i want to design a pdf form with functionality to attach files and further encrypt/digitally sign it. i want to do it programmatically through javascripts or adobe APIs. i know there are 'security' and 'securityHandler' objects in this regard. kindly help that what i need to do it? Acrobat DC pro is enough or i will have to buy the adobe library also for this task. And what is the role of Acrobat SDK in this??
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