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AC051 OKAPI

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Multimedia Domain
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Open Kernel for Access to Protected Interoperable Interactive Services

Main Objective
The main objective of the OKAPI project is to describe and to settle the environment for the implementation of open, interoperable and equitable conditional access systems.
In an equitable approach the management of the scrambling keys is achieved through the use of Trusted Third Parties (TTPs).
The proposed solution relies on public key cryptography and on secure software downloading into security modules.
Several very high scale projects, i.e. DAVIC and DVB, aim at the interoperability for conditional access systems. Regarding these projects, the OKAPI project position could be summarised as follows: OKAPI should promote the solutions that really improve interoperability and openness. It should also propose solutions and demonstrate their accuracy regarding both security and market place aspects.

Technical Approach
The technical approach is summarised as follows:

The OKAPI protocols use public key cryptography developments to provide both high security and interoperability. This solution must be compliant with the new standards or recommendations. Infrastructure implementing the protocols is developed, enabling certification, privacy, consumer and service provider protection.
The security of the cryptographic and communication protocols is validated with Lotos. The specifications describe functionality of the modules for each actor: user, service provider, TTP's together with guidelines to their implementation. Instances of these modules are then implemented within trials. This allows on the ground test of the solution.
The new developments in conditional access systems interoperability suggest that the next step would probably be the download of part or whole of a system. OKAPI deeply studies this solution, analysing the hardware requirements, the logical security means for the service provider protection, and the integration in the actual OKAPI protocols. OKAPI should be able to provide major contributions when the standardisation bodies start to consider downloading.

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Summary of Trial
Three main trials are planned:

Key Issues
Achievements
The project has completed its preliminary version of a conditional access system based on a DAVIC compliant platform and on IP connection to certification authorities. The Internet simulator for TTP based on conditional access is now operational, and the test bed for OKAPI kernel evaluation is set up on a Campus Net.
OKAPI expects to provide the answer to issues regarding Access Control to Multimedia services in an Open environment.

Expected Impact
OKAPI will have an impact on DAVIC and DVB security specifications, by actively promoting its Kernel as a basis for standardising an Access Control system.

Contact:

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List of Domains and Chains
Multimedia Domain
Service Integration Chains

List of participants

B
Université Catholique de Louvain
P
ADETTI
GR
Alphatec
F
CCETT
I
CSELT
D
Deutsche Bundespost Telekom
B
EBU / RTBF
CH
Ecole Polytechnique Fédérale de Lausanne
D
Fraunhofer Institute Darmstadt
B
Pastel
NL
Philips Nederlandse Bedrijven
B
Université de Liège
GR
University of Thessaloniki