OFFLINE METHODS FOR AUTHENTICATION IN A CLIENT/SERVER AUTHENTICATION SYSTEM

摘要

A method for providing authentication of a user of a recipient unit when the recipient unit is off-line includes storing one or a plurality of one-time challenge-reply sets based on an on-line communication with a sender unit. In one example, each of the one-time challenge-reply sets includes at least a one-time challenge-reply pair for use in off-line authentication of the user for a particular resource available through the recipient unit. When the user is offline, the method includes selecting at least one of the plurality of stored one-time challenge-reply sets for off-line authentication of the user for the particular resource available through the recipient unit. The one-time challenge-reply sets may be associated with an article.

主权项

1. A method for providing authentication of a user of a recipient unit, comprising:
storing, at the recipient unit, at least one one-time challenge-reply set used in authenticating the user when the recipient unit is online with a sender unit wherein the at least one one-time challenge-reply set is a time independent authentication challenge-reply set; and using the stored one-time time independent challenge-reply set to authenticate the user when the recipient unit is off-line.