Patent ID: 8819456

Claim:
A content receiving terminal that allows a portable recording medium to be set, the content receiving terminal comprising: a network interface that receives a content from a content server through a communication network, based on an acquired export license; a non-transitory storage; and a processor that: encrypts the content that is received by the network interface by using an encryption key for the content; exports the encrypted content directly and sequentially to the portable recording medium; encrypts a decryption key for the content, which is used for decrypting the encrypted content, by using an encryption key for the decryption key for the content, the encryption key for the decryption key for the content being generated uniquely; records the encrypted decryption key for the content in the portable recording medium; sequentially reads out the encrypted content that has been exported to the portable recording medium; reads out the encrypted decryption key for the content from the portable recording medium; (i) uniquely generates a decryption key for decrypting the encrypted decryption key for the content, the encrypted decryption key being able to be decrypting only by the content receiving terminal, and (ii) stores the decryption key for decrypting the encrypted decryption key for the content in the non-transitory storage during the process of exporting the encrypted content directly and sequentially to the portable recording medium; decrypts the read-out encrypted decryption key for the content by using the decryption key for decrypting the encrypted decryption key for the content; and decrypts the encrypted content that is read out from the portable recording medium, by using the decrypted decryption key for the content to reproduce the content, wherein the processor encrypts the decryption key for decrypting the encrypted decryption key for the content by using another encryption key, wherein the processor uniquely generates the other encryption key for encrypting the decryption key for decrypting the encrypted decryption key for the content, and wherein when the decryption key for decrypting the encrypted decryption key for the content is encrypted, the processor records the encrypted decryption key for decrypting the encrypted decryption key for the content in the portable recording medium.