Download the Free jPDFSecure Java Library
The jPDFSecure Java library provides features that make encrypting PDF documents safe and easy. It offers features like encryption, password protection, and access control. In addition, it has an easy-to-use interface. It can load PDF documents from files, network drives, URLs, and input streams that are generated runtime or directly from a database. While it may not be as advanced as some of the more popular options, it still performs a valuable role.
jPDFSecure is an open source Java library that can be used to encrypt PDF documents and change their security settings. It can also add passwords, permissions, and digital signatures to PDF documents. It is built using Qoppa's proprietary PDF technology, and you don't need to install any third-party software to use it. To use jPDFSecure, simply include its API in your Java code and it will encrypt and decrypt your PDF documents.
jPDFSecure can also be used to sign documents. It can apply certifiying signatures to PDF files, sign documents with a USB token, and support for timestamp servers. This program can be used on Windows, Linux, and Mac OS X systems. It requires Java to run.