公开(公告)号：US20050114689A1

公开(公告)日：2005-05-26

申请号：US10945542

申请日：2004-09-20

申请人： Clifford Strom ,  Ian Mercer ,  James Alkove ,  Jeffrey McKune ,  Kevin LaChapelle ,  Michael Parks

发明人： Clifford Strom ,  Ian Mercer ,  James Alkove ,  Jeffrey McKune ,  Kevin LaChapelle ,  Michael Parks

IPC分类号： G06F21/24 ,  G06F21/00 ,  G06Q50/00 ,  H04L9/08 ,  H04L9/32 ,  G06F12/14 ,  H04L9/00

CPC分类号： G06F21/10 ,  G06F2221/0797 ,  H04L9/0822 ,  H04L9/0825 ,  H04L2209/605

摘要： A source generates a medium key (KM) and a media secret table including a plurality of entries, each entry including (KM) encrypted by a public key (PU-PD) of a plurality of devices, obtains the medium ID of a medium therefrom, generates a content key (KD) for a piece of content, encrypts the content with (KD) to result in (KD(content)), encrypts (KD) with (KM) to result in (KM(KD)), generates a package for the content including (KD(content)), (KM(KD)), the medium ID, and a signature based on at least the medium ID and verifiable with (KM), and copies the generated package and the media secret table to the medium. Thus, a device with the medium and a private key (PR-PD) corresponding to an entry of the media secret table can access and render the content.

摘要翻译： 源产生包括多个条目的媒体密钥（KM）和媒体秘密表，每个条目包括通过多个设备的公钥（PU-PD）加密的（KM），从而获得介质的介质ID 生成内容的内容密钥（KD），用（KD）加密内容以得到（KD（内容）），用（KM）加密（KD）以生成（KM（KD））生成 用于包含（KD（内容）），（KM（KD）），介质ID以及基于至少介质ID的签名并且可以用（KM）验证的内容的包的包，并复制所生成的包和媒体秘密 表到中等。 因此，具有对应于媒体秘密表的条目的媒体和专用密钥（PR-PD）的设备可以访问和呈现内容。

公开(公告)号：US20060095383A1

公开(公告)日：2006-05-04

申请号：US11266580

申请日：2005-11-03

申请人： Charlie Chase ,  Krishnamurthy Ganesan ,  Philip Lafornara ,  Jeffrey McKune ,  Clifford Strom ,  Vijay Gajjala

发明人： Charlie Chase ,  Krishnamurthy Ganesan ,  Philip Lafornara ,  Jeffrey McKune ,  Clifford Strom ,  Vijay Gajjala

IPC分类号： G06Q99/00

CPC分类号： G06F21/10 ,  G06F2221/0771

摘要： Content revocation is achieved by disabling licenses issued to a computing device for the content. A content revocation is delivered within a license to the computing device. Upon license storage the content revocation is recognized, validated, and stored in a secure state store under the public key of the content server (PU-CS) that issued the content. Each license has a (PU-CS) therein, and each license evaluation considers each content revocation stored in the state store and having the same (PU-CS). The license is disabled or otherwise affected based on the considered content revocation. A content revocation is one form of a license modification that may be delivered within a license.

公开(公告)号：US20060059106A1

公开(公告)日：2006-03-16

申请号：US11266381

申请日：2005-11-03

申请人： Charlie Chase ,  Krishnamurthy Ganesan ,  Philip Lafornara ,  Jeffrey McKune ,  Clifford Strom ,  Vijay Gajjala

发明人： Charlie Chase ,  Krishnamurthy Ganesan ,  Philip Lafornara ,  Jeffrey McKune ,  Clifford Strom ,  Vijay Gajjala

IPC分类号： G06Q99/00

CPC分类号： G06F21/10 ,  G06F2221/0771

摘要： Content revocation is achieved by disabling licenses issued to a computing device for the content. A content revocation is delivered within a license to the computing device. Upon license storage the content revocation is recognized, validated, and stored in a secure state store under the public key of the content server (PU-CS) that issued the content. Each license has a (PU-CS) therein, and each license evaluation considers each content revocation stored in the state store and having the same (PU-CS). The license is disabled or otherwise affected based on the considered content revocation. A content revocation is one form of a license modification that may be delivered within a license.

公开(公告)号：US20060235798A1

公开(公告)日：2006-10-19

申请号：US11107014

申请日：2005-04-15

申请人： James Alkove ,  Clifford Strom ,  Benjamin Cutter ,  Brian Evans

发明人： James Alkove ,  Clifford Strom ,  Benjamin Cutter ,  Brian Evans

IPC分类号： G06Q99/00 ,  H04L9/00 ,  H04K1/00

CPC分类号： G06F21/10 ,  G06F2221/2113

摘要： A system of controlling playback of digital media. A system of controlling playback of digital media comprising a CE device having an output path and a license having a specified output protection level disposed upon the CE device in which the specified output protection level controls playback of the digital media over the output path.

