Secure transmission method and apparatus for transport stream

  • US 9,124,772 B2
  • Filed: 04/09/2012
  • Issued: 09/01/2015
  • Est. Priority Date: 04/08/2011
  • Status: Active Grant
First Claim
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1. A secure transmission method for transport stream (TS), which is applied to a receiving terminal of a digital television broadcasting system, characterized in that in a CA board integration solution scene, the method comprises:

  • after receiving a TS, a first device in the receiving terminal, a chip or function unit with the function of TS connection protection encrypts the received TS using a key already negotiated with a second device, a Moving Picture Experts Group (MPEG) decoding chip in the receiving terminal and utilizing a determined encryption algorithm, and sends the encrypted TS to the second device in the receiving terminal; and

    after receiving the encrypted TS, the second device in the receiving terminal decrypts the received encrypted TS using the key and utilizing a decryption algorithm corresponding to the encryption algorithm.

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