使用XSL创建XML文件的哈希

I am trying to find a way to "hash" the contents of an XML file. At the root of this is a need to compare some text nodes that are passed in to text nodes that I am expecting to make sure that the checksum is the same. The passed-in text nodes have returned from a form submission and I need to ensure that they were not changed (within reason, ruling out collisions).I am trying to find a way to "hash" the content