视线所及之处都是认证——认证书籍充斥书店，现在的课堂培训保证您“通过”认证考试，IT专业人员甚至用“证书”列表为电子邮件签名。

You see it everywhere you look... certification books dominate the bookstores, classroom training now guarantees a "pass," and it professionals even sign their emails with a list of their "certs."

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UserBean类存储了有关应用程序的已认证用户的信息，如用户名、全名和电子邮件地址。

The UserBean class stores information about the application's authenticated users, such as user name, full name, and E-mail address.

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然后，从电子邮件安全角度入手，主要设计实现了分包机制和加解密认证机制，详细阐述了安全系统的实现。

Then, starting from thee-mail security, primarily achieved assigned package and encrypt-decrypt authentication mechanism, and elaborated the implementation of a secure system.

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