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公开(公告)号：US07356144B2
公开(公告)日：2008-04-08
申请号：US10398702
申请日：2002-11-12
CPC分类号： H04H60/23 , H04L9/0822 , H04L9/0838 , H04L2209/60 , H04N7/161 , H04N7/1675 , H04N21/2347 , H04N21/4405 , H04N21/4627 , H04N21/63345 , H04N21/8355
摘要： A method of transmitting a content to a reception side includes the steps of encrypting the content by use of a scramble key that varies with time, encrypting scramble-key-associated information that includes at least the scramble key and usage-control information, the usage-control information indicative of usage of the content on the reception side, and transmitting the encrypted content and the encrypted scramble-key-associated information to the reception side.
摘要翻译： 将内容发送到接收侧的方法包括以下步骤：使用随时间变化的加扰密钥对内容进行加密，加密至少包括加扰密钥和使用控制信息的加密密钥相关信息，使用控制信息 - 指示在接收侧使用内容的控制信息，以及将加密的内容和加密的加扰密钥相关信息发送到接收侧。
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2.发明授权Content transmission apparatus, content reception apparatus, content transmission program, and content reception program 失效内容发送装置，内容接收装置，内容发送程序和内容接收程序公开(公告)号：US07567674B2
公开(公告)日：2009-07-28
申请号：US10433068
申请日：2002-10-03
IPC分类号： H04L9/00
CPC分类号： H04N21/2347 , H04N7/1675 , H04N21/4405 , H04N21/4408 , H04N21/835
摘要： A content transmission method, a content reception method, an apparatus and a computer program using same, that improve the efficiency of descrambling a scrambled content, make the management of cryptography keys for descrambling easy, and protect the copyright of contents, are provided. A content transmission apparatus 3 that encrypts and transmits contents and a content reception apparatus 5 that receives the encrypted contents are provided. The content transmission apparatus 3 includes a content scrambling unit 7 that encrypts contents using a scrambling key Ks, a content key , a work key Kw, a master key Km, and a multiplexing unit 9 that transmits multiplexed contents. The content reception apparatus 5 includes a separating unit 13 that receives and separates the multiplexed encrypted content, and a content descrambling unit 15 that obtains the contents by descrambling encrypted information separated by the separating unit 13.
摘要翻译： 提供对加密内容进行解扰的效率的内容发送方法，内容接收方法，装置和计算机程序，提供对解密的密码密钥的管理容易，保护内容的版权。 提供加密发送内容的内容发送装置3和接收加密内容的内容接收装置5。 内容发送装置3包括使用加密密钥Ks，内容密钥，工作密钥Kw，主密钥Km和发送多路复用内容的复用单元9对内容进行加密的内容加扰单元7。 内容接收装置5包括分离单元13，其分离多路复用的加密内容，以及内容解扰单元15，其通过对由分离单元13分离的加密信息进行解扰来获得内容。
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公开(公告)号：US20060155989A1
公开(公告)日：2006-07-13
申请号：US10524601
申请日：2003-08-15
申请人： Yusei Nishimoto , Tatsuya Kurioka , Seiichi Namba
发明人： Yusei Nishimoto , Tatsuya Kurioka , Seiichi Namba
IPC分类号： H04L9/00
CPC分类号： H04N21/44204 , H04N5/913 , H04N7/1675 , H04N21/2347 , H04N21/26606 , H04N21/4325 , H04N21/4405 , H04N21/4627 , H04N21/47211 , H04N21/63345 , H04N21/8355 , H04N21/8549 , H04N2005/91364
摘要： A method of transmitting contents, which are to be received at a reception side where a portion of the contents is previewed while the contents are not accessible for playing other than for a preview purpose, includes the steps of encrypting the contents by a first encryption key, generating information indicative of an elapsed time of the contents that indicates a relationship between positions on a time axis of the contents representing an amount of time that passes as the contents are played and a time count that accrues as a preview time when the contents are previewed, encrypting the first encryption key and the information indicative of an elapsed time of the contents by a second encryption key, thereby generating first encrypted information, encrypting the second encryption key and content-usage control information by a third encryption key, thereby generating second encrypted information, the content-usage control information indicating usage of the contents on the reception side, and transmitting the encrypted contents, the first encrypted information, and the second encrypted information to the reception side.
摘要翻译： 一种发送内容的方法，其中，在内容不能访问内容不能预览的情况下，在内容的一部分被预览的接收侧被接收的内容包括以下步骤：通过第一加密密钥对内容进行加密 生成指示内容的经过时间的信息，该内容指示表示作为播放内容的通过的时间量的内容的时间轴上的位置与当内容为期间的预览时间之间的时间计数之间的关系 通过第二加密密钥加密第一加密密钥和指示内容的经过时间的信息，从而生成第一加密信息，通过第三加密密钥加密第二加密密钥和内容使用控制信息，从而产生第二加密密钥 加密信息，指示在接收si上内容的使用的内容使用控制信息 de，并且将加密内容，第一加密信息和第二加密信息发送到接收方。
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公开(公告)号：US07380135B2
公开(公告)日：2008-05-27
申请号：US10524601
申请日：2003-08-15
申请人： Yusei Nishimoto , Tatsuya Kurioka , Seiichi Namba
发明人： Yusei Nishimoto , Tatsuya Kurioka , Seiichi Namba
CPC分类号： H04N21/44204 , H04N5/913 , H04N7/1675 , H04N21/2347 , H04N21/26606 , H04N21/4325 , H04N21/4405 , H04N21/4627 , H04N21/47211 , H04N21/63345 , H04N21/8355 , H04N21/8549 , H04N2005/91364
摘要： A method of transmitting contents, which are to be received at a reception side where a portion of the contents is previewed while the contents are not accessible for playing other than for a preview purpose, includes the steps of encrypting the contents by a first encryption key, generating information indicative of an elapsed time of the contents that indicates a relationship between positions on a time axis of the contents representing an amount of time that passes as the contents are played and a time count that accrues as a preview time when the contents are previewed, encrypting the first encryption key and the information indicative of an elapsed time of the contents by a second encryption key, thereby generating first encrypted information, encrypting the second encryption key and content-usage control information by a third encryption key, thereby generating second encrypted information, the content-usage control information indicating usage of the contents on the reception side, and transmitting the encrypted contents, the first encrypted information, and the second encrypted information to the reception side.
摘要翻译： 一种发送内容的方法，其中，在内容不能访问内容不能预览的情况下，在内容的一部分被预览的接收侧被接收的内容包括以下步骤：通过第一加密密钥对内容进行加密 生成指示内容的经过时间的信息，该内容指示表示作为播放内容的通过的时间量的内容的时间轴上的位置与当内容为期间的预览时间之间的时间计数之间的关系 通过第二加密密钥加密第一加密密钥和指示内容的经过时间的信息，从而生成第一加密信息，通过第三加密密钥加密第二加密密钥和内容使用控制信息，从而产生第二加密密钥 加密信息，指示在接收si上内容的使用的内容使用控制信息 de，并且将加密内容，第一加密信息和第二加密信息发送到接收方。
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