OfficeDigitalSignatureCertificate Class

Represents certificate information from a digital signature. Implements the public interface for certificate data.

Inheritance

System.Object

OfficeDigitalSignatureCertificate

Namespace: Syncfusion.Office

Assembly: Syncfusion.Compression.Base.dll

Syntax

public class OfficeDigitalSignatureCertificate : Object

Constructors

OfficeDigitalSignatureCertificate()

Initializes a new instance of the OfficeDigitalSignatureCertificate class.

Declaration

public OfficeDigitalSignatureCertificate()

Examples

//Open an existing Word document from a file
WordDocument document = new WordDocument(@"C:\Data\SampleDocument.docx");
//Create a new digital signature certificate
OfficeDigitalSignatureCertificate certificate = new OfficeDigitalSignatureCertificate();
//Configure signature settings
SignatureSettings settings = new SignatureSettings();
settings.Comments = "Approved";
settings.SignTime = DateTime.Now;
//Add the digital signature and save
document.AddDigitalSignature(certificate, settings);
document.Save(@"C:\Data\SignedDocument.docx", FormatType.Docx);
document.Close();

OfficeDigitalSignatureCertificate(String, String)

Initializes a new instance of the OfficeDigitalSignatureCertificate class.

Declaration

public OfficeDigitalSignatureCertificate(string certificatePath, string password)

Parameters

Type	Name	Description
System.String	certificatePath
System.String	password

Examples

//Open an existing Word document from a file
WordDocument document = new WordDocument(@"C:\Data\SampleDocument.docx");
//Load the signing certificate from disk
OfficeDigitalSignatureCertificate certificate = new OfficeDigitalSignatureCertificate(@"C:\Data\signer.pfx", "password");
//Configure signature settings
SignatureSettings settings = new SignatureSettings();
settings.Comments = "Approved";
settings.SignTime = DateTime.Now;
//Add the digital signature and save
document.AddDigitalSignature(certificate, settings);
document.Save(@"C:\Data\SignedDocument.docx", FormatType.Docx);
document.Close();

Properties

Issuer

Gets the certificate issuer name.

Declaration

public string Issuer { get; }

Property Value

Type
System.String

Examples

//Open a signed Word document from a file
WordDocument document = new WordDocument(@"C:\Data\SignedDocument.docx");
//Read the issuer from the first signature's certificate
string issuer = document.DigitalSignatures[0].Certificate.Issuer;
Console.WriteLine(issuer);
document.Close();

SerialNumber

Gets the certificate serial number.

Declaration

public string SerialNumber { get; }

Property Value

Type
System.String

Examples

//Open a signed Word document from a file
WordDocument document = new WordDocument(@"C:\Data\SignedDocument.docx");
//Read the serial number from the first signature's certificate
string serial = document.DigitalSignatures[0].Certificate.SerialNumber;
Console.WriteLine(serial);
document.Close();

Subject

Gets the certificate subject name.

Declaration

public string Subject { get; }

Property Value

Type
System.String

Examples

//Open a signed Word document from a file
WordDocument document = new WordDocument(@"C:\Data\SignedDocument.docx");
//Read the subject from the first signature's certificate
string subject = document.DigitalSignatures[0].Certificate.Subject;
Console.WriteLine(subject);
document.Close();

Thumbprint

Gets the certificate thumbprint (SHA1 hash).

Declaration

public string Thumbprint { get; }

Property Value

Type
System.String

Examples

//Open a signed Word document from a file
WordDocument document = new WordDocument(@"C:\Data\SignedDocument.docx");
//Read the thumbprint from the first signature's certificate
string thumbprint = document.DigitalSignatures[0].Certificate.Thumbprint;
Console.WriteLine(thumbprint);
document.Close();

ValidFrom

Gets the certificate ValidFrom (validity start) date.

Declaration

public DateTime ValidFrom { get; }

Property Value

Type
System.DateTime

Examples

//Open a signed Word document from a file
WordDocument document = new WordDocument(@"C:\Data\SignedDocument.docx");
//Read the validity start date from the first signature's certificate
DateTime validFrom = document.DigitalSignatures[0].Certificate.ValidFrom;
Console.WriteLine(validFrom);
document.Close();

ValidTo

Gets the certificate ValidTo (validity end) date.

Declaration

public DateTime ValidTo { get; }

Property Value

Type
System.DateTime

Examples

//Open a signed Word document from a file
WordDocument document = new WordDocument(@"C:\Data\SignedDocument.docx");
//Read the validity end date from the first signature's certificate
DateTime validTo = document.DigitalSignatures[0].Certificate.ValidTo;
Console.WriteLine(validTo);
document.Close();