Author: Karl De Abrew

Using Digital Signatures with PDF

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With the recent signing of a new digital signatures law by U.S. President Bill Clinton, we’re re-posting a ‘Pulp Free’ column first written by Planet PDF’s Karl De Abrew for Adobe.com — a look at using using digital signatures in PDF documents.

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PDF templates – the invisible paper

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Bryan Guignard takes a pragmatic approach to his column with his PDF Templates kit. This kit consists of two files. The Template Interface, and a second PDF file which is a sample of invisible PDF paper along with the PostScript code snippet used to create it.

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The PostScript Thinker

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Planet PDF talks to Glenn Reid, among other things, expert in PostScript. Glenn has written and published two books with Addison-Wesley on the PostScript Language – one is Adobe’s ‘Green Book’. Glenn disusses the development of PostScript and its relationship to PDF.

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