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21. 发明申请

US20100183148A1 RECORDING KEYS IN A BROADCAST-ENCRYPTION-BASED SYSTEM 有权
标题翻译：基于加密加密的系统中的记录卡
公开(公告)号：US20100183148A1
公开(公告)日：2010-07-22
申请号：US12356067
申请日：2009-01-19
申请人： Thomas Alexander Bellwood , Robert Glen Deen , Hongxia Jin , Jeffrey Bruce Lotspiech , Sigfredo Ismael Nin , Matthew Francis Rutkowski
发明人： Thomas Alexander Bellwood , Robert Glen Deen , Hongxia Jin , Jeffrey Bruce Lotspiech , Sigfredo Ismael Nin , Matthew Francis Rutkowski
IPC分类号： H04L9/06
CPC分类号： H04L9/0822 , H04L9/16 , H04L63/06 , H04L2209/60 , H04L2209/606 , H04L2463/062 , H04N7/1675 , H04N21/2541 , H04N21/4334 , H04N21/4408 , H04N21/4627 , H04N21/63345
摘要： According to one embodiment of the present invention, a method for protecting content in a broadcast-encryption-based system, where the devices in the system receive a recording key table. Each device generates a set of recording keys from the recording key table using a media key variant calculated from the broadcast encryption system's media key block. The digital content is encrypted in a title key picked by the recorder. The selected title key is also encrypted in each one of the recorder's generated recording keys. To play back the content, a player uses one of its generated recording keys to decrypt the title key and the decrypt the content. The recording key table is designed so that any two devices are guaranteed to have at least one key in common during normal operation, although during a forensic situation, this rule can be abandoned.
摘要翻译：根据本发明的一个实施例，一种用于保护基于广播加密的系统中的内容的方法，其中系统中的设备接收记录密钥表。每个设备使用从广播加密系统的媒体密钥块计算的媒体密钥变体从记录密钥表生成一组记录密钥。数字内容以记录器拾取的标题密钥加密。所选择的标题密钥也在记录器生成的记录密钥中的每一个中被加密。要播放内容，播放器使用其生成的记录密钥之一来解密标题密钥并对内容进行解密。记录键表被设计成使得任何两个装置在正常操作期间被保证具有至少一个共同的钥匙，尽管在取证情况下，该规则可以被放弃。

22. 发明申请

US20090214029A1 Unified Broadcast Encryption System 有权
标题翻译：统一广播加密系统
公开(公告)号：US20090214029A1
公开(公告)日：2009-08-27
申请号：US12131076
申请日：2008-05-31
申请人： Hongxia Jin , Jeffrey Bruce Lotspiech
发明人： Hongxia Jin , Jeffrey Bruce Lotspiech
IPC分类号： H04L9/00 , G06F17/00
CPC分类号： H04L9/0836 , G09C5/00 , H04L2209/606
摘要： A system and method is disclosed for performing unified broadcast encryption and traitor tracing for digital content. In one embodiment a media key tree is divided into S subtrees, the media key tree including media keys and initial values, which may be random values. The digital content is divided into a plurality of segments and at least some of the segments are converted into a plurality of variations. The random values are transformed into media key variations and a separate media key variant is assigned to each of the subdivided subtrees. A unified media key block including the media key tree is stored on the media.
摘要翻译：公开了一种用于对数字内容进行统一广播加密和叛逆追踪的系统和方法。在一个实施例中，媒体密钥树被划分为S子树，媒体密钥树包括媒体密钥和初始值，其可以是随机值。数字内容被分成多个段，并且至少一些段转换成多个变体。将随机值转换为媒体密钥变体，并将分离的媒体密钥变体分配给每个细分子树。包含媒体密钥树的统一媒体密钥块被存储在媒体上。

23. 发明申请

US20080192939A1 METHOD FOR BROADCAST ENCRYPTION AND KEY REVOCATION OF STATELESS RECEIVERS 有权
标题翻译：广播加密的方法和无状态接收者的关键重现
公开(公告)号：US20080192939A1
公开(公告)日：2008-08-14
申请号：US12061084
申请日：2008-04-02
申请人： Jeffrey Bruce Lotspiech , Dalit Naor , Simeon Naor
发明人： Jeffrey Bruce Lotspiech , Dalit Naor , Simeon Naor
IPC分类号： H04L9/14 , H04L9/08 , H04L9/28
CPC分类号： H04L63/0428 , G11B20/0021 , H04L9/0836 , H04L9/0891 , H04L12/18 , H04L2209/605 , H04L2209/606
摘要： A tree is used to partition stateless receivers in a broadcast content encryption system into subsets. Two different methods of partitioning are disclosed. When a set of revoked receivers is identified, the revoked receivers define a relatively small cover of the non-revoked receivers by disjoint subsets. Subset keys associated with the subsets are then used to encrypt a session key that in turn is used to encrypt the broadcast content. Only non-revoked receivers can decrypt the session key and, hence, the content.
摘要翻译：一棵树用于将广播内容加密系统中的无状态接收器分成子集。公开了两种不同的分割方法。当识别出一组撤销的接收者时，撤销的接收者通过不相交的子集定义非撤销的接收者的相对较小的覆盖。与子集相关联的子集密钥然后用于加密会话密钥，会话密钥又用于加密广播内容。只有非撤销的接收者可以解密会话密钥，因此可以解密内容。

