1、des加密解密

百度，问人，都没能把swift的des加密整出来，只有后面熟悉语言了自己再写，现在就只能通过使用oc的加密解密来实现des

OC-DES加密解密

在桥接头文件中importCommonCrypto.h文件（swift使用oc的，百度看看就能明白）

实例化

let decryptDES = CommonCrypto();

解密：

let json:NSString = decryptDES.getDecryptWithString(string,keyString: key,ivString: key);

decryptDES.getEncryptWithString<span style="font-family: Menlo;">(string,ivString: key);</span>

这里用的3des，key用同一个

do{
                let json_b : AnyObject! = try NSJSONSerialization.JSONObjectWithData(data,options: NSJSONReadingOptions.AllowFragments) as! NSDictionary;
                print(json_b.objectForKey("Message"))
                if json_b.objectForKey("Result") as! String == "0"{
                    let Params : AnyObject! = json_b.objectForKey("Params")
                    for var i=0;i<Params.count;++i{
                        var child = Dictionary<String,AnyObject>();
                        child["ACTIVITY_TITLE"] = Params[i].objectForKey("ACTIVITY_TITLE") as! String
                        child["BEGIN_DATE"] = Params[i].objectForKey("BEGIN_DATE") as! String
                        child["FIELD1"] = Params[i].objectForKey("FIELD1") as! String
                        child["ITEM_KEY"] = Params[i].objectForKey("ITEM_KEY") as! String
                        child["ORG_NAME"] = Params[i].objectForKey("ORG_NAME") as! String
                        child["PRO_TITLE"] = Params[i].objectForKey("PRO_TITLE") as! String
                        child["TASKID"] = Params[i].objectForKey("TASKID") as! String
                        child["PRO_CODE"] = Params[i].objectForKey("PRO_CODE") as! String
                        self.group[i] = child
                    }
                    dispatch_async(dispatch_get_main_queue(),{ () -> Void in
                        self.loading.stopAnimating();
                        self.ordertableview.reloadData();
                    })
                }else{
                    dispatch_async(dispatch_get_main_queue(),{ () -> Void in
                        self.loading.stopAnimating();
                        self.login_alert((json_b.objectForKey("Message") as? String)!);
                    })
                }
            }catch{
                dispatch_async(dispatch_get_main_queue(),{ () -> Void in
                    self.loading.stopAnimating();
                    self.ordertableview.reloadData();
                })
            }

 dispatch_async(dispatch_get_main_queue(),{ () -> Void in
                    self.ordertableview.reloadData();
                })