Abstract: 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.

Abstract: The present invention can reliably prevent the contents of a recording medium from being illegally copied but allow them to be copied only for the purpose of personal use. The invention takes out title identifying information and medium identifying information of a DVD loaded on a hard-disk-containing DVD player and transmits those pieces of information to management server along with the apparatus identifying information of the hard-disk-containing DVD player so as to enquire about copying prohibition flag for a copying operation and control copying of the recorded contents of the DVD according to the copying prohibition flag. Thus, the invention prohibits copying when the management server judges that copying of the contents of the DVD by means of the hard-disk-containing DVD player is illegal, whereas it allows copying when the management server judges that copying of the contents of the DVD by means of the hard-disk-containing DVD player is for the purpose of personal use.

Abstract: An information processing apparatus includes: a memory in which an apparatus-unique key is stored, the apparatus-unique key being a key that is unique to the information processing apparatus; an input section that inputs user operation information; a communication section that performs data reception processing; a data processor that executes validity determination processing for the apparatus-unique key; and an output section that outputs a result of the validity determination processing executed by the data processor. The data processor receives, via the communication section, key-validity determination data for determining whether the apparatus-unique key is valid or invalid. The data processor also executes the apparatus-unique-key validity determination processing by using the key-validity determination data in response to a user instruction input via the input section, and outputs a result of the validity determination processing to the output section.

Abstract: A product mark including a public key certificate issued with respect to an information-recording-medium manufacturing entity or information-recording-medium manufacturing equipment, and an encrypted volume ID calculated by computation based on a product-mark-associated value such as a hash value generated on the basis of the product mark, and a volume ID as an identifier set with respect to a given set of discs to be manufactured, are generated. The product mark and the encrypted volume ID are set as information for generating a key used for decryption of encrypted content, and recorded onto a disc by a reflective-film-removal recording method. Due to this configuration, the product mark and the encrypted volume ID as key generating information cannot be read from a pirated disc produced by physically copying a pit pattern on the basis of a legitimate commercial disc, thereby making it possible to prevent unauthorized reproduction or use of content.

Abstract: An information processing apparatus, an information recording medium, an information processing method, and a computer program are provided. In an information recording medium storing many pieces of content, a configuration that allows use management on segmented content basis is provided. A plurality of content management units corresponding to title, index and other information are set by partitioning stored content in an information recording medium. Different unit keys that are encryption keys are allocated to different content management units. At least the content real data included in each content management unit is encrypted by use of the unit key and the encrypted data is stored. In content reproduction, units are identified and decryption is executed by use of a unit key corresponding to each unit for reproduction. In an information recording medium storing many pieces of content for example, each of segmented pieces of content may be managed.

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: A configuration for preventing authentication processing due to continuous use of an old authorized device certificate, and illegal use of contents is provided. An arrangement is made wherein with playback or recording processing of contents accompanying data transfer between two different devices such as a drive and a host or the like, when performing mutual authentication between devices for executing data transfer, the number of times of authentication is counted, and in the event of this reaching a predetermined upper limit value of the number of times of authentication, authentication processing is cancelled, and it is necessary to update a certificate to be applied to authentication. The present configuration eliminates contents use due to continuity of authentication processing to which an old certificate is applied, and enables prompting a user to obtain the newest certificate.

Abstract: The present invention provides an optical disc recording and reproducing apparatus having a function of communicating with a noncontact IC. The apparatus includes a chassis, an external antenna arranged for communication with a noncontact IC outside the chassis, an internal antenna arranged for communication with a noncontact IC included in an optical disc loaded in the chassis, a control section performing a search operation of searching for the noncontact IC outside the chassis and the noncontact IC in the optical disc, and a switching section changing conduction state between the external antenna and the control section and that between the internal antenna and the control section under the control of the control section.

Abstract: Disclosed herein is an optical recording apparatus which may record post pre-format recording information on an optical recording medium which has a guide portion formed in advance for guiding a light beam and a plurality of address portions for specifying individual positions of the guide portion, which may include position information detection means for detecting position information of a recording region in which significant information is recorded along the guide portion and a breakdown region which is part of the guide portion or/and the address portions and is broken down so as not to be detected using the light beam, servo means for controlling the position of the light beam based on the position information, and laser light intensity adjustment means for adjusting the intensity of the light beam in order to record information based on a predetermined format in the recording region and thermally break down the breakdown region.

Abstract: An information processing apparatus includes: a memory in which an apparatus-unique key is stored, the apparatus-unique key being a key that is unique to the information processing apparatus; an input section that inputs user operation information; a communication section that performs data reception processing; a data processor that executes validity determination processing for the apparatus-unique key; and an output section that outputs a result of the validity determination processing executed by the data processor. The data processor receives, via the communication section, key-validity determination data for determining whether the apparatus-unique key is valid or invalid. The data processor also executes the apparatus-unique-key validity determination processing by using the key-validity determination data in response to a user instruction input via the input section, and outputs a result of the validity determination processing to the output section.

