Abstract: A memory card includes one or more memory chips that store memory quality data including a storage volume value; and a certification storing unit that stores a storage volume certification including a sum storage volume value of one or more memory chips.

Abstract: A content providing system includes: a server which provides to a host apparatus a first encrypted content including an encrypted area having applied thereto a replacement key; a host apparatus which receives the first encrypted content and replacement key application area information indicating the encrypted area having applied thereto the replacement key from the server; and a data storage device which receives the replacement key from the server and an individual key set in terms of content distribution processing from the server and performs key replacement processing for changing the replacement key application area of the first encrypted content to an encrypted area by the individual key to store a second encrypted content after the key replacement processing in a data recording area.

Abstract: An information processing apparatus includes: a data processor which creates content to be distributed to a client, wherein the data processor executes processing of creating content provided to a client by selecting data in units of segments, which are division data of content, from a plurality of additional information recorded content items obtained by recording different additional information items on original content, selects different segment columns in units of content distribution clients in the processing of creating content provided to a client, and creates management information in which client information for identifying a client of a content distribution destination and segment column information indicating a segment selection state of the content provided to a client, which is provided to a corresponding client, are matched with each other and records the management information in a storage unit.

Abstract: An information processing device including: a data processing unit that generates content for transmitting to a client; and a communication unit that transmits the generated content of the data processing unit, wherein the data processing unit generates, based on basic encrypted content having a plurality of units that each includes a SEED that is data for encryption key generation and a block that is encrypted data that is encrypted by an encryption key generated using the SEED, each data of (a) converted encrypted content on which conversion processing to replace the SEED with dummy data or to delete the SEED is performed, and (b) encrypted SEED that is the SEED encrypted by content transmission processing or by individual keys that are different by units of users at a transmission destination, and transmits the generated converted encrypted content and encrypted SEED as data provided to the client via the communication unit.

Abstract: An information processing device including: a data processing unit that generates an encryption key of content; and a communication unit that transmits an encryption key generated by the data processing unit, wherein the data processing unit generates, as the encryption key, individual keys that are different for each new content recording processing on a recording medium in a content recording device, and transmits the individual keys through the communication unit.

Abstract: An information processing apparatus includes a data processing unit which generates content to be distributed to a client; and a communication unit which sends the content generated by the data processing unit, wherein the data processing unit combines a plurality of watermarking record blocks, each of which is obtained by embedding watermarking data into a block as section data of the content, generates content in which different watermarking data sequences are set in units of distribution processing with respect to the clients, and sends the generated content to the clients through the communication unit.

Abstract: Disclosed herein is a storage apparatus including: a first storage block configured to record and hold encrypted content data and output the encrypted content data on an on-demand basis; a second storage block configured to record and hold a confidential title key; a title stream key generation block configured to generate a title stream key corresponding to a subject of encryption of the content data by use of the held confidential title key; and a communication block configured to transmit the generated title stream key with confidentiality thereof held.

Abstract: An information processing device includes: a data processing unit that executes a process of reproducing content recorded in a medium, wherein the data processing unit acquires a token from the medium, the token being management data corresponding to content recorded in the medium, compares a server ID recorded in the acquired token with a server ID recorded in a server certificate acquired from a server from which the management data is acquired, and halts reproduction of content when the two server IDs are not identical.

Abstract: An information processing device includes: a memory having a protected area which is a data recording area in which access restriction is set; and a data processing unit that determines accessibility in response to a request for accessing the protected area from an access requesting device, wherein the data processing unit verifies a device certificate received from the access requesting device and determines accessibility to the protected area based on access control information recorded in the device certificate.

Abstract: An information processing device includes: a data processing unit that executes a process of reproducing content recorded in a medium; and a memory storing a content revocation list in which an identifier (ID) of revoked content is recorded, wherein the data processing unit compares a minimum allowable version of a content revocation list recorded in a token which is management data corresponding to content recorded in the medium with a version of a content revocation list acquired from the memory, and when the version of the content revocation list acquired from the memory is an old version lower than the minimum allowable version of the content revocation list recorded in the token, the data processing unit halts determination on revocation of content based on the content revocation list acquired from the memory and reproduction of content.

