PHP

ScMinidriver - Get Public Keys from Smart Card Key Container

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Demonstrates how to query a key container on a smart card (or USB token) to get the public part of the private keys that are present. A key container can hold two separate private keys -- one in the "signature" position, and the other in the "key exchange" position. Chilkat2 PHP

<?php

use Chilkat2\PublicKey;
use Chilkat2\ScMinidriver;

// 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 our Gemalto (Thales) IDPrime MD T=0 smart card in the MGTEK tool:

// 

$scmd = new ScMinidriver();

// 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
$readerName = 'Alcor Micro USB Smart Card Reader 0';
try {
    $scmd->AcquireContext($readerName);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

// If successful, the name of the currently inserted smart card is available:
echo 'Card name: ', $scmd->CardName, "\n";

// We likely shouldn't need to authenticate with the smart card (use a PIN) to simply get a public key,
// so we can skip the PIN authenticatin step..

// Let's get the key(s) present in Container #7.
// In our case (shown in the image above), there is a private key in the "key exchange" position, but no key in the "signature" position.
$pubkey_sig = new PublicKey();
$pubkey_kex = new PublicKey();

try {
    $scmd->GetContainerKeys(7, $pubkey_sig, $pubkey_kex);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

if ($pubkey_sig->Empty) {
    echo "No signature key is present.\n";
} else {
    echo "Signature key:\n";
    echo $pubkey_sig->GetPem(true), "\n";
}

if ($pubkey_kex->Empty) {
    echo "No Key Exchange key is present.\n";
} else {
    echo "Key Exchange key:\n";
    echo $pubkey_kex->GetPem(true), "\n";
}

$scmd->DeleteContext();

echo "Success.\n";

// Here's the output of the above sample code:

// Card name: IDPrime MD T=0
// No signature key is present.
// Key Exchange key:
// -----BEGIN RSA PUBLIC KEY-----
// MIIBCgKCAQEAsXeRhM55P13FbpNcXAMR3olbw2Wa6keZIHu5YTZYUBTlYWId+pNi
// wUz3zFIEo+0IfYR0H27ybIycQO+1IIzJofUFNMAL3tZps2OKPlsjuCPls6kXpXhv
// /gvhux8LrCtp4PcKWqJ6QVOZKChc7WAx40qFWzHi57ueqRTv3x0kESqGg/VjsqyT
// Evb55psJO2RsfhLT7+YVh3hImRM3RDaJdkTkPuOxeFyT6N7VXD09329sLuS3QkUb
// E9zEKDnz9X3d8dEQdJhSI9ba5fxl8R7fu8pB67ElfzFml96X1jLFtzy1pzOT5Fc4
// ROcaqlYckVzdBq9sxezm6MYmDBjNAcibRwIDAQAB
// -----END RSA PUBLIC KEY-----