加密的粒度还可以进一步细化，规定加密的类型是元素还是内容。
Encryption granularity can be further refined by specifying whether the encryption is of type element or content.
除了 encryptCompleteXmlFile 方法，我现在添加了以下两个方法来为不同数据类型的加密要求（加密颗粒度）提供服务。
In addition to the encryptCompleteXmlFile method, I have now added the following two methods to service the encryption requirements of different types of data (encryption granularity)
NFS Version 4的主要特性之一就是它对增强型安全方案的支持，该方案允许更强的身份验证、细粒度的访问控制以及加密的数据通信。
One of the major features of NFS Version 4 is its support for enhanced security schemes, which allow stronger authentication, fine-grained access control, and encrypted data traffic.
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