【文件属性】：
文件名称：as3.0 IDEA数据加密方法
文件大小：6KB
文件格式：AS
更新时间：2015-01-03 11:45:42
as3 网络加密 IDEA算法 flash
package socket{
import flash.utils.ByteArray;
public class IDEA{
public var ory:ByteArray;
public var ary:Array;
public var dekey:Array;
public var enkey:Array;
public function IDEA() {
ary=new Array();
dekey=new Array();
enkey=new Array();
ory=new ByteArray();
}
public function TraceEnKey():void{
trace(enkey.length,enkey);
}
public function TraceDeKey():void{
trace(dekey.length,dekey);
}
public function TraceOry():void{
trace(ory);
}
public function TraceAry():void{
trace(ary);
}
public function Low16(mm:uint):uint {
return (mm&0xffff);
}
public function inv(mm:uint):uint {
var t0:uint;
var t1:uint;
var q:int;
var yy:uint;
if (mm<=1) {
return Low16(mm);
}
var long:uint=new uint(0x10001);
t1=Low16(long/mm);
yy=Low16(long%mm);
if (yy==1) {
return Low16(1-t1);
}
t0=1;
do {
q=mm/yy;
mm=mm%yy;
t0+=q*t1;
if (mm==1) {
return Low16(t0);
}
q=yy/mm;
yy=yy%mm;
t1+=q*t0;
} while (yy!=1);
return Low16(1-t1);
}
public function en_key_idea(userkey:Array,zz:Array):void {
var i:int;// 进行16位运算
var j:int;
var iu:int=new int();
for (i=0; i<8; i++) {
zz[i]=Low16(userkey[i]);
}
iu=0;
for (j=0; i<52; i++) {
j++;
zz[iu+j+7]=Low16((zz[iu+(j&7)]<<9)|(zz[iu+(j+1&7)]>>7));
iu+=j&8;
j&=7;
}
}