Methods and apparatuses for distributing system secret parameter group and encrypted intermediate key group for generating content encryption and decryption deys
    1.
    发明申请
    Methods and apparatuses for distributing system secret parameter group and encrypted intermediate key group for generating content encryption and decryption deys 审中-公开
    用于分发系统秘密参数组和加密中间密钥组的方法和装置,用于生成内容加密和解密系统

    公开(公告)号:US20060165233A1

    公开(公告)日:2006-07-27

    申请号:US10547376

    申请日:2004-12-15

    IPC分类号: H04L9/00

    摘要: A key issuing center (11) distributes a system secret parameter group that is information necessary for generating a content key used for encrypting a content to a server (12), and an encrypted intermediate key group set that is information necessary for generating a content key used for decrypting the content to output apparatuses (13a to 13n). The server (12) generates the content key based on the system secret parameter group and a time varying parameter group, encrypts the content based on the content key, and distributes the encrypted content and the time varying parameter group to the output apparatuses (13a to 13n). The output apparatuses (13a to 13n) generates a content key based on the encrypted intermediate key group set and the received time varying parameter group, decrypts the encrypted content based on the content key, and outputs to outside.

    摘要翻译: 密钥发行中心(11)将作为生成用于加密内容的内容密钥所必需的信息的系统秘密参数组分发给服务器(12),以及加密的中间密钥组集合,其是生成内容密钥所必需的信息 用于将内容解密到输出设备(13a至13n)。 服务器(12)基于系统秘密参数组和时变参数组生成内容密钥,基于内容密钥加密内容,并将加密内容和时变参数组分发给输出设备(13a) 至13 n)。 输出装置(13a〜13n)基于加密的中间密钥组和接收到的时变参数组生成内容密钥,根据内容密钥对加密的内容进行解密,并输出到外部。

    Content distribution server, key assignment method, content output apparatus, and key issuing center
    3.
    发明申请
    Content distribution server, key assignment method, content output apparatus, and key issuing center 失效
    内容分发服务器,密钥分配方法,内容输出设备和密钥发放中心

    公开(公告)号:US20070033416A1

    公开(公告)日:2007-02-08

    申请号:US10577448

    申请日:2004-12-15

    摘要: The present invention is a content distribution system for distributing contents. The content distribution system (1) includes a key issuing center (11), a server (12), eight output apparatuses (13a) to (13h), and a communication path (10) that connects them to each other. Here, a pair of the key issuing center (11) and each of the output apparatuses (13a) to (13h) is previously given an individual key shared between them. For example, the key issuing center (11) shares an individual key IKa with the output apparatus (13a), an individual key IKb with the output apparatus (13b), and an individual key IKh with the output apparatus (13h).

    摘要翻译: 本发明是用于分发内容的内容分发系统。 内容分发系统(1)包括密钥发行中心(11),服务器(12),八个输出设备(13a)至(13h)以及将它们彼此连接的通信路径(10)。 这里,一对密钥发行中心(11)和每个输出装置(13a)至(13h)预先被给予它们之间共享的单独密钥。 例如,密钥发行中心(11)与输出设备(13a)共享一个单独的密钥IKa,与输出设备(13b)共享一个单独的密钥IKb以及与输出设备(13h)的单独密钥IKh) 。

    Key distribution system
    4.
    发明申请
    Key distribution system 审中-公开
    关键配电系统

    公开(公告)号:US20090238368A1

    公开(公告)日:2009-09-24

    申请号:US10569961

    申请日:2005-01-31

    IPC分类号: H04L9/08 H04L9/06

    摘要: The cloning source of an authorized receiving device cannot be identified. A key distribution system 1 concerning the present invention includes: a communication channel 10; a key distribution center 11; a server 12; and receiving devices 13a to 13n. The key distribution center 11 distributes, to the server 12, the information necessary for distributing shared keys SK to the receiving devices 13a to 13n, and distributes the individual information group EMMG necessary for receiving the shared keys SK from the server 12. The server 12 generates the shared keys SK, generates the common information ECM based on the shared keys SK and the system secret variable group set SPGS, and distributes the common information ECM to the receiving devices 13a to 13n. The receiving devices 13a to 13n obtain the shared keys SK based on the individual information group EMMG and the common information ECM and outputs them to outside.

    摘要翻译: 授权接收设备的克隆源无法识别。 关于本发明的密钥分发系统1包括:通信信道10; 密钥分配中心11; 服务器12; 以及接收装置13a〜13n。 密钥分配中心11向服务器12分配向接收设备13a至13n分配共享密钥SK所需的信息,并且从服务器12分发用于接收共享密钥SK所必需的个人信息组EMMG。服务器12 生成共享密钥SK,基于共享密钥SK和系统秘密变量组集SPGS生成公共信息ECM,并将公共信息ECM分配给接收装置13a〜13n。 接收设备13a至13n基于个人信息组EMMG和公共信息ECM获得共享密钥SK并将其输出到外部。

    Unauthorized Device Detection Device, Unauthorized Device Detection System, Unauthorized Device Detection Method, Program, Recording Medium, and Device Information Update Method
    5.
    发明申请
    Unauthorized Device Detection Device, Unauthorized Device Detection System, Unauthorized Device Detection Method, Program, Recording Medium, and Device Information Update Method 有权
    未经授权的设备检测设备,未经授权的设备检测系统,未经授权的设备检测方法,程序,记录介质和设备信息更新方法

