BISS2 Operational Modes
The Scrambler shall support the following four (4) modes of operation:
Mode 0: No scrambling is applied.
Mode 1: Components are scrambled by a Session Word (SW), and the SW is transmitted out
of band in clear to the receivers.
Mode E: Components are scrambled by a Session Word (SW), the SW is encrypted with a
fixed Session Key (SK) and the resulting Encrypted Session Word (ESW) is transmitted out of
band to the receivers.
Mode CA: Components are scrambled with a Session Word (SW), the SW is encrypted with a
Session Key (SK), and the resulting Encrypted Session Word (ESW), along with the key
information is transmitted in-stream to receivers. Both SW and SK are dynamically changed
during the live event transmission.