基于数据库外层加密的洋葱式加密模型探讨

当今数据库应用技术的快速发展给数据库的安全带来了极大挑战，一方面数据库安全技术逐渐成为了网络应用的制约因素及性能瓶颈，另一方面用户对数据库安全的认识受到传统意识的影响以及商业化氛围的影响，从而存在较大的片面性和局限性，另外加上数据库安全技术的开发以及应用普遍的滞后于数据库系统应用技术等因素，这就使得数据库的安全形势不容乐观。对于数据库加密技术进行较为详细的分析和探讨，在此基础上提出了一种基于数据库外层加密的洋葱式加密模型，该模型对于提高数据库安全性具有一定帮助。

Exploration on Onion-mode Encryption Model for External DBMS

As the rapid development of database technology, the database now faces great security chanl- lenges. The database security technology gradually becomes the network-application restraint and network - function bottleneck on one hand, and on the other hand, as the users are affected by traditional con- sciousness and commercial atmosphere, there exist serious big one-sidedness and limitation in their under- standing of database security. In addition, the development of database security technology generally lags behind the database application, this makes no good to the database security. Based on the exploration of database encryption, an onion-mode encryption model for external DBMS （database management systems） is proposed, hoping that this model could improve the security of database.