Data transmission system
    21.
    发明授权
    Data transmission system 有权
    数据传输系统

    公开(公告)号:US07263613B2

    公开(公告)日:2007-08-28

    申请号:US11112268

    申请日:2005-04-22

    IPC分类号: G06F1/24

    摘要: A cipher key is generated by first information shared in secrete between a data transmitting unit 10 and a data receiving unit 20, second information derived from duplication control information of transmit data and third information which is time change information shared between the data transmitting unit and the data receiving unit to cipher data by a CPU 12 by using the above-mentioned cipher key to transmit, from the data transmitting unit 10 to the data receiving unit 20, transmit data in which the duplication control information and the time change information are added to the ciphered data.

    摘要翻译: 密钥由数据发送单元10和数据接收单元20之间的秘密共享的第一信息生成,从发送数据的复制控制信息导出的第二信息和作为​​数据发送单元与数据发送单元20之间共享的时间变化信息的第三信息 数据接收单元,通过使用上述密码密钥从CPU 12对数据进行加密,从数据发送单元10向数据接收单元20发送其中添加了复制控制信息和时间变化信息的数据 加密数据。

    Information transmission system and method, drive device and access method, information recording medium, device and method for producing recording medium
    27.
    发明授权
    Information transmission system and method, drive device and access method, information recording medium, device and method for producing recording medium 有权
    信息传输系统和方法,驱动装置和访问方法,信息记录介质,记录介质的制造装置和方法

    公开(公告)号:US07636843B1

    公开(公告)日:2009-12-22

    申请号:US09807824

    申请日:2000-08-18

    摘要: A security module is provided in a data recording medium, data to be written to the data recording medium is encrypted with an content key different from one data to another, and the content key is safely stored in the security module. Also, the security module makes a mutual authentication using the public-key encryption technology with a drive unit to check that the counterpart is an authorized (licensed) unit, and then gives the content key to the counterpart, thereby preventing data from being leaked to any illegal (unlicensed) unit. Thus, it is possible to prevent copyrighted data such as movie, music, etc. from being copied illegally (against the wish of the copyrighter of the data).

    摘要翻译: 在数据记录介质中提供安全模块,用不同于一个数据的内容密钥对要写入数据记录介质的数据进行加密,并将内容密钥安全地存储在安全模块中。 此外,安全模块使用具有驱动单元的公共密钥加密技术进行相互认证,以检查对方是授权(许可)单元,然后向对方发送内容密钥,从而防止数据泄漏到 任何非法(无牌)单位。 因此,可以防止诸如电影,音乐等的受版权保护的数据被非法复制(相对于数据的复制者的愿望)。

    Information processing system and method
    28.
    发明授权
    Information processing system and method 失效
    信息处理系统和方法

    公开(公告)号:US07346170B2

    公开(公告)日:2008-03-18

    申请号:US10204731

    申请日:2001-12-21

    IPC分类号: H04L9/00 H04K1/00

    摘要: An information processing system and method are disclosed in which information processing is performed using an enabling key block (EKB) in association with a tree structure including category subtrees. A key tree is produced, which include subtrees that are grouped in accordance with categories and are managed by category entities. The EKB includes data produced by selecting a path in the key tree and encrypting a higher-level key in the selected path using a lower-level key in the selected path. The EKB is then provided to a device. A requester, which requests production of the EKB, may produce a root key or may request a key distribution center (KDC) to produce a root key. If the (KDC) produces the EKB, it may also request a category entity to produce a sub-EKB.

