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(PHP ActiveX) Load Certificate from Smart Card by Key UsageSee more Certificates ExamplesYou may have a smartcard or USB token that contains only 2 certificates, one for signing, and one for authentication, and you wish to load the certificate for signing. This example demonstrates how to load the 1st certificate found on a smartcard that matches the intended key usage.
<?php // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. $cert = new COM("Chilkat_9_5_0.Cert"); // If you know the smart card PIN, set it prior to loading from the smartcard/USB token. $cert->SmartCardPin = '12345678'; // To load a certificate matching an intended key usage, specify the type of usage as shown below. // // The possible key usage keywords are: // // digitalsignature // Use when the public key is used with a digital signature mechanism to support security services other than non-repudiation, certificate signing, or CRL signing. // A digital signature is often used for entity authentication and data origin authentication with integrity. // nonrepudiation // When a digital certificate's key usage includes "nonrepudiation," it implies that the certificate and its associated private key can be used to // create digital signatures that provide proof of the origin and integrity of the signed data, and the signer cannot later deny having signed the data. // Other less common usages: // certificatesigning // keyencipherment // dataencipherment // crlsigning // secureemail // serverauthentication // clientauthentication // codesigning // timestamping $success = $cert->LoadFromSmartcard('keyusage=nonrepudiation'); if ($success == 0) { print $cert->LastErrorText . "\n"; print 'Certificate not loaded.' . "\n"; exit; } print 'Found: ' . $cert->SubjectDN . ' serial=' . $cert->SerialNumber . "\n"; ?> |
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