Class RevokedCertificate

The RevokedCertificate class represents the revoked certificates used in PDF signing operations.

Inheritance

System.Object

RevokedCertificate

Namespace: Syncfusion.Pdf.Security

Assembly: Syncfusion.Pdf.Base.dll

Syntax

public class RevokedCertificate : Object

Constructors

RevokedCertificate()

Declaration

public RevokedCertificate()

Properties

SerialNumber

Gets a serial number of the revoked certificate.

Declaration

public string SerialNumber { get; }

Property Value

Type
System.String

Examples

//Loads an existing signed PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument("Input.pdf");
//Gets the signature field. 
PdfLoadedSignatureField signatureField = loadedDocument.Form.Fields[0] as PdfLoadedSignatureField;
Validate signature and gets the validation result.
PdfSignatureValidationResult result = signatureField.ValidateSignature();   
//Gets signer certificates.
PdfSignerCertificate[] signerCertificates = result.SignerCertificates;
foreach (PdfSignerCertificate signerCertificate in signerCertificates)
{
  if (signerCertificate.CrlCertificate != null)
  {
    //Gets the list of revoked certficates.
    RevokedCertificates[] revokedCertificates = signerCertificate.CrlCertificate.RevokedCertificates;
    if (revokedCertificates != null)
    {
     //Gets a serial number of the revoked certificate.
     string serialNumber = revokedCertificates[0].SerialNumber;
     //Gets a revoked date of the specific revoked certificate.
     DateTime revokedDate = revokedCertificates[0].ValidTo;
    }
  }
}
//Close the document.
loadedDocument.Close(true);

'Loads an existing signed PDF document.
Dim loadedDocument As PdfLoadedDocument = New PdfLoadedDocument("Input.pdf")
'Gets the signature field. 
Dim signatureField As PdfLoadedSignatureField = TryCast(loadedDocument.Form.Fields(0), PdfLoadedSignatureField)
'Validate signature and gets the validation result.
Dim result As PdfSignatureValidationResult = signatureField.ValidateSignature()
'Gets signer certificates.
Dim signerCertificates As PdfSignerCertificate() = result.SignerCertificates
For Each signerCertificate As PdfSignerCertificate In signerCertificates
  If signerCertificate.CrlCertificate IsNot Nothing Then
   'Gets the list of revoked certficates.
   Dim revokedCertificates As RevokedCertificates() = signerCertificate.CrlCertificate.RevokedCertificates
    If revokedCertificates IsNot Nothing Then
     'Gets a serial number of the revoked certificate.
     Dim serialNumber As String = revokedCertificates(0).SerialNumber
     'Gets a revoked date of the specific revoked certificate.   
     Dim revokedDate As DateTime = revokedCertificates(0).ValidTo
   End If
 End If 
Next
'Close the document.
loadedDocument.Close(True)

ValidTo

Retrieves the validity of the revoked CRL.

Declaration

public DateTime ValidTo { get; }

Property Value

Type
System.DateTime

Examples

//Loads an existing signed PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument("Input.pdf");
//Gets the signature field. 
PdfLoadedSignatureField signatureField = loadedDocument.Form.Fields[0] as PdfLoadedSignatureField;
Validate signature and gets the validation result.
PdfSignatureValidationResult result = signatureField.ValidateSignature();   
//Gets signer certificates.
PdfSignerCertificate[] signerCertificates = result.SignerCertificates;
foreach (PdfSignerCertificate signerCertificate in signerCertificates)
{
  if (signerCertificate.CrlCertificate != null)
  {
    //Gets the list of revoked certficates.
    RevokedCertificates[] revokedCertificates = signerCertificate.CrlCertificate.RevokedCertificates;
    if (revokedCertificates != null)
    {
     //Gets a serial number of the revoked certificate.
     string serialNumber = revokedCertificates[0].SerialNumber;
     //Gets a revoked date of the specific revoked certificate.
     DateTime revokedDate = revokedCertificates[0].ValidTo;
    }
  }
}
//Close the document.
loadedDocument.Close(true);

'Loads an existing signed PDF document.
Dim loadedDocument As PdfLoadedDocument = New PdfLoadedDocument("Input.pdf")
'Gets the signature field. 
Dim signatureField As PdfLoadedSignatureField = TryCast(loadedDocument.Form.Fields(0), PdfLoadedSignatureField)
'Validate signature and gets the validation result.
Dim result As PdfSignatureValidationResult = signatureField.ValidateSignature()
'Gets signer certificates.
Dim signerCertificates As PdfSignerCertificate() = result.SignerCertificates
For Each signerCertificate As PdfSignerCertificate In signerCertificates
  If signerCertificate.CrlCertificate IsNot Nothing Then
   'Gets the list of revoked certficates.
   Dim revokedCertificates As RevokedCertificates() = signerCertificate.CrlCertificate.RevokedCertificates
    If revokedCertificates IsNot Nothing Then
     'Gets a serial number of the revoked certificate.
     Dim serialNumber As String = revokedCertificates(0).SerialNumber
     'Gets a revoked date of the specific revoked certificate.   
     Dim revokedDate As DateTime = revokedCertificates(0).ValidTo
   End If
 End If 
Next
'Close the document.
loadedDocument.Close(True)