DVS Clipster Guide de l'utilisateur télécharger pdf (Page 100)

6-12

Miscellaneous

information exchange file (*.pfx) which is typically encrypted and re-

quires a password to be opened. This file will also contain the public key

certificate (or more than one if a certificate chain is involved) for au-

thentication as well. Thus, a PFX file contains besides the private key

one or more public keys.

6.6.3 The Key Players of the DCI Mastering

Detailed in the following you can find the key pairs that are used during

a DCI Mastering.

AES Key

The AES key is a symmetric key used to en- and decrypt the content of

the DCP (track files). For each track file an individual AES key is gener-

ated. This key will be encrypted with the Encryption Key on CLIPSTER

(see below) and written to the KDM file.

The AES key is generated randomly and automatically by CLIPSTER.

Encryption Key

The Encryption Key is an asymmetric key pair (RSA) used to encrypt and

decrypt the AES key. Typically this key pair is generated by the manu-

facturer of the D-Cinema player and handed to the purchaser of the

player:

–The public key of the Encryption Key is used to encrypt the AES

key when it is written to the KDM. Usually it is embedded in a

certificate file.

–The private key of the Encryption Key is stored on the D-Cin-

ema server/player at the recipient’s site. It is used to decrypt

the AES key provided via the KDM.

The private key is stored at the recipient’s site and will not be distribut-

ed. Thus it can be disregarded because it will not be available to you.

The public key should have been sent to you in a signed certificate to

enable you to create a DCP for this player. It has to be set on CLIPSTER.

Signing Key

The Signing Key is an asymmetric key pair (RSA) used to sign and vali-

date the files of a DCP (e.g. KDM or CPL). With it the creator of the

DCP digitally signs the extra files, while the recipient will be able to ver-

ify that the DCP was distributed by the creator/distributor and not al-

tered in the meantime:

1 2 ... 95 96 97 98 99 100 101 102 103 104 105 ... 112 113

Pas de commentaire

DVS Clipster Guide de l'utilisateur Page 100