Lua

ScMinidriver - Delete Smart Card Key Container

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Demonstrates how to delete the contents of a key container on a smart card (or USB token). 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..
-- Here's the view of the card we happen to be using: a Gemalto (Thales) IDPrime MD T=0 smart card.

-- 

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"
local 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 delete the contents of a key container, 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 delete the contents of key container #7
-- This deletes both keys (signature key and "key exchange" key) that might be present in the key container.
-- (It is not possible to delete just one or the other.)
success = scmd:delete_key_container(7)
if not success then
    print(scmd.last_error_text)
    scmd:delete_context()
    return
end

scmd:delete_context()
print("Successfully delete the contents of key container #7")