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。

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：US20060085646A1

公开(公告)日：2006-04-20

申请号：US10968462

申请日：2004-10-18

申请人： Benjamin Cutter ,  Clifford Strom ,  Brian Evans ,  Amit Jain ,  Michael Siu

发明人： Benjamin Cutter ,  Clifford Strom ,  Brian Evans ,  Amit Jain ,  Michael Siu

IPC分类号： H04L9/00

CPC分类号： G06F21/10 ,  H04L9/3265 ,  H04L2209/603

摘要： Generating a device certificate. A method of generating a device certificate comprising forming a template that will generate a device certificate upon the occurrence of a triggering event, filling in an authorization root certificate section of the template; filling in an authorization certificate section of the template, filling in a group certificate section of the template, and forming a device certificate section of the template.

摘要翻译： 生成设备证书。 一种生成设备证书的方法，包括形成在发生触发事件时将生成设备证书的模板，填写模板的授权根证书部分; 填写模板的授权证书部分，填写模板的组合证书部分，并形成模板的设备证书部分。

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：US20060235801A1

公开(公告)日：2006-10-19

申请号：US11108038

申请日：2005-04-14

申请人： Clifford Strom ,  Michael Siu ,  Brian Evans

发明人： Clifford Strom ,  Michael Siu ,  Brian Evans

IPC分类号： H04L9/00

CPC分类号： H04L63/0442 ,  G06F21/10 ,  G06F2221/2129 ,  H04L9/0825 ,  H04L9/083 ,  H04L63/0823 ,  H04L2209/603

摘要： A computing device has encrypted content and a corresponding license having a decryption key for decrypting the content. The license allows the computing device to render the content thereon. The computing device may issue a sub-license based on the license to a portable device. The sub-license allows the portable device to render the content thereon and has the decryption key. The portable device has a digital device certificate including information thereon. The computing device receives from the portable device the device certificate thereof, and determines based on rules in the license and the information on the portable device in the device certificate whether the computing device can issue the sub-license to the portable device. If so, the computing device constructs such sub-license to include the decryption key (KD) and transmits the constructed sub-license to the portable device.

摘要翻译： 计算设备具有加密内容和具有用于解密内容的解密密钥的相应许可证。 许可证允许计算设备在其上呈现内容。 计算设备可以基于许可证向便携式设备发布子许可证。 子许可证允许便携式设备在其上呈现内容并具有解密密钥。 便携式设备具有包括其上的信息的数字设备证书。 计算设备从便携式设备接收其设备证书，并且基于许可证中的规则和设备证书中的便携式设备上的信息来确定计算设备是否可以向便携式设备发布子许可证。 如果是这样，则计算设备构造这样的子许可证以包括解密密钥（KD），并将构造的子许可证发送到便携式设备。

公开(公告)号：US20060235799A1

公开(公告)日：2006-10-19

申请号：US11107709

申请日：2005-04-14

申请人： Brian Evans ,  Clifford Strom ,  Geoffrey Dunbar ,  Richard Prologo

发明人： Brian Evans ,  Clifford Strom ,  Geoffrey Dunbar ,  Richard Prologo

IPC分类号： G06F17/60

CPC分类号： G06F21/10

摘要： A method is provided for a computing device to copy (burn) a playlist of tracks to a portable medium, where each track corresponds to a piece of digital content. At least one of the pieces of content is rights-management (RM) protected and accordingly is burned to the portable medium only in accordance with a corresponding digital license.

