VB.NET

PKCS11 Login / Logout

See more PKCS11 Examples

Sample code showing how to login and logout of a PKCS11 session. A session becomes authenticated when Login is called, and returns to the unauthenticated state when Logout is called. A smart card's PIN is passed to the Login method.

Note: This example requires Chilkat v9.5.0.88 or later.

VB.NET

Dim success As Boolean = False

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

' Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

Dim pkcs11 As New Chilkat.Pkcs11

' Set your shared lib path -- either a full path to the DLL, .so, or .dylib,
' or just the filename if the driver is in a location that can be automatically found. (Such as in C:\Windows\System32)
pkcs11.SharedLibPath = "aetpkss1.dll"

success = pkcs11.Initialize()
If (success = False) Then
    Debug.WriteLine(pkcs11.LastErrorText)
    Exit Sub
End If


' Pass -1 for the slotID to open a session on the first non-empty slot.
Dim slotID As Integer = -1

' Open a session.
Dim readWrite As Boolean = True
success = pkcs11.OpenSession(slotID,readWrite)
If (success = False) Then
    Debug.WriteLine(pkcs11.LastErrorText)
    Exit Sub
End If


' Make it an authenticated session by calling Login.
' The smart card PIN is passed to the Login method.
' The user type can be one of three choices:
' 0 - Security Officer
' 1 - Normal User
' 2 - Context Specific.
' You'll likely always login as the Normal User.
Dim userType As Integer = 1
Dim pin As String = "0000"
success = pkcs11.Login(userType,pin)
If (success = False) Then
    Debug.WriteLine(pkcs11.LastErrorText)
    success = pkcs11.CloseSession()
    Exit Sub
End If


' Do what is needed with the authenticated session...
' ...
' ...

' Revert to an unauthenticated session by calling Logout.
success = pkcs11.Logout()
If (success = False) Then
    Debug.WriteLine(pkcs11.LastErrorText)
    success = pkcs11.CloseSession()
    Exit Sub
End If


' When finished, close the session.
' It is important to close the session (memory leaks will occur if the session is not properly closed).
success = pkcs11.CloseSession()
If (success = False) Then
    Debug.WriteLine(pkcs11.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("PKCS11 Login and Logout successfully demonstrated.")