The DxHDCP security module provides a standards-based, cost-effective, copy protection solution for digital video and audio streams over wireline and wireless interfaces.

Market Needs

The high-definition content market is booming, driven by the increased availability of content and viewing devices. To protect this high-value content, content providers demand robust copy protection. Developed and licensed by Digital Content Protection, LLC – HDCP is the most widely-used technology to protect HDMI, DVI and other interfaces. Furthermore, the HDCP protocol is endorsed by the motion picture industry as the "technology of choice" for secure distribution of digital content.

HDCP provides a standard connectivity protection for wireline and wireless interfaces. HDCP the secure display and transfer of content through the use of transmission authentication, encryption, decryption and renewability. HDCP enables reception of protected content from a wide range of transmitters, including set top boxes, game consoles, notebook computers, and others.

Technical Overview

The DxHDCP engine is a complete solution for protecting digital video streams, accelerating and securing all stages of the protocol including authentication, encryption, and key revocation. As shown in the block diagram the AES-based key protection module allows private keys to reside externally on flash memory, reducing the amount of required NVM. The key protection module decrypts the private keys, loads them internally during operation, while the HDCP cipher accelerates video encoding and decoding. Also available are the authentication and key revocation managers that discover and authenticate all connected HDCP ports and provide key revocation checks. Following the hot plug detect signal, the authentication session is established between transmitter and receiver. Once the authentication and key revocation checks are completed, video streams and data are decrypted or encrypted for display.

Block Diagram

Configuration Options

Key Benefits: HDCP

Supports wide range of interfaces – HDMI, DVI, USB, TCP/IP, Ethernet, WHDI and Wi-Fi
Platform independent – supports digital TV and projectors, DVD players, set-top box, HDMI and DVI switch box, and A/V transmitters/receivers
Minimal silicon area – significantly less Non-Volatile Memory (NVM) required to store HDCP private keys
Modular design – available in numerous configurations
Cost-effective solution - high performance, small footprint, and low power design

Highlights:

Comprehensive solution – manages entire HDCP protocol, including authentication, accelerated encryption and key revocation
Device private key encryption – allows secure storage of private keys on external flash, saving silicon cost without compromising sensitive key material
Secure key management – all device key material managed and computed by hardware modules
Supports hardware cryptography – HDCP cipher, HASH, RSA, AES, and RNG

Key Features:

Throughput of up to 8Gbps
HDCP 1.3 over HDMI and DVI and HDCP 2.0
HDCP 2.0 to HDCP1.3 compatibility support
Complete software stack for authentication, key derivation and revocation
AES-based Secure Storage of device private keys
AMBA AHB Slave lite interface

Deliverables:

Synthesizable Verilog RTL source code
Synthesis script and constraints
RTL Test Bench (test vectors and expected results)
ANSI-C code for complete HDCP stack
User Manual – integration guidelines and application notes
PC tool to encrypt and program HDCP device private keys

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