Information-processing apparatus, control method, program and recording medium
    3.
    发明申请
    Information-processing apparatus, control method, program and recording medium 失效
    信息处理装置,控制方法,程序和记录介质

    公开(公告)号:US20050094805A1

    公开(公告)日:2005-05-05

    申请号:US10979708

    申请日:2004-11-02

    摘要: 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. In this way, data can be encrypted and decrypted by using the initialization vector IV. The present invention can be applied to a personal computer and a drive, which exchange data with each other by way of a predetermined interface.

    摘要翻译: 在读命令中指定的4字节LBA(逻辑块地址)被提供给第一和第二IV(初始化向量)生成单元。 初始化向量生成单元通过将典型的哈希函数应用于LBA,将LBA扩展为具有16字节大小的数据。 第一初始化向量生成单元将具有16字节大小的数据作为初始化向量IV输出到加密单元。 另一方面,第二初始化向量生成单元将具有16字节大小的数据作为初始化向量IV输出到解密单元。 加密单元通过使用从第一认证处理单元接收到的初始化向量IV和会话密钥Ks来加密输入数据。 另一方面,解密单元通过使用从第二认证处理单元接收的初始化向量IV和会话密钥Ks来解密输入数据。 以这种方式,可以使用初始化向量IV对数据进行加密和解密。 本发明可以应用于通过预定接口彼此交换数据的个人计算机和驱动器。

    Information recording medium, data processing method, and computer program
    6.
    发明申请
    Information recording medium, data processing method, and computer program 审中-公开
    信息记录介质,数据处理方法和计算机程序

    公开(公告)号:US20060150251A1

    公开(公告)日:2006-07-06

    申请号:US10559518

    申请日:2004-05-11

    IPC分类号: H04N7/16

    摘要: The present invention provides a configuration for preventing each entity code stored in information recording media from being leaked. Authoring studio code (ASC) and disc manufacturer code (DMC) are encrypted without failure and the encrypted codes are stored in information recording media. The data setting location in program map table (PMT) is controlled such that these entity codes will not overlap the seed area that provides key generating information, so that, if the packet storing the program map table storing authoring studio code (ASC) and disc manufacturer code (DMC) is set to an arbitrary position in a content packet sequence, these entity codes will not overlap the seed area that is non-encrypted data, thereby preventing these entity codes from being leaked outside.

    摘要翻译: 本发明提供一种用于防止存储在信息记录介质中的每个实体代码泄露的配置。 加密工作室代码(ASC)和光盘制造商代码(DMC)被加密而无故障,加密代码存储在信息记录介质中。 控制程序映射表(PMT)中的数据设置位置,使得这些实体代码不会与提供密钥生成信息的种子区域重叠,从而如果存储存储创作工作室代码(ASC)的程序映射表的数据包和盘 制造商代码(DMC)被设置在内容分组序列中的任意位置,这些实体代码将不与未加密数据的种子区域重叠,从而防止这些实体代码在外部泄漏。

    Information recording medium drive device
    7.
    发明申请
    Information recording medium drive device 审中-公开
    信息记录介质驱动装置

    公开(公告)号:US20050244001A1

    公开(公告)日:2005-11-03

    申请号:US10517783

    申请日:2004-04-05

    摘要: 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.

    摘要翻译: 本发明提供能够有效地防止存储在信息记录介质上的加密内容被滥用的配置。 在该结构中,作为通过使用另一个块密钥Kb 1加密的信息,存储用于生成要应用于解码加密内容的处理的块密钥所需的种子(种子2)。 此外,在种子(种子2)需要从设备传送到另一种的配置中,种子(种子2)和记录密钥K 2都从设备传送到另一个,作为通过使用 会话密钥。 在这种配置中,难以通过从信息记录介质或数据传输线路获取数据来分析种子(种子2)。 因此,分析使用种子生成的密钥并分析加密算法的难度增加。 因此,可以实现对高度安全性的内容的保护。

    Method and apparatus for processing information, information storage medium, and computer program
    9.
    发明申请
    Method and apparatus for processing information, information storage medium, and computer program 审中-公开
    用于处理信息的方法和装置,信息存储介质和计算机程序

    公开(公告)号:US20050144470A1

    公开(公告)日:2005-06-30

    申请号:US11019900

    申请日:2004-12-22

    摘要: 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.

    摘要翻译: 存储在信息记录介质中的内容以每单位为基础进行管理,并且防止未经授权的使用。 存储在信息记录介质中的内容被分成单位,并且用针对每个单元生成的单元密钥加密内容。 基于各种密钥生成信息生成单元密钥生成密钥。 通过将与每个单元对应的记录种子应用于单位密钥生成密钥来生成每个单元的单位密钥。 例如,基于单位密钥生成块密钥,并且为每3个扇区设置块模块单位块块生成块密钥。 使用块密钥以每块为单位进行加密处理。 在解密过程中,允许内容的解密取决于密钥生成信息,记录种子和存储在盘中的块种子的匹配。 因此防止了未经授权使用内容。

    Information processing apparatus, information recording medium, information processing method, and computer program
    10.
    发明授权
    Information processing apparatus, information recording medium, information processing method, and computer program 有权
    信息处理装置,信息记录介质,信息处理方法和计算机程序

    公开(公告)号:US08261096B2

    公开(公告)日:2012-09-04

    申请号:US10567505

    申请日:2004-08-10

    IPC分类号: G06F12/14 H04N7/167 H04L29/06

    摘要: 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.

    摘要翻译: 提供信息处理装置,信息记录介质,信息处理方法和计算机程序。 在存储许多内容的信息记录介质中,提供允许基于分段内容的使用管理的配置。 通过将存储的内容分割在信息记录介质中来设置与标题,索引和其他信息相对应的多个内容管理单元。 作为加密密钥的不同单位密钥被分配给不同的内容管理单元。 至少包含在每个内容管理单元中的内容实际数据通过使用单元密钥被加密,并且加密的数据被存储。 在内容再现中,识别单位,并且通过使用与每个单元对应的单元密钥来执行解密以进行再现。 例如,在存储许多内容的信息记录介质中,可以管理每个分段的内容。