| The labefaction of network's security status threatens the security of computer. Inallusion to security problems computer faces, how to enhance the security andcapability protecting computer against attacks becomes a new research hotspot. In this thesis, we analyze the cause, characteristics of network security problemsand the defects in the current security technology based network, and especially studythe effects of data-integrity and access-control on the protected computer. Consideringthe characteristics of security problems and the current security status, we put forwarda scheme for computer security which is based on data-integrity, access-control, andour analysis. The work we have done also includes: Discussing MD5 Algorithm, therealizing principles, virtues and defects of the access control model in Windows 2000;We design and program to realize the main part function of the scheme by using ofC++Builder in Windows 2000. In the end, we also discuss some defects which need to be improved in ourrealization. |
