可保护隐私的外包数据库查询验证技术

为了提高查询验证技术的安全性和计算速度,分析了数字签名链查询验证技术的结构特征,指出其具有数据库构建成本高、验证速度慢和安全性低等不足.将指定验证人签名的思想引入到外包数据库查询验证技术中,并根据外包数据库的安全需求设计了1个指定验证人签名方案,然后结合该签名方案提出一种安全、高效的可保护隐私数据的查询验证技术.该技术在查询验证过程中隐藏了数据拥有者的签名,能防止合谋攻击和伪冒攻击,可实施复杂的内容访问控制策略、保护隐私数据.理论分析和实验数据表明,该查询验证技术的数据库创建成本低、存储开销小、验证速度快、安全性高.

Query Verification Technique Preserving Privacy for Outsourced Databases

In order to improve the security and calculation speed of the query verification techniques,structural traits of the signature chain query verification scheme are analyzed,and that it has drawbacks of tremendous database construction cost,slow authentication and insufficient security is pointed out.Firstly,the ideas of designated verifier signature technology into query answer assurance techniques of outsourced databases are introduced,and a designated verifier signature scheme according to the security req...