| 摘要 |
<p>A digital data distribution system 190 for distributing the same media information 201 in a digital data stream, such as moving picture (MPEG) information, to a plurality of consumer electronic devices 230, 240, such as set-top boxes, computers, smart phones or smart televisions. The digital data distribution system 190 comprises at least one encrypter 221, 222 to encrypt a portion of the same media information in the digital data stream in a different manner for some, e.g. one, of the consumer electronic devices 230, 240 to form consumer encrypted data streams. A distributor is also provided to distribute each of the consumer encrypted data streams to the consumer electronic devices 230, 240, for example, over the Internet. Encrypting the same digital media with diverse encryption configurators, such as encryption keys and/or encryption initialisation vectors, provides good content protection.</p> |
