Use the AsnEncodedDataCollection class. : AsnEncodedDataCollection « Security « VB.Net

1. VB.Net
2. Security
3. AsnEncodedDataCollection

Use the AsnEncodedDataCollection class.

  

Imports System
Imports System.Security.Cryptography
Imports System.Security.Cryptography.X509Certificates

Class MainClass
   Shared Sub Main()
      Dim store As New X509Store("MY", StoreLocation.CurrentUser)
      store.Open((OpenFlags.ReadOnly Or OpenFlags.OpenExistingOnly))
      Dim collection As X509Certificate2Collection = CType(store.Certificates, X509Certificate2Collection)
      Dim fcollection As X509Certificate2Collection = CType(collection.Find(X509FindType.FindByTimeValid, DateTime.Now, False), X509Certificate2Collection)
 
      Dim scollection As X509Certificate2Collection = X509Certificate2UI.SelectFromCollection(fcollection, "Certificate Select", "Select certificates from the following list to get extension information on that certificate", X509SelectionFlag.MultiSelection)

      Dim asncoll As New AsnEncodedDataCollection()
      Dim i As Integer
      For i = 0 To scollection.Count - 1
          Console.WriteLine(scollection(i).GetName())
          Dim extension As X509Extension
          For Each extension In  scollection(i).Extensions
              Dim asndata As New AsnEncodedData(extension.Oid, extension.RawData)
              Console.WriteLine("Extension type: " & extension.Oid.FriendlyName)
              Console.WriteLine("Oid value: " & asndata.Oid.Value )
              Console.WriteLine("Raw data length: " & asndata.RawData.Length)
              Console.WriteLine(asndata.Format(True))
               asncoll.Add(asndata)
          Next extension
      Next i
      Console.WriteLine("Number of AsnEncodedData items in the collection: " & asncoll.Count)
      store.Close()

   End Sub
End Class

   
    
  

Related examples in the same category