Information processing apparatus, information processing method and program

Abstract

An information processing apparatus includes: a data processing unit configured to generate contents to be provided to a client, wherein the data processing unit extracts plural blocks (blocks 1 to i) as content configuration data from an original content, sets patterns 1 to k as plural patterns including block rows of the extracted blocks 1 to i, generates encrypted blocks applying block keys Kb (Px, By) which are different according to respective patterns and respective blocks, in which Px indicates k-pieces of pattern identifiers (P1 to Pk) and By indicates i-pieces of block identifiers (B1 to Bi), selects encrypted blocks 1 to i from the patterns 1 to k at random in each content delivery, generates individually-encrypted portions by encrypting part of configuration data of the selected blocks by applying an individual key (user key Ku) corresponding to a client as a content delivery destination, and generates an encrypted content including encrypted blocks on which encryption processing by the block keys Kb (Px, By) is performed and individually-encrypted portions on which encryption processing by the individual key (user key Ku) is performed as the content to be provided to the client.

Description

technical field [0001] The present disclosure relates to an information processing device, an information processing method, and a program. In particular, the present disclosure relates to an information processing device, an information processing method, and a program used in a system capable of preventing illegal use of content or tracking the source of illegally distributed content. Background technique [0002] In recent years, data communication via a network such as the Internet has been widely used, and a large amount of image data, music data, and the like are widely distributed via the network. [0003] Copyrights, distribution rights of many contents such as music data and image data are held by manufacturers, sellers. Therefore, for example, when a service provider provides content from a server to users via a network, it is common to control so that only users having authorized usage rights are allowed to use the content. [0004] Specifically, for example, co...

AI Technical Summary

Problems solved by technology

[0021] If the decrypted content is disclosed, illegal use of the decrypted content will spread widely, and even when the encryption key is changed for each client, it is difficult to identify the client that has illegally disclosed the decrypted content

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