<?php
class DES
{
    var $key;
    var $iv;
    function __construct( $key, $iv=0 ) {
        $this->key = $key;
        if( $iv == 0 ) {
            $this->iv = $key;
        } else {
            $this->iv = $iv;
        }
    }
 
    function encrypt($str) {
        return base64_encode( openssl_encrypt($str, 'DES-CBC', $this->key, OPENSSL_RAW_DATA, $this->iv  ) );
    }
    function decrypt($str) {
        $str = openssl_decrypt(base64_decode($str), 'DES-CBC', $this->key, OPENSSL_RAW_DATA | OPENSSL_NO_PADDING, $this->iv);
        return rtrim($str, "\x1\x2\x3\x4\x5\x6\x7\x8");
    }
 
    function pkcs5Pad($text, $blocksize) {
        $pad = $blocksize - (strlen ( $text ) % $blocksize);
        return $text . str_repeat ( chr ( $pad ), $pad );
    }
}
 
$date = date('YmdHis', time());
$username = "testuser";
 
// ---- Integration environment ----
 
// Your own secret key
$secretkey = "68B0C4827C6243FFA83285AF49371977";
 
// API url
$url = "http://s...content-available-to-author-only...r.com/api/api.aspx";
 
// MD5 Signature key
$md5key = "GgaIMaiNNtg";
 
// Encryption key
$key = "g9G16nTs";
 
// Change for your currency if necessary
$currency = "THB";
 
$QS = "method=LoginRequest&Key=".$secretkey."&Time=".$date."&Username=".$username."&CurrencyType=".$currency;
$s = md5($QS.$md5key.$date.$secretkey);
 
$crypt = new DES($key);
$q = $crypt->encrypt($QS);
 
$data = array('q' => $q, 's' => $s);
 
$options = array(
    'http' => array(
        'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
        'method'  => 'POST',
        'content' => http_build_query($data)
    )
);
$context  = stream_context_create($options);
echo $result = file_get_contents($url, false, $context);
 
?>

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