CertificateHolder Class

public class CertificateHolder

Public Class CertificateHolder

public ref class CertificateHolder

type CertificateHolder =  class end

CertificateHolder certificateHolder = CertificateHolder.Create(MyDir + "morzal.pfx", "aw");

SignOptions signOptions = new SignOptions { Comments = "My comment", SignTime = DateTime.Now };

using (Stream streamIn = new FileStream(MyDir + "Digitally signed.docx", FileMode.Open))
{
    using (Stream streamOut = new FileStream(ArtifactsDir + "DigitalSignatureUtil.SignDocument.docx", FileMode.OpenOrCreate))
    {
        DigitalSignatureUtil.Sign(streamIn, streamOut, certificateHolder, signOptions);
    }
}

// Create certificate holder from a file
CertificateHolder certificateHolder = CertificateHolder.Create(MyDir + "morzal.pfx", "aw");

SignOptions signOptions = new SignOptions
{
    Comments = "Comment",
    SignTime = DateTime.Now,
    DecryptionPassword = "docPassword"
};

// Digitally sign encrypted with "docPassword" document in the specified path
string inputFileName = MyDir + "Encrypted.docx";
string outputFileName = ArtifactsDir + "DigitalSignatureUtil.DecryptionPassword.docx";

DigitalSignatureUtil.Sign(inputFileName, outputFileName, certificateHolder, signOptions);

[Description("WORDSNET-16868")]
public static void Sign()
{
    string signPersonName = "Ron Williams";
    string srcDocumentPath = MyDir + "Document.docx";
    string dstDocumentPath = ArtifactsDir + "SignDocumentCustom.Sign.docx";
    string certificatePath = MyDir + "morzal.pfx";
    string certificatePassword = "aw";

    // We need to create simple list with test signers for this example
    CreateSignPersonData();
    Console.WriteLine("Test data successfully added!");

    // Get sign person object by name of the person who must sign a document
    // This an example, in real use case you would return an object from a database
    SignPersonTestClass signPersonInfo =
        (from c in gSignPersonList where c.Name == signPersonName select c).FirstOrDefault();

    if (signPersonInfo != null)
    {
        SignDocument(srcDocumentPath, dstDocumentPath, signPersonInfo, certificatePath, certificatePassword);
        Console.WriteLine("Document successfully signed!");
    }
    else
    {
        Console.WriteLine("Sign person does not exist, please check your parameters.");
    }

    // Now do something with a signed document, for example, save it to your database
    // Use 'new Document(dstDocumentPath)' for loading a signed document
}

/// <summary>
/// Signs the document obtained at the source location and saves it to the specified destination.
/// </summary>
private static void SignDocument(string srcDocumentPath, string dstDocumentPath,
    SignPersonTestClass signPersonInfo, string certificatePath, string certificatePassword)
{
    // Create new document instance based on a test file that we need to sign
    Document document = new Document(srcDocumentPath);
    DocumentBuilder builder = new DocumentBuilder(document);

    // Add info about responsible person who sign a document
    SignatureLineOptions signatureLineOptions =
        new SignatureLineOptions { Signer = signPersonInfo.Name, SignerTitle = signPersonInfo.Position };

    // Add signature line for responsible person who sign a document
    SignatureLine signatureLine = builder.InsertSignatureLine(signatureLineOptions).SignatureLine;
    signatureLine.Id = signPersonInfo.PersonId;

    // Save a document with line signatures into temporary file for future signing
    builder.Document.Save(dstDocumentPath);

    // Create holder of certificate instance based on your personal certificate
    // This is the test certificate generated for this example
    CertificateHolder certificateHolder = CertificateHolder.Create(certificatePath, certificatePassword);

    // Link our signature line with personal signature
    SignOptions signOptions = new SignOptions
    {
        SignatureLineId = signPersonInfo.PersonId,
        SignatureLineImage = signPersonInfo.Image
    };

    // Sign a document which contains signature line with personal certificate
    DigitalSignatureUtil.Sign(dstDocumentPath, dstDocumentPath, certificateHolder, signOptions);
}

#if NETFRAMEWORK
/// <summary>
/// Converting image file to bytes array.
/// </summary>
private static byte[] ImageToByteArray(Image imageIn)
{
    using (MemoryStream ms = new MemoryStream())
    {
        imageIn.Save(ms, ImageFormat.Png);
        return ms.ToArray();
    }
}
#endif

/// <summary>
/// Create test data that contains info about sing persons
/// </summary>
private static void CreateSignPersonData()
{
    gSignPersonList = new List<SignPersonTestClass>
    {
        #if NETFRAMEWORK
        new SignPersonTestClass(Guid.NewGuid(), "Ron Williams", "Chief Executive Officer",
            ImageToByteArray(Image.FromFile(ImageDir + "Logo.jpg"))),
        #else
        new SignPersonTestClass(Guid.NewGuid(), "Ron Williams", "Chief Executive Officer", 
            SkiaSharp.SKBitmap.Decode(ImageDir + "Logo.jpg").Bytes),
        #endif

        #if NETFRAMEWORK
        new SignPersonTestClass(Guid.NewGuid(), "Stephen Morse", "Head of Compliance",
            ImageToByteArray(Image.FromFile(ImageDir + "Logo.jpg")))
        #else
        new SignPersonTestClass(Guid.NewGuid(), "Stephen Morse", "Head of Compliance", 
            SkiaSharp.SKBitmap.Decode(ImageDir + "Logo.jpg").Bytes)
        #endif
    };
}

private static List<SignPersonTestClass> gSignPersonList;