(PHP ActiveX) AES Encryption ECB Mode with PKCS7 Padding

Duplicates the following C# code:

public static byte[] DecryptBySymmetricKey(string encryptedText, byte[] key)
  {
     string keyAsBase64 = Convert.ToBase64String(key);

     byte[] dataToDecrypt = Convert.FromBase64String(encryptedText);
     var keyBytes = key;
     AesManaged tdes = new AesManaged();
     tdes.KeySize = 256;
     tdes.BlockSize = 128;
     tdes.Key = keyBytes;
     tdes.Mode = CipherMode.ECB;
     tdes.Padding = PaddingMode.PKCS7;
     ICryptoTransform decrypt__1 = tdes.CreateDecryptor();
     byte[] deCipher = decrypt__1.TransformFinalBlock(dataToDecrypt, 0, dataToDecrypt.Length);
     tdes.Clear();
     string EK_result = Convert.ToBase64String(deCipher);
     return EK_result;
}

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.

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

// In the C# code above that is to be duplicated here, use the base64 encoded key.
$keyAsBase64 = '...';
$encryptedBytesAsBase64 = '....';

$crypt->KeyLength = 256;
$crypt->CryptAlgorithm = 'AES';
$crypt->CipherMode = 'ecb';
$crypt->PaddingScheme = 0;
$crypt->SetEncodedKey($keyAsBase64,'base64');

$crypt->EncodingMode = 'base64';

// Pass the base64 representation of the encrypted data.
// (The EncodingMode indicates you are passing base64.)
$EK_result = $crypt->decryptStringENC($encryptedBytesAsBase64);

print $EK_result . "\n";

?>