Specifications

6-9
Miscellaneous
The private key has to be set on CLIPSTER. Because usually it is stored
in a special file, it may require a password to be opened.
Due to the fact that the public key is attached to the extra files via cer-
tificates, it will be distributed with them to the D-Cinema player auto-
matically. There the exhibitor can extract it from the files and use it to
verify the origin and validity of the DCP.
Self KDM Key
This key is not necessarily required. A DCP can be created without it,
but afterwards it would be impossible to load it again with a CLIPSTER
DCI Mastering system.
The key for a self KDM is in most respects identical to an Encryption
Key. While the private key is stored securely in the hardware of the re-
spective CLIPSTER DCI Mastering system, the complementary public
key is provided via a certificate file. You can find this file either already
stored in the installation directory of the CLIPSTER software or on a
separate CD-ROM. However, compared to the Encryption Key this key
has to be set differently in the CLIPSTER software.
Summary
The following lists shortly the most important points about the different
keys:
Further information about a self KDM and where it can be set
in CLIPSTER can be found in chapter “Using the DCP and Self
KDM” on page 5-1.
AES key – Generated automatically by CLIPSTER
Encryption Key – Certificate with public key must have been sent
to you by the theater (typically the public key
of a specific D-Cinema player)
– Has to be set on CLIPSTER
Signing Key – You have to provide this key pair
– The private key has to be set on CLIPSTER
– The public key will be attached to the extra files
of the DCP and is thus delivered with the DCP
automatically
Self KDM – Similar to the Encryption Key
– Public key file is available on CD-ROM or in the
installation directory of CLIPSTER
– Requires a different setting than the Encryption
Key in CLIPSTER
See chapter “Using the DCP and Self KDM” on
page 5-1.