(Perl) Use a Smart Card Certificate + Private Key for SSL/TLS Authentication

See more ScMinidriver Examples

Demonstrates how to use a certificate + private key located on a smart card for the TLS client certificate in an HTTPS request.

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

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

$scmd = chilkat::CkScMinidriver->new();

# Reader names (smart card readers or USB tokens) can be discovered
# via List Readers or Find Smart Cards
$readerName = "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0";
$success = $scmd->AcquireContext($readerName);
if ($success == 0) {
    print $scmd->lastErrorText() . "\r\n";
    exit;
}

# If successful, the name of the currently inserted smart card is available:
print "Card name: " . $scmd->cardName() . "\r\n";

# If desired, perform regular PIN authentication with the smartcard.
# For more details about smart card PIN authentication, see the Smart Card PIN Authentication Example
$retval = $scmd->PinAuthenticate("user","000000");
if ($retval != 0) {
    print "PIN Authentication failed." . "\r\n";
}

# You can find a cerficate using any of the following certificate parts:
# "subjectDN" -- The full distinguished name of the cert.
# "subjectDN_withTags" -- Same as above, but in a format that includes the subject part tags, such as the "CN=" in "CN=something"
# "subjectCN" -- The common name part (CN) of the certificate's subject.
# "serial" -- The certificate serial number.
# "serial:issuerCN" -- The certificate serial number + the issuer's common name, delimited with a colon char.
# These are the same certificate parts that can be retrieved by listing certificates on the smart card (or USB token).
# See List Certificates on Smart Card Example
$certPart = "subjectCN";
$partValue = "BadSSL Client Certificate";

# If the certificate is found, it is loaded into the cert object.
# Note: We imported this certificate from a .p12/.pfx using this Example to Import a .pfx/.p12 onto a Smart Card
$cert = chilkat::CkCert->new();
$success = $scmd->FindCert($certPart,$partValue,$cert);
if ($success == 0) {
    print "Failed to find the certificate." . "\r\n";
    $scmd->DeleteContext();
    exit;
}

print "Successfully loaded the cert object from the smart card / USB token." . "\r\n";

# Note: When successful, the cert object is internally linked to the ScMinidriver object's authenticated session.
# The cert object can now be used to sign or do other cryptographic operations that occur on the smart card / USB token.
# If your application calls PinDeauthenticate or DeleteContext, the cert will no longer be able to sign on the smart card
# because the smart card ScMinidriver session will no longer be authenticated or deleted.

# ------------------------------------------------------------------------------------------------------------

# Send an HTTPS request to https://client.badssl.com
# https://client.badssl.com (part of the badssl.com service) lets you test authentication using client SSL certificates. 
# The client certificate can be downloaded from https://badssl.com/download/.
# This server returns 200 OK if the correct client certificate is provided, and 400 Bad Request otherwise.

$http = chilkat::CkHttp->new();

# Provide the client certificate (linked internally to our authenticated smartcard session)
$success = $http->SetSslClientCert($cert);
if ($success == 0) {
    print $http->lastErrorText() . "\r\n";
    $scmd->DeleteContext();
    exit;
}

$responseBody = $http->quickGetStr("https://client.badssl.com/");
if ($http->get_LastMethodSuccess() == 0) {
    print $http->lastErrorText() . "\r\n";
    $scmd->DeleteContext();
    exit;
}

print "Response status code: " . $http->get_LastStatus() . "\r\n";
print "Response body: " . "\r\n";
print $responseBody . "\r\n";

# ------------------------------------------------------------------------------------------------------------
# Cleanup our ScMinidriver session...

# When finished with operations that required authentication, you may if you wish, deauthenticate the session.
$success = $scmd->PinDeauthenticate("user");
if ($success == 0) {
    print $scmd->lastErrorText() . "\r\n";
}

# Delete the context when finished with the card.
$success = $scmd->DeleteContext();
if ($success == 0) {
    print $scmd->lastErrorText() . "\r\n";
}