When a computer is disconnected from the network， the node it formed ceases to exist and any encryption-key data stored there are lost.

一旦计算机断开对等网络，网络形成的节点随即不复存在，储存在节点上的密钥数据也随之消失。

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Requesters can authenticate recipients using network and transport-provided security, claims proven in messages, and encryption of the request using a key known to the recipient.

通过网络和由传输提供的安全性、消息中已批准的声明，以及用收件人已知的密钥对请求进行加密，请求者可以对收件人进行身份验证。

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The most main security technology of network system is data encryption, but RSA algorithm is the safest system of key systems.

网络系统最主要的安全技术是数据加密，而RSA算法是密钥系统最安全的一种体制。

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If these card numbers were in fact stolen from the Playstation Network, it may be that the encryption Sony says it used was weak, badly implemented, or that the decryption key was included in the stolen data.

FORBES: Update: Sony Encrypted Playstation Users' Credit Cards, But Researchers Spot Stolen Cards Online