5 papers · 1 filter
Secret key-distribution over networks with node-based adversarial errors
Reza Sayyari, Michael Langberg
We study the multiple key-cast problem in network coding under active node-based adversaries. In multiple key-cast, a source generates independent secret keys to be securely and re…
Error-Correcting Weakly Constrained Codes: Constructions and Achievable Rates
Prachi Mishra, Sidharth Jaggi, Navin Kashyap +1
We investigate weakly constrained codes, in which specific patterns occur with prescribed frequencies rather than being strictly forbidden as in conventional constrained coding. We…
Secure (Multiple) Key-Cast over Networks: Multiple Eavesdropping Nodes
Reza Sayyari, Michael Langberg
We study the secure multiple key-cast problem over noiseless networks under node-based eavesdroppers, where one or more source nodes participate in the generation of distinct secre…
Switched Feedback for the Multiple-Access Channel
Oliver Kosut, Michael Langberg, Michelle Effros
A mechanism called switched feedback is introduced; under switched feedback, each channel output goes forward to the receiver(s) or back to the transmitter(s) but never both. By st…
Characterizing positive-rate key-cast (and multicast network coding) with eavesdropping nodes
Michael Langberg, Michelle Effros
In multi-source multi-terminal key-dissemination, here called ``key-cast,'' introduced by the authors in [ITW2022], network nodes hold independent random bits, and one seeks a comm…