Removable media for password based authentication in a distribut

Details Removable media for password based authentication in a distribut Removable media for password based authentication in a distribut

1997-10-31

2000-05-09

Swann, Tod R.

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

H04L 932

Patent

active

060617993

ABSTRACT:
A portable medium containing client process identification information for use with a computer system requiring authentication prior to access thereto includes data identifying the client process and a plurality of data sets, each associated with a password, one of the passwords being designated as current. In one embodiment, the medium contains the passwords while in another embodiment, the medium contains keys at least partially derived from the passwords. The computer system with which the portable medium interfaces determines whether any of the data associated with the passwords matches authentication data previously stored in the computer system and associated with the client process. If a match occurs, the client process is allowed to access the system. If the data upon which access is based is not associated with a current password, the computer system will read the data associated with the current password and update its corresponding authentication data associated with the client process.

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