TITLE:
Multilayer Authentication for Communication Systems Based on Physical-Layer Attributes
AUTHORS:
Ahmed Refaey, Weikun Hou, Khaled Loukhaoukha
KEYWORDS:
Physical Layer Authentication, Channel Impulse Response, TCP, Hypothesis Testing
JOURNAL NAME:
Journal of Computer and Communications,
Vol.2 No.8,
June
26,
2014
ABSTRACT: In this paper, a
multilayer security solution is introduced, in order to accord the required
end-to-end security blanket to the heterogeneous networks by considering the
properties used by authentication at the physical-layer in transport-layer
authentication. In particular, after achieving an authentication level based on
the estimated channel impulse response (CIR) at the physicallayer, these CIRs
are exploited at the transport layer, adding more randomness to the generated
sequence numbers used in the 3-Way TCP/IP handshake authentication.
Furthermore, in order to enhance the authentication at the physical layer, the
estimated CIR is quantized into two domains: amplitude and phase. The
quantizer’s output is used to differentiate between the legitimate transmitters
and intruders using binary hypothesis testing. Eventually, generating a unique
sequence numbers is granted due to the increased randomness offered by the
quantizer outputs. In order to verify the effectiveness of the proposed scheme,
simulation results are shown based on an orthogonal frequency division
multiplexing (OFDM) system. Additionally, a logarithmic likelihood ratio test
is used to evaluate the authentication performance.