The Portable Document Format (PDF) standard is a good way to store documents that need to be accessible to multiple platforms. The standard provides formats for the display of many types of data, such as text, images, interactive forms, and multimedia content. The PDF standard also provides for security capabilities, including file encryption and digital signatures. The digital signature capability makes the PDF format very attractive for businesses that require an accessible, strong method of authentication for document workflows. There are currently several open source libraries available for converting documents to PDF format, parsing existing PDFs, and even allowing access to some of the inner attributes of PDF files. Most of them also support the encryption capabilities defined by the[…]