(PHP ActiveX) Example: Mime.GetDecryptCertInfo method

Demonstrates the GetDecryptCertInfo method.

Note: This example requires Chilkat v11.4.0 or greater.

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

$success = 0;

$mime = new COM("Chilkat.Mime");

// Load MIME that is has Content-Type like this:
// Content-Type: application/pkcs7-mime; smime-type="enveloped-data"; name="smime.p7m"; smime-type="enveloped-data"
$success = $mime->LoadMimeFile('qa_data/mime/enveloped_data.eml');
if ($success == 0) {
    print $mime->LastErrorText . "\n";
    exit;
}

// Get information about the certificate that would be needed to decrypt.
// An enveloped-data can potentially be decrypted by multiple certificates if it was encrypted in a way that allows it,
// but in most cases, only a single certificate with associated private key (that of the message recipient) is possible.
$json = new COM("Chilkat.JsonObject");
$success = $mime->GetDecryptCertInfo($json);
if ($success == 0) {
    print $mime->LastErrorText . "\n";
    exit;
}

$json->EmitCompact = 0;
print $json->emit() . "\n";

// Sample output:

// {
//   "recipientInfo": [
//     {
//       "serial": "****",
//       "issuerCN": "****"
//     }
//   ]
// }

// Get each certificate's information like this:

$i = 0;
$count = $json->SizeOfArray('recipientInfo');
while ($i < $count) {
    $json->I = $i;
    $serial = $json->stringOf('recipientInfo[i].serial');
    $issuerCN = $json->stringOf('recipientInfo[i].issuerCN');
    $i = $i + 1;
}


?>