client side encryption upon form submission

encrypt.js

$(document).ready(function(){
   $('form').submit(function( event ) {
     var encrypt = new JSEncrypt();
     $('[data-encrypt]').each(function(){
       var unencrypted = $(this);
       encrypt.setKey($('#public_key').attr('data-value'));
       var encrypted = encrypt.encrypt(unencrypted.val());
       if(encrypted) {
         unencrypted.val(encrypted);
       }
     })
   });
 });