Teechain

Lind, Joshua; Naor, Oded; Eyal, Ittay; Kelbert, Florian; Pietzuch, Peter; Sirer, Emin Gün

doi:10.1145/3211890.3211904

Cited by 34 publications

(7 citation statements)

References 1 publication

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“…TEE provides a promising hardware-based alternative for achieving secure computation with a CPUlevel performance, and thus bridges the gap between academic research and industrial adoption of secure computation. Trusted hardware provides a powerful abstraction for building secure systems and can be applied to many potential applications, such as machine learning algorithms [81,97,98,102,106,142], cloud computing [15,33,94,122,126,141], blockchain [18,22,87,159], network traffic analysis [47], scientific computation [130], data analytics [41,75,118,164,165], and privacy-preserving COVID-19 contact tracing [73].…”

Section: Our Contributionsmentioning

confidence: 99%

A Survey of Secure Computation Using Trusted Execution Environments

Li¹,

Yang²,

Xiang³

et al. 2023

Preprint

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As an essential technology underpinning trusted computing, the trusted execution environment (TEE) allows one to launch computation tasks on both on-and off-premises data while assuring confidentiality and integrity. This article provides a systematic review and comparison of TEE-based secure computation protocols. We first propose a taxonomy that classifies secure computation protocols into three major categories, namely secure outsourced computation, secure distributed computation and secure multi-party computation. To enable a fair comparison of these protocols, we also present comprehensive assessment criteria with respect to four aspects: setting, methodology, security and performance. Based on these criteria, we review, discuss and compare the state-of-the-art TEE-based secure computation protocols for both general-purpose computation functions and special-purpose ones, such as privacy-preserving machine learning and encrypted database queries. To the best of our knowledge, this article is the first survey to review TEE-based secure computation protocols and the comprehensive comparison can serve as a guideline for selecting suitable protocols for deployment in practice. Finally, we also discuss several future research directions and challenges.CCS Concepts: • Security and privacy → Tamper-proof and tamper-resistant designs; Trust frameworks; Privacy-preserving protocols; Management and querying of encrypted data.

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Section: Our Contributionsmentioning

confidence: 99%

A Survey of Secure Computation Using Trusted Execution Environments

Li¹,

Yang²,

Xiang³

et al. 2023

Preprint

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“…Lind et al [17] relax the synchrony assumption but require a trusted execution environment (TEE). Such a solution cannot be used to solve our problem as it would require trusting a third-party, often represented as the manufacturer of this TEE.…”

Section: Other Cross-chain Technologiesmentioning

confidence: 99%

Cross-chain payment protocols with success guarantees

2023

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In this paper, we consider the problem of cross-chain payment whereby customers of different escrows—implemented by a bank or a blockchain smart contract—successfully transfer digital assets without trusting each other. Prior to this work, cross-chain payment problems did not require this success, or any form of progress. We introduce a new specification formalism called Asynchronous Networks of Timed Automata to formalise such protocols. We present the first cross-chain payment protocol that ensures termination in a bounded amount of time and works correctly in the presence of clock drift. We then demonstrate that it is impossible to solve this problem without assuming synchrony, in the sense that each message is guaranteed to arrive within a known amount of time. Yet, we solve an eventually terminating weaker variant of this problem, where success is conditional on the patience of the participants, without assuming synchrony, and in the presence of Byzantine failures. We also discuss the relation with the recently defined cross-chain deals.

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“…Thereby, 12,24–26 are proposed successively. Since then, Decker et al proposed the concept of bidirectional payment channel, 27 to improve the transaction execution efficiency of PCN and keep the network in a state of dynamic balance, PCN improvement is expanded from the one‐way payment channel 28,29 to the bidirectional payment channel 1,6,25 . These PCN routing methods that exist in different payment scenarios continue to make breakthroughs in throughput, 1,21 transaction execution efficiency, 6,30,31 channel capacity balance 1,32,33 and transaction security 14,15,34,35 …”

Section: Related Workmentioning

confidence: 99%

Improving transaction succeed ratio in payment channel networks via enhanced node connectivity and balanced channel capacity

Guo

Wang

Liang

et al. 2022

Int J of Intelligent Sys

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Payment channel networks (PCNs) are generally regarded as one of the most effective and promising scalability solutions for blockchain-based cryptocurrency systems, but suffer the issues of low success ratio and long confirmation latency in processing transactions. In this paper, we demonstrate the feasibility of tremendously increasing the success ratio of transactions and improving their execution efficiency by enhancing network nodes' connectivity and enforcing a balanced network channel capacity. To implement such ideas, multiple designs have been made. First, to extent nodes connectivity, we transform the nearlylinear ordered nodes into a star payment structured typology, and design an incentive financing mechanism to restructure a new landmark routing typology design. Especially, for the marginalized or dissociative nodes, we utilize specific financial loan strategies to encourage them to (re)join the system. Besides, we propose the Power Atomic Multi-Path Payments (Power AMP) traffic distribution method, which hierarchically allocates the bottleneck's currentlyavailable capacity (to replace the random or equal division used in traditional AMP), and thus archives a balanced traffic usage. With such efforts, we improve the transaction success ratio and efficiency of

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Teechain

Cited by 34 publications

References 1 publication

A Survey of Secure Computation Using Trusted Execution Environments

A Survey of Secure Computation Using Trusted Execution Environments

Cross-chain payment protocols with success guarantees

Improving transaction succeed ratio in payment channel networks via enhanced node connectivity and balanced channel capacity

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