Signing

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jabhatfield edited this page Apr 10, 2024 · 4 revisions

OpenPDF Tutorial

Cryptographically sign a PDF.

Example

See Signing in the pdf-toolbox:

Create a file named VisibleSignature.pdf in the current directory.
Add an unverified visible signature.
Create a file named InvisibleSignature.pdf in the current directory.
Add an unverified invisible signature.
Extract a verified signature from a PDF that has been signed with a certificate.

⚠️ To create a verified signature, a valid certificate must be acquired from a certificate authority and a private key must be installed. See the PdfStamper Javadoc for details.

OpenPDF is a Java library for creating and editing PDF files with a LGPL and MPL open source license.