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中文摘要：
在云存储服务中，为使用户可以随时验证存储在云存储服务器上数据的完整性，提出一种基于同态标签的动态数据完整性验证方法。通过引入同态标签和用户随机选择待检测数据块，可以无限次验证数据是否完好无损，并支持数据动态更新；可信第三方的引入解决了云用户与云存储服务供应商因数据完整性问题产生的纠纷，实现数据完整性的公开验证；然后给出该方法的正确性和安全性分析，以及该方法的性能分析；最后通过实验验证了该方法是高效可行的。
英文摘要：
In order to allow users can always verify the integrity of the data stored in cloud storage server, this paper proposed a dynamic data integrity verifying method based on homomorphic tags. Users could infinitely verify whether data integrity intact by introducing a homomorphic tags and user randomly selected data blocks to be verified,and support data dynamic updating; trusted third party auditor （TPA） could solve disputes of data integrity between users and cloud storage provider to realize the public validation of the data; and analysed correctness, security and performance of this method; finally the proposed method that could detect cloud storage data integrity was verified by experiment.
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