Patent ID: 7814203
Filing Date: 2010-10-12
Classification: G06F,H04K,H04L

Abstract:
1. A method in an authentication unit of providing an access device with access to protected information, wherein an authentication server associated with the authentication unit has a plurality of addresses assigned to the authentication server, wherein the assigned addresses are known to authorized access devices but not to others, said method comprising: receiving a multi-character password from the access device at a first address assigned to the authentication server, wherein the password characters are received in a plurality of packets, and each packet is separated in time from a preceding packet by a predefined time interval mutually agreed upon by the access device and the authentication unit and without regard to any timing characteristics with which the access device received the password characters; verifying by the authentication unit, the password characters and time intervals; sending to the access device in response to verifying the password characters and time intervals, an index value identifying a second address from the plurality of addresses assigned to the authentication server; and providing the access device with access to the protected information only if the access device subsequently requests access from the authentication server utilizing the second address assigned to the authentication server.