The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2000
Filed:
Oct. 06, 1997
SamSung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
An user authentication system for authenticating a user using an IC card in conjunction with a portable terminal used to generate a one-time password and a server used to generate a corresponding one-time password for user authentication. The IC card contains a secret key for generating a one-time password and predetermined random numbers. The portable terminal contains a card receiver for receiving the IC card, a random number memory for reading and storing, and then deleting the random numbers of the IC card, a first password generator for generating a one-time password by the secret key of the IC card and the random number, a first random number changer for changing the random number stored in the random number memory into a predetermined value and storing the changed value in the random number storing portion, and a display for displaying the processed results of the terminal and the server. The server includes a secret key memory for storing a secret key and a random number, a second password generator for generating a one-time password, a second random number changer for storing a random number value identical to the random number value of the terminal, a password receiver for receiving the one-time password of the terminal, a password verifier for verifying the password to authenticate the user. As a result, it is possible to raise the security level by using a one-time password in which a different password is used each time a user is authenticated, and to save costs by generating a one-time password for various services with a single terminal.