CONTENTS

 1     Scope
 2     References
        2.1     Normative reference
        2.2     Bibliographic reference
 3     Terms and definitions
 4     Abbreviations
 5     System overview
 6     Application in the MPEG/DVB environment
        6.1     MPEG and ETR 289 specifications
                  6.1.1     Scrambling
                  6.1.2     PSI/SI
                 6.1.3      Conditional access messages
        6.2     DSNG specifications
                  6.2.1     Mode 0
                  6.2.2     Mode 1
                  6.2.3     Modes 2 and 3
                 6.2.4      Summary
Annex A – Practical implementation permitting interoperability
        A.1     Introduction
                  A.1.1     Overview
                  A.1.2     Nomenclature
                  A.1.3     Security requirements
        A.2     Functional requirements
                  A.2.1     Modes of operation
                  A.2.2     Mode 0
                  A.2.3     Mode 1
                  A.2.4     Modes 2 and 3
Appendix I – General description of an open conditional access system based on OKAPI
        I.1     Public key crypto-systems
        I.2     Certificate technology
        I.3     Practical operation with OKAPI
                  I.3.1     Introduction
                  I.3.2     Functionality of the Network Management Centre
                  I.3.3     Implementation of the CADs
                  I.3.4     Implementation of the interface 1
                  I.3.5     Implementation of the interface 4
                  I.3.6     Main bidirectional protocols