    摘要翻译: 公开了一种信息处理系统和方法,其中使用与包括类别子树的树结构相关联的使能密钥块(EKB)来执行信息处理。 生成一个关键树,其中包括根据类别分组并由类别实体管理的子树。 EKB包括通过选择密钥树中的路径并使用所选路径中的较低级密钥加密所选路径中的较高级密钥而产生的数据。 然后将EKB提供给设备。 要求生产EKB的请求者可以生成根密钥,或者可以请求密钥分发中心(KDC)产生根密钥。 如果(KDC)生成EKB,它也可以请求类别实体来生成子EKB。

    Information processing device and method
    29.
    发明授权
    Information processing device and method 失效
    信息处理装置及方法

    公开(公告)号:US07346169B2

    公开(公告)日:2008-03-18

    申请号:US10069176

    申请日:2001-06-21

    IPC分类号: H09L9/14

    摘要: An information processing device, information processing method and a recording medium are provided. Storage included in the information processing device is operable to store a node key and a leaf key, the leaf key being unique to the information processing device and the node key being unique to each node of a hierarchical network of nodes having a hierarchical tree structure. A decryption processor performs decryption processing to detect whether an encrypted decryption key for decrypting encrypted data is stored in at least one of on the information processing device or on a recording medium. When the encrypted decryption key is detected, the decryption processor is operable to calculate the decryption key by decrypting the encrypted decryption key. However, when the encrypted decryption key is not detected, the decryption processor is operable to calculate the decryption key by decrypting a key block using one of the one or more node keys stored in the storage and the leaf key stored in the storage. The calculated decryption key may then be encrypted and stored by the decryption processor on at least one of the recording medium or the memory.

    摘要翻译: 提供信息处理装置,信息处理方法和记录介质。 包含在信息处理装置中的存储器可操作以存储节点密钥和叶子密钥,叶信息对于信息处理设备是唯一的,节点密钥对于具有分层树结构的分层网络的每个节点是唯一的。 解密处理器执行解密处理,以检测用于解密加密数据的加密解密密钥是否存储在信息处理装置或记录介质中的至少一个中。 当检测到加密的解密密钥时,解密处理器可操作以通过解密加密的解密密钥来计算解密密钥。 然而,当未检测到加密的解密密钥时,解密处理器可操作以通过使用存储在存储器中的一个或多个节点密钥和存储在存储器中的叶子密钥中的一个来解密密钥块来计算解密密钥。 所计算的解密密钥然后可以由解密处理器加密并存储在记录介质或存储器中的至少一个上。

    Information processing system, information processing method, and information processing device
    30.
    发明授权
    Information processing system, information processing method, and information processing device 失效
    信息处理系统,信息处理方法和信息处理装置

    公开(公告)号:US07260719B1

    公开(公告)日:2007-08-21

    申请号:US09719460

    申请日:2000-04-11

    IPC分类号: H04L9/00

    摘要: Prior to data transmission, a protocol for performing mutual authentication and sharing a plurality of encryption keys is executed between a CPU 12 on the side of a data transmission apparatus 10 and a CPU 22 on the side of a data receiving apparatus 20. The data transmission apparatus 10 causes the CPU 12 to encrypt data requiring the assurance of a transmission band by a first encryption key and to transmit the data in a first transmission mode via an input/output interface 16, and also to encrypt related data relating to the data by a second encryption key and to transmit the related data in a second transmission mode via the input/output interface 16. The data receiving apparatus 20 causes the CPU 22 to decode, by a first encryption key, the data requiring the assurance of a transmission band received in the first transmission mode via an input/output interface 24, and also to decode, by a second encryption key, the related data received in the second transmission mode via the input/output interface 24.

    摘要翻译: 在数据发送之前,在数据发送装置10侧的CPU12和数据接收装置20侧的CPU22之间执行用于执行相互认证并共享多个加密密钥的协议。 数据发送装置10使得CPU 12通过第一加密密钥加密需要保证传输频带的数据,并且经由输入/输出接口16以第一传输模式发送数据,并且还加密与 通过第二加密密钥的数据,并且经由输入/输出接口16以第二传输模式发送相关数据。 数据接收装置20使得CPU 22通过第一加密密钥通过输入/输出接口24解码需要保证以第一传输模式接收的传输频带的数据,并且还通过第二加密来解码 键,经由输入/输出接口24以第二传输模式接收的相关数据。