Key delivery apparatus, terminal apparatus, recording medium, and key delivery system
    11.
    发明授权
    Key delivery apparatus, terminal apparatus, recording medium, and key delivery system 有权
    密钥传送装置,终端装置,记录介质和密钥传送系统

    公开(公告)号:US07539306B2

    公开(公告)日:2009-05-26

    申请号:US10649623

    申请日:2003-08-28

    IPC分类号: H04N7/167

    摘要: A key delivery apparatus that prevents improper use of contents, and manages a decryption key for decrypting encrypted content and a suppliable number showing how many times the decryption key is suppliable, with respect to one or more terminal apparatuses connected to a network. The key delivery apparatus receives a supply request for the decryption key from a terminal apparatus, and if the terminal apparatus is a legitimate supply target, judges whether the terminal apparatus is a first-type that manages a content-usage period or a second-type that does not manage the content-usage period, and if the suppliable number has a remaining number, supplies to the terminal apparatus, the decryption key and a key-usage period of the decryption key when judged that the terminal apparatus is the first-type and the decryption key when judged that the terminal apparatus is the second-type.

    摘要翻译: 关于连接到网络的一个或多个终端装置,防止不正当使用内容的密钥传送装置,并且管理用于解密加密内容的解密密钥和显示解密密钥可供应多少次的可供应数量。 密钥传送装置从终端装置接收对解密密钥的供给请求,如果终端装置是合法供给对象,则判断终端装置是管理内容使用期间的第一种还是第二类型 不管理内容使用期间,如果可提供的号码具有剩余号码,则在判断为终端装置为第一类型时向终端装置提供解密密钥和解密密钥的密钥使用期间 以及当判断为终端装置是第二类型时的解密密钥。

    Data transfer control device and data transfer control method
    12.
    发明授权
    Data transfer control device and data transfer control method 有权
    数据传输控制装置和数据传输控制方法

    公开(公告)号:US08996913B2

    公开(公告)日:2015-03-31

    申请号:US13810724

    申请日:2011-07-13

    IPC分类号: G06F11/00 G06F11/07 G06F13/28

    摘要: The data transfer control device of the present invention is capable of improving data transfer efficiency while discarding error data, a DMA parameter storing control unit (1112) temporarily stores parameters to a store resource; a data processing unit (1201) performs error detection processing for data that is transferred; a DMA parameter return control unit (1122) causes parameters used at transfer time of data for which the processing result in the error detection processing was an error to be returned as parameters for subsequent data transfer use from the store resource; and a completion notification delay control unit (1121), with regard to the parameters, causes the completion notification to a host system that indicates that data transfer has completed normally for each of the parameters to wait for normal completion of data transfer that uses parameters that had been set earlier than each of the first-mentioned parameters.

    摘要翻译: 本发明的数据传输控制装置能够在丢弃错误数据的同时提高数据传输效率,DMA参数存储控制单元(1112)将参数临时存储到存储资源; 数据处理单元(1201)对被传送的数据执行错误检测处理; DMA参数返回控制单元(1122)使得在错误检测处理的处理结果为错误的数据的传送时间使用的参数作为用于从存储资源的后续数据传送使用的参数返回; 和完成通知延迟控制单元(1121),关于参数,导致指示数据传输已经针对每个参数正常完成的主机系统的完成通知,以等待使用参数的参数的数据传输的正常完成 已经早于每个首先提到的参数。

    RESPONSE DEVICE, INTEGRATED CIRCUIT OF SAME, RESPONSE METHOD, AND RESPONSE SYSTEM
    13.
    发明申请
    RESPONSE DEVICE, INTEGRATED CIRCUIT OF SAME, RESPONSE METHOD, AND RESPONSE SYSTEM 有权
    响应设备,其集成电路,响应方法和响应系统

