任何处理在数据库中存储用户凭证的人都会告诉您，首要的规则之一是从不直接存储没有首先加密的密码或其它私有数据。

Anyone who's dealt with storing user credentials in a database will tell you that one of the first rules is to never store a password or other private data directly without encrypting it first.

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任何没有密钥的用户都不能够访问加密的数据。

Any user that does not have the key cannot access the encrypted data.

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注意：XML加密没有定义任何新的加密算法，只使用已有的算法。

Note: XML encryption does not define any new algorithms, but instead USES existing ones.

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