Digital Cinema Initiatives
DCI Memorandum on RNG Revocation and Related NIST and FIPS Developments
Approved 16 March 2017
On January 1, 2016, the Random Number Generator (RNG) used by the D-Cinema industry for content integrity validation became disallowed under NIST requirements for FIPS-mode Cryptographic Module (CM)
operation. Additionally, the RNG historically used for Media Block (MB) RSA key generation has also been
revoked. As a result, all existing MBs have been moved from the NIST "Active Validation" list to the
"Historical Validation" list.
Click here for the complete: DCI Memorandum on RNG Revocation and Related NIST and FIPSDevelopments (PDF)
DCI Initiatives 9 July 2014
Digital Cinema Initiatives (DCI) provides detail on three of its efforts in the areas of new projection light sources, 3D subtitle rendering and standardized audio formats that are intended to ensure interoperability of distribution packages.
Click here for the DCI Initiatives, dated 9 July 2014 (PDF)
DCI-MMB Architecture Description
Approved 26 June 2014
The existing DCI Digital Cinema System Specification (DCSS) security architecture is based on a single Image Media Block (IMB) per projector per auditorium. This is an introduction to an alternative to the current model referred to as the Multiple Media Block (MMB) architecture.
MMB operation enables multiple Media Blocks (MB), each containing a Security Manager (SM), to be used in DCSS compliant projection booths. A new MB type - the Outboard MB (OMB) - is defined for use in MMB configurations.
Click here for:
DCI-MMB Architecture Description, Approved 26 June 2014 (PDF)
Response To Industry Inquiries
Regarding The Digital Cinema Object-Based Audio Addendum
Approved 23 April 2014
The Digital Cinema System Specification (DCSS) defines a projection booth architectural model centered on a single Security Manager (SM) contained within a single Media Block (MB) specified as the Image Media Block (IMB).
DCI recently issued the Digital Cinema Object-Based Audio Addendum, providing basic requirements for how this new essence type can be accommodated within DCI compliant architectures.
This document is a response to industry inquiries regarding the OBAE Addendum and the need to enable efficient implementations while preserving the fundamental architectural tenants important to maintaining security.
Click here for:
Response To Industry Inquiries Regarding The Digital Cinema Object-Based Audio Addendum, Approved April 23, 2014 (PDF)