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Landmine explosions 'underline need for Zaporizhzhia protection agreement'(图)
《扎波罗热保护协定》 国际原子能机构 核电站
2023/4/17
Although Byzantine Agreement (BA) has been studied for three decades, perhaps somewhat surprisingly, there still exist significant gaps in our understanding regarding its round complexity. First, alth...
On the Round Complexity of Randomized Byzantine Agreement
Byzantine agreement lower bound round complexity
2019/7/31
We prove lower bounds on the round complexity of randomized Byzantine agreement (BA) protocols, bounding the halting probability of such protocols after one and two rounds.
Statement on NSF and SpaceX Radio Spectrum Coordination Agreement
NSF SpaceX Radio Spectrum Coordination Agreement
2019/10/28
In late May, SpaceX launched its first 60 Starlink satellites into orbit. SpaceX plans to launch a much larger satellite constellation into low-Earth orbit with the goal of providing terrestrial inter...
In this paper, we introduce \emph{Polygraph}, the first accountable Byzantine consensus algorithm for partially synchronous systems. If among nn users tare malicious then it ensures consensus,...
Practical Supersingular Isogeny Group Key Agreement
Group key agreement isogenies post-quantum cryptography
2019/4/3
We present the first quantum-resistant nn-party key agreement scheme based on supersingular elliptic curve isogenies. We show that the scheme is secure against quantum adversaries, by providing a secu...
A Note on Key Agreement and Non-Interactive Commitments
Non-interactive commitments key agreement
2019/3/13
We observe that any key agreement protocol satisfying perfect completeness, regardless of its round complexity, can be used to construct a non-interactive commitment scheme.
Continuous Key Agreement with Reduced Bandwidth
Double Ratchet Protocol Continuous Key Agreement Post Quantum Cryptography
2019/1/29
Continuous Key Agreement (CKA) is a two-party procedure used by Double Ratchet protocols (e. g., Signal). This is a continuous and synchronous protocol that generates a fresh key for every sent/receiv...