PinDecrypt - Convert encrypted data with DES_ECB using a key

PinDecrypt.php

<?php

/**
 *
 *  PinDecrypt - Convert encrypted data with DES_ECB using a key
 *
 *  @param String $Key  - The key with which the data was encrypted.
 *                        If the provided key size is not supported by the cipher,
 *                        the function will emit a warning and return FALSE
 *  @param String $Data - The data that will be decrypted with the given cipher and mode.
 *                        If the size of the data is not n * blocksize, the data will be padded with '\0'.
 *
 *  @return String      - Returns the decrypted data as a string or FALSE on failure.
 *
 */ 

function PinDecrypt( $Key, $Data )
{
    $cipher = MCRYPT_DES;
    $key    = pack('H*', $Key);
    $data   = pack('H*', $Data);
    $mode   = MCRYPT_MODE_ECB;
    return bin2hex( mcrypt_decrypt ( $cipher , $key , $data , $mode, NULL ) );
}

?>