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Encrypt and Decrypt PDF Files in Java

In various cases, PDF documents are encrypted before they are shared among the stakeholders. The encryption makes the document secure from unauthorized access as well as the content tampering. There are a couple of popular ways of securing the PDF documents – encrypting PDF with a password or limiting the user’s access permissions such as printing, editing, copying, etc. This article demonstrates how to encrypt or decrypt a PDF document using Java. In addition, you will learn how to limit the user’s privileges in a PDF document.
October 16, 2020 · 4 min · Usman Aziz