How to Verify Digital Signatures in DOT

GroupDocs.Signature makes it easy for .NET developers to verify digital signatures in DOT files from within their applications by implementing a few easy steps.

Create new instance of Signature class and pass source document path as a constructor parameter.
Instantiate the DigitalVerifyOptions object according to your requirements and specify verification options.
Call Verify method of Signature class and pass DigitalVerifyOptions to it.

System Requirements

GroupDocs.Signature for .NET APIs are supported on all major platforms and operating systems. Before executing the code below, please make sure that you have the following prerequisites installed on your system.

Operating Systems: Microsoft Windows, Linux, MacOS
Development Environments: Visual Studio, Xamarin, MonoDevelop
Frameworks: .NET Framework, .NET Standard, .NET Core, Mono
Download the latest version of GroupDocs.Signature for .NET from NuGet

using (Signature signature = new Signature("sample.pdf"))
{
    DigitalVerifyOptions options = new DigitalVerifyOptions("certificate.pfx")
    {
        Comments = "Test comment"
    };
    // verify document signatures
    VerificationResult result = signature.Verify(options);
    if (result.IsValid)
    {
        Console.WriteLine("\nDocument was verified successfully!");
    }
    else
    {
        Console.WriteLine("\nDocument failed verification process.");
    }
}

What is DOT File Format

Files with .DOT extension are template files created by Microsoft Word to have pre-formatted settings for generation of further DOC or DOCX files. A template file is created in order to have specific user settings that should be applied to subsequent files created from these. These settings include page margins, borders, headers, footers, and other page settings. Such templates are used in official documents such as company letterheads and standardized forms. The DOT file format is specific to Microsoft Word 2003 and earlier, but is supported by higher versions as well. Microsoft Word by default opens every new document based on normal.dot file. If modified, all the new files created will result in same settings as from the template file. In Microsoft Word 2007, the DOT file format has been replaced with Office OpenXML based DOTX file format. Learn more about DOT file format

Other Available Options

Multi format digital-signatures validation API for documents and images. Verify signatures from some of the popular file formats as stated below.

Verify Digital Signatures in a DOT File

C# .NET API to verify digital signatures in an already signed DOT file using popular electronic signature types. Manipulate e-signature properties within your documents by adding a few lined of code.

About GroupDocs.Signature for .NET API

How to Verify Digital Signatures in DOT

System Requirements

Verify DOT Signature Live Demos

What is DOT File Format

Other Available Options