ETSI - PRETS 300 840
Telecommunications Security; Integrated Services Digital Network (ISDN); Confidentiality System for Audiovisual Services
| Organization: | ETSI |
| Publication Date: | 1 January 1997 |
| Status: | inactive |
| Page Count: | 24 |
scope:
A privacy system consists of two parts, the confidentiality mechanism or encryption process for the data, and a key management subsystem.
This European Telecommunications Standard (ETS) is based on ITU-T Recommendation H.233 [1] and describes the confidentiality part of a privacy system suitable for use in narrowband audio-visual services conforming to ITU-T Recommendation H.221 [2], H.230 [3], H.234 [4], and H.242 [5]. Although an encryption algorithm is required for such a privacy system, the specification of such an algorithm is not included in this ETS. The system caters for more than one specific algorithm.
The confidentiality system is applicable to point-to-point links between terminals or between a terminal and a Multipoint Control Unit (MCU); it may be extended to multipoint working in which there is no decryption at the MCU, but this is for further study.
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