(Visual Basic 6.0) PKCS11 Import a Private Key onto the HSM

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Demonstrates how to import an existing RSA private key onto the smartcard/token. The imported key is a token object, meaning it stays on the HSM and exists beyond the end of the PKCS11 session.

Note: This example requires Chilkat v9.5.0.96 or later.

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' 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 ChilkatPkcs11

' 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.
Dim pin As String
pin = "0000"
Dim userType As Long
userType = 1
Dim success As Long
success = pkcs11.QuickSession(userType,pin)
If (success = 0) Then
    Debug.Print pkcs11.LastErrorText
    Exit Sub
End If

' Let's import a certificate's private key onto the HSM.
' First, we'll load the certificate from a .pfx (also known as .p12), which is a file format
' that also includes the certificate's private key.
Dim cert As New ChilkatCert
success = cert.LoadPfxFile("qa_data/pfx/ehealth.fgov.be_testing.p12","p12_password")
If (success = 0) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

' Let's get the certificate's private key.
Dim privKey As PrivateKey
Set privKey = cert.ExportPrivateKey()
If (cert.LastMethodSuccess = 0) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

' Build a PKCS11 template to provide additional information about the key to be imported.
Dim jsonTemplate As New ChilkatJsonObject

' Indicate that the key is to be stored on the token.  It is NOT a session object.
success = jsonTemplate.UpdateBool("token",1)

' Indicate that the key can be used for signing.
success = jsonTemplate.UpdateBool("sign",1)

' Provide an arbitrary ID and label (anything you want).
' The information in the ID and/or label provides one means for finding the key in future PKCS11 sessions.
success = jsonTemplate.UpdateString("id_hex","010203040A0B0C0D0E0F")
success = jsonTemplate.UpdateString("label","ehealth private key")

' Import the key.  The private key handle is returned on success.  Otherwise 0 is returned.
' If our only task for now is to simply import the key, we can ignore the returned handle, 
' other than to check for success/failure.  Otherwise, the handle can be used in other PKCS11 operations.
' This example just creates the key and does not use the returned handle.
Dim keyHandle As Long
keyHandle = pkcs11.ImportPrivateKey(privKey,jsonTemplate)
If (keyHandle = 0) Then
    Debug.Print pkcs11.LastErrorText
Else
    Debug.Print "key handle = " & keyHandle
    Debug.Print "Successfully imported a private key onto the HSM."
End If

success = pkcs11.Logout()
success = pkcs11.CloseSession()