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    PARTIAL ENCRYPTION TECHNIQUES FOR MEDIA DATA
    1.
    发明公开
    PARTIAL ENCRYPTION TECHNIQUES FOR MEDIA DATA 审中-公开
    TECHNIKEN ZUR PARTIELLENVERSCHLÜSSELUNGFÜRMEDIENDATEN

    公开(公告)号：EP3070937A1

    公开(公告)日：2016-09-21

    申请号：EP16154131.3

    申请日：2006-09-29

    申请人： Apple Inc.

    发明人： GIRISH, Muthya ,  DUVIVIER, Christian ,  LINDAHL, Aram

    IPC分类号： H04N7/167 ,  G11B20/10 ,  G11B20/00 ,  H04N21/2347 ,  H04N21/254 ,  H04N21/41 ,  H04N21/4405 ,  H04N21/835 ,  H04N21/84 ,  H04N21/854

    CPC分类号： H04N7/1675 ,  G11B20/00086 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/0071 ,  G11B20/00855 ,  G11B20/10 ,  H04N21/23476 ,  H04N21/2541 ,  H04N21/4126 ,  H04N21/44055 ,  H04N21/835 ,  H04N21/84 ,  H04N21/85406

    摘要： Improved techniques to partially encrypt media files are disclosed. The encryption serves to cryptographically secure only a portion of the media data within a media file, while the remaining portion of the media data is not cryptographically secured. Although only partial encryption is used, the portion being encrypted serves to substantially disrupt usefulness of other parts of the media file which are not encrypted. In other words, the partial encryption renders the media file substantially unusable by unauthorized users. In one embodiment, the partial encryption is performed by a host device and thereafter the partially encrypted media file is delivered to a client device. The client device, if authorized, can subsequently decrypt the partially encrypted media file and utilize (e.g., play) the media file. However, since the media files are only partially encrypted, the decryption is likewise also only partial, which makes decryption faster and less resource intensive.

    摘要翻译： 公开了改进的部分加密媒体文件的技术。 该加密用于在媒体文件中仅加密地保护媒体数据的一部分，而媒体数据的其余部分未被加密地保护。 虽然仅使用部分加密，但是被加密的部分用于基本上中断未加密的媒体文件的其他部分的有用性。 换句话说，部分加密使得媒体文件基本上不被用户授权。 在一个实施例中，部分加密由主机设备执行，此后将部分加密的媒体文件传送到客户端设备。 客户端设备（如果被授权）可以随后解密部分加密的媒体文件并利用（例如，播放）媒体文件。 然而，由于媒体文件仅被部分加密，所以解密同样也是部分加密的，这使得解密更快，资源更少。

    Information processing apparatus, information recording medium manufacturing apparatus, and information recording medium
    3.
    发明公开
    Information processing apparatus, information recording medium manufacturing apparatus, and information recording medium 审中-公开
    Informationsverarbeitungsvorrichtung，Erstellungsvorrichtungfürein Informationsaufzeichnungsmedium und Informationsaufzeichnungsmedium

    公开(公告)号：EP2723014A2

    公开(公告)日：2014-04-23

    申请号：EP14151463.8

    申请日：2006-11-22

    申请人： Sony Corporation

    发明人： Takashima, Yoshikazu

    IPC分类号： H04L9/08 ,  G11B20/00 ,  G11B20/10

    CPC分类号： G06F21/10 ,  G06F21/60 ,  G06F21/64 ,  G11B20/00086 ,  G11B20/00188 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00253 ,  G11B20/00492 ,  G11B20/10 ,  H04L9/0836 ,  H04L2209/60

    摘要： A configuration is provided for enabling a process in which appropriate content code corresponding to apparatuses and applications of various model types and versions is selected to be performed. In a configuration in which content code recorded on an information recording medium is obtained, and processing, such as a security check in accordance with the content code, conversion of the content data, and embedding of player information into the content, is performed, at least a portion of the content code is set as encrypted data, and as an encryption key therefore, a node key set so as to correspond to a node of a key tree having a hierarchical structure is used. With this configuration, it is possible to specify in advance a player capable of decrypting the encryption part of the content code by using the node key, and only appropriate content code compliant with each player is processed, thereby making it possible to prevent a process of using invalid content code.

