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1. 发明授权

US08301571B2 Method of packaging broadcast contents 有权
标题翻译：打包播放内容的方法
公开(公告)号：US08301571B2
公开(公告)日：2012-10-30
申请号：US11402981
申请日：2006-04-13
申请人： Sun-nam Lee , Myung-sun Kim , Sung-hyu Han , Young-sun Yoon , Jae-heung Lee , Bong-seon Kim , Moon-young Choi
发明人： Sun-nam Lee , Myung-sun Kim , Sung-hyu Han , Young-sun Yoon , Jae-heung Lee , Bong-seon Kim , Moon-young Choi
IPC分类号： G06F21/00
CPC分类号： G06Q30/02
摘要： A method of packaging broadcast contents are provided. The method includes: extracting a copy control bit from input broadcast contents and determining whether the broadcast contents will be stored after being encrypted based on the extracted copy control bit; creating usage rule information which includes an encryption method of the broadcast contents if it is determined that the broadcast contents will be stored after being encrypted; extracting the copy control bit from each new broadcast content sequentially input and detecting broadcast contents which include copy control bits indicating that the broadcast contents will be stored without being encrypted; and encrypting the input broadcast contents through the broadcast contents before the detected broadcast contents using the encryption method and packaging and storing the encrypted broadcast contents and the usage rule information. Therefore, the unauthorized copying of broadcast contents transmitted through a digital broadcast receiver can be prevented.
摘要翻译：提供一种封装广播内容的方法。该方法包括：从输入广播内容中提取复制控制位，并根据所提取的复制控制位确定是否在加密之后存储广播内容; 创建使用规则信息，如果确定在加密之后将存储广播内容，则包括广播内容的加密方法; 从每个新的广播内容中提取复制控制位，顺序地输入和检测包括指示广播内容将不被加密的复制控制位的广播内容; 并且通过使用加密方法的检测到的广播内容之前的广播内容来加密输入的广播内容，并且包装和存储加密的广播内容和使用规则信息。因此，可以防止通过数字广播接收机发送的广播内容的未经授权的复制。

2. 发明授权

US08005758B2 Encryption/decryption method and apparatus for controlling content use based on license information 有权
标题翻译：基于许可证信息来控制内容使用的加密/解密方法和装置
公开(公告)号：US08005758B2
公开(公告)日：2011-08-23
申请号：US11402859
申请日：2006-04-13
申请人： Sun-nam Lee , Myung-sun Kim , Sung-hyu Han , Young-sun Yoon , Jae-heung Lee , Bong-seon Kim , Moon-young Choi
发明人： Sun-nam Lee , Myung-sun Kim , Sung-hyu Han , Young-sun Yoon , Jae-heung Lee , Bong-seon Kim , Moon-young Choi
IPC分类号： G06Q99/00
CPC分类号： H04L63/104 , G06F21/10 , G06F2221/0704 , G06F2221/0706 , H04L9/0822 , H04L63/0428 , H04L63/102 , H04L2209/603
摘要： A method and apparatus for encrypting or decrypting digital content are provided. In the method, a binding range is selected from a plurality of binding ranges of content use based on license information of the content, and the content is encrypted based on the selected binding range so that the content can be used only within the selected binding range. Accordingly, it is possible to limit content use to a plurality of binding ranges of use of the content, using license information of the content.
摘要翻译：提供了一种用于加密或解密数字内容的方法和装置。在该方法中，基于内容的许可信息从多个内容使用的绑定范围中选择绑定范围，并且基于所选择的绑定范围来加密内容，使得内容可以仅在所选择的绑定范围内使用。因此，可以使用内容的许可信息来限制内容使用到使用内容的多个绑定范围。

