Patent application number | Description | Published |
20080256639 | Verification Method, Information Processing Device, Recording Medium, Verification System, Certification Program, and Verification Program - A virtual machine can be implemented by anyone because the interface and other information necessary for implementation are publicly available. Hence, if virtual machine is implemented maliciously, a program operating thereon can be made to operate maliciously instead of operating legitimately. | 10-16-2008 |
20090010437 | INFORMATION PROCESSING DEVICE, INFORMATION RECORDING MEDIUM, INFORMATION PROCESSING METHOD, AND COMPUTER PROGRAM - A data placement configuration which ensures seamless playback of contents having segment portions including multiple different variations of encrypted data is provided. With regard to contents having segment portions configured of multiple different variations of encrypted data to which individual segment keys have been applied, and non-segment portions serving as encrypted data to which a unit key has been applied, the placement of segment data and non-segment portion configuration data is determined such that the maximum jump distance executed at the time of playback processing is equal to or less than a maximum jump distance set beforehand. Data placement has been determined based on seek time, ECC block processing time, sequence key usage time which is key switchover time, and so forth. | 01-08-2009 |
20090041237 | INFORMATION PROCESSING APPARATUS, INFORMATION RECORDING MEDIUM MANUFACTURING APPARATUS, INFORMATION RECORDING MEDIUM, METHOD, AND COMPUTER PROGRAM - To provide a configuration in which a unit classification number corresponding to a content playback path is set based on various units. A unit classification number defining a playback path of content including encrypted data having different variations generated by encrypting a segment portion which forms the content by using a plurality of segment keys and encrypted content generated by encrypting a non-segment portion by a unit key is set based on various units, such as a content management unit and an index. In a CPS unit key file storing key generating information concerning CPS units as content management units, settings of unit classification numbers are indicated. Based on the CPS unit key file, a unit classification number to which content to be played back belongs can be obtained. | 02-12-2009 |
20100046915 | INFORMATION PROCESSING APPARATUS, DISK, INFORMATION PROCESSING METHOD, AND PROGRAM - An information processing apparatus includes a data processing unit that verifies data recorded on a disk and reproduces content recorded on the disk if a verification condition is satisfied. The data processing unit verifies the validity of an ID inserter that has recorded, on the disk, an ID corresponding to the disk. The data processing unit acquires an ID inserter certificate containing an apparatus ID of the ID inserter that has recorded the ID corresponding to the disk on the disk and an ID inserter blacklist having apparatus IDs of invoked ID inserters registered therein, determines whether the apparatus ID contained in the ID inserter certificate is registered in the ID inserter blacklist so as to verify the validity of the ID inserter that has recorded the ID corresponding to the disk, and stops reproduction of the content if it is determined that the ID inserter is not valid. | 02-25-2010 |
20100246355 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND PROGRAM - An information processing apparatus includes a data processing unit configured to perform data processing on data read from a data recordable disc. The data processing unit performs a physical mark verification process for verifying whether or not a physical mark that is identification data unique to each of mother discs used when the disc was manufactured has been recorded on the disc, and a signature verification process for obtaining, from the disc, a token containing an electronic signature generated on the basis of a medium ID that is an identifier unique to each disc by a content providing server that provided the recorded content of the disc and for performing signature verification, and reproduces recorded content of the disc under a condition in which the recording of a physical mark in the physical mark verification process has been confirmed and signature verification in the signature verification process holds true. | 09-30-2010 |
20100268944 | INFORMATION PROCESSING DEVICE, DISC, INFORMATION PROCESSING METHOD, AND PROGRAM - A configuration is provided wherein usage restrictions of an application are determined in accordance with timestamps. A certificate revocation list (CRL) in which the revocation information of a content owner who is a providing entity of an application program recorded in a disc is recorded is referred to verify whether or not a content owner identifier recorded in an application certificate is included in the CRL, and in the case that the content owner identifier is included in the CRL, comparison between a timestamp stored in a content certificate and a CRL timestamp is executed, and in the case that the content certificate timestamp has date data equal to or later than the CRL timestamp, utilization processing of the application program is prohibited or restricted. According to the present configuration, a configuration is realized wherein an unrevoked application is not subjected to utilization restriction, and only a revoked application is subjected to utilization restriction. | 10-21-2010 |
20110317983 | INFORMATION PROCESSING APPARATUS, INFORMATION RECORDING MEDIUM MANUFACTURING APPARATUS, INFORMATION RECORDING MEDIUM, METHOD, AND COMPUTER PROGRAM - To provide an apparatus, a recording medium and a method for effectively preventing unauthorized use of a content. A content containing broken data different from correct content member data is recorded on an information recording medium. Furthermore, transform data, as the correct member data, to be substituted for the broken data, and a fix-up table storing setting position information of the content are recorded on the information recording medium. During the content playback process, the transform data is substituted for the content member data in accordance with the fix-up table recorded on the information recording medium. With this arrangement, even if the encryption key corresponding to the encrypted content recorded on the information recording medium is leaked, an apparatus unable to acquire the transform data cannot play back the content. Unauthorized use of the content is thus controlled. | 12-29-2011 |
20120311318 | INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD AND PROGRAM - An information processing system includes: a client executing acquisition and reproduction of contents; a management server providing the client with content selection information applied for acquisition of contents; and a content providing server receiving the content selection information from the client and providing the content selected in accordance with the content selection information, wherein the content selection information includes content identifiers as identifiers of encrypted contents respectively encrypted by different encryption keys and range information indicating data areas of range data which is configuration data of respective encrypted contents, and the content providing server provides the client with an encrypted content formed by combining range data as partial data of the encrypted contents specified by the content identifiers and the range information. | 12-06-2012 |
