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SypherShield™ Technology - Broadcast/IP Content Distribution Implementation


For Pay TV applications, our modular SST solution is fully DVB Simulcrypt compliant as defined in ETSI TS 103 197. Customers can license elements of our modular architecture to enhance their existing content protection infrastructures. Modules include key generation, secure database, high performance Headend boards, entitlement message generation, and control message generation.

Entitlement are generated on either a single or multiple product basis and distributed over a traditional broadcast or IP network. Support for file based OTT, or streaming content is provided as well as for IPTV and DVR applications. The following describes an implementation of an SST solution for a traditional broadcast system augmented with IP distribution.

SMI is a security technology company, not a Conditional Access company and consequently SMI’s business model for SST differs significantly from that of traditional CA companies. SMI licenses the modular technology and provides source code, documentation, training, and support. This model supports a full technology transfer to the Customer to allow the Customer to make enhancements, changes, or modifications as they see fit as their business grows.

The modular components that make up the SypherShield Technology (SST), which can be licensed independently, are:

SST™ Hardware/Software Enforced Headend Architecture
SST™ Hardware/Software Enforced Headend Architecture

Conditional Access Database Application

The Conditional Access Database (CADB) application resides inside a high reliability server. The CADB may reside on one or multiple servers depending on the size and complexity of the content protection system. The CADB is based on the Postgres database but can be adapted to Enterprise level database software as needed.

The CADB has the responsibility to maintain mappings between Products and Subscribers.

•  Products are Conditional Access (CA) internal product identifiers and external system identifiers (i.e. Billing System identifiers).
  
•  Subscriber is an account identifier (Subscriber Management System identifier) and Set Top Box (STB) identifiers.

Entitlement Management Message Generator (EMMG)

The Entitlement Management Message Generator (EMMG) is a process that resides inside a high reliability server. The EMM (entitlement data) generation may reside on one or multiple servers depending on the size and complexity of the broadcasters system.

The EMMG generates messages destined for individual or all STBs in the subscriber population. Its functions include requests from the Subscriber Management System (SMS) and/or the CADB to add new STB’s or remove STB’s from the system, authorizes individual boxes for programming, de-authorize individual boxes for programming, and manage renewal entitlements for STB’s in the field.

Entitlement Control Message Generator (ECMG)

The Entitlement Control Message Generator (ECMG) is a process that resides in a high reliability server. The ECMG may reside on one or multiple servers depending on the size and complexity of the system.

The ECMG is responsible for generating ECMs (control data) that include data from the SypherMedia GateKeyper (SMG) and external systems such as the Product Management System, if needed.

SypherMedia GateKeyper (SMG) Server

The SypherMedia GateKeyper (SMG) Server is a high reliability server. The EMM and ECM processing functions may reside in the same, separate or multiple servers depending on the size and complexity of the system. The SMG maintains the essential key material for constructing secure messages from the Headend to the client. The SMG Server can accommodate PCI Field-Programmable Gate Array (FPGA) and/or SMI card Headend boards when required to support security functions in the System on Chip (SoC) or optional customer smart card.

SypherMedia Kernel

The SypherMedia Kernel (SMK™) is the client interface to the SypherMedia GateKeyper. The SMK is a library utilized by the Set-Top-Box (STB) application to receive and process security messages from the Headend.

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