| 摘要 |
<p>The invention concerns a method for local recording of digital data received by a transmission network, which consists in encrypting the digital data received with a local recording key (KLEA) and in locally storing the encrypted data (7). The method is characterized in that it comprises the following steps: generating a content key (CK), combining the content key (CK) and a base key (BK) to obtain the local recording key (KLEA), storing the content key (CK) and the encrypted data (7) together with the local recording key (KLEA). The invention is particularly applicable to local recording of digital data derived from digital television broadcasting.</p> |