    公开(公告)号:US20120265839A1

    公开(公告)日:2012-10-18

    申请号:US13518982

    申请日:2011-06-20

    申请人: Yuusaku Ohta

    发明人: Yuusaku Ohta

    IPC分类号: G06F15/167

    摘要: The present invention performs efficient data transfer between devices. In particular, the present invention can reduce processing loads and power consumption of a response device 2 and increase overall throughput. When a request device 1 issues a direct transfer request to directly transfer data to or from a data storage unit 24 included in the response device 2, the response device 2 performs control so that data is directly transferred between a communication unit 23 and the data storage unit 24. The request device 1 is allowed to transparently and directly access the data storage unit 24 included in the response device 2 via the communication unit 24 between the request device 1 and the response device 2.

    摘要翻译: 本发明在设备之间执行有效的数据传输。 特别地,本发明可以减少响应装置2的处理负荷和功耗,并且增加总吞吐量。 当请求装置1发出直接传送请求以直接向包含在响应装置2中的数据存储单元24传送数据时,响应装置2执行控制,使得数据在通信单元23和数据存储器之间直接传送 单元24.允许请求设备1经由请求设备1和响应设备2之间的通信单元24透明地直接访问包括在响应设备2中的数据存储单元24。

    Content-duplication management system, apparatus and method, playback apparatus and method, and computer program
    15.
    发明授权
    Content-duplication management system, apparatus and method, playback apparatus and method, and computer program 失效
    内容复制管理系统,装置和方法,播放装置和方法以及计算机程序

    公开(公告)号:US07752433B2

    公开(公告)日:2010-07-06

    申请号:US10649624

    申请日:2003-08-28

    IPC分类号: H04L29/06

    摘要: A content management system formed from a playback apparatus that requests and plays content, and a content management apparatus that manages duplication and deletion of content. The playback apparatus notifies group information of the playback apparatus to the content management apparatus, acquires information from the content management apparatus showing whether requests are permitted, and duplicates/deletes content. By judging whether the playback apparatus belongs to a group, and notifying whether a duplication request is permitted or rejected, based on in-group and out-group remaining numbers that show the remaining number of duplications permitted of apparatuses in-group and out-group, respectively, the content management apparatus relaxes restrictions on in-group content duplication as compared with out-group content duplication, and thus improves convenience for users in a home network, while protecting the rights of copyright holders, with respect to content duplication and usage.

    摘要翻译: 由请求和播放内容的播放装置形成的内容管理系统以及管理内容的复制和删除的内容管理装置。 回放装置向内容管理装置通知播放装置的组信息,从内容管理装置获取表示是否允许请求的信息,并且复制/删除内容。 通过判断播放装置是否属于一个组,并且基于组内和组外剩余的数字来通知复制请求是否被允许或拒绝,所述剩余数字表示组内和组外的设备允许的剩余重复次数 内容管理装置与组外内容复制相比,放松了组内内容复制的限制,从而提高了家庭网络用户的便利性,同时在保护版权持有人的权利方面相对于内容复制和使用 。

    Transmission/reception system
    16.
    发明授权
    Transmission/reception system 失效
    发射/接收系统

    公开(公告)号:US07457410B2

    公开(公告)日:2008-11-25

    申请号:US10836239

    申请日:2004-05-03

    IPC分类号: H04L9/00

    摘要: A server and a client hold common secret information in respective secret information holding units. A server Cyclic Redundancy Check (CRC) unit in the server generates a CRC code after adding the secret information to communication data, and transmits the communication data with the CRC code attached. A client CRC unit of the client generates a CRC code after adding the secret information to communication data, and checks whether or not an error has occurred in the communication data on the communication path. Since the client holds the secret information, the client determines that an error has not occurred, and obtains the communication data. On the other hand, a router, which does not hold the secret information, is unable to obtain the communication data. This prevents the communication data from being transferred to devices outside an authorized domain.

