VB.NET

SSH HSM Public Key Authentication

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Demonstrates how to authenticate with an SSH server using public key authentication using an HSM (USB token or smartcard). VB.NET

Dim success As Boolean = False

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

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

Dim pkcs11 As New Chilkat.Pkcs11

' This would be a path to a .dylib on MacOS, or a path to a .so shared lib on Linux.
pkcs11.SharedLibPath = "C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll"
Dim pin As String = "0000"
Dim userType As Integer = 1

' Establish a PKCS11 logged-on session using the driver (.so, .dylib, or .dll) as specified in the SharedLibPath above.
success = pkcs11.QuickSession(userType,pin)
If (success = False) Then
    Debug.WriteLine(pkcs11.LastErrorText)
    Exit Sub
End If


' Set PKCS11 attributes to find our desired private key object.
Dim json As New Chilkat.JsonObject
json.UpdateString("class","private_key")
json.UpdateString("label","MySshKey")

' Get the PKCS11 handle to the private key located on the HSM.
Dim priv_handle As UInt32 = pkcs11.FindObject(json)

' Get the PKCS11 handle to the corresponding public key located on the HSM.
json.UpdateString("class","public_key")

Dim pub_handle As UInt32 = pkcs11.FindObject(json)

Dim key As New Chilkat.SshKey
' The key type can be "rsa" or "ec"
Dim keyType As String = "rsa"
success = key.UsePkcs11(pkcs11,priv_handle,pub_handle,keyType)
If (success = False) Then
    Debug.WriteLine(key.LastErrorText)
    Exit Sub
End If


Dim ssh As New Chilkat.Ssh

success = ssh.Connect("example.com",22)
If (success <> True) Then
    Debug.WriteLine(ssh.LastErrorText)
    Exit Sub
End If


' Authenticate with the SSH server using the login and
' HSM private key.  (The corresponding public key should've 
' been installed on the SSH server beforehand.)
success = ssh.AuthenticatePk("myLogin",key)
If (success <> True) Then
    Debug.WriteLine(ssh.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("Public-Key Authentication Successful!")