(Visual Basic 6.0) PKCS11 Import an Existing RSA Public Key onto the HSM

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Demonstrates how to import an existing RSA Public Key onto a smart card or token.

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

' Generate a new 2048-bit RSA key.
Dim rsa As New ChilkatRsa
success = rsa.GenerateKey(2048)
If (success = 0) Then
    Debug.Print rsa.LastErrorText
    Exit Sub
End If

' Get the public key information as XML, so we can access the modulus and exponent.
Dim xml As New ChilkatXml
success = xml.LoadXml(rsa.ExportPublicKey())

Dim attrs As New ChilkatJsonObject
' Specify the type of object, and the type of key.
success = attrs.UpdateString("class","CKO_PUBLIC_KEY")
success = attrs.UpdateString("key_type","CKK_RSA")
' Add an optional label if desired.
success = attrs.UpdateString("label","RSA Public Key 1")
' Allow the key to be use for verify, wrapping, and encryption operations.
success = attrs.UpdateBool("verify",1)
success = attrs.UpdateBool("wrap",1)
success = attrs.UpdateBool("encrypt",1)

' Make this a session-only public key.
' To store the public key on the token so that it persists after the PKCS11 session, set token = 1.
success = attrs.UpdateBool("token",0)

' Provide the RSA public key material
success = attrs.UpdateString("modulus",xml.GetChildContent("Modulus"))
success = attrs.UpdateString("public_exponent",xml.GetChildContent("Exponent"))

' Create the RSA public key.
' Returns the PKCS11 object handle of the created key.
Dim objHandle As Long
objHandle = pkcs11.CreatePkcs11Object(attrs)
If (objHandle = 0) Then
    Debug.Print pkcs11.LastErrorText
    Debug.Print "Failed."
Else
    Debug.Print "PKCS11 object handle = " & objHandle
    Debug.Print "Successfully imported an RSA key.."
End If

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