Encrypt PDF

Watch the Video

How to Encrypt PDF

The following classes are present in ceTe.DynamicPDF.Cryptography namespace and are used to encrypt PDF documents.

• Aes128Security,
• Aes256Security
• RC4128Security
• and RC440Security .

Some of the more common security settings you can use include:

• if the accessibility programs should be able to read a document's text and images for a user,
• if a document can be assembled and manipulated by a user,
• if form filling is allowed by a user,
• if a document can be printed at a high resolution by a user,
• and if a document's components can be encrypted.

Steps for Encrypting a New PDF Document

1. Create a Document object.
2. Create a Page object and add it to Document instance.
3. Create a Aes256Security object by setting the owner and user password.
4. Set the required security properties and apply the security to the Document Instance.
5. Invoke the Draw method on the Document instance to output the PDF.

Sample Code - C#

Document document = new Document();
           
Page page = new Page();
document.Pages.Add(page);
           
Aes256Security security = new Aes256Security("OwnerPassword", "UserPassword");
security.AllowAccessibility = true;
security.AllowFormFilling = false;            
document.Security = security;

document.Draw("Output.pdf");

Steps for Encrypting an Existing PDF Document

1. Create a MergeDocument object with the path to the PDF file.
2. Create a Aes256Security object by setting the owner and user password.
3. Set the required security properties and apply the security to the Document instance.
4. Invoke the Draw method on the Document instance to output the PDF.

Sample Code - C#

MergeDocument document = new MergeDocument("DocumentA.pdf");

Aes256Security security = new Aes256Security("OwnerPassword", "UserPassword");
security.AllowCopy = false;
security.AllowPrint = false;
document.Security = security;

document.Draw("Output.pdf");

GitHub Project

Clone or view the example project at GitHub. This examples contained on this page are in the Examples/EncryptPDF.cs file.

Getting Started

NuGet Package

DynamicPDF Generator is available on NuGet and is part of the ceTe.DynamicPDF.CoreSuite.NET package. The easiest way to install the package is through the Visual Studio Package Manager. You can also download the package directly from NuGet.

DynamicPDF Core Suite Information

More information on the Dynamic Core Suite can be found on its website.

• DynamicPDF Core Suite for .NET

Available on Other Platforms

• DynamicPDF Generator
  • Java - DynamicPDF Generator for Java
  • COM/ActiveX - DynamicPDF Generator for COM/ActiveX
• DynamicPDF Merger
  • Java - DynamicPDF Merger for Java
  • COM/ActiveX - DynamicPDF Merger for COM/ActiveX