PHP

Sending S/MIME Encrypted Email

Sends an encrypted email using the recipient's digital certificate from a .cer file. Chilkat2 PHP

<?php

use Chilkat2\Cert;
use Chilkat2\Email;
use Chilkat2\MailMan;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// The mailman object is used for sending and receiving email.
$mailman = new MailMan();

// Set the SMTP server.
$mailman->SmtpHost = 'smtp.comcast.net';

// Load the .cer file into a certificate object.
// When sending S/MIME encrypted email, it is the recipient's
// certificate that is used for encryption.  Only the public key
// is needed to encrypt.  The recipient is the only
// one possessing the private key, and therefore is the only
// one able to decrypt.
$cert = new Cert();
try {
    $cert->LoadFromFile('cknotes.cer');
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

// Create a new email object
$email = new Email();

$email->Subject = 'This email is encrypted';
$email->Body = 'This is a digitally encrypted mail';
$email->From = 'Chilkat Support <support@chilkatsoft.com>';
$email->AddTo('Chilkat Blog', 'admin@cknotes.com');

// Indicate that the email is to be sent encrypted.
$email->SendEncrypted = true;

// Specify the certificate to be used for encryption.
$email->SetEncryptCert($cert);

try {
    $mailman->SendEmail($email);
    echo "Mail Sent!\n";
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
}