Abstract: An information processing apparatus includes a content usage control information analyzer configured to read content usage control information recorded on an information recording medium and to perform content usage processing according to the content usage control information. The content usage control information analyzer determines whether the usage of content corresponding to the content usage control information is allowed based on a value of a flag included in the content usage control information and device information whether the information processing apparatus is an extended device having an extended function or a basic device without an extended function.

Abstract: The present invention provides a configuration capable of effectively preventing an encrypted content stored on an information-recording medium from being misused. In this configuration, a seed (seed 2) required for generating a block key to be applied to a process to decode an encrypted content is stored as information encrypted by using another block key Kb1. In addition, in a configuration where the seed (seed 2) needs to be transferred from a device to another, both the seed (seed 2) and a recording key K2 are transferred from the device to the other as information encrypted by using a session key. In such configurations, it is difficult to analyze the seed (seed 2) by acquisition of data from the information-recording medium or a data transmission line. Thus, difficulties to analyze a key generated by using the seed and analyze an encryption algorithm are increased. As a result, protection of contents at a high level of security can be implemented.

Abstract: A list of video fingerprinting data that represents a feature of the newest video content is extracted from a digital video disc 160 or provided by a copyright supervisor authorized by a managing organization. The list of the video fingerprinting data is recorded in a non-volatile memory 181. When video content is reproduced from the digital video disc 160, a fingerprinting data calculating portion 187 extracts the feature of the video content and obtains video fingerprinting data. When the data is contained in the list, the reproduction for the video content is restricted. Thus, the reproduction for an illegal digital video disc 160 can be restricted until the copyright supervisor permits the reproduction for the digital video disc 160.

Abstract: An MKB and a device key 121 of a drive are input to a process MKB 122. The process MKB 122 performs a revoking process for the drive. A process MKB 132 performs a revoking process for a host 103. The host 103 compares MAC values calculated by MAC calculating blocks 123 and 133. When the host 103 has determined that the two values are the same, the host 103 has successfully authenticated the drive 102. The drive 102 compares MAC values calculated by MAC calculating blocks 134 and 124 of the host 103. When the drive 102 has determined that the two values are the same, the drive 102 has successfully authenticated the host 103. When the mutual authentication has been successfully performed, the MAC calculating blocks 125 and 135 generate a common session key.

Abstract: A content stored in an information recording medium is managed on a per unit basis and protected from unauthorized use. The content stored in the information recording medium is divided into units, and the content is encrypted with a unit key generated for each unit. A unit key generation key is generated based on a variety of key generation information. The unit key for each unit is generated by applying a record seed corresponding to each unit to the unit key generation key. For example, a block key is generated based on the unit key and a block seed per block unit set for every 3 sectors. An encryption process is performed on a per block unit basis using the block key. During decryption, the decrypting of the content is permitted conditional on the matching in the key generation information, the record seed, and the block seed stored in a disk. Unauthorized use of the content is thus prevented.

Abstract: An information processing apparatus and method are provided. The information processing apparatus and method provides an attribute of a component which executes a process of reading data from an information recording medium is confirmed so that severe authentication corresponding to contents can be achieved. In authentication of a component which attempts to perform a process of data read from an information recording medium, it is confirmed whether or not an attribute of the component has a data process permission component attribute set in advance. For example, it is confirmed through the attribute confirmation whether the component is a hardware component or a software component, and only when the component is a hardware component, a process of the contents is permitted.

Abstract: A recorder is composed of a drive 102 and a host 103 that mutually authenticate each other. A C2_G 141 of the drive 102 calculates a medium ID and a medium key and obtains a medium unique key. The medium unique key is encrypted using a session key Ks generated by the mutual authentication and transferred to the host 103. A title key generated by a random number generator 143 of the drive 102 is transferred to the host 103. A content key calculated by a C2_G 145 of the drive 102 using the title key and the CCI 232 is encrypted using the session key Ks and then transferred to the host 103. A content is encrypted using a content key decrypted by the host 103. The drive 102 records the encrypted content, the encrypted title key, and the CCI 232 to the medium 101.

Abstract: A system, apparatus and method for prevention of unauthorized manufacture and distribution of information recording media containing content, in which an information recording medium manufacturing entity transmits a key information issue request created based on information recording medium manufacturing request issued by a content rights owner to a key information issue entity, verifies authenticity of the issued request and, depending on the legitimacy acknowledged as a result of such verification, issues a key information for storing the content into the information recording medium. As for content acquired through unauthorized channels, the key information cannot be obtained, thus preventing manufacturing of discs or media containing improperly acquired content.

Abstract: The present invention relates to a video signal processing apparatus, a video signal playback apparatus, and a video signal recording apparatus in which illegal copying of thumbnail images can be prevented. A thumbnail encoder 19 generates a thumbnail image of a video signal input from a terminal 12. A macrovision detector 13, a CGMS detecting/updating unit 14, and a WM (watermark) detecting/updating unit 15 detect an analog copy protection signal (APS), a CGMS signal as copy generation management information, and watermark, respectively, of the video signal input from the terminal 12, and outputs them to a controller 21. The controller 21 generates copy control information of the thumbnail image based on the input copy control information. The thumbnail image and the copy control information thereof are recorded in an information recording medium 26.

Abstract: When contents are copied or transferred from a first information processing apparatus to a second information processing apparatus, the contents are stored onto a recording medium of the second information processing apparatus as they are without decryption and re-encryption. The first information processing apparatus also supplies a title-unique key to the second information processing apparatus to be used by the second information processing apparatus for generating a title key which is also stored on the recording medium. In a content reproduction process carried out by the second information processing apparatus, a title-unique key is generated from its own keys, such as master, media and LSI keys, in accordance with a title-unique-key generation sequence based on the stored title key, and is used for decrypting the contents.

Abstract: An automobile signal lamp of the type including a light source disposed in a lamp space which is elongated in left and right directions and of a reduced size in vertical directions. A top wall portion and a bottom wall portion constituting the lamp space are formed of synthetic resin material respectively, and are curved in the same direction in the vertical directions, or as viewed in the front view.