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    • 1. 发明授权
    • Information recording medium, information processing device, information processing method, and computer program
    • 信息记录介质,信息处理装置,信息处理方法和计算机程序
    • US07734047B2
    • 2010-06-08
    • US10515271
    • 2004-03-05
    • Tsuyoshi NakayamaChikako MoriYoshimichi KitayaYoshikazu Kouno
    • Tsuyoshi NakayamaChikako MoriYoshimichi KitayaYoshikazu Kouno
    • H04N7/167
    • G06F21/10G11B20/00086G11B20/00202G11B20/0021G11B20/00847H04L9/0836H04L2209/60
    • There are provided an information recording medium, an information processing apparatus, an information processing method, and a computer program, which can realize users' convenience for using content in accordance with a license and copyright protection. An information recording medium stores an encrypted content file including encrypted content, usage right information of the encrypted content, and encryption key information necessary for a decrypting process for the encrypted content. Thus, a user can acquire a license (usage right information) and key information necessary for decryption of the content, together with the content, from the information recording medium, without acquiring the license (usage rights) by connection to a license provider. Therefore, it is no longer necessary to perform a process of acquiring the license (usage rights) from the license provider when the content is to be used, whereby user convenience is improved, and license-based content copyright management can also be ensured.
    • 提供了一种信息记录介质,信息处理设备,信息处理方法和计算机程序,其可以实现用户根据许可和版权保护使用内容的便利。 信息记录介质存储包含加密内容的加密内容文件,加密内容的使用权信息和加密内容的解密处理所需的加密密钥信息。 因此,用户可以从信息记录介质获取内容的解密所需的许可证(使用权利信息)和密钥信息,而不通过连接到许可证提供者获取许可证(使用权限)。 因此,在使用内容的情况下,不再需要从许可证提供者获取许可证(使用权利)的处理,从而提高用户便利性,还可以确保基于许可的内容版权管理。
    • 9. 发明授权
    • Information recording medium and information processing method for accessing content with license or copyright protection
    • 用于通过许可或版权保护访问内容的信息记录介质和信息处理方法
    • US08712048B2
    • 2014-04-29
    • US12801101
    • 2010-05-21
    • Tsuyoshi NakayamaChikako MoriYoshimichi KitayaYoshikazu Kouno
    • Tsuyoshi NakayamaChikako MoriYoshimichi KitayaYoshikazu Kouno
    • G06F21/00
    • G06F21/10G11B20/00086G11B20/00202G11B20/0021G11B20/00847H04L9/0836H04L2209/60
    • There are provided an information recording medium, an information processing apparatus, an information processing method, and a computer program, which can realize users' convenience for using content in accordance with a license and copyright protection. An information recording medium stores an encrypted content file including encrypted content, usage right information of the encrypted content, and encryption key information necessary for a decrypting process for the encrypted content. Thus, a user can acquire a license (usage right information) and key information necessary for decryption of the content, together with the content, from the information recording medium, without acquiring the license (usage rights) by connection to a license provider. Therefore, it is no longer necessary to perform a process of acquiring the license (usage rights) from the license provider when the content is to be used, whereby user convenience is improved, and license-based content copyright management can also be ensured.
    • 提供了一种信息记录介质,信息处理设备,信息处理方法和计算机程序,其可以实现用户根据许可和版权保护使用内容的便利。 信息记录介质存储包含加密内容的加密内容文件,加密内容的使用权信息和加密内容的解密处理所需的加密密钥信息。 因此,用户可以从信息记录介质获取内容的解密所需的许可证(使用权利信息)和密钥信息,而不通过连接到许可证提供者获取许可证(使用权限)。 因此,在使用内容的情况下,不再需要从许可证提供者获取许可证(使用权利)的处理,从而提高用户便利性,还可以确保基于许可的内容版权管理。
    • 10. 发明授权
    • Information processing system and method using encryption key block
    • 信息处理系统和方法采用加密密钥块
    • US07957537B2
    • 2011-06-07
    • US11879639
    • 2007-07-18
    • Yoshimichi KitayaRyuji IshiguroYoshitomo OsawaTomoyuki Asano
    • Yoshimichi KitayaRyuji IshiguroYoshitomo OsawaTomoyuki Asano
    • H04L9/08
    • H04L9/0836G11B20/00086G11B20/0021H04L9/0891H04L2209/60
    • An information processing system and method using an encryption key block sets sub-trees classified based on data processing ability of the devices (capability) in a key tree in which respective keys are corresponded to a root, nodes and leaves of a tree in which a plurality of devices are constituted as the leaves, generates a sub-enabling key block which is effective for an entity in a managing subject of each sub-tree (entity), and generates an enabling key block decodable only by the entities having common capability. Also, an information processing system and method using an encryption key block manages a partial tree of a key tree (sub-tree), generates a sub-enabling key block based only on a key set corresponding to nodes or leaves included in the sub-tree, and generates an enabling key block decodable only by selected entities by using the sub-enabling key block. Thus, it is possible to generate and distribute an enabling key block corresponding to data processing ability of a device and to manage devices by dividing a hierarchical key tree structure.
    • 使用加密密钥块的信息处理系统和方法基于密钥树中的设备(能力)的数据处理能力分类的子树,其中各个密钥对应于树的根,节点和树叶,其中 多个设备被构成为叶子,生成对于每个子树(实体)的管理对象中的实体有效的子启用密钥块,并且生成仅能够由具有共同能力的实体解码的启用密钥块。 此外,使用加密密钥块的信息处理系统和方法管理密钥树(子树)的部分树,仅基于与包括在子树中的节点或叶子相对应的密钥集来生成子启用密钥块, 并且通过使用子启用密钥块来生成仅由选择的实体可解码的启用密钥块。 因此,可以生成并分配与设备的数据处理能力相对应的启用密钥块,并且通过划分分层密钥树结构来管理设备。