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(PHP Extension) AddDetachedSignaturePkDemonstrates how to add a detached signature using a certifcate and it's corresponding private key. The easiest way of doing it is when both the certificate and private key are contained together within a PFX (.pfx or .p12) file. This example demonstrates how to use the certificate and its corresponding private key when they are stored in separate files -- a .cer for the certificate, and a .pem for the private key.
<?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 assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. $mime = new CkMime(); // Load the certificate from a .cer file. $cert = new CkCert(); $success = $cert->LoadFromFile('aaworkarea/myCert.cer'); if ($success == false) { print $cert->lastErrorText() . "\n"; exit; } // Load the private key from an encrypted PEM file. // (A private key can be loaded from other file formats also..) $privKey = new CkPrivateKey(); $success = $privKey->LoadEncryptedPemFile('aaworkarea/myPrivateKey.pem','myPassword'); if ($success == false) { print $privKey->lastErrorText() . "\n"; exit; } $success = $mime->SetBodyFromPlainText('This is the plain-text MIME body.'); // Sign the MIME (adds a PKCS7 detached signature) $success = $mime->AddDetachedSignaturePk($cert,$privKey); if ($success == false) { print $mime->lastErrorText() . "\n"; exit; } // Save the S/MIME to a file. $success = $mime->SaveMime('aaworkarea/signedMime.txt'); if ($success == false) { print $mime->lastErrorText() . "\n"; exit; } print 'success!' . "\n"; ?> |
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