Trusted Execution Environments in Byzantine-Tolerant Networks

Title

Trusted Execution Environments in Byzantine-Tolerant Networks

 Author

van Tiggele, Sebastien (TU Delft Electrical Engineering, Mathematics and Computer Science)

Contributor

Decouchant, Jérémie (mentor) ORCID 0000-0001-9143-3984
Langendoen, K.G. (mentor) ORCID 0000-0003-4996-3695

 Degree granting institution

Delft University of Technology

 Programme

Computer Science and Engineering

 Project

CSE3000 Research Project

 Date

2021-06-28

 Abstract

Achieving consensus in a network is one of the most important performance bottlenecks in distributed computing. This paper takes a look at the existing protocols for achieving Byzantine Reliable Broadcast on asynchronous partially connected networks and how these protocols change to leverage the fact that some nodes have access to Trusted Execution Environments. Modeling some nodes to be completely trusted improves the throughput and reduces latency but the impact changes heavily depending on the placement of these nodes. The second, more realistic approach is having all processes use a local trusted subsystem implemented in a TEE. We show that this reduces the upper bound of faulty nodes from f<N/3 to f<N/2 and reducing the amount of messages sent by up to 64\% (N=30, f=5).

 Subject

Byzantine Reliable Broadcast
Partially connected networks
trusted execution environment

 To reference this document use:

http://resolver.tudelft.nl/uuid:e8c034cc-c3ee-4e41-9680-9f0fbfa8603c

 Part of collection

Student theses

 Document type

bachelor thesis

 Rights

© 2021 Sebastien van Tiggele
Files
PDF Research_Paper_Sebastien_5_.pdf 353.81 KB
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