DCI – rump session CR ‘05 Jean-Jacques Quisquater

DCI – rump session CR ‘05 Jean-Jacques Quisquater

Digital Cinema System Digital Cinema System

Specification V1.0Specification V1.0

Digital Cinema System Digital Cinema System

Specification V1.0Specification V1.0

Jean-Jacques Quisquater

UCL Crypto GroupUniversité catholique de Louvain

jjq@dice.ucl.ac.behttp://uclcrypto.org

August 16, 2005 Rump session Crypto

DCI – rump session CR ‘05 Jean-Jacques Quisquater

DCI – rump session CR ‘05 Jean-Jacques Quisquater

• Digital Cinema Initiatives, LLC (DCI) is the entity created by seven motion picture studios:

- Disney, - Fox, - Metro-Goldwyn-Mayer, - Paramount Pictures, - Sony Pictures Entertainment,- Universal Studios and - Warner Bros. Studios.

DCI – rump session CR ‘05 Jean-Jacques Quisquater

DCI – rump session CR ‘05 Jean-Jacques Quisquater

Final specifications for Digital Cinema: July 20, 2005Final specifications for Digital Cinema: July 20, 2005

See See http://www.dcimovies.com/http://www.dcimovies.com/ 80 pages out of 156 dedicated to security80 pages out of 156 dedicated to security Lot of protocols for the security of images, sounds, Lot of protocols for the security of images, sounds,

subtitles, ...subtitles, ... Putting together standards (NIST, IETF, ISO, Putting together standards (NIST, IETF, ISO,

IEC, ...),IEC, ...), Must protect for a long time the Hollywood Must protect for a long time the Hollywood

production in the context of theaters,production in the context of theaters, Will change dramatically the distribution of moviesWill change dramatically the distribution of movies

DCI – rump session CR ‘05 Jean-Jacques Quisquater

DCI – rump session CR ‘05 Jean-Jacques Quisquater

DCI – rump session CR ‘05 Jean-Jacques Quisquater

DCI – rump session CR ‘05 Jean-Jacques Quisquater

DCI – rump session CR ‘05 Jean-Jacques Quisquater

DCI – rump session CR ‘05 Jean-Jacques Quisquater

Basic cryptographic components

Encryption of images and sound: AES (128 bits) in CBC mode,

Protection of keys: AES (128 bits) or triple DES (112 bits),128-112 bits of entropy,

RSA signature with SHA-256, 2048 bits, 2 or 3 factors (each at least 680 bits), 128 bits of entropy

X.509v3 digital certificates, Data integrity: HMAC-SHA1

DCI – rump session CR ‘05 Jean-Jacques Quisquater

DCI – rump session CR ‘05 Jean-Jacques Quisquater

Other security features

TLS Watermarking Forensics Secure hardware

DCI – rump session CR ‘05 Jean-Jacques Quisquater

DCI – rump session CR ‘05 Jean-Jacques Quisquater

Conclusion

An interesting report to study, If you want to study it together, send

me an email, lot of things to find,

Thanks for your attention

Good Night!