CDStore:通过融合分散实现可靠、安全和经济高效的云存储
CDStore: Toward Reliable, Secure, and Cost-Efficient Cloud Storage via Convergent Dispersal
摘要:
我们推出的CDStore将用户的备份数据分散到多个云中,提供统一的多云存储解决方案,具有可靠性,安全性和成本效益的保证。CDStore建立在一个名为收敛分散的增强秘密共享方案之上,该方案通过使用确定性内容派生哈希作为秘密共享的输入来支持重复数据删除。我们提出了CDStore的设计,特别是,它如何结合收敛分散与两阶段重复数据删除,以实现带宽和存储节省和强大的侧信道攻击。我们使用局域网和商业云测试平台上的真实工作负载来评估我们的CDStore原型的性能。我们的成本分析还表明,与使用最先进的秘密共享的基准云存储解决方案相比,CDStore实现了70%的货币成本节省。
英文摘要:
We present CDStore, which disperses users' backup data across multiple clouds and provides a unified multi-cloud storage solution with reliability, security, and cost-efficiency guarantees. CDStore builds on an augmented secret sharing scheme called convergent dispersal, which supports deduplication by using deterministic content-derived hashes as inputs to secret sharing. We present the design of CDStore, and in particular, describe how it combines convergent dispersal with two-stage deduplication to achieve both bandwidth and storage savings and be robust against side-channel attacks. We evaluate the performance of our CDStore prototype using real-world workloads on LAN and commercial cloud testbeds. Our cost analysis also demonstrates that CDStore achieves a monetary cost saving of 70% over a baseline cloud storage solution using state-of-the-art secret sharing.
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