ISO 26430-1:2008 デジタルシネマ（Dシネマ）操作—パート1：主要な配信メッセージ | ページ 2

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.

ISO 26430-1 was prepared by the Society of Motion Picture and Television Engineers (as SMPTE 430-1-2006) and was adopted, under a special"fast-track procedure", by Technical Committee ISO/TC 36, Cinematography, in parallel with its approval by the ISO member bodies.

ISO 26430 consists of the following parts, under the general title Digital cinema (D-cinema) operations:

• Part 1: Key delivery message
• Part 2: Digital certificate
• Part 3: Generic extra-theater message format

1 Scope

This specification defines a"Key Delivery Message" (KDM) for use in Digital Cinema (D-Cinema) systems. The KDM has been designed to deliver security parameters and usage rights between D-Cinema content processing centers (e.g. from post production to distribution, or from distribution to exhibition). The KDM carries fundamentally three information types:

• • Content keys for a specified Composition Play List (CPL).
• • Content key parameters - primarily the permitted key usage date/time window.
• • The Trusted Device List (TDL) which identifies equipment permitted to use the content keys.

The KDM is based on the D-Cinema generic Extra-Theater Message (ETM) format [ЕТМ]. It uses XML to represent the information about the content decryption keys and TDLs, and provides security using standardized XML encryption and signature primitives. The KDM message uses X.509 digital certificates, specified in [D-Cinema Digital Certificate], to provide authentication and trust.

2 Normative References

The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of the standards indicated below.