arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1902.05623cs.CR
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使用智能合约分散发布自涌现数据

Decentralized Release of Self-emerging Data using Smart Contracts

Chao Li, Balaji Palanisamy

摘要:

在大数据时代,在未来某个时间点发布受保护的敏感数据对于各种应用程序至关重要。这种自发数据发布要求数据在规定的数据发布时间之前受到保护,并且在发布时间自动发布给接收方,即使数据发送方离线。虽然直接的集中式方法提供了问题的基本解决方案,但不幸的是,它们仅限于单个信任点,并且涉及单个控制点。本文介绍了在以太坊区块链网络中使用智能合约支持自涌现数据的去中心化技术。我们设计了一个可信的和可执行的智能合约,以支持自我涌现的数据发布。智能合约采用一组以太坊节点共同遵循所提出的定时发布服务协议,允许参与节点获得服务用户支付的报酬,将问题建模为不完全信息的扩展形式博弈,以防止可能的对抗攻击,包括一些节点破坏私有数据(丢弃攻击)或在释放时间之前秘密地释放私有数据(提前释放攻击)。我们通过严格的分析和实验评估证明了所提出的技术的有效性和攻击恢复能力。我们在以太坊官方测试网络上的实现和实验评估证明了与所提出的方法相关的低货币成本和低时间开销,并验证了其有保证的安全性。

英文摘要:

In the age of Big Data, releasing protected sensitive data at a future point in time is critical for various applications. Such self-emerging data release requires the data to be protected until a prescribed data release time and be automatically released to the recipient at the release time, even if the data sender goes offline. While straight-forward centralized approaches provide a basic solution to the problem, unfortunately they are limited to a single point of trust and involve a single point of control. This paper presents decentralized techniques for supporting self-emerging data using smart contracts in Ethereum blockchain networks. We design a credible and enforceable smart contract for supporting self-emerging data release. The smart contract employs a set of Ethereum peers to jointly follow the proposed timed-release service protocol allowing the participating peers to earn the remuneration paid by the service users.We model the problem as an extensive-form game with imperfect information to protect against possible adversarial attacks including some peers destroying the private data (drop attack) or secretly releasing the private data before the release time (release-ahead attack). We demonstrate the efficacy and attack-resilience of the proposed techniques through rigorous analysis and experimental evaluation. Our implementation and experimental evaluation on the Ethereum official test network demonstrate the low monetary cost and the low time overhead associated with the proposed approach and validate its guaranteed security properties.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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