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Glossary

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E

ETSI

Short for European Telecommunications Standards Institute. An independent, non-profit organization whose mission is to produce telecommunications standards for today and for the future. See www.etsi.org

Encryption

The process of making a message unintelligible for all who do not have the proper key. See also decryption.

Entitlement

Access criteria authorisations. See also EMM.

EPG

Short for Electronic Program Guide. EPG is a server/application that offers consumers information about present and following programs.

EMM Server

HTTP Server to deliver EMMs upon request ("pull") from the CA stream client.

Encoder

A device that converts an audio or video signal to a specific streaming format, e.g. MPEG-2. The conversion typically includes compression and/or scrambling.

Embedded CA

CA application embedded in an STB.

EMM

Short for Entitlement Management Message. Encrypted messages sent to the smart card to authorise it for certain access criteria. The EMM contains the actual authorisation data (i.e. entitlements).

EIT

Short for Event Information Table. The EIT provides information in chronological order regarding the events contained within each service. This includes information such as event name, start time, duration, etc. EIT is normally presented by an EPG.

ECM

Short for Entitlement Control Message. Encrypted message that contains access criteria and control words (CWs). The ECM is decrypted and checked against the access criteria in order to provide authorisation. If authorisation is granted, the CW will be released.