DigitalSignatureIssuerName Property

Returns the subject distinguished name of the certificate isuuer.

Namespace:  Aspose.Words
Assembly:  Aspose.Words (in Aspose.Words.dll) Version: 20.9.0


public string IssuerName { get; }

Property Value

Type: String


Shows how to sign documents with X.509 certificates.
// Verify that a document is not signed.
Assert.False(FileFormatUtil.DetectFileFormat(MyDir + "Document.docx").HasDigitalSignature);

// Create a CertificateHolder object from a PKCS12 file, which we will use to sign the document.
CertificateHolder certificateHolder = CertificateHolder.Create(MyDir + "morzal.pfx", "aw", null);

// There are two ways of saving a signed copy of a document to the local file system:
// 1 - Designate a document by a local system filename, and save a signed copy at a location specified by another filename.
DigitalSignatureUtil.Sign(MyDir + "Document.docx", ArtifactsDir + "Document.DigitalSignature.docx", 
    certificateHolder, new SignOptions() { SignTime = DateTime.Now } );

Assert.True(FileFormatUtil.DetectFileFormat(ArtifactsDir + "Document.DigitalSignature.docx").HasDigitalSignature);

// 2 - Take a document from a stream, and save a signed copy to another stream.
using (FileStream inDoc = new FileStream(MyDir + "Document.docx", FileMode.Open))
    using (FileStream outDoc = new FileStream(ArtifactsDir + "Document.DigitalSignature.docx", FileMode.Create))
        DigitalSignatureUtil.Sign(inDoc, outDoc, certificateHolder);

Assert.True(FileFormatUtil.DetectFileFormat(ArtifactsDir + "Document.DigitalSignature.docx").HasDigitalSignature);

// Please verify that all of the document's digital signatures are valid, and check their details.
Document signedDoc = new Document(ArtifactsDir + "Document.DigitalSignature.docx");
DigitalSignatureCollection digitalSignatureCollection = signedDoc.DigitalSignatures;

Assert.AreEqual(1, digitalSignatureCollection.Count);
Assert.AreEqual(DigitalSignatureType.XmlDsig, digitalSignatureCollection[0].SignatureType);
Assert.AreEqual("CN=Morzal.Me", signedDoc.DigitalSignatures[0].IssuerName);
Assert.AreEqual("CN=Morzal.Me", signedDoc.DigitalSignatures[0].SubjectName);

See Also