3. 发明申请

US20060248340A1 Method and apparatus for checking proximity between devices using hash chain 有权
标题翻译：用于使用散列链检查设备之间的接近度的方法和装置
公开(公告)号：US20060248340A1
公开(公告)日：2006-11-02
申请号：US11385907
申请日：2006-03-22
申请人： Jae-heung Lee , Myung-sun Kim , Sung-hyu Han , Young-sun Yoon , Sun-nam Lee , Bong-seon Kim
发明人： Jae-heung Lee , Myung-sun Kim , Sung-hyu Han , Young-sun Yoon , Sun-nam Lee , Bong-seon Kim
IPC分类号： H04L9/00
CPC分类号： H04L63/0428 , H04L9/3236 , H04L9/3271 , H04L63/123 , H04L2209/38 , H04W12/02 , H04W12/06
摘要： A method of measuring round trip time (RTT) includes: chain-hashing at least one random number to create a plurality of hash values; (b) transmitting one of the created hash values to a device and starting to measure RTT of the device; and (c) receiving from the device a response to the transmitted hash value and ending the RTT measurement, thereby performing a more effective proximity check than a conventional proximity check requiring encryptions and decryptions of several tens of times through several thousands of times.
摘要翻译：一种测量往返时间（RTT）的方法包括：链哈希至少一个随机数以产生多个散列值; （b）将所创建的散列值中的一个发送到设备并开始测量设备的RTT; 并且（c）从设备接收对发送的散列值的响应并结束RTT测量，由此执行比需要几十倍数千次加密和解密的常规接近检查更有效的接近检查。

4. 发明授权

US09015077B2 Method and apparatus for efficiently encrypting/decrypting digital content according to broadcast encryption scheme 有权
标题翻译：根据广播加密方案有效地加密/解密数字内容的方法和装置
公开(公告)号：US09015077B2
公开(公告)日：2015-04-21
申请号：US11411797
申请日：2006-04-27
申请人： Bong-seon Kim , Myung-sun Kim , Sung-hyu Han , Young-sun Yoon , Sun-nam Lee , Jae-heung Lee
发明人： Bong-seon Kim , Myung-sun Kim , Sung-hyu Han , Young-sun Yoon , Sun-nam Lee , Jae-heung Lee
IPC分类号： G06F21/00 , G06Q20/12 , G06F21/10 , H04L9/08
CPC分类号： G06Q20/1235 , G06F21/10 , G06F2221/0771 , G06F2221/2107 , H04L9/0822 , H04L9/0825 , H04L9/0836 , H04L9/0891 , H04L2209/60 , H04L2209/603 , Y10S705/901 , Y10S705/902
摘要： A method of and apparatus for encrypting and/or decrypting content according to broadcast encryption scheme. The decryption method includes: determining whether or not a revoked device among devices that have licenses for predetermined content is present; and according to the determination result, selectively decrypting a content key encrypted by using a key to prevent the revoked device from decrypting the predetermined content. By doing so, an unnecessary encryption process and decryption process that occur when there is no revoked device are avoided.
摘要翻译：一种根据广播加密方案加密和/或解密内容的方法和装置。解密方法包括：确定是否存在具有预定内容的许可证的设备中的撤销设备; 并且根据确定结果，选择性地解密通过使用密钥加密的内容密钥，以防止被撤销的设备解密预定内容。通过这样做，避免了当没有撤销设备时发生的不必要的加密处理和解密过程。

5. 发明授权

US07653713B2 Method of measuring round trip time and proximity checking method using the same 失效
标题翻译：测量往返时间的方法及使用其的接近检查方法
公开(公告)号：US07653713B2
公开(公告)日：2010-01-26
申请号：US11340794
申请日：2006-01-27
申请人： Sung-hyu Han , Myung-sun Kim , Young-sun Yoon , Sun-nam Lee , Bong-seon Kim , Jae-heung Lee
发明人： Sung-hyu Han , Myung-sun Kim , Young-sun Yoon , Sun-nam Lee , Bong-seon Kim , Jae-heung Lee
IPC分类号： G06F15/16
CPC分类号： H04L12/66
摘要： A method of measuring round trip time (RTT) and a proximity checking method using the same. The method of measuring RTT includes: transmitting a hashed second random number and starting the RTT measurement; and receiving a hashed first random number from a device that received the hashed second random number and ending the RTT measurement, thereby greatly reducing repetitive encryption and decryption operations in the proximity check using a repetitive RTT measurement.
摘要翻译：一种测量往返时间（RTT）的方法和使用该方法的接近检查方法。测量RTT的方法包括：发送哈希二次随机数，开始RTT测量; 并从接收到散列的第二随机数的设备接收散列的第一随机数，并结束RTT测量，从而大大减少了使用重复RTT测量的邻近检查中的重复加密和解密操作。

