Perl

PKCS11 Sign PDF using Certificate and Private Key on Smart Card / USB Token

See more PKCS11 Examples

Sample code showing how to use PKCS11 to sign a PDF with a certificate and private key stored on a smart card or USB token.

Note: This example requires Chilkat v9.5.0.96 or later.

Perl

use chilkat();

$success = 0;

# 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.

$pkcs11 = chilkat::CkPkcs11->new();

$pkcs11->put_SharedLibPath("C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll");
$pin = "0000";
$userType = 1;

# Establish a PKCS11 logged-on session using the driver (.so, .dylib, or .dll) as specified in the SharedLibPath above.
$success = $pkcs11->QuickSession($userType,$pin);
if ($success == 0) {
    print $pkcs11->lastErrorText() . "\r\n";
    exit;
}

# Get the certificate (on the smart card) that has a private key.
# There are other ways to locate a certificate on the HSM.
# This example assumes there is a single certificate w/ private key.
$cert = chilkat::CkCert->new();
$success = $pkcs11->FindCert("privateKey","",$cert);
if ($success == 1) {
    print "Cert with private key: " . $cert->subjectCN() . "\r\n";
}
else {
    print "No certificates having a private key were found." . "\r\n";
    $success = $pkcs11->CloseSession();
    exit;
}

# --------------------------------------------------------------------------
# At this point, we have the cert to be used for signing.
# Our PDF signing code is the same as for a cert obtained from any other source..

$pdf = chilkat::CkPdf->new();

# Load a PDF to be signed.
$success = $pdf->LoadFile("qa_data/pdf/hello.pdf");
if ($success == 0) {
    print $pdf->lastErrorText() . "\r\n";
    $success = $pkcs11->CloseSession();
    exit;
}

$json = chilkat::CkJsonObject->new();

$json->UpdateInt("page",1);
$json->UpdateString("appearance.y","top");
$json->UpdateString("appearance.x","left");
$json->UpdateString("appearance.fontScale","10.0");
$json->UpdateString("signingAlgorithm","pss");
$json->UpdateString("hashAlgorithm","sha256");

$i = 0;
$json->put_I($i);
$json->UpdateString("appearance.text[i]","Digitaly signed by: Xyz Widgets, Inc.");
$i = $i + 1;
$json->put_I($i);
$json->UpdateString("appearance.text[i]","current_dt");
$i = $i + 1;
$json->put_I($i);
$json->UpdateString("appearance.text[i]","blah blah blah");

# The certificate is internally linked to the Pkcs11 object, which is currently in an authenticated session.
$success = $pdf->SetSigningCert($cert);

$success = $pdf->SignPdf($json,"qa_output/out.pdf");
if ($success == 0) {
    print $pdf->lastErrorText() . "\r\n";
    $success = $pkcs11->CloseSession();
    exit;
}

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

# Revert to an unauthenticated session by calling Logout.
$success = $pkcs11->Logout();
if ($success == 0) {
    print $pkcs11->lastErrorText() . "\r\n";
    $success = $pkcs11->CloseSession();
    exit;
}

# When finished, close the session.
# It is important to close the session (memory leaks will occur if the session is not properly closed).
$success = $pkcs11->CloseSession();
if ($success == 0) {
    print $pkcs11->lastErrorText() . "\r\n";
    exit;
}

print "Success." . "\r\n";