| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a communication device, a communication network system, and a content server selection method that improve throughput between a content server and a terminal device.SOLUTION: An information communication device transmits encrypted content to another information communication device. The information communication device comprises a content key confirmation unit that, when a confirmation request for a content key used at the time of decrypting the encrypted content was received, reads out first link information and second nonce information included in first nonce information included in the confirmation request and the second nonce information stored in nonce management data, reads out corresponding third nonce information, and confirms the content key on the basis of the first nonce information and the third nonce information.</p> |