    公开(公告)号:US20070283162A1

    公开(公告)日:2007-12-06

    申请号:US10589288

    申请日:2005-12-12

    摘要: An unauthorized apparatus detection device, playback device, unauthorized apparatus detection system, information collection device, unauthorized apparatus detection method, a program, recording medium, apparatus information update method, and integrated circuit can detect clones of a playback device. In a management server 2, a reception processing unit 241 acquires a user terminal identifier and a first random number from a user terminal targeted for unauthorized apparatus detection, judges whether a second management server random number, which is stored in a storage unit 23 in correspondence with the user terminal identifier, matches the first user terminal random number. If the two fail to match, a display unit 22 displays a message indicating that a clone exists. If the two match, a terminal information generation unit 243 generates a new random number, and writes the generated random number as the second random number in the storage unit 23. A transmission processing unit 246 transmits the generated random number to the user terminal via a transmission/reception unit 246 and the user terminal updates the first user terminal random number to the generated random number.

    摘要翻译: 未经授权的装置检测装置,回放装置,未经授权的装置检测系统,信息收集装置,未经授权的装置检测方法,程序,记录介质,装置信息更新方法和集成电路可以检测回放装置的克隆。 在管理服务器2中,接收处理单元241从针对未授权设备检测的用户终端获取用户终端标识符和第一随机数,判断存储在存储单元23中的第二管理服务器随机数是否对应 用户终端标识符与第一用户终端随机数匹配。 如果两者不匹配,则显示单元22显示指示克隆存在的消息。 如果两者匹配,终端信息生成单元243生成新的随机数,并将所生成的随机数作为第二随机数写入存储单元23。 发送处理单元246经由发送/接收单元246将生成的随机数发送给用户终端,并且用户终端将第一用户终端随机数更新为所生成的随机数。

    Unauthorized Device Detection Device And Unauthorized Device Detection System
    9.
    发明申请
    Unauthorized Device Detection Device And Unauthorized Device Detection System 审中-公开
    未经授权的设备检测设备和未经授权的设备检测系统

    公开(公告)号:US20080016001A1

    公开(公告)日:2008-01-17

    申请号:US11791853

    申请日:2005-12-12

    IPC分类号: G06Q10/00 G06F17/30

    摘要: To provide an unauthorized device detection system capable of finding and specifying a device that was manufactured or altered unauthorizedly. A DVD player 400a writes its own device ID to a memory card 200a. When a user purchases content, a register device 300 reads a media ID and the device ID from the memory card 200a, and transmits the media ID and the device ID to a management server device 100. The management server device 100 calculates, based on pairs of media IDs and device IDs stored beforehand and the received pair of media ID and device ID, a total number of media IDs corresponding to the received device ID, and compares the calculated total number with a threshold value. If the total number exceeds the threshold value, the management server device 100 judges that the DVD player identified by the received device ID is an unauthorized device.

    摘要翻译: 提供一种未经授权的设备检测系统,能够查找和指定未经授权制造或更改的设备。 DVD播放器400a将其自己的设备ID写入存储卡200a。 当用户购买内容时,注册设备300从存储卡200a读取媒体ID和设备ID,并将媒体ID和设备ID发送到管理服务器设备100。 管理服务器装置100基于预先存储的媒体ID和设备ID以及接收到的媒体ID和设备ID对,计算与所接收的设备ID相对应的媒体ID的总数,并将计算出的总数与 阈值。 如果总数超过阈值,则管理服务器装置100判断由接收到的设备ID识别的DVD播放机是未经授权的设备。

    Computer System and Computer Program Executing Encryption or Decryption
    10.
    发明申请
    Computer System and Computer Program Executing Encryption or Decryption 有权
    计算机系统和计算机程序执行加密或解密

    公开(公告)号:US20070237326A1

    公开(公告)日:2007-10-11

    申请号:US11578837

    申请日:2005-04-15

    IPC分类号: H04L9/10

    摘要: A computer system having resistance to timing attacks based on measuring processing times is offered. The computer system encrypts or decrypts a plain text or ciphertext via a process of converting the partial data on the plain text or the encrypted text into conversion data. A conversion table includes one piece of conversion data corresponding to the partial data at the start position of the line table area and includes data not associated with the conversion in the other position. A computer program includes: an operation instruction group for calculating the predetermined position of the corresponding conversion data in the conversion table by using the acquired partial data; and a read instruction group for reading out the conversion data from the position calculated from the conversion table.

    摘要翻译: 提供了一种基于测量处理时间具有抵抗定时攻击的计算机系统。 计算机系统通过将纯文本或加密文本上的部分数据转换为转换数据的处理来对明文或密文进行加密或解密。 转换表包括与行表区域的开始位置处的部分数据相对应的一条转换数据,并且包括与另一位置的转换不相关的数据。 计算机程序包括:操作指令组,用于通过使用所获取的部分数据来计算转换表中相应的转换数据的预定位置; 以及读取指示组,用于从从转换表计算出的位置读出转换数据。