24. 发明授权

US07240200B2 System and method for guaranteeing software integrity via combined hardware and software authentication 有权
标题翻译：通过组合的硬件和软件认证来保证软件完整性的系统和方法
公开(公告)号：US07240200B2
公开(公告)日：2007-07-03
申请号：US10259542
申请日：2002-09-26
申请人： Jeffrey Bruce Lotspiech
发明人： Jeffrey Bruce Lotspiech
IPC分类号： H04L9/00 , G06F17/30
CPC分类号： H04L9/3249 , G06F21/64 , G06Q10/087 , H04L9/302 , H04L9/3236 , H04L2209/127 , H04L2209/56 , H04L2209/603
摘要： A system, method, and computer program product enabling individual user devices to authenticate and validate a digital message sent by a distribution center, without requiring transmissions to the distribution center. The center transmits the message with an appended modulus that is the product of two specially selected primes. The transmission also includes an appended authentication value that is based on an original message hash value, a new message hash value, and the modulus. The new message hash value is designed to be the center's public RSA key; a corresponding private RSA key is also computed. Individual user devices combine a digital signet, a public modulus, preferably unique hardware-based numbers, and an original message hash to compute a unique integrity value K. Subsequent messages are similarly processed to determine new integrity values K′, which equal K if and only if new messages originated from the center and have not been corrupted.
摘要翻译：一种系统，方法和计算机程序产品，其使得各个用户设备能够对分发中心发送的数字消息进行认证和验证，而不需要向分发中心传输。中心传输具有两个特别选择的素数的乘积的附加模数的消息。传输还包括基于原始消息散列值，新消息散列值和模数的附加认证值。新消息哈希值被设计为中心的公共RSA密钥; 还计算相应的专用RSA密钥。单个用户设备组合数字签名，公共模块，优选地基于唯一的基于硬件的号码和原始消息散列以计算唯一的完整性值K.类似地处理后续消息以确定新的完整性值K'，其等于K if 只有新消息始发于中心并且没有被破坏。

25. 发明申请

US20060129490A1 System, method, and service for delivering multimedia content by means of a permission to decrypt titles on a physical media 有权
标题翻译：用于通过对物理介质上的标题进行解密的许可来传送多媒体内容的系统，方法和服务
公开(公告)号：US20060129490A1
公开(公告)日：2006-06-15
申请号：US11009272
申请日：2004-12-10
申请人： Bradley Collar , Jeffrey Bruce Lotspiech , Florian Pestoni , Michael Ripley , Spencer Stephens
发明人： Bradley Collar , Jeffrey Bruce Lotspiech , Florian Pestoni , Michael Ripley , Spencer Stephens
IPC分类号： G06F17/60
CPC分类号： G06F21/10
摘要： Enhanced multimedia content on physical media interacts with the user through a media player and the Internet. Enhanced multimedia utilizes IDs for pieces of content on the media and a media key block. On the enhanced media is a file with a list of URLs. As the enhanced media plays a title requiring an external permission for decryption, the media player accesses the URL for that title and obtains the permission. The permission may be purchased or provided for free. Secure encryption and transmission of permission is accomplished by broadcast encryption using a media key block. Each media has a unique set of keys that allow the media player to process the media key block; however, each media follows a unique path through the media key block. All legitimate media players obtain the media key; circumvention devices cannot decipher the media key block.
摘要翻译：物理媒体上的增强型多媒体内容通过媒体播放器和互联网与用户交互。增强多媒体利用媒体上的内容片段和媒体密钥块的ID。在增强型媒体上是一个包含URL列表的文件。由于增强型媒体播放需要外部解密权限的标题，媒体播放器访问该标题的URL并获得该权限。许可可以免费购买或提供。通过使用媒体密钥块的广播加密来实现安全加密和许可传输。每个媒体都有一组唯一的密钥，允许媒体播放器处理媒体密钥块; 然而，每个媒体遵循通过媒体密钥块的唯一路径。所有合法媒体播放器获取媒体密钥; 规避设备不能破译媒体密钥块。

