J4L PDF Digital Signature: Java Security Tool

Key Features

• Java component that creates/adds a digital signature to a PDF file.
• It is very easy to use, just 2 lines of Java code are required.
• This signature ensures the integrity of your document and its authentication.
• In other words, the receiver of the document knows you have created that document (authentication) and noone has modified it (integrity).
• The signature created will use the algorithms RSA signature, SHA1 hash and PKCS7 encoding.

Technical Specifications

• **Publisher:** https://www.java4less.com/pdfsignature/pdfsignature.php
• **License:** Shareware
• **Operating System:** Windows 7, Windows 8, Windows 10, Windows 11
• **Last Updated:** October 15, 2025
• **Category:** Programming / Developer Tools