通信学报2019，Vol.40Issue(1)：130-140,11.DOI:10.11959/j.issn.1000-436x.2019012
基于覆写验证的云数据确定性删除方案
Cloud data assured deletion scheme based on overwrite verification
摘要
Abstract
At the end of data life cycle, there is still a risk of data leakage, because mostly data which was stored in cloud is removed by logical deletion of the key. Therefore, a cloud data assured deletion scheme (WV-CP-ABE) based on ciphertext re-encrypt and overwrite verification was proposed. When data owner wants to delete the outsourced data, the data fine-grained deletion operation was realized by re-encrypting the ciphertext to change the access control policy. Secondly, a searchable path hash binary tree (DSMHT) based on dirty data block overwrite was built to verify the correctness of the data to be deletion. Finally, the dual mechanism of changing the ciphertext access control policy and data overwriting guarantees the data assured deletion. The experimental analysis proves that the fine-grained control is better and the security is more reliable than the previous logical delete method in the assured deletion of data.关键词
云存储/密文属性加密/确定性删除/散列二叉树/覆写验证Key words
cloud storage/CP-ABE/assured deletion/Hash binary tree/overwrite and verify分类
信息技术与安全科学引用本文复制引用
杜瑞忠,石朋亮,何欣枫..基于覆写验证的云数据确定性删除方案[J].通信学报,2019,40(1):130-140,11.基金项目
国家自然科学基金资助项目(No.61572170) （No.61572170）
河北省自然科学基金资助项目(No.F2018201153,No.2016205023) （No.F2018201153,No.2016205023）
河北省高等学校科学技术研究基金资助项目(No.ZD2016043) （No.ZD2016043）
河北省物联网监控工程技术研究中心基金资助项目(No.3142016020) （No.3142016020）
