How can I digitally sign a document using JavaScript? As part of a bigger product I need to programatically sign some PDFs using Adobe Acrobat. I have a physical USB token connected, and manually I would do the following:"Use a certificate" -> "Digitally sign" -> draw the field with the mouse -> select the Digital ID from the list (only one) -> "Continue" -> "Sign" -> "save" on the windows pop upI have come up with the following code to set up the signature field and try to sign:var pageWidth = 612;
var pageHeight = 792;
var signatureWidth = 100;
var signatureHeight = 50;
var padding = 10;
var left = pageWidth - signatureWidth - padding;
var bottom = pageHeight - signatureHeight - padding;
var f = this.addField("mySignature", "signature", 0, [left, bottom, left + signatureWidth, bottom + signatureHeight]);
var ppklite = security.getHandler("Adobe.PPKLite");
var sigField = this.getField("mySignature");
sigField.signatureSign(ppklite);but the response I get is:Exception in line 13 of function top_level, script Console:Ex
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