Can you explain QR CODE GENERATION php code ?

Hi,

I would love to understand how you generated the qrcode picture ?
My main question would be “how far we can be sure that QRCODE is generated locally and not remotely asking for a third party site to generate qrcode?”

I’ve dig into your google-authenticator.php file and found this line that I think is the good one:

		jQuery.post(ajaxurl, data, function(response) {

  			jQuery('#GA_secret').val(response['new-secret']);

  			var qrcode="otpauth://totp/WordPress:"+escape(jQuery('#GA_description').val())+"?secret="+jQuery('#GA_secret').val()+"&issuer=WordPress";

			jQuery('#GA_QRCODE').qrcode(qrcode);

 			jQuery('#GA_QR_INFO').show('slow');

  		});  	

could you explain how this is working ?

thank you

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