System and method for utilizing information in publicly broadcast signals for shared secret purposes
First Claim
1. A system for utilizing information in publicly broadcast information as a synchronization source for shared secret purposes comprising:
- a token device capable of receiving publicly broadcast information, the token device generating responses based on the publicly broadcast information; and
a server capable of receiving publicly broadcast information and receiving responses from the token device, the server generating challenges based on the publicly broadcast information and verifying the responses from the token to authenticate the token.
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Accused Products
Abstract
A system and method for utilizing information in publicly broadcast signals is provided. Information in publicly broadcast signals is utilized as a synchronization source for shared secret purposes, such as challenge and response. Such information may relate to time. Suitable publicly broadcast information may include GPS and atomic clock information. The system includes a token and a server that are capable of generating responses based on broadcast information and other information. The token and server must be able to receive publicly broadcast information via known methods. Both the token and server receive information from a designated source of publicly broadcast signals. The information received by the token is identical to the information received by the server and can be used as a challenge. The token generates a response to the challenge. The token'"'"'s response is provided to the server. The server can verify that the response to the challenge received from the token is in fact generated by that unique token. If the response to the challenge is verified by the authentication server, the token is identified and authenticated.
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Citations
15 Claims
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1. A system for utilizing information in publicly broadcast information as a synchronization source for shared secret purposes comprising:
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a token device capable of receiving publicly broadcast information, the token device generating responses based on the publicly broadcast information; and
a server capable of receiving publicly broadcast information and receiving responses from the token device, the server generating challenges based on the publicly broadcast information and verifying the responses from the token to authenticate the token. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for utilizing publicly broadcast information as a synchronization source for shared secret purposes comprising:
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publicly broadcasting information;
providing a token device capable of receiving publicly broadcast information and capable of generating responses based on the publicly broadcast information;
generating responses based on the publicly broadcast information;
providing a server capable of receiving publicly broadcast information and capable of generating challenges based on the publicly broadcast information;
transmitting responses to the server;
generating challenges based on the publicly broadcast information;
comparing responses to challenges for verifying the responses to authenticate the token device. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification