Cisco Multi-Stream CableCARD Module Guía De Instalación
Chapter 1 PKES Hardware Installation
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4034718 Rev B
Overview of the PowerKEY Encryption Server
The PowerKEY Encryption Server (PKES) is a computer server that "pre-encrypts"
video-on-demand (VOD) content in a format that is compatible with the PowerKEY
and SoftCAS Conditional Access Systems (CAS).
video-on-demand (VOD) content in a format that is compatible with the PowerKEY
and SoftCAS Conditional Access Systems (CAS).
Note: Pre-encryption refers to the fact that the VOD "asset" is encrypted before it is
stored on a VOD server. Previous solutions stored the asset in the clear and did not
encrypt the VOD asset until ordered by a subscriber.
stored on a VOD server. Previous solutions stored the asset in the clear and did not
encrypt the VOD asset until ordered by a subscriber.
The PKES connects to an asset manager. When VOD content is ready to be
processed, the asset manager sends a notification to the PKES which results in the
initiation of an FTP transfer from the asset manager. The notification includes a
setting that directs the PKES to either encrypt the content or leave it in the clear but
apply copy protection. In both cases, the PKES inserts appropriate PowerKEY
Entitlement Control Messages (ECMs) into the file. When the encryption setting is
enabled, the PKES encrypts packets that have been previously marked for
encryption. Once the processing of the file is complete, the PKES FTPs the file back
to the asset manager for storage. Both the PKES and ISDS must be provisioned with
a key generated by the Transaction Encryption Device (TED) before encryption can
occur.
processed, the asset manager sends a notification to the PKES which results in the
initiation of an FTP transfer from the asset manager. The notification includes a
setting that directs the PKES to either encrypt the content or leave it in the clear but
apply copy protection. In both cases, the PKES inserts appropriate PowerKEY
Entitlement Control Messages (ECMs) into the file. When the encryption setting is
enabled, the PKES encrypts packets that have been previously marked for
encryption. Once the processing of the file is complete, the PKES FTPs the file back
to the asset manager for storage. Both the PKES and ISDS must be provisioned with
a key generated by the Transaction Encryption Device (TED) before encryption can
occur.