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    Pay broadcasting system with enhanced security against illegal access to a downloaded program in a subscriber terminal
    1.
    发明公开
    Pay broadcasting system with enhanced security against illegal access to a downloaded program in a subscriber terminal 审中-公开
    付费广播系统，防止未经授权的访问增加了保护，下载文件到用户终端

    公开(公告)号：EP1562378A1

    公开(公告)日：2005-08-10

    申请号：EP05009115.6

    申请日：1999-07-02

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： Masuda, Isao ,  Goto, Yoshimasa ,  Harada, Takenosuke ,  Machida, Kazuhiro ,  Kataoka, Mitsuteru

    IPC分类号： H04N7/16

    CPC分类号： H04H60/23 ,  H04H60/15 ,  H04N5/913 ,  H04N7/1675 ,  H04N21/2347 ,  H04N21/4334 ,  H04N21/4405 ,  H04N21/63345 ,  H04N2005/91364

    摘要： In a pay broadcasting system, data of a broadcast program is scrambled with a scramble key updated in a short period. The scramble key is encrypted with a first key assigned to the subscriber terminal. The first key is encrypted with a first master key set in the subscriber terminal. The security of a broadcast program stored for subsequent use in the subscriber terminal is enhanced as follows. A central station generates a second key-encrypted scramble key by encrypting the scramble key with a second key different from the first key and changeable in an interval shorter than a update interval of the first key; generates an encrypted second key by encrypting the second key with a second master key which has been commonly issued to subscriber terminals of the system; and broadcast the second key-encrypted scramble key and the encrypted second key together with the scrambled data of the program, the first key-encrypted scramble key and the encrypted first key in a multiplexed manner. When a broadcast program is to be stored, the subscriber terminal stores the scrambled data of the broadcast program and the second key-encrypted scramble key; decrypt the encrypted second key with the second master key into the second key, which is added to a stored program second key list. If the stored program is to be executed, the second key-encrypted scramble key is decrypted with a corresponding one of the second keys in the stored program second key list into a decrypted scramble key; and the scrambled data of the broadcast program is unscrambled with the decrypted scramble key.

    摘要翻译： 在付费广播系统，广播节目的数据进行加扰，在短期内更新加密键。 加扰密钥进行加密与分配给该用户终端的第一密钥。 所述第一密钥进行加密，在用户终端所设的第一主密钥。 存储在用户终端随后使用广播节目的安全性如下得以提高。 的中心站基因率通过用来自第一密钥的第二密钥不同，且多变在比所述第一密钥的更新间隔更短的间隔加密的加扰密钥的第二密钥加密的加扰密钥; 通过加密与已经常用发布给系统的用户终端的第二主密钥的第二密钥生成加密第二密钥的速率; 和广播所述第二密钥加密的加扰密钥，并用该程序，所述第一密钥加密的加扰密钥和以复用方式的加密的第一密钥的加扰数据被加密的第二密钥在一起。 当被存储的广播节目到，该用户终端存储该广播节目和所述第二密钥加密的加扰密钥的加扰数据; 解密用所述第二主密钥到所述第二密钥，所有这一切都被添加到所存储的程序的第二密钥列表加密的第二密钥。 如果所存储的程序将被执行时，第二密钥加密的加扰密钥与相应的在所存储的程序的第二密钥列表中的第二密钥中的一个成解密的加扰密钥解密; 和广播节目的加扰数据译出与解密的加扰密钥。

    Pay broadcasting system with enhanced security against illegal access to a down loaded program in a subscriber terminal
    7.
    发明公开
    Pay broadcasting system with enhanced security against illegal access to a down loaded program in a subscriber terminal 审中-公开
    付费广播系统，防止未经授权的访问增加了保护，下载文件到用户终端

    公开(公告)号：EP0969667A3

    公开(公告)日：2004-01-07

    申请号：EP99112808.3

    申请日：1999-07-02

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： Masuda, Isao ,  Goto, Yoshimasa ,  Harada, Takenosuke ,  Machida, Kazuhiro ,  Kataoka, Mitsuteru

    IPC分类号： H04N7/16

    CPC分类号： H04H60/23 ,  H04H60/15 ,  H04N5/913 ,  H04N7/1675 ,  H04N21/2347 ,  H04N21/4334 ,  H04N21/4405 ,  H04N21/63345 ,  H04N2005/91364

    摘要： In a pay broadcasting system, data of a broadcast program is scrambled with a scramble key updated in a short period. The scramble key is encrypted with a first key assigned to the subscriber terminal. The first key is encrypted with a first master key set in the subscriber terminal. The security of a broadcast program stored for subsequent use in the subscriber terminal is enhanced as follows. A central station generates a second key-encrypted scramble key by encrypting the scramble key with a second key different from the first key and changeable in an interval shorter than a update interval of the first key; generates an encrypted second key by encrypting the second key with a second master key which has been commonly issued to subscriber terminals of the system; and broadcast the second key-encrypted scramble key and the encrypted second key together with the scrambled data of the program, the first key-encrypted scramble key and the encrypted first key in a multiplexed manner. When a broadcast program is to be stored, the subscriber terminal stores the scrambled data of the broadcast program and the second key-encrypted scramble key; decrypt the encrypted second key with the second master key into the second key, which is added to a stored program second key list. If the stored program is to be executed, the second key-encrypted scramble key is decrypted with a corresponding one of the second keys in the stored program second key list into a decrypted scramble key; and the scrambled data of the broadcast program is unscrambled with the decrypted scramble key.

