Output protection levels
    2.
    发明授权
    Output protection levels 有权
    输出保护等级

    公开(公告)号:US08725646B2

    公开(公告)日:2014-05-13

    申请号:US11107014

    申请日:2005-04-15

    IPC分类号: G06F21/00

    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。

    Trusted License Removal in a Content Protection System or the Like
    4.
    发明申请
    Trusted License Removal in a Content Protection System or the Like 有权
    内容保护系统等中的可信许可证删除

    公开(公告)号:US20120036562A1

    公开(公告)日:2012-02-09

    申请号:US13274217

    申请日:2011-10-14

    IPC分类号: G06F21/00 G06F15/16

    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。

    Rendering digital content in a content protection system according to a plurality of chained digital licenses
    5.
    发明授权
    Rendering digital content in a content protection system according to a plurality of chained digital licenses 有权
    根据多个链接的数字许可证在内容保护系统中呈现数字内容

    公开(公告)号:US07568096B2

    公开(公告)日:2009-07-28

    申请号:US10831281

    申请日:2004-04-23

    IPC分类号: H04L9/00

    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。

    Trusted license removal in a content protection system or the like
    6.
    发明授权
    Trusted license removal in a content protection system or the like 有权
    内容保护系统中的信任许可证删除等

    公开(公告)号:US08060923B2

    公开(公告)日:2011-11-15

    申请号:US10831280

    申请日:2004-04-23

    IPC分类号: H04L9/00

    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。

    Licensing content for use on portable device
    8.
    发明授权
    Licensing content for use on portable device 有权
    用于便携式设备的许可内容

    公开(公告)号:US08738536B2

    公开(公告)日:2014-05-27

    申请号:US11108038

    申请日:2005-04-14

    IPC分类号: G06F21/00 G06Q20/00

    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。

    Rights management system for streamed multimedia content
    9.
    发明授权
    Rights management system for streamed multimedia content 有权
    流媒体内容的权限管理系统

    公开(公告)号:US08290874B2

    公开(公告)日:2012-10-16

    申请号:US11113160

    申请日:2005-04-22

    IPC分类号: G06F21/00

    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。

    Method and system for device registration within a digital rights management framework
    10.
    发明授权
    Method and system for device registration within a digital rights management framework 有权
    数字版权管理框架内设备注册的方法和系统

    公开(公告)号:US07620809B2

    公开(公告)日:2009-11-17

    申请号:US11107513

    申请日:2005-04-15

    IPC分类号: H04L9/00

    摘要: A method of registering network devices in a digital rights management system (DRMS) includes receiving a digital certificate transmitted by the network device requesting registration and verifying the validity of the certificate. The DRMS may then send cryptographic information to the applying network device. The network device may be authorized for registration via a user interface to the DRMS. The DRMS may conduct a proximity test to determine of the network device is proximate to the DRMS. If the certificate is validated, authorization is received, and the proximity test indicates that the network device is proximate to the DRMS, the network device may be registered. A registered network device is then authorized to play protected digital content.

    摘要翻译: 在数字版权管理系统(DRMS)中注册网络设备的方法包括:接收网络设备发送的数字证书,请求注册和验证证书的有效性。 然后,DRMS可以向应用网络设备发送加密信息。 可以通过用户界面向DRMS授权网络设备的注册。 DRMS可以进行接近度测试以确定网络设备接近DRMS。 如果证书被验证,则接收到授权,并且接近度测试指示网络设备接近DRMS,可以注册网络设备。 然后,注册的网络设备被授权播放受保护的数字内容。