学生菜鸟一枚，请教一下JavaScript怎么进行RSA64位加密

一个JS的课设，但是之前完全不会js，有一个功能要求是在web上添加用户 设置密码时要求把密码（下面代码段里的password）加密为rsa存储。请问大神们在js语法里怎么完成呢？在下谢过啦。
代码如下
//确定
function confirm(){
var userName = document.getElementById("username").value;
var password = document.getElementById("password").value;
var truename = document.getElementById("truename").value;
var tel = document.getElementById("tel").value;
var fax = document.getElementById("fax").value;
var email = document.getElementById("email").value;
var address = document.getElementById("address").value;
var myDate = new Date();
var chgDate=myDate.toLocaleTimeString(); //获取当前时间
//传到action处理数据
var param = "&userEntity.userName="+userName+"&userEntity.passWord="+password+"&userEntity.trueName="+truename
+"&userEntity.telephoneNumber="+tel+"&userEntity.fax="+fax
+"&userEntity.email="+email+"&userEntity.address="+address;
document.location = "userAction!onAdd.action?userEntity=" + param;
}