摘要翻译： 提供了一种用于计算设备将轨道播放列表复制（刻录）到便携式介质的方法，其中每个轨道对应于一段数字内容。 至少有一件内容是权限管理（RM）受保护的，因此仅根据相应的数字许可证将其烧录到便携式介质。

公开(公告)号：US20060232449A1

公开(公告)日：2006-10-19

申请号：US11108327

申请日：2005-04-18

申请人： Amit Jain ,  Benjamin Cutter ,  Brian Evans ,  Clifford Strom

发明人： Amit Jain ,  Benjamin Cutter ,  Brian Evans ,  Clifford Strom

IPC分类号： H03M7/00

CPC分类号： H04N21/440263 ,  G06F21/10 ,  G11B20/00224 ,  G11B20/0071 ,  G11B20/00731 ,  G11B20/00797 ,  G11B20/0084 ,  H04N21/4126 ,  H04N21/440218 ,  H04N21/4627 ,  H04N21/8355

摘要： Described herein are one or more implementations for transforming (e.g., transcoding) DRM-protected digital media content while retaining associated DRM-information (e.g., a user license its related information).

公开(公告)号：US20060150257A1

公开(公告)日：2006-07-06

申请号：US11364731

申请日：2006-02-27

申请人： Yuen Leung ,  Marcus Peinado ,  Clifford Strom

发明人： Yuen Leung ,  Marcus Peinado ,  Clifford Strom

IPC分类号： H04L9/32 ,  G06Q99/00 ,  G06F17/30 ,  G06F7/04 ,  H04L9/00 ,  G06K9/00 ,  H04K1/00 ,  H03M1/68 ,  H04N7/16

CPC分类号： G06F21/10 ,  H04L63/10 ,  H04N21/41407 ,  H04N21/4405 ,  H04N21/4627

摘要： Digital content is rendered on a device by transferring the content to the device and obtaining a digital license corresponding to the content. A sub-license corresponding to and based on the obtained license is composed and transferred to the device, and the content is rendered on the device only in accordance with the terms of the sub-license. The content is encrypted and decryptable according to a content key, and the sub-license includes the content key encrypted and decryptable according to a secret. The sub-license also includes indexing information identifying the secret to the device. The indexing information in the sub-license is obtained to identify the secret, and the secret is acquired based at least in part on the indexing information. The secret is then applied to the encrypted content key to decrypt and obtain the content key, and the obtained content key is applied to the encrypted content to decrypt and obtain the content. To compose the sub-license and also to render the content, the secret is derived by obtaining a device identifier, acquiring a super-secret, and applying the obtained device identifier and super-secret to a function to derive the secret.

摘要翻译： 通过将内容传送到设备并获得与内容相对应的数字许可证，在设备上呈现数字内容。 对应于并基于所获得的许可证的子许可证被组合并传送到设备，并且仅根据子许可证的条款在设备上呈现内容。 内容根据内容密钥被加密和可解密，并且子许可证包括根据秘密加密和可解密的内容密钥。 子许可证还包括标识设备秘密的索引信息。 获取子许可证中的索引信息以识别秘密，并且至少部分地基于索引信息获取秘密。 然后将秘密应用于加密内容密钥以解密并获得内容密钥，并将获得的内容密钥应用于加密内容以解密并获得内容。 为了构成子许可证并且还提供内容，通过获得设备标识符，获取超级秘密以及将获得的设备标识符和超级秘密应用于导出秘密的功能来导出秘密。

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：US20050240533A1

公开(公告)日：2005-10-27

申请号：US10831280

申请日：2004-04-22

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： G06F11/30 ,  G06F12/14 ,  G06F17/00 ,  G06F19/00 ,  G06F21/00 ,  H04K1/00 ,  H04L9/00 ,  H04L9/32 ,  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.

摘要翻译： 数字许可证包括可以授权删除此类许可证的删除服务的标识。 客户端选择要删除的许可证和服务，在其中构建挑战，其中包括标识要移除的许可证的挑战许可证标识块（LIB），并将该挑战发送给该服务。 服务接收到挑战，将至少一部分挑战存储在数据库中，构建与挑战相对应的响应，并在其中包括标识要删除的许可证的响应LIB和服务的标识，并将响应发送到 客户。 客户端接收响应，从响应中采用响应LIB来识别要删除的许可证，并且在确认所识别的许可证中的服务的标识与响应中的服务的标识匹配时，去除所识别的许可证。