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首页> 外文期刊>IEEE Transactions on Parallel and Distributed Systems >Balancing Performance, Accuracy, and Precision for Secure Cloud Transactions
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Balancing Performance, Accuracy, and Precision for Secure Cloud Transactions

机译：平衡性能，准确性和精确度，以实现安全的云事务

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摘要

In distributed transactional database systems deployed over cloud servers, entities cooperate to form proofs of authorizations that are justified by collections of certified credentials. These proofs and credentials may be evaluated and collected over extended time periods under the risk of having the underlying authorization policies or the user credentials being in inconsistent states. It therefore becomes possible for policy-based authorization systems to make unsafe decisions that might threaten sensitive resources. In this paper, we highlight the criticality of the problem. We then define the notion of trusted transactions when dealing with proofs of authorization. Accordingly, we propose several increasingly stringent levels of policy consistency constraints, and present different enforcement approaches to guarantee the trustworthiness of transactions executing on cloud servers. We propose a Two-Phase Validation Commit protocol as a solution, which is a modified version of the basic Two-Phase Validation Commit protocols. We finally analyze the different approaches presented using both analytical evaluation of the overheads and simulations to guide the decision makers to which approach to use.
机译：在部署在云服务器上的分布式事务数据库系统中，实体进行协作以形成授权证明，该证明由已认证凭据的集合证明是合理的。这些证据和凭证可能会在较长的时间段内进行评估和收集，存在潜在的授权策略或用户凭证处于不一致状态的风险。因此，基于策略的授权系统有可能做出可能威胁敏感资源的不安全决策。在本文中，我们强调了该问题的严重性。然后，在处理授权证明时，我们定义了受信任交易的概念。因此，我们提出了几种越来越严格的策略一致性约束级别，并提出了不同的实施方法来保证在云服务器上执行的交易的可信赖性。我们提出了一个两阶段验证提交协议作为解决方案，它是基本两阶段验证提交协议的修改版本。最后，我们使用间接费用的分析评估和模拟来分析提出的不同方法，以指导决策者使用哪种方法。

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