POP3 Read S/MIME Encrypted Email

Read S/MIME encrypted email.

Download Chilkat Email ActiveX

<?php

//  The mailman object is used for receiving (POP3)
//  and sending (SMTP) email.
$mailman = new COM("Chilkat.MailMan2");

//  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 POP3 server's hostname
$mailman->MailHost = 'mail.chilkatsoft.com';

//  Set the POP3 login/password.
$mailman->PopUsername = 'myLogin';
$mailman->PopPassword = 'myPassword';

//  If running on Microsoft Windows, the Chilkat mailman
//  will automatically search the registry-based certificate stores
//  for matching certificates and private keys required for
//  decryption.  However, on Linux, MAX OS X, and other
//  operating systems, no such thing exists.  Therefore, you'll
//  need to specify one or more PFX (.p12 / .pfx) files as
//  sources for locating the certs required for decyrption.
$success = $mailman->AddPfxSourceFile('/pfxFiles/certs_and_keys_1.pfx','pfxPassword1');
if ($success != true) {
    print $mailman->lastErrorText() . "\n";
    exit;
}

$success = $mailman->AddPfxSourceFile('/pfxFiles/certs_and_keys_2.pfx','pfxPassword2');
if ($success != true) {
    print $mailman->lastErrorText() . "\n";
    exit;
}

//  ...
//  Note: On MS Windows, it is not required to provide PFX sources
//  if the needed certs and private keys are already installed
//  on the system (in the registry-based certificate stores).

//  Copy the all email from the user's POP3 mailbox
//  into a bundle object.  The email remains on the server.
// bundle is a Chilkat.EmailBundle2
$bundle = $mailman->CopyMail();
if (is_null($bundle)) {
    print $mailman->lastErrorText() . "\n";
    exit;
}

//  S/MIME security envelopes are automatically "unwrapped"
//  when a message is retrieved from the server. Signed emails are automatically verified, and
//  encrypted emails are automatically decrypted, restoring the email to the original state before
//  signing and/or encrypting. Information about the signing and encrypting certificates can be
//  retrieved from the Email object (methods: GetSignedByCert, GetEncryptedByCert;
//  properties: SignedBy, EncryptedBy, SignaturesValid, Decrypted, ReceivedSigned,
//  ReceivedEncrypted).

//  Loop over the bundle,

for ($i = 0; $i <= $bundle->MessageCount - 1; $i++) {

    // email is a Chilkat.Email
    $email = $bundle->GetEmail($i);

    print $email->from() . "\n";
    print $email->subject() . "\n";

    //  At this point, if the email was signed and/or encrypted, it is already "unwrapped", i.e.
    //  the email is already decrypted and in a state as if it were never signed or encrypted.
    //  You may check to see if the email was received encrypted or signed, and if so,
    //  whether it was successfully unwrapped and who signed or encrypted it:
    if ($email->ReceivedEncrypted == true) {

        print 'This email was encrypted when received.' . "\n";
        if ($email->Decrypted == true) {
            print 'This email was successfully decrypted.  It was encrypted by:' . "\n";
            print $email->encryptedBy() . "\n";
        }
        else {
            print 'This email was not decrypted.' . "\n";
        }

    }

    if ($email->ReceivedSigned == true) {

        print 'This email was signed when received.' . "\n";
        if ($email->SignaturesValid == true) {
            print 'The signature was verified.  It was signed by:' . "\n";
            print $email->signedBy() . "\n";
        }
        else {
            print 'The signature verification failed.' . "\n";
        }

    }

    //  The email's body, HTML body, attachments, etc.
    //  are decrypted and available just like any non-encrypted email.

    print '--' . "\n";

}


?>