One simple example is by presenting a user ID along with a secret password.

一个简单的例子就是通过提交用户ID和密码。

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Only the users who can provide a secret password can view, copy, or modify encrypted data.

只有能提供密码的用户可以查看、复制或修改被加密的数据。

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Once the data is encrypted, only users who can provide a secret password can decrypt the data.

数据经过加密后，只有能提供密码的用户可以解密数据。

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Via Facebook, The Melt offered a secret password to fans of the sandwich shop.

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Virdi admitted he could not explain how the letters had been produced by a user at Hanwell Police Station using his own secret password.

BBC: Gurpal Virdi

But Passport, which stores personal information on Microsoft's servers, still lets customers use wildly insecure passwords like "password, " and lets anyone who knows your zip code take several cracks at guessing the personal "secret question" that resets the password.

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