密码体制从原理上可分为单钥体制（One-key System）和 公钥体制 （ Two-key System ） PGP（Pretty Good Privacy）是目前最流行的一种加密软件。
基于30个网页-相关网页
...统 (Message Handling System, MHS) 网络层 (network layer) 网络管理系统 (Network Management, NM) 单钥系统 (one-key system) 单次通行码 (one-time pad passwords) 单向杂凑函数 (one-way hash function) 通行码 (password) 实体层 (physical layer) 原文...
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By contrast, the virtualization that is a key component of cloud computing makes it appear that one system is many individual servers.
相比之下，作为云计算关键组件的虚拟化使其表现为一个系统是许多单独的服务器。
One of the key challenges of enterprise systems is properly implementing strong system security controls.
企业系统的主要挑战之一就是恰当地实现强系统安全控制。
If the measure of value is providing a system that meets stakeholder needs, one approach is to demonstrate the developing system to key stakeholders at regular intervals.
如果价值度量正在提供给一个满足涉众需求的系统，一种方法就是定期去证明开发系统是针对关键的涉众。
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