计算机技术与发展2017，Vol.27Issue(3)：136-141,6.DOI:10.3969/j.issn.1673-629X.2017.03.028
基于CryptDB的选择加密策略研究
Investigation on Selective Encryption Strategy with CryptDB
摘要
Abstract
In order to protect privacy of sensitive data stored on the cloud,encrypting data is a feasible way. Computing on the encrypted data without decrypting is becoming a research hotspot. Combining selective encryption strategy with CryptDB,an encrypted database sys-tem which supports selective encryption strategy is proposed to improve the performance of encrypting and decrease the storage space. Since the use of multiple onion encryption models,data should be encrypted into several copies by CryptDB to adapt different situations. Encrypting non-sensitive fields will experience high computation time and increase storage space. A user-defined sensitive field detection algorithm is proposed and implemented through creating and registering the plain onion within original system,modifying the metadata ta-bles,and intercepting and revising the SQL queries. With the context meeting the user' s requirements of data security,the experimental results show that the scheme decreases the time of computation and storage space with the number of encrypted fields decreasing and makes the system more efficient and practical.关键词
选择加密/密文计算/CryptDB/密文数据库/洋葱加密Key words
selective encryption/cipher computing/CryptDB/encrypted database/onion encryption分类
信息技术与安全科学引用本文复制引用
张成果,杨庚,王伟..基于CryptDB的选择加密策略研究[J].计算机技术与发展,2017,27(3):136-141,6.基金项目
国家自然科学基金资助项目(61572263,61272084) （61572263,61272084）
