SHAPING THE FUTURE OF SATELLITE COMMUNICATIONS
9.13 AES Content Protection
AES content protection is a solution to protect content during the satellite
transmission. The protection is implemented at DVB-S2 baseband frame level. The
modulator will encrypt the content before transmission. To receive the content, the
demodulator must be able to decrypt the received signal. The encryption and
decryption process is based on content keys. The decryptor is only authorised to
receive the content when the correct content key is loaded on the demodulator.
Furthermore, AES content protection is a fully transparent security solution that
guarantees the transport stream at the output of the decryptor to be bit-per-bit
identical to the one at the input of the encryptor. This guarantees to use the content
in a single frequency network after satellite transmission.
AES protects transport streams or IP data, independently of the encapsulation
used.
Figure 112 - Secure Transmission over Satellite
The security mechanism implemented is however NOT suited for
applications requiring very strong security, such as banking data
exchanges, military secrets, highly sensitive information, video
feeds that needs to be kept confidential for a long time.
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