An Bug of iText and iTextSharp
Somebody sent me a encrypted PDF to ask me help decrypt, I tried pdfcrypt, it got error. and when used pdfcrack, got …
Converting Adobe Designer Static forms to Acrobat PDF Forms
In Ted Padova‘s post, he said, Adobe Designer 8 supports two different types of forms: Static forms and Dynamic forms. If a …
Digital Signature PDF Documents With Free Software
A digital signature is like a paper-based signature – each giving you a method for adding a unique identifier to a document. …