| 摘要 |
<p>A communication system (102) having secure content distribution has a receiving device (118), such as a set-top box, to receive programming. The receiving device communicates the received program content to a presentation device (120), such as a television. In order to control access to program content, a program distributor (106) may encrypt the content. Access control information may be provided to the receiving device by a communication system (108) distinct from the program distributor (106). The receiving device (118) is enabled to receive the encrypted program content from the distributor (106) and to receive decryption keys by way of the communication system (108) and to decrypt, and thereby access the program content.
</p> |
