Adobe electronic signature

JSignPdf is a Java application which adds digital signatures to PDF documents. It can be used as a standalone application or as an Add-On in OpenOffice.org. The application uses the jsignpdf-itxt library for PDF manipulations (based on iText library in version 2.1.7 with LGPL/MPL license). JSignPdf is open-source software and can be freely used in both private and business sectors.

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Features

•     visible signatures - image and/or description located visualy in a PDF file (page and position can be specified)

•     several different keystore types (as provided by Java)

•     timestamps from authority in signature (TSA)

•     certificate validation through CRL and/or OCSP

•     setting certification level

•     setting hash algorithm

•     PDF encryption and setting rights

•     comprehensive Swing GUI

•     support for batch processing (controlled by command line arguments, without GUI)

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