we are trying to digitally sign pdf on a browser probably using js. the only good link i could find is this http://acrobatusers.com/forum/javascript/javascript-digitally-sign-multiple-pdf-documents-batch-processing have you found the answer to this problem ? did you successed in that task. thank you in advance.
I think you should take a look at DigiSigner. It is a PDF viewer with digital signature functionality. It is implemented in java, so it can run also as an applet in the browser on the client's side. There are demos, which does exactly what you need.