A physical-layer authentication scheme based on hash method

Abstract

Existing physical-layer challenge-response authentication schemes are under the threat of identity key leakages. To solve this problem, this paper proposes a physical-layer authentication scheme based on hash method. The frequency response curve of the received signal in physical layer is used as the authentication challenge and bound with the identity key stored in upper layer to generate an authentication response by a signal-level hash function referred from 3D curve matching. Binary hypothesis test is employed to verify the identity and the corresponding wireless channel to achieve an enhanced authentication. The proposed scheme can achieve a detection rate of 100% with the false alarm rate below 10−3 under the SNR of 12dB.