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Discovery Projects - Grant ID: DP130100336

Title
Discovery Projects - Grant ID: DP130100336
Funding
ARC | Discovery Projects
Contract (GA) number
DP130100336
Start Date
2013/01/01
End Date
2015/12/31
Open Access mandate
no
Organizations
-
More information
http://purl.org/au-research/grants/arc/DP130100336

 

  • Practical Secrecy: Bridging the Gap between Cryptography and Physical Layer Security

    Liu, Shuiyin; Hong, Yi; Viterbo, Emanuele (2013)
    Projects: ARC | Discovery Projects - Grant ID: DP130100336 (DP130100336)
    Current security techniques can be implemented either by requiring a secret key exchange or depending on assumptions about the communication channels. In this paper, we show that, by using a physical layer technique known as artificial noise, it is feasible to protect secret data without any form of secret key exchange and any restriction on the communication channels. Specifically, we analyze how the artificial noise can achieve practical secrecy. By treating the artificial noise as an unsha...

    Guaranteeing Positive Secrecy Capacity with Finite-Rate Feedback using Artificial Noise

    Liu, Shuiyin; Hong, Yi; Viterbo, Emanuele (2014)
    Projects: ARC | Discovery Projects - Grant ID: DP130100336 (DP130100336)
    While the impact of finite-rate feedback on the capacity of fading channels has been extensively studied in the literature, not much attention has been paid to this problem under secrecy constraint. In this work, we study the ergodic secret capacity of a multiple-input multiple-output multiple-antenna-eavesdropper (MIMOME) wiretap channel with quantized channel state information (CSI) at the transmitter and perfect CSI at the legitimate receiver, under the assumption that only the statistics ...

    Unshared Secret Key Cryptography

    Liu, Shuiyin; Hong, Yi; Viterbo, Emanuele (2014)
    Projects: ARC | Discovery Projects - Grant ID: DP130100336 (DP130100336)
    Current security techniques can be implemented with either secret key exchange or physical layer wiretap codes. In this work, we investigate an alternative solution for MIMO wiretap channels. Inspired by the artificial noise (AN) technique, we propose the unshared secret key (USK) cryptosystem, where the AN is redesigned as a one-time pad secret key aligned within the null space between transmitter and legitimate receiver. The proposed USK cryptosystem is a new physical layer cryptographic sc...

    Practical Secrecy using Artificial Noise

    Liu, Shuiyin; Hong, Yi; Viterbo, Emanuele (2013)
    Projects: ARC | Discovery Projects - Grant ID: DP130100336 (DP130100336)
    In this paper, we consider the use of artificial noise for secure communications. We propose the notion of practical secrecy as a new design criterion based on the behavior of the eavesdropper's error probability $P_E$, as the signal-to-noise ratio goes to infinity. We then show that the practical secrecy can be guaranteed by the randomly distributed artificial noise with specified power. We show that it is possible to achieve practical secrecy even when the eavesdropper can afford more anten...

    Artificial Noise Revisited

    Liu, Shuiyin; Hong, Yi; Viterbo, Emanuele (2014)
    Projects: ARC | Discovery Projects - Grant ID: DP130100336 (DP130100336)
    The artificial noise (AN) scheme, proposed by Goel and Negi, is being considered as one of the key enabling technology for secure communications over multiple-input multiple-output (MIMO) wiretap channels. However, the decrease in secrecy rate due to the increase in the number of Eve's antennas is not well understood. In this paper, we develop an analytical framework to characterize the secrecy rate of the AN scheme as a function of Eve's signal-to-noise ratio (SNR), Bob's SNR, the number of ...

    Oblivious Transfer over Wireless Channels

    Ravi, Jithin; Dey, Bikash Kumar; Viterbo, Emanuele (2015)
    Projects: ARC | Discovery Projects - Grant ID: DP130100336 (DP130100336)
    We consider the problem of oblivious transfer (OT) over OFDM and MIMO wireless communication systems where only the receiver knows the channel state information. The sender and receiver also have unlimited access to a noise-free real channel. Using a physical layer approach, based on the properties of the noisy fading channel, we propose a scheme that enables the transmitter to send obliviously one-of-two files, i.e., without knowing which one has been actually requested by the receiver, whil...
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