摘要
针对可搜索加密方案不支持关键字更新的问题,采用带计数器的布隆过滤器,设计了一种支持关键字更新的可搜索加密方案。该方案允许在索引密文中增加或者删除关键字,能够对文件的索引密文进行动态修正,使得文件索引和文件的关联更加紧密,提高了检索效率。分析结果表明,该方案在已知密文模型下是安全的,可保证查询关键字陷门信息不被云存储服务器获取。
Keyword update is not supported by the exiting searchable encryption scheme, so a searchable encryption scheme for supporting keyword update with counting Bloom filter is designed. Fixing cipher index through adding or deleting key word is allowed in the scheme, the cipher of file index can be revised. And association of file and its index can be made more closely. It is very convenient to improve the efficiency of data retrieval. The analysis result shows that the new scheme is safe in the known cipher model, which can protect the query keyword and the trapdoor information from being elicited by cloud storage server.
出处
《桂林电子科技大学学报》
2016年第1期44-47,共4页
Journal of Guilin University of Electronic Technology
基金
国家自然科学基金(61272037
61402366
61472472)
陕西省自然科学基础研究计划(2013JZ020
2015JQ6236)
西安邮电大学研究生创新基金(CXL2014-10
CXL2014-04)
关键词
可搜索加密
隐私保护
关键字更新
云存储
searchable encryption
privacy protection
keyword update
cloud storage
