SHAPING THE FUTURE OF SATELLITE COMMUNICATIONS
Each device can support two keys for each stream: the odd key or the even key.
One key is the active key, while the other one is the next key to use. This allows to
distribute keys to all devices, then to switch to the new key on all devices at the
same time.
9.13.2.2 Key Management System Structure
The following picture details the structure of the AES key management system that
is implemented on all devices.
Figure 114 - AES Key Management System
• Group key: This key is entered by the user through any interface and stored in
the device. Group keys are used to decrypt the encrypted content keys. Group
keys cannot be read back on any interface.
EL170/470/970 >> Unit >> Control >> AES
Figure 115 - Group Key Field
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