News Release from: Vocal Technologies
Edited by the Electronicstalk Editorial Team on 30 April 2004
Core solution speeds video data
New from Vocal Technologies, AES-128 is a processor extension for Digital Transmission Content Protocol (DTCP).
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New from Vocal Technologies, AES-128 is a processor extension for Digital Transmission Content Protocol (DTCP). DTCP is a protocol that uses the elliptic curve digital signature algorithm (EC-DSA) for authentication and elliptic curve Diffie-Hellman (EC-DH) algorithm for key exchange. Once a session-key has been established, the 128bit key is used with the AES base cipher to encrypt the content that will be transmitted.
Vocal's Cryptography Engine, an AES hardware core wrapped by a RISC processor, is a perfect solution for DTCP.
The programmable processor core is ideal for handling the encryption protocol (authentication, key exchange, packet inspection, control code, and other RISC type operations) while the AES fixed hardware core encrypts/decrypts the streaming payload.
The datarate for MPEG2 compressed video is around 10Mbit/s, and using a pure software solution requires around 65MIPS to decrypt the MPEG2-stream.
With the Vocal AES core solution, the decryption can be done in less than 1MIPS.
This scales to 1.28Gbit/s per 100MHz processing power and even permits multichannel systems.
Current set-top boxes using a standard microprocessor core can upgrade their solution to include DTCP with a simple drop in solution.
Advantages of Vocal's solution include flexibility through the ability to program and configure the DTCP solution, engineering experience and the expertise needed to integrate individual modules to make a complete low-cost solution.
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