Operation Of Aes - Newtec AZ110 User Manual

Features
AZ110 >> Modulator >> Control>> Modulation >> AES
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Figure 50 - Global Control Keys
8.3.3

Operation of AES

8.3.3.1 Setting a Key for the Transmission
Starting point: The encryptor sends clear data to the decryptor. Both have their
encryption mode set to "Off" or no encryption.
Steps:
1. The odd content key is entered in the decryptor.
2. The decryptor encryption mode is set to "On".
3. The odd content key is entered in the encryptor.
4. The encryptor encryption mode is set to "On".
8.3.3.2 Changing Keys Seamlessly
Starting point: The encryptor sends encrypted data to the decryptor. The odd key
is active. Both have their encryption mode set to "On".
Steps:
1. The even content key is entered in the decryptor.
2. The even content key is entered in the encryptor.
3. The encryptor is toggled to use the even key.
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User Manual for AZ110 Broadcast Satellite Modulator with ASI interface
An alternative is to turn the encryptor off, change the keys on
encryptor and decryptor and turn the encryptor back on. The
drawback is that the content is in clear for the time needed to
change all the keys.
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