Person
Suhas Diggavi
This person is no longer with EPFL
Related publications (105)
Community-Aware Group Testing
Pavlos Nikolopoulos, Christina Fragouli, Suhas Diggavi, Sundara Rajan Srinivasavaradhan
Group testing is a technique that can reduce the number of tests needed to identify infected members in a population, by pooling together multiple diagnostic samples. Despite the variety and importance of prior results, traditional work on group testing ha ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2023Group testing for connected communities
Pavlos Nikolopoulos, Christina Fragouli, Suhas Diggavi, Sundara Rajan Srinivasavaradhan
In this paper, we propose algorithms that leverage a known community structure to make group testing more efficient. We consider a population organized in disjoint communities: each individual participates in a community, and its infection probability depe ...
MICROTOME PUBLISHING2021An LP Characterization of the Secret-message Capacity of Three Erasure Networks With Feedback
Christina Fragouli, Suhas Diggavi, László Czap, Vinod Malathidevi Prabhakaran
This paper presents exact capacity characterizations for the case, when a principal, Alice, wants to securely send a message to another principal, Bob, over three network configurations: the parallel edges network, the V-network, and the triangle network. ...
Ieee-Inst Electrical Electronics Engineers Inc2016Hierarchical Routing Over Dynamic Wireless Networks
Matthias Grossglauser, Suhas Diggavi, Dominique Florian Tschopp
The topology of a mobile wireless network changes over time. Maintaining routes between all nodes requires the continuous transmission of control information, which consumes precious power and bandwidth resources. Many routing protocols have been developed ...
Wiley-Blackwell2015Secret Communication Over Broadcast Erasure Channels With State-Feedback
Christina Fragouli, Suhas Diggavi, László Czap, Vinod Malathidevi Prabhakaran
We consider a 1-to-K communication scenario, where a source transmits private messages to K receivers through a broadcast erasure channel, and the receivers feedback strictly, causally, and publicly their channel states after each transmission. We explore ...
Ieee-Inst Electrical Electronics Engineers Inc2015Secure Network Coding With Erasures and Feedback
Christina Fragouli, Suhas Diggavi, László Czap, Vinod Malathidevi Prabhakaran
Secure network coding assumes that the underlying network channels are error-free; thus, if our channels introduce errors, we need to first apply a channel code to correct them, and then build security on top of the resulting error-free network. In this pa ...
Ieee-Inst Electrical Electronics Engineers Inc2015Triangle Network Secrecy
Christina Fragouli, Suhas Diggavi, László Czap, Vinod Malathidevi Prabhakaran
We characterize the secret message capacity of the triangle network, that consists of a source, a relay and a destination connected through orthogonal erasure channels. A passive eavesdropper, Eve, wiretaps any one of the three channels. The source and the ...
2014Triangle Network Secrecy
Christina Fragouli, Suhas Diggavi, László Czap, Vinod Malathidevi Prabhakaran
We characterize the secret message capacity of the triangle network, that consists of a source, a relay and a destination connected through orthogonal erasure channels. A passive eavesdropper, Eve, wiretaps any one of the three channels. The source and the ...
Ieee2014Creating Secrets out of Erasures
Christina Fragouli, Suhas Diggavi, Panagiotis Kostopoulos
Current security systems often rely on the adversary's computational limitations. Wireless networks offer the opportunity for a different, complementary kind of security, which relies on the adversary's limited network presence (i.e., that the adversary ca ...
2013Exchanging Pairwise Secrets Efficiently
Christina Fragouli, Suhas Diggavi, Iris Safaka
We consider the problem where a group of wireless nodes, connected to the same broadcast domain, want to create pairwise secrets, in the presence of an adversary Eve, who tries to listen in and steal these secrets. Existing solutions assume that Eve cannot ...
Institute of Electrical and Electronics Engineers Inc.2013