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Verify XML/PDF submitted content

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17-06-2008

When a fillable form gets posted to a web server either as an EMAIL/PDF/XML/XDP, is there a way the server can verify its authenticity of the submitted content.



I dont want the situation where users are submitting altered content or malformed content.



I essentially want to do something like this and am wondering it is possible.



1. sign the PDF

2. all submitted content will contain a hash of the signature which I can then verify on server side to make sure it originated from the same fillable PDF form.



Thanks