Computer Science/Discrete Mathematics Seminar II

Byzantine Broadcast in $\tilde{O}(n^2)$ Communication

We present a deterministic $n$-party Byzantine broadcast protocol secure against $t<n$ faults, with communication complexity $O(n^2\log^4(n)\lambda)$ and $O(t)$ rounds (where $\lambda$ is a security parameter), improving upon the seminal Dolev--Strong protocol from 1983.

Joint work with Jovan Komatovic and Ling Ren. This result was found via extensive discussion and collaboration with ChatGPT dot.

Date & Time

November 24, 2026 | 10:30am – 12:30pm
Add to calendar 11/24/2026 10:30 11/24/2026 12:30 Computer Science/Discrete Mathematics Seminar II use-title Topic: Byzantine Broadcast in $\tilde{O}(n^2)$ Communication Speakers: Yuval Efron, Institute for Advanced Study More: https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-seminar-ii-632 We present a deterministic $n$-party Byzantine broadcast protocol secure against $t<n$ faults, with communication complexity $O(n^2\log^4(n)\lambda)$ and $O(t)$ rounds (where $\lambda$ is a security parameter), improving upon the seminal Dolev--Strong protocol from 1983. Joint work with Jovan Komatovic and Ling Ren. This result was found via extensive discussion and collaboration with ChatGPT dot. Simonyi 101 and Remote Access a7a99c3d46944b65a08073518d638c23

Location

Simonyi 101 and Remote Access

Speakers

Yuval Efron, Institute for Advanced Study