Mobile Apps - Saving Registry WiFi configuration

Asked By Keaven Pineau

01-Feb-10 09:50 AM

Dear all,
I would like to know where is in the registry all the WiFi (sd card)
configuration information including the preferred list server.

Can anyone provide me that?

Thank you,

01-Feb-10 01:48 PM

I think that, because there are WEP keys and other security information,
that is not published and, even if it were, you would not be able to read the
contents of the keys.  What are you trying to achieve?

Paul T.

01-Feb-10 01:58 PM

The project I am working are not using the hive registry but they mentionned
the fact that the WiFi configuration is not retained during a power cycle.
I have done a driver with a thread that is waiting on registry keys changes
and save them into a file.  This driver simulates the hive registry
configuration.  I was wondering if we could dump the wifi related key into a
file , the encrypted data, so when the power cycle is happening we could
restore the keys from the file.

I know that it will better to use the hive registry configuration but looks
like they don`t want it since they had bad experience with it in the past on
mobile device and emergency shutdown force by the pmic.

01-Feb-10 04:36 PM

Well, you could *try* this:

1. Make sure that the MasterKeysInRegistry key is set in your default boot
registry so that all of the encrypted stuff that would otherwise end up in
the object store is in the registry.

2. Capture a list of all of the keys saved when you add a new SSID to the
WiFi configuration.

3. Try to generalize from what you saw in #2 and save anything in a similar
path in the registry, when it is written.

Paul T.

02-Feb-10 08:00 PM

If you put the registry hive on a partition configured with a
transaction-safe file system (e.g. TFAT), then an emergency shutdown
should not corrupt the registry (assuming that is what the 'bad
experience' was).
As you seem to be aware, using a hive based registry is (IMO) the
correct way forward here.

regards,
Rik A