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保護電腦安全的措施之給資訊加密

MEASURES TO PROTECT COMPUTER SECURITY  保護電腦安全的措施



    Security is concerned with protecting information, hardware, and software. Security measures consist of encryption, restricting aclearcase/" target="_blank" >ccess,anticipating disasters, and making backup copies.



    安全與資訊、硬體和軟體的保護有關。安全措施包括加密、限制訪問、預防災難和製作備份。

    Encrypting Messages  給資訊加密



    Whenever information is sent over a.network, the possibility of unauthorized access exists. The longer the distance the message has to travel, the higher the security risk is. For example, an e-mail message on a LAN meets a limited number of users operating in controlled environments such as offices. An e-mail message traveling across the country on the National Information Highway affords greater opportunities for the message to be intercepted.
   
    每當資訊通過網路發送,總是存在越權訪問的可能性。資訊傳輸的距離越遠,安全風險就越大。例如,局域網上的電子郵件只會遭遇在辦公室等受控環境中進行操作的有限數量的用戶。而在國家資訊高速公路上橫穿國家的電子郵件,則提供了更多的被截取的機會。

    Businesses have been encrypting, or coding, messages for years. They have become so good at it that some law enforcement agencies are unable to “wiretap” messages from suspected criminals. Some federal agencies have suggested that a standard encryption procedure be used so that law enforcement agencies can monitor suspected criminal communications. The government is encouraging businesses that use the National Information Highway to use a special encryption program. This program is available on a processor chip called the clipper chip and is also known as the key escrow chip.



    工商企業給資訊加密或解碼已達多年。它們在這方面已十分擅長,致使有些執法機構難以“竊聽”疑犯發送的資訊。一些聯邦機構建議採用標準的加密程式,以便執法機構能夠監控疑犯的通信。政府鼓勵使用國家資訊高速公路的工商企業採用一種專門的加密程式。這種程式可在一種處理器晶片上得到,該晶片稱為加密晶片,通常也稱為密鑰託管晶片。

    Individuals are also using encryption programs to safeguard their private communications. One of the most widely used personal encryption programs is Pretty Good Privacy.

    個人也使用加密程式來保護其私人通信。使用最廣泛的加密程式之一是PGP加密軟體。
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