20130073866 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD AND PROGRAM - An information processing apparatus includes a data processing section for reproducing contents stored in a medium having a general purpose area in which encrypted contents and corresponding utilization controlling information are stored and a protected area including a plurality of blocks having access limitation set thereto and including a block having an encryption key for decrypting the encrypted contents stored therein. The data processing section acquires utilization controlling information corresponding to a content from the general purpose area, decides, based on the utilization controlling information, whether validity period information indicative of a content utilization permission period is to be acquired from the utilization controlling information or the encryption key storage block, acquires the validity period information based on a result of the decision and then compares the acquired validity period information and current date information to decide permission or inhibition of content reproduction. | 03-21-2013 |
20130073871 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD AND PROGRAM - An information processing apparatus, including: a data processing section reproducing contents stored in a medium having a general purpose area in which encrypted contents and utilization controlling information corresponding to the contents are stored, and a protected area configured from a plurality of blocks to which access limitation is set and which include a block in which an encryption key for decrypting the contents and information of a plurality of validity periods indicative of content utilization permission periods applied to the application contents of the encryption key are stored, wherein the data processing section acquires the utilization controlling information of a reproduction object content, extracts selection information of validity period information to be applied to the content, and decides whether or not content reproduction is to be permitted by comparison between the validity period information selected from within the block and current date information in accordance with the selection information. | 03-21-2013 |
20130073872 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD AND PROGRAM - Disclosed herein is an information processing apparatus, including: a data processing section reproducing contents stored in a medium having a general purpose area storing encrypted contents and utilization controlling information corresponding to the contents, and a protected area including blocks to which access limitation is set and which include a title key storage block in which an encryption key for decrypting the contents and validity period information applied to the application contents of the encryption key are stored and a status storage block in which date information upon content first-time reproduction is stored; the data processing section acquires validity period information indicative of the content utilization permission period determined in response to date information upon the content first-time reproduction from the title key storage block and decides whether or not content reproduction is to be permitted based on comparison between the acquired validity period information and current date information. | 03-21-2013 |
20140115342 | INFORMATION PROCESSING APPARATUS, INFORMATION STORAGE MEDIUM, CONTENT MANAGEMENT SYSTEM, DATA PROCESSING METHOD, AND COMPUTER PROGRAM - A configuration for achieving efficient content verification processing based on hash values is provided. Hash values of hash units set as segmented data of a content stored on an information storage medium are recorded in a content hash table and are stored on the information storage medium together with the content. An information processing apparatus for executing content playback executes hash-value comparison processing based on one or more randomly selected hash values. Regardless of the data amount of content, the configuration can perform hash-value determination and comparison processing based on hash units having a small amount of data, so that user equipment for executing content playback can perform efficient content verification. | 04-24-2014 |
20140122887 | INFORMATION PROCESSING APPARATUS, INFORMATION STORAGE APPARATUS, INFORMATION PROCESSING SYSTEM, AND INFORMATION PROCESSING METHOD AND PROGRAM - There is provided an information processing apparatus including: a data processing unit, on which a medium as an information storage apparatus is mounted, which controls reproduction of content stored on the medium, wherein the data processing unit executes host device ID registration processing for outputting a host device ID, which is an identifier of the host device, to the medium and storing the host device ID on the medium, receives the host device ID, which is stored on the medium, from the medium after execution of the host device ID registration processing, executes connection consistency confirmation processing for executing matching processing between the received host ID and the host device ID of the host device, and executes or continues content reproduction under a condition that the matching processing has been established in the connection consistency confirmation processing, or stops the content reproduction if the matching processing has not been established. | 05-01-2014 |
20140177904 | RECORDING MEDIUM AND PRODUCING METHOD THEREOF, REPRODUCING METHOD AND REPRODUCING APPARATUS, AND COPYRIGHT MANAGING METHOD - A GUID as title information and a global serial number are recorded in a BCA of a digital video disc. A hash value of the GUID is embedded as an electronic watermark in a data area. When content data is reproduced from the digital video disc, a match of information of the two GUIDs is checked so as to prevent the digital video disc from being illegally copied. A lead-in area and a managing organization provide disc revocation lists. With a global serial number and a disc revocation list, content data can be prevented from being reproduced from an illegally distributed disc. A film WM detector detects data embedded in a movie shown in a theater so as to prevent content data from being reproduced from a disc on which the embedded data is recorded. Thus, content data can be prevented from being reproduced from an illegally distributed disc before a copyright supervisor of the content authorizes the disc to be distributed. | 06-26-2014 |
20140237235 | INFORMATION PROCESSING DEVICE, INFORMATION STORAGE DEVICE, SERVER, INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD, AND PROGRAM - Content usage control is realized on condition of the establishment of user authentication without having to communicate with a server or the like. An information storage device such as a memory card stores an encrypted content, a converted title key obtained by converting a title key which is an encryption key, and a user token obtained by converting binding secret information to be applied to calculate the title key from the converted title key. A reproducing device that decrypts and reproduces the encrypted content acquires the converted title key and the user token, and generates an authentication key on the basis of user identification information such as a user ID. Furthermore, the binding secret information is calculated by computation processing between the user token and the authentication key, the title key is calculated from the converted title key by applying the calculated binding secret information, and decryption processing of the encrypted content is executed by applying the calculated title key. | 08-21-2014 |