Lightweight Authentication Method and System for Low-cost Devices without Pseudorandom Number Generator Background of the Invention

An algorithm or an authentication system for a loW-cost authenticating device such as a radio frequency identi?cation (RFID) tag, or a sensor node are provided, by Which authen tication is processed e?iciently Without requiring a random number. A claimant entity attempting to be authenticated and a verifying entity to authenticate the claimant entity, share a plurality of secret keys so that authentication is processed as the claimant entity responds to a challenge by the verifying entity. The verifying entity and the claimant entity perform authentication using Learning Parity With Noise (LPN) prob lem. The claimant entity may generate an encrypted value for use in the authentication, using a basic Boolean Exclusive OR and a logical AND operations.