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08/31/2023
Accountable Safety Implies Finality
Motivated by proof-of-stake (PoS) blockchains such as Ethereum, two key ...
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08/09/2023
Optimal Flexible Consensus and its Application to Ethereum
Classic BFT consensus protocols guarantee safety and liveness for all cl...
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03/16/2023
Security of Blockchains at Capacity
Given a network of nodes with certain communication and computation capa...
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09/18/2022
Proofs of Proof-of-Stake with Sublinear Complexity
Popular Ethereum wallets (e.g., MetaMask) entrust centralized infrastruc...
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09/07/2022
No More Attacks on Proof-of-Stake Ethereum?
The latest message driven (LMD) greedy heaviest observed sub-tree (GHOST...
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03/02/2022
Two Attacks On Proof-of-Stake GHOST/Ethereum
We present two attacks targeting the Proof-of-Stake (PoS) Ethereum conse...
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11/24/2021
Securing Proof-of-Stake Nakamoto Consensus Under Bandwidth Constraint
Satoshi Nakamoto's Proof-of-Work (PoW) longest chain (LC) protocol was a...
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11/24/2021
Information Dispersal with Provable Retrievability for Rollups
The ability to verifiably retrieve transaction or state data stored off-...
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10/19/2021
Three Attacks on Proof-of-Stake Ethereum
Recently, two attacks were presented against Proof-of-Stake (PoS) Ethere...
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05/13/2021
The Availability-Accountability Dilemma and its Resolution via Accountability Gadgets
Byzantine fault tolerant (BFT) consensus protocols are traditionally dev...
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10/20/2020
Snap-and-Chat Protocols: System Aspects
The availability-finality dilemma says that blockchain protocols cannot ...
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09/10/2020
Ebb-and-Flow Protocols: A Resolution of the Availability-Finality Dilemma
The CAP theorem says that no blockchain can be live under dynamic partic...
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04/13/2020
Successive Cancellation Inactivation Decoding for Modified Reed-Muller and eBCH Codes
A successive cancellation (SC) decoder with inactivations is proposed as...
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10/04/2019
Boomerang: Redundancy Improves Latency and Throughput in Payment Networks
In multi-path routing schemes for payment-channel networks, Alice transf...
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10/02/2019
Ternary Quantized Polar Code Decoders: Analysis and Design
The performance of short polar codes under successive cancellation (SC) ...
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08/25/2019
Babel Storage: Uncoordinated Content Delivery from Multiple Coded Storage Systems
In future content-centric networks, content is identified independently ...
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02/27/2019