    Content usage management system and content usage management method
    8.
    发明公开
    Content usage management system and content usage management method 审中-公开
    系统和方法zum Verwalten von digitalen Inhalten

    公开(公告)号：EP1229425A1

    公开(公告)日：2002-08-07

    申请号：EP02001970.9

    申请日：2002-02-04

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： Higashi, Akio ,  Murakami, Hiroki ,  Matsuo, Takashi ,  Nakahara, Tohru ,  Namba, Takaaki ,  Goto, Yoshimasa ,  Nakanishi, Masanori ,  Miyazaki, Masaya ,  Kozuka, Masayuki

    IPC分类号： G06F1/00

    CPC分类号： G06F21/105 ,  G06F21/10

    摘要： A content usage management system 1 comprises a user terminal 200a using a content as a digital production and a server 100 managing usage of the content in the user terminal 200a over a communication network 300; wherein the sever 100 includes a user right information DB 120 that memorizes right information regarding a usage right of the content entitled to a user who uses the terminal 200a and a content information generation unit 170 that generates LT which is right information indicating a part of usage right entitled to the user based upon a request from the user and that sends the LT to the sever terminal 200a; and the user terminal 200a includes a communication unit that receives the LT sent from the server 100 and a license information processing unit 260 that controls usage of the content according to the usage right indicated on the received LT.

    摘要翻译： 内容使用管理系统1包括使用内容作为数字制作的用户终端200a和通过通信网络300管理用户终端200a中的内容的使用的服务器100; 其中，服务器100包括用户权限信息DB 120，其存储有关使用终端200a的用户的内容的使用权利的正确信息;以及内容信息生成单元170，其生成作为使用的一部分的正确信息的LT 基于来自用户的请求授予用户的权利，并将LT发送到服务器终端200a; 并且用户终端200a包括接收从服务器100发送的LT的通信单元和根据接收到的LT上指示的使用权限来控制内容的使用的许可信息处理单元260。

    Pay broadcasting system with enhanced security against illegal access to a down loaded program in a subscriber terminal
    10.
    发明公开
    Pay broadcasting system with enhanced security against illegal access to a down loaded program in a subscriber terminal 审中-公开
    付费广播系统，防止未经授权的访问增加了保护，下载文件到用户终端

    公开(公告)号：EP0969667A2

    公开(公告)日：2000-01-05

    申请号：EP99112808.3

    申请日：1999-07-02

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： Masuda, Isao ,  Goto, Yoshimasa ,  Harada, Takenosuke ,  Machida, Kazuhiro ,  Kataoka, Mitsuteru

    IPC分类号： H04N7/16

    CPC分类号： H04H60/23 ,  H04H60/15 ,  H04N5/913 ,  H04N7/1675 ,  H04N21/2347 ,  H04N21/4334 ,  H04N21/4405 ,  H04N21/63345 ,  H04N2005/91364

    摘要： In a pay broadcasting system, data of a broadcast program is scrambled with a scramble key updated in a short period. The scramble key is encrypted with a first key assigned to the subscriber terminal. The first key is encrypted with a first master key set in the subscriber terminal. The security of a broadcast program stored for subsequent use in the subscriber terminal is enhanced as follows. A central station generates a second key-encrypted scramble key by encrypting the scramble key with a second key different from the first key and changeable in an interval shorter than a update interval of the first key; generates an encrypted second key by encrypting the second key with a second master key which has been commonly issued to subscriber terminals of the system; and broadcast the second key-encrypted scramble key and the encrypted second key together with the scrambled data of the program, the first key-encrypted scramble key and the encrypted first key in a multiplexed manner. When a broadcast program is to be stored, the subscriber terminal stores the scrambled data of the broadcast program and the second key-encrypted scramble key; decrypt the encrypted second key with the second master key into the second key, which is added to a stored program second key list. If the stored program is to be executed, the second key-encrypted scramble key is decrypted with a corresponding one of the second keys in the stored program second key list into a decrypted scramble key; and the scrambled data of the broadcast program is unscrambled with the decrypted scramble key.

    摘要翻译： 在付费广播系统，广播节目的数据进行加扰，在短期内更新加密键。 加扰密钥进行加密与分配给该用户终端的第一密钥。 所述第一密钥进行加密，在用户终端所设的第一主密钥。 存储在用户终端随后使用广播节目的安全性如下得以提高。 的中心站基因率通过用来自第一密钥的第二密钥不同，且多变在比所述第一密钥的更新间隔更短的间隔加密的加扰密钥的第二密钥加密的加扰密钥; 通过加密与已经常用发布给系统的用户终端的第二主密钥的第二密钥生成加密第二密钥的速率; 和广播所述第二密钥加密的加扰密钥，并用该程序，所述第一密钥加密的加扰密钥和以复用方式的加密的第一密钥的加扰数据被加密的第二密钥在一起。 当被存储的广播节目到，该用户终端存储该广播节目和所述第二密钥加密的加扰密钥的加扰数据; 解密用所述第二主密钥到所述第二密钥，所有这一切都被添加到所存储的程序的第二密钥列表加密的第二密钥。 如果所存储的程序将被执行时，第二密钥加密的加扰密钥与相应的在所存储的程序的第二密钥列表中的第二密钥中的一个成解密的加扰密钥解密; 和广播节目的加扰数据译出与解密的加扰密钥。