Lua

ScMinidriver - Import Private Key to Smart Card

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Demonstrates how to import a private key to the "signature" or "key exchange" location in the Nth key container on a smart card. Lua

local chilkat = require("chilkat")

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

-- Chilkat recommends the following free tool for interactively examining the contents of your smart card
-- through the ScMinidriver interface:  MGTEK Tool for Minidriver enabled Smart Cards

-- Let's first look at our smart card before importing a private key.
-- Here's the view of our Gemalto (Thales) IDPrime MD T=0 smart card in the MGTEK tool:

-- 

-- First let's load a private key into the Chilkat private key object.
-- (Chilkat provides the ability to load private keys from many different sources and formats.
-- this example loads from a PEM file.)
local privKey = chilkat.PrivateKey.new()
local success = privKey:load_pem_file("qa_data/rsa/rsaPrivKey_pkcs8.pem")
if not success then
    print(privKey.last_error_text)
    return
end

local scmd = chilkat.ScMinidriver.new()

-- First we need to acquire a context to the smart card in the reader where it is inserted.
-- Reader names (smart card readers or USB tokens) can be discovered
-- via List Readers or Find Smart Cards
local readerName = "Alcor Micro USB Smart Card Reader 0"
success = scmd:acquire_context(readerName)
if not success then
    print(scmd.last_error_text)
    return
end

-- If successful, the name of the currently inserted smart card is available:
print("Card name: " .. scmd.card_name)

-- To import a private key, we'll need to be PIN authenticated.
-- For more details about smart card PIN authentication, see the Smart Card PIN Authentication Example
local pinId = "user"
local retval = scmd:pin_authenticate(pinId, "0000")
if retval ~= 0 then
    print("PIN Authentication failed.")
    scmd:delete_context()
    return
end

-- Let's import into the "key exchange" position in key container #7.
success = scmd:import_key(7, "kex", privKey, "user")
if not success then
    print("PIN Authentication failed.")
    scmd:delete_context()
    return
end

scmd:delete_context()

print("Success.")

-- Here's the MGTEK view of the smart card after importing the private key:
--