    摘要翻译： 提供了一种配置，用于实现其中选择与各种型号类型和版本的装置和应用相对应的适当内容代码的处理。 在获取记录在信息记录介质上的内容代码的配置中，执行诸如内容代码的安全检查，内容数据的转换以及播放器信息的嵌入到内容中的处理，在 将内容代码的至少一部分设置为加密数据，并且作为加密密钥，因此使用与具有层次结构的密钥树的节点相对应的节点密钥集。 利用这种配置，可以预先指定通过使用节点密钥来解密内容码的加密部分的播放器，并且仅处理与每个播放器兼容的合适的内容代码，从而可以防止 使用无效的内容代码。

    Partial Encryption Techniques For Media Data
    7.
    发明公开
    Partial Encryption Techniques For Media Data 有权
    PartielleVerschlüsselungstechnikenfürMediendaten

    公开(公告)号：EP2309744A1

    公开(公告)日：2011-04-13

    申请号：EP10195299.2

    申请日：2006-09-29

    申请人： Apple Inc.

    发明人： Lindahl, Aram ,  Girish, Muthya ,  Duvivier, Christian

    IPC分类号： H04N7/167 ,  H04N7/24

    CPC分类号： H04N7/1675 ,  G11B20/00086 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/0071 ,  G11B20/00855 ,  G11B20/10 ,  H04N21/23476 ,  H04N21/2541 ,  H04N21/4126 ,  H04N21/44055 ,  H04N21/835 ,  H04N21/84 ,  H04N21/85406

    摘要： Improved techniques to partially encrypt media files are disclosed. The encryption serves to cryptographically secure only a portion of the media data within a media file, while the remaining portion of the media data is not cryptographically secured. Although only partial encryption is used, the portion being encrypted serves to substantially disrupt usefulness of other parts of the media file which are not encrypted. In other words, the partial encryption renders the media file substantially unusable by unauthorized users. In one embodiment, the partial encryption is performed by a host device and thereafter the partially encrypted media file is delivered to a client device. The client device, if authorized, can subsequently decrypt the partially encrypted media file and utilize (e.g., play) the media file. However, since the media files are only partially encrypted, the decryption is likewise also only partial, which makes decryption faster and less resource intensive.

    摘要翻译： 公开了改进的部分加密媒体文件的技术。 该加密用于在媒体文件中仅加密地保护媒体数据的一部分，而媒体数据的其余部分未被加密地保护。 虽然仅使用部分加密，但是被加密的部分用于基本上中断未加密的媒体文件的其他部分的有用性。 换句话说，部分加密使得媒体文件基本上不被用户授权。 在一个实施例中，部分加密由主机设备执行，此后将部分加密的媒体文件传送到客户端设备。 客户端设备（如果被授权）可以随后解密部分加密的媒体文件并利用（例如，播放）媒体文件。 然而，由于媒体文件仅被部分加密，所以解密同样也是部分加密的，这使得解密更快，资源更少。

    Content management method and content management apparatus
    8.
    发明公开
    Content management method and content management apparatus 有权
    内容管理方法和内容管理装置

    公开(公告)号：EP2273341A2

    公开(公告)日：2011-01-12

    申请号：EP10182333.4

    申请日：2002-07-02

    申请人： Panasonic Corporation

    发明人： Shimojima, Takashi ,  Sato, Mitsuhiro ,  Noguchi, Naohiko ,  Matsui, Shinichi ,  Inoue, Ryuji ,  Murase, Kaoru ,  Harada, Shunji

    IPC分类号： G06F1/00 ,  G06F12/14 ,  G11B20/10

    CPC分类号： G06Q30/02 ,  G06F21/10 ,  G06F2221/2135 ,  G11B20/00086 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00253 ,  G11B20/00557 ,  G11B20/00746 ,  G11B20/00768

    摘要： With content management apparatus 110 serving as a copy origin and storage medium 120 as a copy target, the copy origin retains allowed copy count control information on content, and when the content is copied from the copy origin to the copy target, the allowed copy count control information retained at the copy origin before copy processing is updated in accordance with a predetermined rule to generate allowed copy count control information to be retained at the copy origin and allowed copy count control information to be retained at the copy target, and subsequent copy processing at the copy origin is done based on the allowed copy count control information retained at the copy origin, whereas subsequent copy processing on the content stored in storage medium 120 is done based on the allowed copy count control information stored in storage medium 120. In this way, it is possible to achieve content management which is easily understandable for users.

    摘要翻译： 在将内容管理装置110用作复制源并将存储介质120作为复制目标的情况下，复制源保留关于内容的允许复制次数控制信息，并且当将内容从复制源复制到复制目标时，允许复制次数 在根据预定规则更新复制处理之前保留在复制原点处的控制信息以产生允许的复制计数控制信息保留在复制原点并且允许的复制计数控制信息保留在复制目标处，并且随后的复制处理 在复制原点基于保存在复制原点的允许复制次数控制信息来完成，而基于存储在存储介质120中的允许复制次数控制信息对存储在存储介质120中的内容进行后续复制处理。在此 方式，可以实现用户容易理解的内容管理。