Digital Signatures for PDF documents
A White Paper by Bruno Lowagie (iText Software)
Introduction
The main rationale for PDF used to be viewing and printing documents in a reliable way. The
technology was conceived with the goal “to provide a collection of utilities, applications, and system
software so that a corporation can effectively capture documents from any application, send
electronic versions of these documents anywhere, and view and print these documents on any
machines.” (Warnock, 1991)