How to load password-protected document

GroupDocs.Signature supports processing documents that are protected with a password.

The following are the steps to work with password protected documents.

The following code sample shows how to process password protected documents.

LoadOptions loadOptions = new LoadOptions()
{
    Password = "1234567890"
};
using (Signature signature = new Signature("sampleProtected.pdf", loadOptions))
{
    QRCodeSignOptions options = new QRCodeSignOptions("JohnSmith")
    {
        EncodeType = QRCodeTypes.QR,
        Left = 100,
        Top = 100
    };
    // sign document to file
    signature.Sign("SignedSampleProtected", options);
}

More resources

GitHub Examples

You may easily run the code above and see the feature in action in ourΒ GitHub examples:

Free Online AppsΒ 

Along with the full-featured .NET library, we provide simple but powerful free online apps.
To sign PDF, Word, Excel, PowerPoint, and other documents you can use the online apps from the GroupDocs.Signature App Product Family.