Should i use public/private key encryption in this case?
<p>I have an iPhone app and a backend php web app.</p>

<p>The php site stores some information and i have to use the iPhone app to retrieve that data and show it in it.</p>

<p>So, suppose the iphone app has to show a list of houses for a given user, it would call the folllowing php script</p>

<p><a href="http://example/process.php?user=300" rel="nofollow">http://example/process.php?user=300</a></p>

<p>That script makes the sql query and returns an xml with the houses' data.</p>

<p>Should i at any point encrypt anything to prevent spoofing?</p>

<p>Another case, for example admob for each app generates a "publisher id" that is used in the iphone app to "connect" the app with the web app, is that "publisher id" used as a private key to encrypt/decrypt the data sent/received?</p>

<p>Thanks</p>
