Mutual authentication system

Details Mutual authentication system Mutual authentication system

1991-01-30

1993-07-06

LaRoche, Eugene R.

Registers

Systems controlled by data bearing records

Credit or identification card systems

235382, 235492, 34082534, 380 23, G06F 1500

Patent

active

052256642

ABSTRACT:
When mutual authentication is effected between an IC card and a host device, key data and random number data transmitted from the host device are immediately subjected to the encrypting process without storing the same into a RAM of the IC card, and only authentication data obtained as the result of the encrypting process is stored. As a result, the memory area in the RAM can be saved and effectively used.

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