Security

CryptoFirewall Content Protection Core

Our CryptoFirewall core secures digital entertainment content by protecting cryptographic keys and computations from attack. It provides a robust foundation for securely delivering content to pay TV devices. Operators and over-the-top (OTT) content distributors can benefit from this hardware-based security solution that satisfies the most stringent requirements for premium content, all while utilizing the same conditional access (CA) and digital rights management (DRM) systems.

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Product Brief

Solution Offerings

Our CryptoFirewall core is a separate, on-chip, hardware-based security block. It is designed to be easily used by major CA/DRM vendor platforms.

CryptoFirewall solution supports various systems:

In broadcast systems: the core receives the data it needs for operation in standard encrypted messages from the conditional access system.

In OTT systems: data for the core is typically sent in license files during the provisioning of the device.

In CA systems: the core can either derive or generate the control word and deliver it into the DVB-CSA descrambler. For derivation of the control word, the core delivers a key into the key ladder.

In DRM systems: operation is similar to the CA system, except the key that is being derived is the content encryption key and is usually delivered to a bulk AES decryption engine. In both cases, generation and derivation of the control word or content encryption key is handled in secure, protected hardware.

Our CryptoFirewall solution supports a multi-domain security feature that is unique to our core and is based on an advanced hardware root-of-trust. This innovative feature allows premium content to flow securely from the cloud directly to pay TV devices like STBs, forming a secure foundation for convenient access to all pay TV content on one device. It enables new ways to distribute pay content, providing benefits to both operators and OTT distributors:

  • Operators can provide their subscribers with instant individual choice of content on the STB or TV
  • OTT distributors can deliver content directly and securely to operator STBs and TVs

Our core is integrated into leading multimedia decoding chips. To view a list of our SoC partners, click here.

Inventions

DPA Countermeasures

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DPA Countermeasures are fundamental techniques for protecting against Differential Power Analysis (DPA) and related side-channel attacks. Consisting of a broad range of software, hardware, and protocol techniques, DPA Countermeasures include reducing leakage, introducing amplitude and temporal noise, balancing hardware and software, incorporating randomness, and implementing protocol level countermeasures.

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