Lattices for Physical-layer Secrecy: A Computational Perspective

Details Lattices for Physical-layer Secrecy: A Computational Perspective Lattices for Physical-layer Secrecy: A Computational Perspective

2011-09-28

arxiv.org/abs/1109.6276v1

Computer Science

Information Theory

accepted to the Physical Layer Secrecy Workshop at ICC 2011

Scientific paper

In this paper, we use the hardness of quantization over general lattices as the basis of developing a physical layer secrecy system. Assuming that the channel state observed by the legitimate receiver and the eavesdropper are distinct, this asymmetry is used to develop a cryptosystem that resembles the McEliece cryptosystem, designed to be implemented at the physical layer. We ensure that the legitimate receiver observes a specific lattice over which decoding is known to be possible in polynomial-time. while the eavesdropper observes a lattice over which decoding will prove to have the complexity of lattice quantization over a general lattice

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