Thanks for the update... How far away from the Qt & or Java Cryptographic
Architecture API's are you? Regards, George Ingram

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Arjan van
de Ven
Sent: Monday, March 07, 2011 10:10 AM
To: [email protected]; [email protected]
Subject: [Meego-architecture] Some architecture changes (MSSF / Buteo / PIM
storage)

Hi,

given the events of the last few weeks, the MeeGo architects have, and still
are, revisiting various parts of the MeeGo architecture.
While I'd love to say that we have the whole situation clear, the reality is
that there still is a very complex situation. In part because just not
everything is clear yet around "who" and "what", and in part because various
parts of the MeeGo OS architecture are very tightly coupled...
it's not like MIkkado where you can pull out one stick at a time.

Having said that, three items are currently clear enough to make a final
decision on:

1) MSSF / MeeGo security framework
2) Buteo Sync
3) PIM storage (currently stored in the tracker database)



Security
=======
The security direction of MeeGo has been broken up into two different
focuses: short-term and long-term.In the short term, we want to complete the
development of key portions of the Mobile Simplified Security Framework that
allow us to have complete solutions around the areas of Access Control,
Integrity and Security Software Distribution.This will not entail *all* of
the pieces that have previously been discussed in these areas, but instead
will include a minimum subset of features that allow a coherent story across
all key security areas. For MeeGo 1.2 specifically, this means that we're
not planning on integrating the MSSF pieces that invasive or incomplete at
this point, such as the "upstart" 
integration that was communicated on this list previously.

In the long-term, we will re-evaluate the direction we are taking with MeeGo
security with a new focus on *End-User Privacy*.
While we do not intend to immediately remove the security enabling
technologies we have been including in MeeGo, all security technologies will
be re-examined with this new focus in mind.We will revisit technology
choices made for MSSF (as well as non-MSSF components that have security
implications) and make appropriate changes in these areas given this
direction change.


Buteo Sync
==========
The Buteo Sync framework in MeeGo is currently very incomplete; various
promised and needed components never materialized, and are unlikely to
materialize in the future. On the Intel side, we've found that we ended up
glueing SyncEvolution into Buteo on a regular basis to fulfill basic
customer requirements (like sync-with-google-address-book).

Because of this, and the available expertise, we have decided to start
replacing Buteo with SyncEvolution.
For MeeGo 1.2, it's not currently clear if the engineering work that this
entails will be done in time, so 1.2 might still ship with Buteo.
However, Buteo is removed as architectural component effective immediately
to avoid creating an API/ABI promise for a component that we know is being
replaced

SyncEvolution is an existing mature open source project with a history of
functionality and compatibility, and we're confident that the switch to this
project will benefit Sync in MeeGo for years to come.

PIM storage
===========
The Address book, Calendar data and Email are currently stored in a tracker
database, and accessed (officially) via a QtMobility API set.
There are a range of issues with this implementation, starting with the
complexity of adding privacy controls, the performance and scalability as
well as the completeness for doing a proper syncml sync.

Because of all these items and the available expertise, we have decided to
start replacing PIM storage with the Evolution Data Server.
This change will land together with the SyncEvolution change (due to the
intimate relationship between the storage and sync of PIM data).
This change should largely be invisible to applications since applications
are supposed to access this data via the appropriate QtMobility APIs. But to
avoid setting precedents, the lower level components will be removed from
the architecture diagrams effective immediately.

To be clear, this does not mean that "tracker" is completely removed;
tracker is still being used (together with tumbler) for indexing media on
the device. At this point we are seeing serious issues
(performance/stability) with this solution, but the first attempt will be to
fix the deficiencies rather than a replacement.

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