(PHP Extension) AddDetachedSignaturePk

Demonstrates 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.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux

<?php

include("chilkat.php");
// Use "chilkat_9_5_0.php" for versions of Chilkat < 10.0.0

// 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";

?>