| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize secure contents distribution between a contents distribution server and a reproduction device without the need for reading personal authentication information from an authentication device such as a mobile phone. SOLUTION: The contents distribution system is characterized in the provision of a contents storage means 111 that stores contents, an encryption key communication means 112 that communicates a random number of secret information and receives an encrypted encryption key K23, an encryption key generating means 115 that generates the encryption key K12 on the basis of the random number and the secret information, a key decoding means 116 that decodes the encryption key K23 received and encrypted by the encryption key communication means 112 by using the encryption key K12 generated by the encryption key generating means 115, a contents encryption means 113 that encrypts the contents stored in the contents storage means 111 by using the encryption key K23 decoded by the key decoding means 116, and a contents transmission means 114 that transmits the contents encrypted by the contents encryption means 113.</p> |
