(PHP ActiveX) Extract PKCS7 from MIME and Decrypt

Extracts the base64-encoded PKCS7 body of a MIME message to a file, and then decrypts using Chilkat Crypt2.

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

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Mime')
$mime = new COM("Chilkat.Mime");

$success = $mime->LoadMimeFile('c:/aaworkarea/EmailInBytes.txt');
if ($success != 1) {
    print $mime->LastErrorText . "\n";
    exit;
}

$success = $mime->SaveBody('c:/aaworkarea/smime.p7m');
if ($success != 1) {
    print $mime->LastErrorText . "\n";
    exit;
}

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Crypt2')
$crypt = new COM("Chilkat.Crypt2");

$success = $crypt->AddPfxSourceFile('c:/aaworkarea/my.pfx','pfxPassword');
if ($success == 0) {
    print $crypt->LastErrorText . "\n";
    exit;
}

// Indicate the public-key (PKCS7) encryption/decryption should be used:
$crypt->CryptAlgorithm = 'pki';

$inPath = 'c:/aaworkarea/smime.p7m';
$outPath = 'c:/aaworkarea/decrypted.dat';

$success = $crypt->CkDecryptFile($inPath,$outPath);
if ($success == 0) {
    print $crypt->LastErrorText . "\n";
    exit;
}

print 'Success.' . "\n";

?>