用户向安全服务器提供一个秘密密钥（密码）来证明其身份。

The user supplies a secret key (password) to the security server to prove its identity.

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一旦安全服务器通过秘密密钥确认了用户的身份，用户登录到DCE的过程就完成了。

Once the security server confirms the identity of the user via secret key, the login process of the user into the DCE is completed.

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此秘密密钥只有该用户和安全服务器知道。

This secret key is known only to the user and the security server.

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