Browse Prior Art Database

Password Input Procedure

IP.com Disclosure Number: IPCOM000107295D
Original Publication Date: 1992-Feb-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Toyonaga, S: AUTHOR

Abstract

Disclosed is a procedure for inputting a password into a computerized device, such as cash dispensers (CDs), automated teller machines (ATMs), etc., without leakage of the password to neighboring people.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 66% of the total text.

Password Input Procedure

       Disclosed is a procedure for inputting a password into a
computerized device, such as cash dispensers (CDs), automated teller
machines (ATMs), etc., without leakage of the password to neighboring
people.

      When a user inputs a password into the computerized device with
a keyboard, push buttons or a touch panel, locally or remotely
(through a telephone network), currently, another person could see
and know the password.

      By utilizing the following procedure, a user can avoid the
leakage of the password.
     1) A computerized device has a display which can be seen only by
the user or a voice receiver which can be heard only by the user.
     2) The computerized device generates a random number, e.g., "5".
     3) The device shows the number at the display or transmits voice
of the number to the voice receiver.
     4) The user calculates a new number with the calculation formula
which the computerized device utilizes, and sends a calculated number
to the computerized device.
        For example, the user adds the random number "5" to the first
digit, "8", of its password, and gets the new number of "3" by
selecting the units digit of a result, "13".
     5) After receiving the result, the computerized device can
calculate the user's password in the reverse method of the above
calculation formula. For example, the device subtracts the random
number "5" from the new number "3" and gets "-2", the...