Specifically , the contribution of this paper includes : 1 . provides the full solution of database encryption on any database system . the encryption of database is performed in the way that plus the encryption system over the dbms , sensitive data is encrypted in the unit of segmen . the way of database encryption is feasible and can be used for reference 具体地,本文的贡献有如下几点:提供了基于任何数据库的加密的整套解决方案,采用的是在dbms外层增加数据库加密系统、对敏感数据实行字段级加密的数据库加密方式,这种方式是目前较为可行和值得借鉴的数据库加密方式。
Stage in renewal being placed in continuously of this criterion , its safety is not perfect . moreover , the safety system that in past web service is based on encryption system and no symmetry encryption system , for using symmetry encryption system there is the problem of exchanging keys , and after using no symmetry encryption system the problem that password circular resolved , but realizing complication 这个规范处在不断的更新阶段,安全性能并不完善;另外,以前web服务的安全体系是架构于对称密码体系和非对称密码体系的,使用对称密码体系存在密钥通知的问题,后来使用了非对称密码体系,密码通知的问题解决了,但是使得实现起来变得更复杂化了。