Sorry, I guess I was referring to the wrong things.
Instead of authentication, I actually wanted to do authorization, so
that I can access the data the user have stored in Google
applications. In my case, I wanted to access their App Engine data
(such as the application IDs that they have, etc2).

On Apr 18, 4:09 pm, formtester <[email protected]> wrote:
> Hi Mandar,
>
> I tried using the Google Account auth [OAuth, ClientLogin]. However,
> it seems that you can only get access to some services (not all), and
> it seems that App Engine Services is not part of those services that
> you can access.
> Is that what you mean by Google Account auth?
>
> On Apr 18, 12:16 pm, mandar khadilk <[email protected]> wrote:
>
>
>
>
>
> > Two diff ways can be used.
>
> > 1. Google Account auth. There is a simple example somewhere on the
> > tutorial on this. Should be easy.
>
> > 2. Another way (which I am using as not all my users have google
> > account), is to create local User account and hash of a password. Only
> > client knows the password.
>
> > Then create a session when user auths. Send session id back and cache
> > it. You can do a lot of fancy security stuff with that (out of the
> > scope of this reply). Then every call needs to have session id.
>
> > I would also include a some integrity check by HMACing the payload
> > etc. Also, one can use a clever JSESSION cookie usage if on the
> > browser.
>
> > -mandar
>
> > On Apr 17, 6:26 pm, formtester <[email protected]> wrote:
>
> > > Still couldn't figure out how to authenticate myself with App Engine
> > > service, and get data from it.
> > > Anyone ever did this before?
>
> > > On Apr 15, 12:48 am, formtester <[email protected]> wrote:
>
> > > > Hi,
>
> > > > I'm looking for a Google API that will let me talk to App Engine
> > > > Service, and get user's information regarding their App Engine
> > > > service. For example:
> > > > Given a username and password, I will then authenticate these
> > > > informations with Google service, and if authenticated, I will then
> > > > talk to App Engine service, and ask for this specific username
> > > > information (such as if this user have an application ID in Google App
> > > > Engine).
>
> > > > Is it possible to do so? if so, is there any example to do this?
>
> > > > Thanks in advance!
>
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