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: The present invention relates to an information processing apparatus, an information processing method, a program, and a recording medium for sending and receiving data in a manner enhancing security. A host and a drive unit are interconnected by a suitable bus and exchange data over that bus. The host requests the drive unit periodically to issue an initializing vector IV for use in encrypting and decrypting the data exchanged over the bus. The drive unit supplies the initializing vector IV to the host on request. If these steps are not carried out periodically, the drive unit stops outputting data to the host. The present invention is adapted advantageously to personal computers equipped with a drive unit for reproducing data from a recording medium.

Abstract: A product mark including a public key certificate issued with respect to an information-recording-medium manufacturing entity or information-recording-medium manufacturing equipment, and an encrypted volume ID calculated by computation based on a product-mark-associated value such as a hash value generated on the basis of the product mark, and a volume ID as an identifier set with respect to a given set of discs to be manufactured, are generated. The product mark and the encrypted volume ID are set as information for generating a key used for decryption of encrypted content, and recorded onto a disc by a reflective-film-removal recording method. Due to this configuration, the product mark and the encrypted volume ID as key generating information cannot be read from a pirated disc produced by physically copying a pit pattern on the basis of a legitimate commercial disc, thereby making it possible to prevent unauthorized reproduction or use of content.

Abstract: An information processing apparatus, an authentication processing method, and computer program provided. The present invention includes an interface for carrying out data transfer processing, and a data processor for executing data processing. The data processor executes authentication processing with a target of data transfer as a condition of executing data processing accompanying data transfer via the interface. In the authentication processing, the data processor verifies channel type applied in data transfer based on data stored in a public key certificate held by an authentication counterpart, and determines whether or not it is possible to establish authentication based on the channel type.

Abstract: A device key 46 is implemented on a drive 4 side. To securely transmit the device key 46 to a host 5, the device key 46 is encrypted with a bus key. The host 5 side decrypts the device key with the bus key. A medium unique key calculating block 55 calculates a medium unique key with an MKB 12, a medium ID, and the decrypted device key 46. When the calculated medium key is a predetermined value, the drive 4 is revoked and the process is stopped. The medium unique key is supplied to an encrypting/decrypting module 54. A content key is obtained with an encrypted title key 14 and a CCI 15. With the content key, an encrypted content is decrypted and a content that is recorded is encrypted.

Abstract: A 4-byte LBA (logical block address) specified in a read command is supplied to first and second IV (initialization vector) generation units. The initialization-vector generation units each extend the LBA to data with a size of 16 bytes by applying typically a hash function to the LBA. The first initialization-vector generation unit outputs the data with a size of 16 bytes to an encryption unit as an initialization vector IV. On the other hand, the second initialization-vector generation unit outputs the data with a size of 16 bytes to a decryption unit as an initialization vector IV. The encryption unit encrypts input data by using the initialization vector IV and a session key Ks received from a first authentication-processing unit. On the other hand, the decryption unit decrypts input data by using the initialization vector IV and the session key Ks received from a second authentication-processing unit.

Abstract: In the case where data are recorded in a medium, after a specific type of a medium in which recording is performed is set, if it is detected that information is recorded on an address of specific position at which decoding information is to be located, then data at a section in which the decoding information is located are replaced with predetermined information and recording is performed. Alternatively, when data are to be reproduced from a medium, after it is discriminated that data are reproduced from a medium of a specific type, if it is determined that data are reproduced from an address of specific position at which the decoding information is to be located, then reproduction data of a section in which the decoding information is located is replaced with predetermined information and outputted.

Abstract: A content, restored in an information processing apparatus, for replaying a content, such as a personal computer, is fed back to a drive device. The drive device detects an electronic watermark from the transferred restored content, and controls content outputting from the drive device. In this arrangement, an electronic watermark is reliably detected and content replay control is performed based on the detected electronic watermark in any type of coding including MPEG 2, MPEG-1, MPEG-4 regardless of type of coding or even if the content is encrypted.

Abstract: A signal processing system includes a reproducing apparatus for reading information from a recording medium having unique information and an information processing apparatus for mutually authenticating and connecting the reproducing apparatus. The reproducing apparatus includes a final encryption key generating portion that generates a content information encryption key in accordance with intermediate key information. A first transmitting portion transmits the intermediate key information to the information processing apparatus. A second transmitting portion transmits the content information encryption key to the information processing apparatus. The information processing apparatus includes a content information encrypting portion that encrypts content information using the content information encryption key, and an intermediate key information encrypting portion that encrypts the intermediate key information using key information unique to the recording medium.

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.