In my case, the user credentials are an app id and a password. They are
set up manually, beforehand, to allow any number of app instances
running on users' devices to connect and share data.
If you want to create actual user accounts through your app and don't
want to send plain text then you're going to have to use encryption.
John
On 07/04/2013 21:52, Alex Tweedly wrote:
I'm probably missing something very obvious ....
If you don't use encryption or SSL, how do the user's credentials
initially get onto the server so that they can subsequently be checked ?
-- Alex.
On 07/04/2013 14:10, John Craig wrote:
I don't rely on SSL - to avoid any potential hassles with Apple's app
store - "Does your application use encryption?".
The scheme I did use will work happily with SSL, if the data is
sensitive, and without, for routine app data, game data, etc.
As an example, my requests to the server contain;
1/ a uuid
2/ current time
3/ md5 hash of user credentials + uuid + time
4/ any other data
The client first synchronizes it's time with the server. Each
request is only valid for 30 seconds (the server checks the time
built into the request). The server also temporarily stores the
uuid, so it can only be used once (auto deleted after 60 seconds - by
which time the request is no longer valid). The important user
credentials are never sent as plain text and each request is only
valid once - anyone snooping can't send the same request as the uuid
will be rejected. The reason for sending the uuid and time (which
are also built into the md5 hash) is so that the server can rebuild
the same hash from the user credentials in the database and verify a
'login'.
HTH
John.
On 06/04/2013 23:05, Geoff Canyon wrote:
With on-rev, how do you handle authentication/a secure connection?
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