Abstract: A memory device includes: a storage section configured to store public key information of a certificate authority for verifying a certificate and revocation information for revoking illegal devices and to include a secret area for storing data of which the confidentiality is to be guaranteed; and a control section configured to have a function of communicating with an external device and to control access to the secret area of the storage section at least in accordance with the revocation information.

Abstract: A memory device is provided including: a storage section configured to store a content with a time limit for use; an elapsed time counting section configured to count the time limit; a battery section configured to be supplied with power from an external device accessing the time-limited content so as to be charged with power for operating the elapsed time counting section; and a control section configured to include a function of determining an expected time period during which the battery section can sustain the elapsed time counting section operating to count the time limit.

Abstract: A memory device includes: a storage unit that stores public key information of a certificate authority for verifying a certificate and includes a secret area storing data of which secrecy is assured; and a control unit that controls access to the storage unit depending on reception information, wherein the reception information includes information where access control information is added to certificate information authenticated by the certificate authority, and the control unit verifies the certificate using the public key, identifies the access control information, and limits the accessible secret area in the storage unit.

Abstract: A storage device includes: an input/output section connected to an electronic apparatus; a memory for storing data; a control section accessing the memory based on an instruction input from the electronic apparatus to the input/output section; and a communication section communicating with an external apparatus separate from the electronic apparatus, wherein the control section accesses a range in the memory specified by the electronic apparatus based on the instruction from the electronic apparatus and causes data associated with the accessed range to be transmitted and received between the communication section and the external apparatus.

Abstract: A peripheral device includes: an input/output block connected to a device subject to connection; a communication block configured to communicate with a device subject to communication; and a conversion block configured, if the device subject to communication is a storage device, to convert a storage access command output by the device subject to connection to the input/output block into a communication command that is transferred between the communication block and the device subject to communication, wherein the communication block transmits the communication command generated by the conversion block to the device subject to communication and transfers, with the device subject to communication, one of data that is written by the device subject to connection to the device subject to communication and data that is read from the device subject to communication.

Abstract: A card management device includes: a card device configured to include a controller on which a cryptographic IP is mounted in advance; and an individual information writing device configured to allow the card device to be connected to the individual information writing device in such a way that the card device is capable of data transfer to the individual information writing device, individual information assigned to the card device in advance being set in the individual information writing device, the individual information writing device being capable of writing the individual information to the card device connected to the individual information writing device.

Abstract: An original data circulation system for storing or circulating original data which is digital information is provided. The original data circulation system includes an issuer apparatus, a user apparatus and a collector apparatus. The issuer apparatus generates originality information including first information corresponding to the issuer apparatus and second information corresponding to data and sends the originality information. The user apparatus verifies the validity of the source apparatus of the originality information and stores the originality information when the validity is verified. The collector apparatus verifies the validity of the source apparatus of the originality information and processes data corresponding to the second information when the validity is verified.

Abstract: An original data circulation system for storing or circulating original data which is digital information is provided. The original data circulation system includes an issuer apparatus, a user apparatus and a collector apparatus. The issuer apparatus generates originality information including first information corresponding to the issuer apparatus and second information corresponding to data and sends the originality information. The user apparatus verifies the validity of the source apparatus of the originality information and stores the originality information when the validity is verified. The collector apparatus verifies the validity of the source apparatus of the originality information and processes data corresponding to the second information when the validity is verified.

Abstract: The present invention provides a content distribution server that allows the terminals owned by a same user to purchase content without repeating purchase processing once it has been executed only on one of these terminals. The content distribution server is made up of a content database storing the content identified by content ID in a plurality of files having different attributes and a user database storing the content IDs of the content purchased by the user identified by user ID. At the time of content purchase processing by a first terminal, this content distribution server registers the user ID of the first terminal in the user database.

Abstract: An information processing apparatus includes an application execution unit configured to generate data to be recorded onto a medium that records data or reproduce data from the medium, a file system unit configured to manage data recorded on the medium using a file system, and a file conversion unit configured to perform conversion between a first file format processable by the application execution unit and a second file format defined by the file system. The file conversion unit converts a file of the first file format generated by the application execution unit into a file of the second file format having an allowable size defined by the file system and supplies the converted file to the file system unit in the form of a file to be recorded.