Authentication system
AssigneeU.S. Philips Corporation
InventorWei J. Tang
Life of this patent
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Abstract
An authentication system is disclosed that includes at least one station and a host. Each station having a memory for storing a plurality of authentication items. An authentication control element, such as a key, is constructed from a part of the authentication items which is selected for each message. An authenticator authenticates the message substantially under the control of the authentication control element constructed for the message. The authenticated message is sent to the host. The host having a memory for storing the authentication items of each station. The authentication control element is determined from the received authenticated message. A verifier is used for, under control of the authentication control element, verifying the authenticity of the received message.
Claims10
An authentication system comprising at least one station and a host;
- each station including
- authentication means for, based upon an authentication algorithm, authenticating a message,
- communication means for sending the authenticated message to the host,
- a memory for storing a plurality of authentication items,
- a constructing means for constructing for each message a corresponding authentication control element, the constructing means being operable to select a part of the plurality of authentication items and to construct the authentication control element for the message, wherein the authentication algorithm uses the authentication control element to generate an authenticated message;
- and
- the host including
- communication means for receiving an authenticated message,
- a memory for storing the plurality of authentication items of each station,
- constructing means for constructing the authentication control element within each received authenticated message,
- verification means for verifying the authenticity of the received message by checking the authentication control element constructed from the received message with the stored plurality of authentication items corresponding to a station which sent the message.
Dependencies are inferred from the claim text.