/home/joan/000www/repo/spirit/1.0/core/extensions/security/security.php

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<?php
session_register("rsa_key");
abstract class Security {

        public static function generateRSAKey($kumbia){
                $h = date("G")>12 ? 1 : 0;
                $time = uniqid().mktime($h, 0, 0, date("m"), date("d"), date("Y"));
                $key = sha1($time);
                $_SESSION['rsa_key'] = $key;
                $xCode = "<input type='hidden' id='rsa32_key' value='$key' />\r\n";
                if($kumbia) {
            echo $xCode;    
                } else { 
            return $xCode;
        }
                
                return null;
        }

        public static function createSecureRSAKey($kumbia=true){
                $config = Config::read('config.ini');
                if($config->kumbia->secure_ajax){
                        if($_SESSION['rsa_key']){
                                if((time()%8)==0){
                                        return self::generateRSAKey($kumbia);
                                } else {
                                        if($kumbia){
                                            echo "<input type='hidden' id='rsa32_key' value=\"{$_SESSION['rsa_key']}\"/>";
                                        } else{
                                            echo "<input type='hidden' id='rsa32_key' value=\"{$_SESSION['rsa_key']}\"/>";
                                        }
                                            
                                }
                        } else {
                                return self::generateRSAKey($kumbia);
                        }
                }
                return null;
        }

}

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