| 摘要 |
The method involves receiving and decrypting, an encrypted data forming a content broadcasted by a broadcasting server, by a digital TV decoder/recorder. The decrypted content is re-encrypted with a random key (Ka) and transmitted to another decoders accompanied by an authorization block comprising the key encrypted with a network key (Kr). The block is decrypted and the random key is extracted, by the latter decoders. |
