System and method for security processing media streams

  • US 7,620,179 B2
  • Filed: 01/29/2004
  • Issued: 11/17/2009
  • Est. Priority Date: 01/29/2004
  • Status: Active Grant
First Claim
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1. A system for multi-stream security processing and distributing digital media streams, the system comprising:

  • a headend configured to generate encrypted digital media streams and download software;

    a network coupled to the headend and configured to receive the encrypted digital media streams and downloaded software; and

    at least one receiver coupled to the network and configured to receive the encrypted digital media streams and downloaded software and to present a decrypted version of the encrypted digital media streams based on the downloaded software, wherein the receiver comprises a security processor configured to provide at least one of simultaneous multiple encryption and simultaneous multiple decryption processing of the digital media streams, the security processor operative to store the downloaded software and to securely configure, renew, and re-configure at least one of encryption and decryption by the security processor based on the downloaded software;

    wherein the security processor comprises a plurality of digital stream encryption/decryption engines that are selectively parallel coupled by a controller for simultaneous operation in response to a predetermined security configuration;

    wherein the security configuration comprises at least one of Data Encryption Standard (DES), Triple DES (3-DES), Advanced Encryption Standard (AES), and Common Scrambling Algorithm (CSA).

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