[AS3]as3解密加密算法运用as3crypto类

代码实例参考：flex客户端与java服务端通信,要互相解密加密，客户端用的as3Crypto进行解密加密。代码参考：

as3crypto：一个as3的关于加解密的开源项目
http://code.google.com/p/as3crypto/

<?xml version="1.0" encoding="utf-8"?> 
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"  
                           xmlns:s="library://ns.adobe.com/flex/spark"  
                           xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600"> 
        <fx:Declarations> 
                <!-- 将非可视元素（例如服务、值对象）放在此处 --> 
        </fx:Declarations> 
        <fx:Script> 
                <![CDATA[ 
                        import com.hurlant.crypto.symmetric.CBCMode; 
                        import com.hurlant.crypto.symmetric.DESKey; 
                         
                        import mx.utils.Base64Decoder; 
                        import mx.utils.Base64Encoder; 
 
                         
                        private var des:DESKey; 
                        private var cbc:CBCMode; 
                        private var key:ByteArray; 
                        private var iv:ByteArray; 
                        private var tmpByteArray:ByteArray; 
                         
                        private function clickHandler():void 
                        { 
                                key= new   ByteArray(); 
                                key.writeUTFBytes("135daac"); 
                                 
                                iv= new   ByteArray(); 
                                iv.writeUTFBytes("3534ftyywwer"); 
                                 
                                des=new DESKey(key); 
                                cbc = new   CBCMode(des); 
                                cbc.IV = iv; 
                                tmpByteArray=convertStringToByteArray(test.text);     
                                cbc.encrypt(tmpByteArray); 
                                var $base64:Base64Encoder = new Base64Encoder();    
                                $base64.insertNewLines =   false;//该值等于true时，输出的结果会自动换行，默认为true，    
                                $base64.encodeBytes(tmpByteArray);//这里注意，如果想加密中文就不要使用$base64.encode();    
                                jiami.text =  $base64.toString(); 
                        } 
                        private function decClickHandler():void 
                                 
                        { 
                                var $base64D:Base64Decoder = new Base64Decoder();    
                                $base64D.decode(jiami.text);//这里注意，如果想加密中文就不要使用$base64.encode(); 
                                tmpByteArray=$base64D.toByteArray(); 
                                cbc.decrypt(tmpByteArray); 
                                jiemi.text = convertByteArrayToString(tmpByteArray);//输出结果 
                        } 
                         
                        private function convertStringToByteArray(string:String):ByteArray 
                        { 
                                var bytes:ByteArray; 
                                if ( string) { 
                                        bytes = new ByteArray(); 
                                        bytes.writeUTFBytes(string);// writeUTFBytes(value:String) 将 UTF-8 字符串写入字节流; 
                                } 
                                return bytes; 
                        } 
                         
                        private function convertByteArrayToString(bytes:ByteArray):String 
                        { 
                                var str:String; 
                                if ( bytes ) { 
                                        bytes.position = 0; // 在将 ByteArray 转换成 String中应注意将 bytes 的 position 设置为 0，切记； 
                                        str = bytes.readUTFBytes(bytes.length); // readUTFBytes(length:uint):从字节流中读取一个由 length 参数指定的 UTF-8 字节序列，并返回一个字符串; 
                                } 
                                return str; 
                        } 
                ]]> 
        </fx:Script> 
         
        <s:TextInput x="10" y="10" id="test"/>  
        <s:Button x="19" y="58" label="cuplayer.com加密" click="clickHandler()"/>  <s:Label id="jiami" x="135" y="58"/> 
        <s:Button x="19" y="91" label="cuplayer.com解密" click="decClickHandler()"/> <s:Label id="jiemi" x="135" y="91"/> 
         
         
</s:Application>