【摘要】 基于云端的数据去重技术能够删除相同明文的加密数据,从而可以提高云存储空间的利用率。当前,实现数据去重的方法有基于文件级的数据去重和基于文件块级的数据去重。然而,现有的大多数方案不支持数据的动态操作,缺乏灵活性,不能满足实际需求。为了解决该问题,文章通过利用链表灵活的内存管理和易操作的优势,提出一种安全、高效的云端数据去重方案。该方案在文件发生动态变化时,能够实现高效的文件块级去重,从而有效地节省云服务器的空间。更多还原

【Abstract】 Deduplication based on cloud can remove encrypted data from the same plaintext, thereby increasing the utilization of cloud storage space. Currently, deduplication can be achieved on both file-level and file-block level. However, most of the existing schemes do not support the dynamic operation of data, are short of flexibility, and can not meet the actual needs. This paper proposes a safe, high efficient cloud deduplication schema based on the advantages of flexible memory management and simple operation of linked list. The scheme can achieve high efficient deduplication on file-block level when the file changes dynamically, thus effectively saving the space of the cloud server.更多还原