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中文摘要：
系统分析云环境中数据确定性删除面临的主要挑战,指出云计算虚拟化与多租户的特征,以及租赁、按需交付的商业模式是云环境中存在诸多安全问题需要确定性删除服务的根本原因,并给出云数据确定性删除的深层次含义;面向安全的角度从基于可信执行环境的确定性删除、基于密钥管理的确定性删除和基于访问控制策略的确定性删除3个方面对近年来相关研究工作进行深入分析和评述,并指出各种关键技术与方法的优势及存在的共性问题;最后给出云数据确定性删除领域未来的发展趋势。
英文摘要：
The major challenges faced by the data assured deletion in cloud computing was analyzed, it was observed the main reasons of performing cloud data assured deletion were the characteristics of cloud virtualization and multi-tenancy, as well as the business models of lease and on-demand delivery in cloud computing, and point out three levels of meaning of the cloud data assured deletion. Secondly, the state-of-the-art works on cloud data assured deletion was systematically surveyed from security-oriented view in terms of trusted execution environments, key managements and access control policies. It is also pointed out their highlights, limitations and general problems. Finally, some developing trends of this emerging research field were introduced.
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