Sorry, you need to enable JavaScript to visit this website.

facebooktwittermailshare

DEFENDING AGAINST PACKET-SIZE SIDE-CHANNEL ATTACKS IN IOT NETWORKS

Abstract: 

Motivated by privacy issues in the Internet of Things systems, we generalize a proposed privacy-preserving packet obfuscation scheme to guarantee differential privacy. We propose a locally differentially private packet obfuscation mechanism as a defense against packet-size side-channel attacks in IoT networks. We formulate the problem as an optimization over a conditional probability distribution (channel) between the original and obfuscated packet sizes and show that the optimal set of obfuscated packet sizes is a strict subset of the set of original packet sizes. We study the optimal mechanisms for minimizing the (average or min-max) bandwidth overhead subject to a privacy constraint by solving the corresponding (linear or convex) program. We demonstrate our methods on synthetic and real data to illustrate privacy-bandwidth tradeoffs in different settings. Systems with many bandwidth-intensive devices can easily mask low-bandwidth devices. For data collected from actual smart home IoT devices, we show how the packet size distributions become increasingly indistinguishable as the level of privacy protection increases. The proposed mechanism highlights the possibility for bandwidth-constrained users to optimally tune their privacy preferences and trade off privacy with bandwidth.

up
0 users have voted:

Paper Details

Authors:
Sijie Xiong, Anand D. Sarwate, Narayan B. Mandayam
Submitted On:
14 April 2018 - 3:11pm
Short Link:
Type:
Poster
Event:
Presenter's Name:
Sijie Xiong
Paper Code:
3268
Document Year:
2018
Cite

Document Files

IEEE_ICASSP2018_POSTER

(245)

Subscribe

[1] Sijie Xiong, Anand D. Sarwate, Narayan B. Mandayam, "DEFENDING AGAINST PACKET-SIZE SIDE-CHANNEL ATTACKS IN IOT NETWORKS", IEEE SigPort, 2018. [Online]. Available: http://sigport.org/2769. Accessed: Jun. 15, 2019.
@article{2769-18,
url = {http://sigport.org/2769},
author = {Sijie Xiong; Anand D. Sarwate; Narayan B. Mandayam },
publisher = {IEEE SigPort},
title = {DEFENDING AGAINST PACKET-SIZE SIDE-CHANNEL ATTACKS IN IOT NETWORKS},
year = {2018} }
TY - EJOUR
T1 - DEFENDING AGAINST PACKET-SIZE SIDE-CHANNEL ATTACKS IN IOT NETWORKS
AU - Sijie Xiong; Anand D. Sarwate; Narayan B. Mandayam
PY - 2018
PB - IEEE SigPort
UR - http://sigport.org/2769
ER -
Sijie Xiong, Anand D. Sarwate, Narayan B. Mandayam. (2018). DEFENDING AGAINST PACKET-SIZE SIDE-CHANNEL ATTACKS IN IOT NETWORKS. IEEE SigPort. http://sigport.org/2769
Sijie Xiong, Anand D. Sarwate, Narayan B. Mandayam, 2018. DEFENDING AGAINST PACKET-SIZE SIDE-CHANNEL ATTACKS IN IOT NETWORKS. Available at: http://sigport.org/2769.
Sijie Xiong, Anand D. Sarwate, Narayan B. Mandayam. (2018). "DEFENDING AGAINST PACKET-SIZE SIDE-CHANNEL ATTACKS IN IOT NETWORKS." Web.
1. Sijie Xiong, Anand D. Sarwate, Narayan B. Mandayam. DEFENDING AGAINST PACKET-SIZE SIDE-CHANNEL ATTACKS IN IOT NETWORKS [Internet]. IEEE SigPort; 2018. Available from : http://sigport.org/2769