中文密文数据库正则查询的研究与实现

为提高中文密文数据库查询的灵活性、便捷性、高效性,设计了一种新的密文索引结构.它通过登记汉字所在记录的记录标识以及汉字在属性值中的位置,来提供对中文正则查询的支持.在这种索引的基础上,提出了一系列正则查询处理算法,这些算法利用索引登记的汉字位置信息来筛选符合查询条件的记录.仿真实验证明,利用这种索引和算法,能够在中文密...

Research and implement of regular query of chinese encrypted database

In order to make the query of Chinese encrypted database more flexible, more convenient and more efficient, a new encrypted index is designed. To support regular query, it registers the locations of a Chinese character in the records and registers the positions in a record field. Based on this index, a series of algorithms are presented for processing regular query, which make use of the information about the positions of Chinese characters to find out the records satisfying the query. Experiments show that this kind of index and algorithms can support regular queries of Chinese Encrypted database and has good query performance.