    摘要翻译: 服务器和客户端在各个秘密信息保持单元中保存公用秘密信息。 服务器中的服务器循环冗余校验(CRC)单元在将秘密信息添加到通信数据后生成CRC代码,并发送带有附加CRC码的通信数据。 客户端CRC单元在将秘密信息添加到通信数据之后生成CRC码,并且检查通信路径中的通信数据中是否发生错误。 由于客户端保存秘密信息,所以客户机确定没有发生错误,并获得通信数据。 另一方面,不保存秘密信息的路由器不能获得通信数据。 这样可以防止通信数据被传送到授权域之外的设备。

    Encryption device using mask value to convert plain text into encrypted text
    19.
    发明授权
    Encryption device using mask value to convert plain text into encrypted text 有权
    加密设备使用掩码值将纯文本转换为加密文本

    公开(公告)号:US08265273B2

    公开(公告)日:2012-09-11

    申请号:US12517301

    申请日:2008-05-26

    IPC分类号: H04L9/22 G06F17/16

    摘要: An encryption circuit is provided which generates encrypted text from plain text using a key. The encryption circuit includes a randomized 8-bit inverse element calculation circuit which receives randomized input data that is obtained by adding, to input data on which predetermined processing is performed with the key, a predetermined input mask value determined depending on a random number, and which generates randomized output data that is obtained by adding, to an inverse element of the input data, an output mask value that is an inverse element of the input mask value, wherein the encryption circuit generates the encrypted text from the generated randomized output data.

    摘要翻译: 提供了一种使用密钥从纯文本生成加密文本的加密电路。 加密电路包括随机化的8位逆元素计算电路,其接收随机化的输入数据,该随机化输入数据是通过将与键执行预定处理的输入数据相加,取决于随机数确定的预定输入掩码值而获得的;以及 其生成通过将输入数据的反向元素加到作为输入掩码值的反向元素的输出掩码值而获得的随机化输出数据,其中所述加密电路从所生成的随机化输出数据生成加密文本。

    ENCRYPTION DEVICE, DECRYPTION DEVICE, ENCRYPTION METHOD, AND INTEGRATED CIRCUIT
    20.
    发明申请
    ENCRYPTION DEVICE, DECRYPTION DEVICE, ENCRYPTION METHOD, AND INTEGRATED CIRCUIT 有权
    加密设备,分解设备,加密方法和集成电路

    公开(公告)号:US20100086126A1

    公开(公告)日:2010-04-08

    申请号:US12517301

    申请日:2008-05-26

    IPC分类号: H04L9/28 G06F7/58

    摘要: There has been a problem that the maximum number of logical steps increases and processing speed decreases when a masking method in which S-Box is implemented using an inverse element calculation in a composite field as a countermeasure for power analysis attack on an AES cipher.An encryption device (1) which generates encrypted text from plain text using a key, the encryption device (1) includes a randomized 8-bit inverse element calculation unit (101) which receives randomized input data that is obtained by adding, to input data on which predetermined processing is performed with the key, a predetermined input mask value determined depending on a random number, and which generates randomized output data that is obtained by adding, to an inverse element of the input data, an output mask value that is an inverse element of the input mask value, wherein the encryption device generates the encrypted text from the generated randomized output data.

    摘要翻译: 存在当在复合字段中使用逆元素计算来实现S-Box的掩蔽方法作为对AES密码进行功率分析攻击的对策时,存在最大逻辑步数增加并且处理速度降低的问题。 一种使用密钥从纯文本生成加密文本的加密装置(1),所述加密装置(1)包括随机化的8比特逆元素计算单元(101),其接收通过将输入数据相加而获得的随机化输入数据 利用该键执行预定处理,根据随机数确定的预定输入掩码值,并且生成随机化的输出数据,所述随机化输出数据是通过将输入数据的反向元素与输入掩码值相加而获得的, 输入掩码值的逆元素,其中所述加密装置从所生成的随机化输出数据生成加密文本。