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1.发明公开Information transmission method and apparatus for combining multiplexing and encryption 有权Übertragungsverfahrenund -Vorrichtung zum kombinierten Multiplexen undVerschlüsseln
公开(公告)号：EP0903886A2
公开(公告)日：1999-03-24
申请号：EP98117568.0
申请日：1998-09-16
IPC分类号： H04L9/00
CPC分类号： H04N7/1675 , H04L9/00 , H04L63/0428 , H04L63/065 , H04L2209/60
摘要： An information transmission system (100) transmits an encrypted information (It) comprised of a plurality of information units (Iu) each hierarchically encrypted and multiplexed to each other is communicated between at least two parties. The information transmission system (100) is constructed by a transmitting unit (110) and a receiving unit (130). The transmitting unit (110) is provided with an information unit generator (111) which produces the information unit (Iu); a scrambler (112) which encrypts the information unit (Iu) to produce an encrypted information unit (Iue), and multiplexer (113) which multiplexes at least one of those information unit (Iu) and said encrypted information unit (Iue) to produce a multiplexed information unit (Im). The receiving unit (130) is provided with a lower layer descrambler (132) which decrypts the encrypted information (It) to produce a multiplexed information unit (Im), demultiplexer (133) which demultiplexes the multiplexed information unit (Im) into any of encrypted information unit (Iue), multiplexed information unit (Iue) and information unit (Iu), and information unit descrambler (134) which decrypts the encrypted information unit (Iue) .
摘要翻译： 信息传输系统（100）发送由多个信息单元（Iu）组成的加密信息（Io），每个信息单元（Iu）彼此分层加密和多路复用在至少两方之间进行通信。 信息传输系统（100）由发送单元（110）和接收单元（130）构成。 发送单元（110）设置有产生信息单元（Iu）的信息单元发生器（111）。 加密信息单元（Iu）以产生加密信息单元（Iue）的加扰器（112）和多路复用器（113），其将这些信息单元（Iu）和所述加密信息单元（Iue）中的至少一个复用以产生 复用信息单元（Im）。 接收单元（130）设置有下层解扰器（132），其对加密信息（It）进行解密以产生多路复用信息单元（Im），解复用器（133）将多路复用信息单元（Im）解复用为 加密信息单元（Iue），复用信息单元（Iue）和信息单元（Iu）以及解密加密信息单元（Iue）的信息单元解扰器（134）。
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2.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
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。
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3.发明授权
公开(公告)号：EP0903886B1
公开(公告)日：2006-03-15
申请号：EP98117568.0
申请日：1998-09-16
CPC分类号： H04N7/1675 , H04L9/00 , H04L63/0428 , H04L63/065 , H04L2209/60
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4.发明公开
公开(公告)号：EP0903886A3
公开(公告)日：2004-01-02
申请号：EP98117568.0
申请日：1998-09-16
CPC分类号： H04N7/1675 , H04L9/00 , H04L63/0428 , H04L63/065 , H04L2209/60
摘要： An information transmission system (100) transmits an encrypted information (It) comprised of a plurality of information units (Iu) each hierarchically encrypted and multiplexed to each other is communicated between at least two parties. The information transmission system (100) is constructed by a transmitting unit (110) and a receiving unit (130). The transmitting unit (110) is provided with an information unit generator (111) which produces the information unit (Iu); a scrambler (112) which encrypts the information unit (Iu) to produce an encrypted information unit (Iue), and multiplexer (113) which multiplexes at least one of those information unit (Iu) and said encrypted information unit (Iue) to produce a multiplexed information unit (Im). The receiving unit (130) is provided with a lower layer descrambler (132) which decrypts the encrypted information (It) to produce a multiplexed information unit (Im), demultiplexer (133) which demultiplexes the multiplexed information unit (Im) into any of encrypted information unit (Iue), multiplexed information unit (Iue) and information unit (Iu), and information unit descrambler (134) which decrypts the encrypted information unit (Iue) .
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5.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
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.
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6.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
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。
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