Research on Ciphertezt Indez Method for Relational Database
Encryption is an important approach of ensuring the data security of relational database. However, most existing encryption algorithms, which are regarded as secure, basically can not guarantee that the order in original text still remains in ciphertext, which brings great efficiency problems during the use of encrypted database; on the other hand, those orderpreserving encryption algorithms have difficulties to achieve security. This paper presents a method for database encryption and ciphertext index, in which the conventional security encryption technology was adopted for data encryption; besides, great numbers of exponential algorithms were adopted to generate order-preserving ciphertext index based on the characteristic that it was difficult to obtain the solution with discrete logarithm so as to ensure the efficiency of ciphertext database system.
relational database database encryption ciphertezt indez query efficiency
HUANG Qi-chun
College of Computer Science and Technology,Zhejiang University Hangzhou , China
国际会议
北京
英文
1766-1770
2009-08-08（万方平台首次上网日期，不代表论文的发表时间）