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(PHP ActiveX) How to Parse a X.509 Certificate and Extract its Public KeyDemonstrates how to load an X.509 certificate and extract the public key. Chilkat supports many certificate encodings:
<?php // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Cert') $cert = new COM("Chilkat.Cert"); // Load a DER (binary) encoded certificate. // To load from a .pem or .p7b, or any other file format that contains // just one certificate, call LoadFromFile in exactly the same way. // The LoadFromFile method automatically detects the format and loads the certificate. $success = $cert->LoadFromFile('qa_data/certs/testCert.cer'); if ($success == 0) { print $cert->LastErrorText . "\n"; exit; } // Get the public key: // pubKey is a Chilkat.PublicKey $pubKey = $cert->ExportPublicKey(); if ($cert->LastMethodSuccess != 1) { print $cert->LastErrorText . "\n"; exit; } // Examine the key type. // A PublicKey object can contain an RSA, ECC, or DSA public key. // The KeyType property will contain "rsa", "ecc", or "dsa". print 'key type = ' . $pubKey->KeyType . "\n"; ?> |
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