摘要
通过对原有文件数字签名系统和数据库系统在网络应用中要求的分析，提出了数据库系统中的数字签名体系结构和其接口ＳＩＧ－ＳＱＬ语言。该体系可对数据库内的数据提供一个与文件数字签名协议相当的数字签名功能，还可对数据集生成检验签名和多用户的并发操作中签名有效性提供保证。这一体系可灵活地用各种不同的密码算法与文件签名系统结合应用。同时，在ＳＹＢＡＳＥ数据库系统中，通过触发器、存储过程和远程过程调用，实现了数据库数字签名体系的原型系统，说明这一系统是有效的可实现的。最后，给出了ＳＩＧ－ＳＱＬ语言网关的模块设计方案并作了分析。
By analyzing the filelevel digital signature system and studying the requirement stressed by network applications on database systems,we design a database digital signature architecture and SIGSQL,a superset of SQL,as its interface.This architecture can provide digital signature functions analogous to those provided by filelevel digital signature systems.It can create and check signatures on data sets,and also assure the correctness of signatures in concurrent operations.This architecture have the flexiblity so it can use various signature algorithms and work along with filelevel systems.At the same time,we have implemented a prototype for this architecture using triggers,stored procedures,and RPCs .It shows that this system is both effective and implementable.Finally,we give a modular design and analysis for a SIGSQL gateway.
出处
《华东理工大学学报（自然科学版）》
CAS
CSCD
北大核心
1998年第2期198-202,共5页
Journal of East China University of Science and Technology
关键词
数据库
数字签名
公钥密码学
数据安全
database
digital signature
public key cryptography
data security〖W
