07373515 is referenced by 111 patents and cites 9 patents.

A suspect user (110) seeks access to a network resource from an access authority (150) utilizing a passcode received from an authentication authority (130). Initially, an ID of a device is bound with a PIN, the device ID is bound with a private key of the device, and the device ID is bound with a user ID that has been previously bound with a password of an authorized user. The device ID is bound with the user ID by authenticating the user ID using the password. Thereafter, the suspect user communicates the device ID and the PIN from the device over an ancillary communications network (112); the authentication authority responds back over the ancillary communications network with a passcode encrypted with the public key of the device; and the suspect user decrypts and communicates over a communications network (114) the passcode with the user ID to the access authority.

Title
Multi-factor authentication system
Application Number
10/491949
Publication Number
7373515 (B2)
Application Date
October 9, 2001
Publication Date
May 13, 2008
Inventor
Eric Shoemaker
Roswell
GA, US
William N Owen
Atlanta
GA, US
Agent
James D Wright
Chad D Tillman
Tillman Wright PLLC
Assignee
Wireless Key Identification Systems
GA, US
IPC
G06F 9/00
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