文章针对学科试题库安全与保密问题，提出了适用于学科试题库的安全保密系统，并证明了该系统的安全性。

This article analyzed problems of security and defense in subject test lib and then put forward a security and defense system of subject test lib, and proved security of this system.

youdao

文章针对学科试题库安全与保密问题，提出了适用于学科试题库的安全保密系统，并证明了该系统的安全性。

This article analyzed problems of security and defense in subject test lib and then put forward a security and defense system of subject test lib, and proved security of this system.

youdao