本文關(guān)鍵詞：云存儲(chǔ)中支持失效文件快速查詢的批量審計(jì)方法　出處：《計(jì)算機(jī)學(xué)報(bào)》2017年10期 　論文類型：期刊論文

  更多相關(guān)文章： 數(shù)據(jù)安全 云存儲(chǔ) 數(shù)據(jù)完整性驗(yàn)證 批量審計(jì) 快速查詢 失效文件

【摘要】：云存儲(chǔ)服務(wù)中,批量審計(jì)是高效驗(yàn)證云端數(shù)據(jù)完整性的關(guān)鍵技術(shù).批量審計(jì)容易遭受"失效文件"攻擊,并且查詢失效文件代價(jià)高、速度慢,嚴(yán)重影響著批量審計(jì)方案的可用性和效率.針對(duì)該問題,提出一種支持失效文件快速查詢的批量審計(jì)方法,該方法通過建立批量審計(jì)過程的關(guān)聯(lián)性,改變了二分查詢樹中右孩子節(jié)點(diǎn)的計(jì)算方式,減少了整個(gè)查找過程的批量審計(jì)次數(shù);并在批量審計(jì)過程中執(zhí)行冪指測(cè)試,通過一次審計(jì)就可完成含有單個(gè)失效文件的子樹查找過程,有效縮短了子樹的查找長度;采用混合型查詢方法,根據(jù)歷史查詢信息設(shè)置冪指測(cè)試的深度,降低了"失效文件聚集處"的查詢開銷.安全分析和性能表明,該方法能夠快速完成失效文件定位,有效抵抗"失效文件"攻擊,保證了批量審計(jì)方案的可用性和效率.在少量文件失效的情景下,相較于簡(jiǎn)單二分查找方法,文中方法耗費(fèi)的批量審計(jì)次數(shù)減少了30%.
[Abstract]:In cloud storage service, batch audit is the key technology to verify the integrity of cloud data efficiently. Batch audit is vulnerable to "invalid file" attack, and the cost of querying invalid files is high and the speed is slow. The availability and efficiency of batch audit schemes are seriously affected. In order to solve this problem, a batch audit method is proposed to support fast query of failure files, which establishes the relevance of batch audit process. The calculation method of the right child node in the binary query tree is changed, and the batch audit times of the whole searching process are reduced. In the process of batch audit, the power index test is carried out, and the searching process of subtree with a single invalid file can be completed by one audit, which effectively shortens the searching length of the subtree. The hybrid query method is used to set the depth of power index test according to the historical query information, which reduces the query cost of "failure file aggregation". The security analysis and performance show. This method can locate the failure file quickly, resist the attack of the failure file effectively, and ensure the availability and efficiency of the batch audit scheme. In the case of a few file failure, the method is compared with the simple binary search method. The number of batch audits consumed by this method is reduced by 30%.
【作者單位】： 西北工業(yè)大學(xué)計(jì)算機(jī)學(xué)院;
【基金】：國家“八六三”高技術(shù)研究發(fā)展計(jì)劃項(xiàng)目基金(2013AAOIA215) 國家自然科學(xué)基金(61472323,61502392) 中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目(3102015JSJ0009) 華為創(chuàng)新基金項(xiàng)目(YB2014040023)資助~~
【分類號(hào)】：TP309;TP333
【正文快照】： i引言 云存儲(chǔ)服務(wù)作為互聯(lián)網(wǎng)+應(yīng)用的重要支撐技術(shù),為用戶(企業(yè)和個(gè)人)提供了低成本、高質(zhì)量、易擴(kuò)展的在線數(shù)據(jù)存儲(chǔ)服務(wù).很多互聯(lián)網(wǎng)+應(yīng)用以云存儲(chǔ)服務(wù)為載體,例如協(xié)同辦公、安全食品、遠(yuǎn)程診療、智慧城市等,這些應(yīng)用不僅有助于企業(yè)轉(zhuǎn)型,而且將引領(lǐng)社會(huì)的變革.與此同時(shí),由于云，

本文編號(hào)：1384716