TEMPEST ATTACK threat on the computer information security is analyzed. The fundamental electromagnetic radiation models are set up.

针对TEMPEST ATTACK对计算机信息安全构成的威胁，建立了基本的电磁辐射模型。

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Many authorization models have been proposed to ensure information security of computer systems.

人们已经提出了一些授权模型，以保证计算机系统的信息安全。

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Absrtact: access control is one solution of computer security, which have straight and nature features. Role - Based access control has most important influence among all access control models.

摘要：访问控制是众多计算机安全解决方案中的一种，是最直观最自然的一种方案。

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Absrtact: access control is one solution of computer security, which have straight and nature features. Role - Based access control has most important influence among all access control models.

摘要：访问控制是众多计算机安全解决方案中的一种，是最直观最自然的一种方案。

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