VB.NET

PKCS11 Export Public Key from HSM

See more PKCS11 Examples

Demonstrates how to export a public key from a smartcard or token. 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

' Use the PKCS11 driver (.dll, .so, .dylib) for your particular HSM.
' (The format of the path will change with the operating system.  Obviously, "C:/" is not used on non-Windows systems.
pkcs11.SharedLibPath = "C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll"

' Establish a logged-on session. (We can typically skip the login by passing an empty PIN if only working with public keys)
' Use your actual PIN here, or an empty string to skip login.
Dim pin As String = "0000"
Dim userType As Integer = 1
success = pkcs11.QuickSession(userType,pin)
If (success = False) Then
    Debug.WriteLine(pkcs11.LastErrorText)
    Exit Sub
End If


' Get the handle of the public key we wish to export.
' You can find public keys in many different ways.
' This example will search for a public key by label.

' Provide a template to find a PKCS11 object.
Dim jsonTemplate As New Chilkat.JsonObject

' Find the public key with the label "Belgium eHealth".
jsonTemplate.UpdateString("class","public_key")
jsonTemplate.UpdateString("label","Belgium eHealth")

Dim pubKeyHandle As UInt32 = pkcs11.FindObject(jsonTemplate)
If (pubKeyHandle = 0) Then
    Debug.WriteLine(pkcs11.LastErrorText)
    Exit Sub
End If


' Export to a Chilkat public key object.
Dim pubKey As New Chilkat.PublicKey
success = pkcs11.ExportPublicKey(pubKeyHandle,pubKey)
If (success = False) Then
    Debug.WriteLine(pkcs11.LastErrorText)
    Exit Sub
End If


' Get the public key as PKCS8 PEM.
Debug.WriteLine(pubKey.GetPem(False))

pkcs11.Logout()
pkcs11.CloseSession()