java - Secure jsonp ajax calls -

i have developed restful web-service returns jsonp objects. using web-service in simple html page using ajax calls. means @ client side there html page access web-service. no server used @ client side. running page browser. problem can access web-service have implemented. want make secure kind of authentication. have read solution send token along request @ client side don't have server or anything, simple html page. please me solution secure web-service.

javascipt function call webseive:

function calculatepremium(investmentamount,month, premium) { var url = "http://192.1.200.107:8080/webresources/avestwebservice/getpremium"; var payloaddata = {     amount: $("#"+investmentamount).val(),     period: $("#"+month).val() };  $.ajax({     type: "get",     url: url,     cache:false,                  crossdomain:true,     data: payloaddata,     datatype: "jsonp",     success: function (data,textstatus,jqxhr) {         $("#"+premium).val(data.premium);     },     error: function (jqxhr,textstatus,errorthrown) {         alert('error occured');     } }) }; 

with ajax request can send authentication headers

beforesend: function(xhr) {     xhr.setrequestheader("authorization", "basic " + "username:password"); }, 

or insert authentication data with:

$.ajax({     type: "get",     username: "user",     password: "password",     .... } 

but have handle authentication in web-service. or add var payloaddata custom authentication data check web-service.

you should consider make connection under https if don't want other people intercept authentication packets