terminal in a transaction execution s Method of authenticating a terminal in a transaction execution s

1994-02-17

1995-12-12

Buczinski, Stephen C.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

34082534, H04K 100, H04L 900

Patent

active

054757568

ABSTRACT:
The invention provides for a method of authenticating to a user or customer a terminal, such as an automatic teller machine, in a transaction execution system. The terminal is authenticated by a central host using cryptographic techniques, and a personal security phrase is sent from the host to the terminal. A message, incorporating the personal security phrase, is communicated to the customer by the terminal, thereby indicating that the terminal is legitimate. The terminal is authenticated to the customer prior to his entering any secret or confidential information, such as a personal identification number, into the terminal.

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