26. 发明授权

US07039803B2 Method for broadcast encryption and key revocation of stateless receivers 有权
公开(公告)号：US07039803B2
公开(公告)日：2006-05-02
申请号：US09770877
申请日：2001-01-26
申请人： Jeffrey Bruce Lotspiech , Dalit Naor , Simeon Naor
发明人： Jeffrey Bruce Lotspiech , Dalit Naor , Simeon Naor
IPC分类号： H04L9/00
CPC分类号： H04L63/0428 , G11B20/0021 , H04L9/0836 , H04L9/0891 , H04L12/18 , H04L2209/605 , H04L2209/606
摘要： A tree is used to partition stateless receivers in a broadcast content encryption system into subsets. Two different methods of partitioning are disclosed. When a set of revoked receivers is identified, the revoked receivers define a relatively small cover of the non-revoked receivers by disjoint subsets. Subset keys associated with the subsets are then used to encrypt a session key that in turn is used to encrypt the broadcast content. Only non-revoked receivers can decrypt the session key and, hence, the content.

27. 发明授权

US06883097B1 Coincidence-free media key block for content protection for recordable media 有权
标题翻译：无记录媒体关键块，用于可记录媒体的内容保护
公开(公告)号：US06883097B1
公开(公告)日：2005-04-19
申请号：US09575740
申请日：2000-05-22
申请人： Jeffrey Bruce Lotspiech , Ariel Virgil Mirles , Dalit Naor , Sigfredo Ismael Nin
发明人： Jeffrey Bruce Lotspiech , Ariel Virgil Mirles , Dalit Naor , Sigfredo Ismael Nin
IPC分类号： H04H20/00 , H04L9/00 , H04L9/08 , H04N7/16 , H04N7/167 , H04N21/258 , H04N21/266
CPC分类号： H04N7/163 , G11B20/00362 , H04L9/0861 , H04L9/14 , H04L2209/34 , H04L2209/606 , H04N7/1675 , H04N21/2585 , H04N21/26613
摘要： A system for protecting content on recordable media for, e.g., DVD audio disks, flash memory media, or other media includes providing a media key block (MKB) on each media, with each MKB including 25,000 encryptions of a media key by 25,000 or so device keys. Each authorized player in the system has a single device key from among the system device keys with which to decrypt the media key. To avoid a coincidence attack in which a hacker can learn the MKB and associated media key and then guess at a device key without knowing its position in the MKB, the media key is XORed with a number representing each position in the MKB, and only then encrypted with the device key corresponding to that position.
摘要翻译：用于保护例如DVD音频盘，闪存介质或其他媒体的可记录媒体上的内容的系统包括在每个媒体上提供媒体密钥块（MKB），每个MKB包括25,000个媒体密钥的25,000个加密设备密钥。系统中的每个授权的播放器具有用于解密媒体密钥的系统设备密钥中的单个设备密钥。为了避免黑客可以学习MKB和相关媒体密钥的巧合攻击，然后在不知道其在MKB中的位置的情况下猜测设备密钥，则将媒体密钥与表示MKB中每个位置的数字进行异或，用与该位置对应的设备密钥加密。

28. 发明授权

US08571209B2 Recording keys in a broadcast-encryption-based system 有权
标题翻译：在基于广播加密的系统中记录密钥
公开(公告)号：US08571209B2
公开(公告)日：2013-10-29
申请号：US12356067
申请日：2009-01-19
申请人： Thomas Alexander Bellwood , Robert Glenn Deen , Hongxia Jin , Jeffrey Bruce Lotspiech , Sigfredo Ismael Nin , Matthew Francis Rutkowski
发明人： Thomas Alexander Bellwood , Robert Glenn Deen , Hongxia Jin , Jeffrey Bruce Lotspiech , Sigfredo Ismael Nin , Matthew Francis Rutkowski
IPC分类号： H04L9/06
CPC分类号： H04L9/0822 , H04L9/16 , H04L63/06 , H04L2209/60 , H04L2209/606 , H04L2463/062 , H04N7/1675 , H04N21/2541 , H04N21/4334 , H04N21/4408 , H04N21/4627 , H04N21/63345
摘要： Embodiments of the invention relate to obtaining forensic information for an anonymous attack of digital content without variations in a broadcast encryption system. In one embodiment a media device, being configured to record digital content on recordable media, receives digital content, a unified media key block, and a recording key table. The device calculates a set of recording keys from the recording key table using a media key variant from the unified media key block. The device then generates a title key and encrypts by the digital content in the generated title key. The device then encrypts the generated title key in each one of the calculated recording keys, adds a header including the encrypted titles keys to the encrypted digital content, and stores the encrypted digital content with the header on recordable media.
摘要翻译：本发明的实施例涉及获得无广播加密系统中的变化的数字内容的匿名攻击的取证信息。在一个实施例中，被配置为在可记录介质上记录数字内容的媒体设备接收数字内容，统一媒体密钥块和记录密钥表。该设备使用来自统一媒体密钥块的媒体密钥变体从记录密钥表计算一组记录密钥。然后，该设备生成标题密钥，并通过生成的标题密钥中的数字内容进行加密。然后，该设备对所计算的记录密钥中的每一个加密生成的标题密钥，将包括加密的标题密钥的标题添加到加密的数字内容，并将具有标题的加密的数字内容存储在可记录介质上。

