Patent ID: 7516329
Filing Date: 2009-04-07
Classification: G06F,G11B,Y10S

Abstract:
1. An information processing apparatus operable to perform content management, the apparatus comprising: acquiring means that acquires content that is to be transferred to another information processing apparatus; encryption means that encrypts the acquired content; transmitting means that transmits the encrypted content to the another information processing apparatus; receiving means that receives, from the another information processing apparatus, a computation value that is computed by the another information processing apparatus based on the transmitted encrypted content; storage means that stores the received computation value; and management means that, in response to said receiving means receiving and said storage means storing the computation value, causes said transmitting means to transmit usage information to the another information processing apparatus that permits use of the content by the another information processing apparatus; wherein said management means, based on the usage information, subsequently requests the another information processing apparatus to compute another value, said receiving means receives the another value from the another information processing apparatus, said management means compares the received value to the computation value stored in said storage means, and in response to the received value corresponding to the stored computation value, causes said transmitting means to transmit a request to the another information processing apparatus to delete the content.