摘要翻译： 控制数字媒体播放的系统。 一种控制数字媒体播放的系统，包括具有输出路径的CE设备和具有指定输出保护级别的许可证的CE设备，该设备设置在CE设备上，其中指定的输出保护级别通过输出路径控制数字媒体的回放。

公开(公告)号：US20060010076A1

公开(公告)日：2006-01-12

申请号：US10830632

申请日：2004-04-23

申请人： Benjamin Cutter ,  Brian Evans ,  Clifford Strom ,  Michael Parks

发明人： Benjamin Cutter ,  Brian Evans ,  Clifford Strom ,  Michael Parks

IPC分类号： H04K1/00

CPC分类号： G06F21/10 ,  G06F2221/2135 ,  G06Q50/06 ,  Y10S707/99945 ,  Y10S707/99948

摘要： Metered data is accumulated and is indexed within a metering database of a client according to a metering ID (MID) and a content-associated ID (KID). The client selects a particular MID and metered data in the metering database having the selected MID, and constructs a challenge based on the selected metered data and sends same to a metering service. The metering service obtains the metered data from the challenge, stores same, and constructs a response. The client receives the response including a list of KIDs of the selected metered data in the challenge, and processes the list of KIDs by, for each KID in the list, deleting the metered data from the metering database having the selected MID and the KID.

摘要翻译： 计量数据被累积并且根据测量ID（MID）和内容相关ID（KID）在客户端的计量数据库内被索引。 客户端在具有所选MID的计量数据库中选择特定的MID和计量数据，并且基于所选择的计量数据构建挑战并将其发送到计费服务。 计量服务从挑战中获取计量数据，存储相同，并构建响应。 客户端接收到包括挑战中选择的计量数据的KID列表的响应，并且通过列表中的每个KID处理KID列表，从具有所选择的MID和KID的计量数据库中删除计量数据。

公开(公告)号：US20050251487A1

公开(公告)日：2005-11-10

申请号：US10831281

申请日：2004-04-23

申请人： Brian Evans ,  Clifford Strom ,  Michael Parks

发明人： Brian Evans ,  Clifford Strom ,  Michael Parks

IPC分类号： G06F21/24 ,  G06F1/00 ,  G06F12/14 ,  G06F21/00 ,  H04L9/00 ,  H04L9/08 ,  H04L9/14 ,  H04L9/32 ,  H04L29/06

CPC分类号： H04L63/10 ,  G06F21/10 ,  H04L63/045 ,  H04L2463/101

摘要： A request to render encrypted content is received and a chain of licenses corresponding to the content is located. The chain includes a leaf license linked to the content at one end of the chain, a root license at the other end of the chain, and any intermediate licenses therebetween. The leaf license and any intermediate licenses in the chain are each bound to the adjoining license in the chain toward the root license, and the root license is bound to an owner of a private key (PR-U). For each license in the chain, the license is verified and it is confirmed that the license allows the content to be rendered. A decryption key is obtained from the leaf license based on application of (PR-U) to the root license, the obtained key is applied to decrypt the encrypted content, and the decrypted content is rendered.

摘要翻译： 接收到呈现加密内容的请求，并且找到与内容相对应的许可证链。 该链包含与链的一端的内容链接的叶授权，链的另一端的根许可证以及它们之间的任何中间许可。 链条中的叶子许可证和任何中间许可证都被绑定到链接中的相邻许可证，并且根许可证被绑定到私钥（PR-U）的所有者。 对于链中的每个许可证，许可证被验证，并且确认许可证允许呈现内容。 从基于（PR-U）应用到根许可证的叶授权获得解密密钥，所获得的密钥被应用于解密加密的内容，并且解密的内容被呈现。

公开(公告)号：US20060265334A9

公开(公告)日：2006-11-23

申请号：US10831280

申请日：2004-04-23

申请人： Benjamin Cutter ,  Brian Evans ,  Clifford Strom ,  Vikas Khandelwal

发明人： Benjamin Cutter ,  Brian Evans ,  Clifford Strom ,  Vikas Khandelwal

IPC分类号： H04L9/00 ,  H04K1/00 ,  G06F17/60

CPC分类号： H04L9/3271 ,  G06F21/105 ,  G06F2221/0797 ,  G06F2221/2103 ,  H04L2209/56 ,  H04L2209/603 ,  H04L2209/605

摘要： A digital license includes an identification of a removal service that can authorize removing such license. A client selects the license to be removed and the service, constructs a challenge including therein a challenge license identification block (LIB) identifying the license to be removed, and sends the challenge to the service. The service receives the challenge, stores at least a portion of the challenge in a database, constructs a response corresponding to the challenge and including therein a response LIB identifying the license to be removed and an identification of the service, and sends the response to the client. The client receives the response, employs the response LIB from the response to identify the license to be removed, and removes the identified license upon confirming that the identification of the service in the identified license matches the identification of the service in the response.

