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(PHP ActiveX) IMAP Download and Verify Signed (S/MIME) Email

Demonstrates how to download and verify digitally signed S/MIME email.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

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

$imap = new COM("Chilkat_9_5_0.Imap");

// Connect to an IMAP server.
// Use TLS
$imap->Ssl = 1;
$imap->Port = 993;
$success = $imap->Connect('imap.someMailServer.com');
if ($success != 1) {
    print $imap->LastErrorText . "\n";
    exit;
}

$success = $imap->Login('myLogin','myPassword');
if ($success != 1) {
    print $imap->LastErrorText . "\n";
    exit;
}

// Select an IMAP mailbox
$success = $imap->SelectMailbox('Inbox');
if ($success != 1) {
    print $imap->LastErrorText . "\n";
    exit;
}

// We can choose to fetch UIDs or sequence numbers.
$fetchUids = 1;

// Get the message IDs of all the emails in the mailbox
// messageSet is a Chilkat_9_5_0.MessageSet
$messageSet = $imap->Search('ALL',$fetchUids);
if ($imap->LastMethodSuccess != 1) {
    print $imap->LastErrorText . "\n";
    exit;
}

// Scan for emails with attachments, and save the attachments
// to a sub-directory.
$i = 0;
while ($i < $messageSet->Count) {

    $uid = $messageSet->GetId($i);
    print 'uid: ' . $uid . "\n";

    // email is a Chilkat_9_5_0.Email
    $email = $imap->FetchSingle($uid,1);

    // The security layers of signed and/or encrypted emails
    // are automatically "unwrapped" when loaded into
    // a Chilkat email object.
    // An application only needs to check to see if an email
    // was received signed or encrypted, and then examine
    // the success/failure.  For example:
    if ($email->ReceivedSigned == 1) {

        print 'This email was signed.' . "\n";

        // Check to see if the signatures were verified.
        if ($email->SignaturesValid == 1) {
            print 'Digital signature(s) verified.' . "\n";

            print 'Signer: ' . $email->SignedBy . "\n";

            // The certificate used for signing may be obtained
            // by calling email.GetSignedByCert.
            // cert is a Chilkat_9_5_0.Cert
            $cert = $email->GetSignedByCert();
            if ($email->LastMethodSuccess != 1) {
                print 'Failed to get signing certificate object.' . "\n";
            }
            else {
                print 'Signing cert: ' . $cert->SubjectCN . "\n";

            }

        }
        else {
            print 'Digital signature verification failed.' . "\n";
        }

    }

    $i = $i + 1;
}

// Disconnect from the IMAP server.
$success = $imap->Disconnect();


?>

 

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