6. 发明申请

US20080046730A1 Method and apparatus for providing content encrypted using broadcast encryption scheme in local server 审中-公开
标题翻译：用于在本地服务器中提供使用广播加密方案加密的内容的方法和装置
公开(公告)号：US20080046730A1
公开(公告)日：2008-02-21
申请号：US11368710
申请日：2006-03-07
申请人： Sung-hyu Han , Myung-sun Kim , Young-sun Yoon , Sun-nam Lee , Jae-heung Lee , Bong-seon Kim
发明人： Sung-hyu Han , Myung-sun Kim , Young-sun Yoon , Sun-nam Lee , Jae-heung Lee , Bong-seon Kim
IPC分类号： H04L9/00
CPC分类号： G11B20/00086 , G11B20/0021 , G11B20/00731 , G11B20/00855 , H04H20/63 , H04H60/23 , H04L9/0891 , H04L9/0894 , H04L2209/601 , H04N21/2347 , H04N21/25808 , H04N21/26613 , H04N21/436 , H04N21/43615 , H04N21/4405 , H04N21/4627 , H04N21/63345
摘要： A method and an apparatus for providing content encrypted in a broadcast encryption scheme to a plurality of devices in a local network are provided. The method includes: storing a minimal number of keys needed by the devices to decode the encrypted content among a plurality of keys that can be used in the predetermined encryption scheme; and transmitting the stored keys to the devices. Accordingly, it is possible for a local server having a small storage capacity to provide the encrypted content to the devices by storing only the minimal number of keys needed by the devices to decode the encrypted content.
摘要翻译：提供了一种用于向广播加密方案中加密的内容提供给本地网络中的多个设备的方法和装置。该方法包括：存储所述设备所需的最少数量的密钥，以便在可以在预定加密方案中使用的多个密钥中对加密的内容进行解码; 以及将存储的密钥发送到设备。因此，具有小存储容量的本地服务器可以通过仅存储设备所需的最少数量的密钥来对加密的内容进行解码来向设备提供加密的内容。

7. 发明申请

US20060253398A1 Method and apparatus for managing digital content 有权
标题翻译：用于管理数字内容的方法和装置
公开(公告)号：US20060253398A1
公开(公告)日：2006-11-09
申请号：US11410029
申请日：2006-04-25
申请人： Myung-sun Kim , Young-sun Yoon , Sun-nam Lee , Bong-seon Kim , Jae-heung Lee , Sung-hyu Han
发明人： Myung-sun Kim , Young-sun Yoon , Sun-nam Lee , Bong-seon Kim , Jae-heung Lee , Sung-hyu Han
IPC分类号： G06Q99/00
CPC分类号： G06F21/10
摘要： A method and apparatus for managing digital content, which can detect the leakage of an encryption key when the encryption key used for encrypting the digital content is leaked or cracked. When the encrypted digital content is decrypted by an illegal device, a module linked with the encrypted digital content is automatically driven and a digital content managing apparatus is then notified that the encrypted digital content has been decrypted by the illegal device such that the digital content managing apparatus can change the encryption key. Thus, it is possible to prevent the digital content from being continuously leaked due to the use of the same encryption key for encrypting subsequent digital content.
摘要翻译：一种用于管理数字内容的方法和装置，当用于加密数字内容的加密密钥泄漏或破解时，可以检测加密密钥的泄漏。当加密的数字内容被非法设备解密时，自动驱动与加密的数字内容链接的模块，然后通知数字内容管理装置加密的数字内容已被非法设备解密，使得数字内容管理设备可以改变加密密钥。因此，可以防止数字内容由于使用相同的加密密钥来加密后续数字内容而不断地泄漏。

8. 发明授权

US08122487B2 Method and apparatus for checking proximity between devices using hash chain 有权
标题翻译：用于使用散列链检查设备之间的接近度的方法和装置
公开(公告)号：US08122487B2
公开(公告)日：2012-02-21
申请号：US11385907
申请日：2006-03-22
申请人： Jae-heung Lee , Myung-sun Kim , Sung-hyu Han , Young-sun Yoon , Sun-nam Lee , Bong-seon Kim
发明人： Jae-heung Lee , Myung-sun Kim , Sung-hyu Han , Young-sun Yoon , Sun-nam Lee , Bong-seon Kim
IPC分类号： G06F7/04 , G06F15/16 , H04L9/32
CPC分类号： H04L63/0428 , H04L9/3236 , H04L9/3271 , H04L63/123 , H04L2209/38 , H04W12/02 , H04W12/06
摘要： A method of measuring round trip time (RTT) includes: chain-hashing at least one random number to create a plurality of hash values; (b) transmitting one of the created hash values to a device and starting to measure RTT of the device; and (c) receiving from the device a response to the transmitted hash value and ending the RTT measurement, thereby performing a more effective proximity check than a conventional proximity check requiring encryptions and decryptions of several tens of times through several thousands of times.
摘要翻译：一种测量往返时间（RTT）的方法包括：链哈希至少一个随机数以产生多个散列值; （b）将所创建的散列值中的一个发送到设备并开始测量设备的RTT; 并且（c）从设备接收对发送的散列值的响应并结束RTT测量，由此执行比需要几十倍数千次加密和解密的常规接近检查更有效的接近检查。