29. 发明申请

US20120272068A9 CONTENT DISTRIBUTION WITH RENEWABLE CONTENT PROTECTION 审中-公开
标题翻译：内容分配与可再生内容保护
公开(公告)号：US20120272068A9
公开(公告)日：2012-10-25
申请号：US12713111
申请日：2010-02-25
申请人： Aaron Marking , Kenneth Goeller , Jeffrey Bruce Lotspiech
发明人： Aaron Marking , Kenneth Goeller , Jeffrey Bruce Lotspiech
IPC分类号： G06F12/14 , G06F17/00
CPC分类号： G11B20/00086 , G06F21/10 , G11B20/00115 , G11B20/0021 , G11B20/00246 , G11B20/00362 , G11B20/0042 , G11B20/00427 , G11B20/00442 , G11B20/00731 , G11B20/00746 , G11B20/00855 , G11B20/00869 , G11B20/00927 , H04L9/002 , H04L67/38 , H04L2209/16 , H04L2209/605
摘要： A method of renewing encryption applied to a content file in a playback device comprising determining a specified variant of at least one microcode function to be used in playing back the content file, determining if variants are stored in internal memory on the playback device to determine if the specified variant is included in the stored variants, retrieving the specified variant from a variant storage in a memory located in a media device in communication with the playback device, if the specified variant is not included in the stored variants, and using the specified variant to access the content file. A playback device has at least one memory having a variant storage, the variant storage including at least one variant of a microcode function, and a processor configured to execute instructions to determine at least one specified variant, access the variant storage of at least one memory to acquire the specified variant, and use the specified variant to decrypt a content file downloaded to a media device in communication with the playback device.
摘要翻译：一种更新应用于播放设备中的内容文件的加密方法，包括：确定要用于播放内容文件的至少一个微代码功能的指定变体，确定变体是否存储在播放设备的内部存储器中，以确定是否指定的变体包括在存储的变体中，如果指定的变体不包括在存储的变体中，则从位于与播放设备通信的媒体设备中的存储器中的变体存储器中检索指定的变体，并且使用指定的变体访问内容文件。回放设备具有至少一个具有变体存储器的存储器，该变体存储器包括微代码功能的至少一个变体，以及被配置为执行指令以确定至少一个指定变体的处理器，访问至少一个存储器的变体存储器以获取指定的变体，并使用指定的变体解密下载到与回放设备通信的媒体设备的内容文件。

30. 发明授权

US07971070B2 Read/write media key block 有权
标题翻译：读/写介质键块
公开(公告)号：US07971070B2
公开(公告)日：2011-06-28
申请号：US10905570
申请日：2005-01-11
申请人： Jeffrey Bruce Lotspiech , Scott Frazier Watson
发明人： Jeffrey Bruce Lotspiech , Scott Frazier Watson
IPC分类号： G06F12/14
CPC分类号： G11B20/00086 , G11B20/00362 , G11B20/00427 , G11B20/00528 , H04N5/913 , H04N21/4334 , H04N21/4627 , H04N21/8355 , H04N2005/91364
摘要： A recorder system contains a media key block (MKB) and selectively writes protected content into a recording medium according to the following content protection logic, to combat theft of the protected content: If the medium does not have a MKB, then the recorder writes its stored MKB into the medium and writes protected content into the medium. If the medium has a MKB that is older than the stored MKB in the recorder, then the recorder writes its stored MKB into the medium before re-encrypting and writing protected content into the medium. If the medium has a MKB that is newer than the stored MKB, then the MKB in the medium is used for content protection. The recorder may store the newer MKB in non-volatile memory, effectively updating its previous stored MKB, so the recorder will have the most recently observed MKB for content protection use.
摘要翻译：记录器系统包含媒体密钥块（MKB），并根据以下内容保护逻辑选择性地将受保护内容写入记录介质，以防止受保护内容的盗窃：如果介质没有MKB，则记录器将其写入将MKB存储到介质中，并将受保护的内容写入介质。如果介质的MKB比存储器中存储的MKB更早，则记录器将其存储的MKB写入介质，然后再重新加密并将受保护的内容写入介质。如果介质的MKB比存储的MKB更新，则介质中的MKB用于内容保护。录音机可以将更新的MKB存储在非易失性存储器中，有效地更新其以前存储的MKB，因此录音机将具有最近观察到的MKB以进行内容保护。

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