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PHP Extension Examples

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(PHP Extension) Sending S/MIME Encrypted Email

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

Chilkat PHP Downloads

PHP Extension for Windows, Linux, MAC OS X,
Alpine Linux, Solaris, OpenBSD, FreeBSD,
and Linux armhf/aarch64

<?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");

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

//  Any string argument automatically begins the 30-day trial.
$success = $mailman->UnlockComponent('30-day trial');
if ($success != true) {
    print $mailman->lastErrorText() . "\n";
    exit;
}

//  Set the SMTP server.
$mailman->put_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 CkCert();
$success = $cert->LoadFromFile('cknotes.cer');
if ($success != true) {
    print $cert->lastErrorText() . "\n";
    exit;
}

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

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

//  Indicate that the email is to be sent encrypted.
$email->put_SendEncrypted(true);

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

$success = $mailman->SendEmail($email);
if ($success != true) {
    print $mailman->lastErrorText() . "\n";
}
else {
    print 'Mail Sent!' . "\n";
}


?>

 

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