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Working with Digital Signatures in Documents using C#

'Wordize for .NET' allows C# developers to easily integrate digital signature functionality into their applications. The library provides creation of digital signatures for various document formats to protect documents from unauthorized modifications and give them legal significance. Wordize Signature API is perfect for enterprise applications, information systems, and software products that require guaranteed integrity and authenticity of electronic documents.

In modern C# development practices, using reliable digital signing methods is becoming critically important for ensuring information security and regulatory compliance. Wordize API provides a comprehensive solution for working with digital signatures in the .NET environment.

Using Wordize Signature for .NET, you can:

  • Programmatically sign documents using X.509 standards (PFX/P12)
  • Remove digital signatures when necessary
  • Add metadata to signatures, such as comments and signing time

Technical Features and Benefits

  • Support for various scenarios: from simple digital signing to integration with document conversion workflows
  • Flexible signing options: the SignOptions class allows customizing various signature parameters
  • Support for input-output streams: ability to work with both files and data streams (I/O streams)

Our interactive online demo in C# will help you personally test all the capabilities of document digital signing. Simply upload a document in a supported format to our secure cloud platform, add your X.509 digital certificate in PFX/P12 format, enter the corresponding password, and see how the digital signing process works using C# code.

C#
Run code
Upload the file you want to sign
Upload X.509 certificate file (PFX/P12)
Select the target format from the list 
using Wordize.DigitalSignatures;

CertificateHolder certificateHolder = CertificateHolder.Create("Certificate.pfx", "password");
Signer.Sign("Input.docx", "Output.docx", certificateHolder);
using Wordize.DigitalSignatures; CertificateHolder certificateHolder = CertificateHolder.Create("Certificate.pfx", "password"); Signer.Sign("Input.docx", "Output.docx", certificateHolder);
Run code

How to sign a document with Digital Signature using C#

  1. Install Wordize for .NET
  2. Add a reference to the library (import the library) in your C# project
  3. Specify options for digital signature
  4. Sign a document with digital signature

System Requirements

Our product is fully cross-platform and supports all major .NET implementations:

  • .NET ≥ 5.0
  • .NET Core ≥ 2.0
  • .NET Standard ≥ 2.0
  • .NET Framework ≥ 3.5
  • MonoMac
  • MonoAndroid
  • Xamarin

As far as .NET code doesn't depend on the underlying hardware or operating system, but only on a Virtual Machine, you are free to develop any kind of software for Windows, macOS, Android, iOS and Linux. Just make sure you have installed the corresponding version of .NET Framework, .NET Core, Windows Azure, Mono or Xamarin.

We recommend using Microsoft Visual Studio, Xamarin, and MonoDevelop integrated development environments to create C#, F#, VB.NET applications.

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