9. 发明申请

US20070174609A1 Apparatus and method for determining revocation key, and apparatus and method for decrypting contents using the same 审中-公开
标题翻译：用于确定撤销密钥的装置和方法，以及使用其解密内容的装置和方法
公开(公告)号：US20070174609A1
公开(公告)日：2007-07-26
申请号：US11398633
申请日：2006-04-06
申请人： Sung-hyu Han , Myung-sun Kim , Young-sun Yoon , Sun-nam Lee , Jae-heung Lee , Bong-seon Kim
发明人： Sung-hyu Han , Myung-sun Kim , Young-sun Yoon , Sun-nam Lee , Jae-heung Lee , Bong-seon Kim
IPC分类号： H04N7/16 , H04L9/32 , H04L9/00 , G06F17/30 , G06F7/04 , G06K9/00 , H03M1/68 , H04K1/00
CPC分类号： H04L63/064 , G06F21/10 , G06F2221/0753 , H04L9/0822 , H04L9/0836 , H04L9/0891 , H04L63/065 , H04L2209/601 , H04N7/173 , H04N21/2351 , H04N21/2585 , H04N21/26613 , H04N21/4353 , H04N21/4627 , H04N21/83555
摘要： A revocation key determining method for content protection. The revocation key determining method includes: identifying at least one of a plurality of groups on the basis of a structure in which groups, each consisting of nodes to which key sets for content protection are respectively assigned, are hierarchically arranged in a tree form; and detecting whether nodes belonging to the group are respectively revoked.
摘要翻译：用于内容保护的撤销密钥确定方法。撤销密钥确定方法包括：基于如下结构来识别多个组中的至少一个：其中，每个组由分别分配给用于内容保护的密钥集合的节点组成的组以树形分层布置; 并检测属于该组的节点是否分别被撤销。

10. 发明申请

US20070172069A1 Domain management method and apparatus 审中-公开
标题翻译：域管理方法和装置
公开(公告)号：US20070172069A1
公开(公告)日：2007-07-26
申请号：US11410033
申请日：2006-04-25
申请人： Bong-seon Kim , Myung-sun Kim , Sung-hyu Han , Young-sun Yoon , Sun-nam Lee , Jae-heung Lee
发明人： Bong-seon Kim , Myung-sun Kim , Sung-hyu Han , Young-sun Yoon , Sun-nam Lee , Jae-heung Lee
IPC分类号： H04L9/00
CPC分类号： H04L63/10 , G06F21/10 , H04L9/0891 , H04L63/065 , H04L2209/60 , H04L2463/101
摘要： A method and apparatus of protecting digital content within a domain is provided. if a device registered with a domain withdraws from the domain, a domain key used in the domain before withdrawal of the device is updated to a domain key which cannot be used by the device; and the domain key not exposed to the device is transmitted to a plurality of devices currently registered with the domain so that only the currently registered devices have the most recent domain key. Therefore, devices not registered with the domain and devices which previously registered with the home domain but withdrawn from the home domain can be prevented from using digital content currently shared within the domain. In addition, registered devices that withdraw from the home domain may use digital content legitimately downloaded from the home domain before they withdrew from the domain.
摘要翻译：提供一种保护域内数字内容的方法和装置。如果注册域的设备从域中退出，则在提取设备之前在域中使用的域密钥被更新为设备不能使用的域密钥; 并且未暴露于设备的域密钥被发送到当前在域中注册的多个设备，使得只有当前注册的设备具有最新的域密钥。因此，可以防止未注册到域的设备和以前在本地域注册但从归属域撤回的设备使用当前在域内共享的数字内容。此外，退出本地域的注册设备可以在他们退出域之前使用从归属域合法下载的数字内容。

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