1. DCI – rump session CR ‘05 Jean-Jacques Quisquater DCI – rump session CR ‘05 Jean-Jacques Quisquater Digital Cinema System Specification V1.0 Jean-Jacques Quisquater UCL Crypto Group Université catholique de Louvain jjq@dice.ucl.ac.be http://uclcrypto.org August 16, 2005 Rump session Crypto

2. 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.

3. DCI – rump session CR ‘05 Jean-Jacques Quisquater DCI – rump session CR ‘05 Jean-Jacques Quisquater  Final specifications for Digital Cinema: July 20, 2005  See http://www.dcimovies.com/  80 pages out of 156 dedicated to security  Lot of protocols for the security of images, sounds, subtitles,...  Putting together standards (NIST, IETF, ISO, IEC,...),  Must protect for a long time the Hollywood production in the context of theaters,  Will change dramatically the distribution of movies

4. DCI – rump session CR ‘05 Jean-Jacques Quisquater DCI – rump session CR ‘05 Jean-Jacques Quisquater

5. DCI – rump session CR ‘05 Jean-Jacques Quisquater DCI – rump session CR ‘05 Jean-Jacques Quisquater

6. 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

7. DCI – rump session CR ‘05 Jean-Jacques Quisquater DCI – rump session CR ‘05 Jean-Jacques Quisquater Other security features  TLS  Watermarking  Forensics  Secure hardware

8. 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!