公开(公告)号：US20060239451A1

公开(公告)日：2006-10-26

申请号：US11112325

申请日：2005-04-22

申请人： Brian Evans ,  Clifford Strom ,  Daniel Rosenstein ,  Anand Paka ,  Nicholas Fang ,  Eduardo Oliveira

发明人： Brian Evans ,  Clifford Strom ,  Daniel Rosenstein ,  Anand Paka ,  Nicholas Fang ,  Eduardo Oliveira

IPC分类号： H04L9/00

CPC分类号： G06F21/10 ,  H04N21/26613 ,  H04N21/43615 ,  H04N21/4405 ,  H04N21/4408 ,  H04N21/63345 ,  H04N21/8355

摘要： A sequence of content keys are shared between a receiver of pieces of digital content and a computing device upon which the content is to be rendered. The receiver encrypts each piece of content according to a corresponding content key in the sequence and forwards the encrypted content to the computing device and the computing device decrypts the encrypted content according to the corresponding content key. The receiver initially transmits to the computing device an initialization digital license with an initial content key (CK0) therein. Each of the receiver and the computing device derive a new content key (CKx) in the sequence from the initial content key (CK(0)) in the sequence on an as-needed basis and in a coordinated fashion. The initialization license is required only once for the sequence of content keys, and the receiver need not explicitly communicate (CKx) to the computing device for each piece of content.

摘要翻译： 一系列内容密钥在数字内容片段的接收机和要在其上呈现内容的计算装置之间共享。 接收机根据序列中的对应的内容密钥加密每条内容，并将加密的内容转发到计算设备，并且计算设备根据相应的内容密钥解密加密的内容。 接收机最初向计算设备发送其中具有初始内容密钥（CK 0）的初始化数字许可证。 接收器和计算装置中的每个接收器和计算装置根据需要的基础和以协调的方式从序列中的初始内容密钥（CK（0））中得到新的内容密钥（CKx）。 对于内容密钥的序列，初始化许可证仅需要一次，并且接收器不需要为每个内容显式地通信（CKx）到计算设备。

公开(公告)号：US20060089917A1

公开(公告)日：2006-04-27

申请号：US10971346

申请日：2004-10-22

申请人： Clifford Strom ,  Benjamin Cutter ,  Brian Evans ,  Christopher Fox

发明人： Clifford Strom ,  Benjamin Cutter ,  Brian Evans ,  Christopher Fox

IPC分类号： G06Q99/00 ,  H04L9/00 ,  H04K1/00

CPC分类号： H04L63/08 ,  G06F21/10 ,  H04L63/0428 ,  H04L2463/101

摘要： A method of synchronizing. A method of synchronizing comprising, transferring at least one license of a plurality of licenses from a first PC, populating a license store on a CE device with the at least one license of the plurality of licenses from the first PC, populating a synchronization list with all licenses having state, filtering the synchronization list according to at least one threshold value to create a filtered synchronization list of licenses to be refreshed and refreshing the licenses to be refreshed.

摘要翻译： 一种同步的方法。 一种同步方法，包括：从第一PC传送多个许可证的至少一个许可证，在CE设备上填充许可证存储器与来自第一PC的多个许可证的至少一个许可证，填充同步列表， 所有许可证具有状态，根据至少一个阈值过滤同步列表，以创建要刷新的许可证的过滤同步列表，并刷新要刷新的许可证。

公开(公告)号：US20060242078A1

公开(公告)日：2006-10-26

申请号：US11113160

申请日：2005-04-22

申请人： Brian Evans ,  Clifford Strom ,  Daniel Rosenstein

发明人： Brian Evans ,  Clifford Strom ,  Daniel Rosenstein

IPC分类号： G06F17/60

CPC分类号： G06Q10/06

摘要： A computing device segregates licenses for corresponding content according to relatively short lived licenses for relatively short lived content and relatively long lived licenses for relatively long lived content. The computing device stores the relatively short lived licenses in a more temporary and volatile license store, and the relatively long lived licenses in a more permanent and non-volatile license store. Thus, the relatively short lived licenses are deleted when the temporary license store is turned off and do not create disorder in the permanent license store.

摘要翻译： 计算设备根据相对较短寿命的内容相对较短的许可证和相对较长寿命内容的相对长寿命的许可证，对相应的内容进行许可。 计算设备将相对较短的许可证存储在更临时和易失性的许可证存储中，以及在更永久和非易失性许可证存储中的相对长寿命的许可证。 因此，当临时许可证存储关闭并且不会在永久许可证存储中产生混乱时，相对较短的寿命许可证被删除。