| 摘要 |
In a contents distribution system, a prescribed secret is stored in an encrypted state according to a corresponding program key by the contents receiving and viewing program executed at the reception device, so that this prescribed secret cannot be altered by a malicious person. Also, the contents transmission program executed at the transmission device authenticates the prescribed secret of the contents receiving and viewing program by using either the public key algorithm or the secret key algorithm, and transmits the contents by trusting the reception device only when that authentication succeeds. <IMAGE> |
