I am currently working on some PDF processing code in Python. For this project, the software needs to be able to verify that a PDF has a valid digital signature. In my searching so far, I have found a few Java API's that do the trick (iText for example) but nothing in Python. If anyone has a link for either of the following, it would be most appreciated:
- An API I can use to verify a digital signature
- Instructions/general guidance for how I could write my own code to verify a digital signature
Miscellaneous Details:
- The Digital Certificate for the PDF is issued by GlobalSign CA for Adobe (if that matters)
- This code will eventually run on Google App Engine