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(PHP Extension) PKCS11 Sign PDF using Certificate and Private Key on Smart Card / USB TokenSee more PKCS11 ExamplesSample 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.
<?php // The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number. // For example, if using Chilkat v9.5.0.48, then include as shown here: include("chilkat_9_5_0.php"); // 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 = new CkPkcs11(); $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 == false) { print $pkcs11->lastErrorText() . "\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 = new CkCert(); $success = $pkcs11->FindCert('privateKey','',$cert); if ($success == true) { print 'Cert with private key: ' . $cert->subjectCN() . "\n"; } else { print 'No certificates having a private key were found.' . "\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 = new CkPdf(); // Load a PDF to be signed. $success = $pdf->LoadFile('qa_data/pdf/hello.pdf'); if ($success == false) { print $pdf->lastErrorText() . "\n"; $success = $pkcs11->CloseSession(); exit; } $json = new CkJsonObject(); $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 == false) { print $pdf->lastErrorText() . "\n"; $success = $pkcs11->CloseSession(); exit; } // -------------------------------------------------------------------------- // Revert to an unauthenticated session by calling Logout. $success = $pkcs11->Logout(); if ($success == false) { print $pkcs11->lastErrorText() . "\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 == false) { print $pkcs11->lastErrorText() . "\n"; exit; } print 'Success.' . "\n"; ?> |
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