POR-2P: Network Coding-Based POR for Data Provision-Payment System
POR-2P: Network Coding-Based POR for Data Provision-Payment System
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DOI：
10.1007/978-3-319-31811-0_12
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发表时间：
2015-07
期刊：
影响因子：
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通讯作者：
Kazumasa Omote;Tran Thao Phuong
中科院分区：
文献类型：
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作者：
Kazumasa Omote;Tran Thao Phuong
可检索性证明（POR）是一种协议，支持数据所有者检查存储在云服务器中的数据是否可用，完整和可检索。在POR的基础上，采用网络编码技术来提高数据传输和数据修复的效率和吞吐量。尽管已经提出了许多基于网络编码的POR，但是它们中的大多数都没有考虑实际场景，其中不仅数据所有者可以检查并且可以检索存储在不受信任的服务器中的数据，而且不受信任的用户可以检查并且可以检索存储在服务器中的数据而无需学习数据所有者的密钥。这种情况在现实中经常发生。例如，在网络供应-支付系统中，用户必须支付费用才能获得存储在服务器中的数据。在本文中，我们提出了一个新的网络编码为基础的POR，命名为POR-2 P（一个网络编码为基础的数据供应支付系统的POR），以处理这种情况。复杂性分析和性能评估表明，POR-2 P算法是一种有效的算法，适用于真实的云计算系统。
Proof Of Retrievability (POR) is a protocol that supports a data owner to check whether the data stored in cloud servers is available, intact and retrievable. Based on the POR, network coding technique has been applied to increase efficiency and throughput in data transmission and data repair. Although many network coding-based PORs have been proposed, most of them have not considered a practical scenario in which not only the data owner can check and can retrieve the data stored in the untrusted servers, but also an untrusted user can check and can retrieve the data stored in the servers without learning the secret keys of the data owner. This scenario occurs commonly in reality. For instance, in adata provision-payment system, the user must pay money to get data stored in the servers. In this paper, we propose a new network coding-based POR, named POR-2P (a network coding-based POR for data Provision-Payment system), to deal with this scenario. Furthermore, the complexity analysis and the performance evaluation show that the POR-2P is very efficient and applicable for a real cloud system.