How-to: Add A Digital Signature To A PDF File
In a recent series of blog posts, Didier Stevens has been demonstrating how to add digital signatures to a variety of file types. Last week he covered PDF: the tutorials is relatively straight-forward, simply going through the steps of how-to add a digital signature to a PDF, but for anyone who hasn’t done this before it could be quite useful. Especially for those of you who are nervous about password encryption after the recent Acrobat 9 and ElcomSoft kerfuffle.
Read the full tip: Howto: Add a Digital Signature to a PDF File.











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