公开(公告)号：US20080168568A1

公开(公告)日：2008-07-10

申请号：US11651339

申请日：2007-01-08

Applicant: Rainer Brodersen ,  Jeffrey Robbin ,  Augustin J. Farrugia ,  Rod Schultz

Inventor： Rainer Brodersen ,  Jeffrey Robbin ,  Augustin J. Farrugia ,  Rod Schultz

IPC: H04L9/12

CPC classification number: H04N7/1675 ,  G06F21/10 ,  H04N21/4126 ,  H04N21/4405 ,  H04N21/63345 ,  H04N21/8355

Abstract: A digital rights management (DRM) system for distribution of digital content such as audio or video uses a token passing scheme to enhance security of the content from unauthorized access and use, including access by unauthorized players. The token is requested from the central content or DRM server by a host device such as a user's computer, using security related information. The token is then passed to a media player associated with the host device, the token being encrypted using a key special to that particular player. Upon receipt of the token, the player transmits back to the server certain related security information confirming receipt of the token and in return receives keys for decryption of the associated digital content. In the absence of proper passing of the token, player access to the content, or further access to other content, is denied. This also allows the player to communicate directly with the server for obtaining the keys.

Abstract translation: 用于分发诸如音频或视频的数字内容的数字版权管理（DRM）系统使用令牌传递方案来增强内容的安全性，以防止未经授权的访问和使用，包括未经授权的玩家的访问。 使用安全相关信息由主机设备（诸如用户的计算机）从中央内容或DRM服务器请求令牌。 令牌然后传递给与主机设备相关联的媒体播放器，该令牌使用该特定播放器专用的密钥进行加密。 在接收到令牌时，播放器向服务器发送确认令牌的接收的某些相关安全信息，并且作为回报接收用于解密相关数字内容的密钥。 在没有正确传递令牌的情况下，播放器访问内容或进一步访问其他内容，被拒绝。 这也允许播放器直接与服务器通信以获得密钥。

公开(公告)号：US07936873B2

公开(公告)日：2011-05-03

申请号：US11800902

申请日：2007-05-07

Applicant: Augustin J. Farrugia ,  Gianpaolo Fasoli ,  Jean-Francois Riendeau ,  Rod Schultz

Inventor： Augustin J. Farrugia ,  Gianpaolo Fasoli ,  Jean-Francois Riendeau ,  Rod Schultz

IPC: H04L9/16

CPC classification number: H04L63/0457 ,  H04L9/14 ,  H04L63/068 ,  H04L2209/603 ,  H04L2463/101

Abstract: For digital rights management (DRM) of e.g. digitally delivered music or video, a technique to make the decryption keys more secure. The technique fragments a message (song or video or other) into a number of portions, and uses a different decryption key for each portion. Each of the various keys is a function of the preceding key, in one version. In another version, each key is a function of a seed value and of the particular portion of the material with which the key is associated.

Abstract translation: 对于例如数字版权管理（DRM） 数字传输的音乐或视频，使解密密钥更安全的技术。 该技术将消息（歌曲或视频或其他）分割成多个部分，并且对于每个部分使用不同的解密密钥。 在一个版本中，各个键中的每一个都是前一个键的功能。 在另一个版本中，每个键是种子值和与键相关联的材料的特定部分的函数。

公开(公告)号：US07975312B2

公开(公告)日：2011-07-05

申请号：US11651339

申请日：2007-01-08

Applicant: Rainer Broderson ,  Jeffrey Robbin ,  Augustin J. Farrugia ,  Rod Schultz

Inventor： Rainer Broderson ,  Jeffrey Robbin ,  Augustin J. Farrugia ,  Rod Schultz

IPC: H04L9/12

CPC classification number: H04N7/1675 ,  G06F21/10 ,  H04N21/4126 ,  H04N21/4405 ,  H04N21/63345 ,  H04N21/8355

Abstract: A digital rights management (DRM) system for distribution of digital content such as audio or video uses a token passing scheme to enhance security of the content from unauthorized access and use, including access by unauthorized players. The token is requested from the central content or DRM server by a host device such as a user's computer, using security related information. The token is then passed to a media player associated with the host device, the token being encrypted using a key special to that particular player. Upon receipt of the token, the player transmits back to the server certain related security information confirming receipt of the token and in return receives keys for decryption of the associated digital content. In the absence of proper passing of the token, player access to the content, or further access to other content, is denied. This also allows the player to communicate directly with the server for obtaining the keys.

Abstract translation: 用于分发诸如音频或视频的数字内容的数字版权管理（DRM）系统使用令牌传递方案来增强内容的安全性，以防止未经授权的访问和使用，包括未经授权的玩家的访问。 使用安全相关信息由主机设备（诸如用户的计算机）从中央内容或DRM服务器请求令牌。 令牌然后传递给与主机设备相关联的媒体播放器，该令牌使用该特定播放器专用的密钥进行加密。 在接收到令牌时，播放器向服务器发送确认令牌的接收的某些相关安全信息，并且作为回报接收用于解密相关数字内容的密钥。 在没有正确传递令牌的情况下，播放器访问内容或进一步访问其他内容，被拒绝。 这也允许播放器直接与服务器通信以获得密钥。

公开(公告)号：US20080279372A1

公开(公告)日：2008-11-13

申请号：US11800902

申请日：2007-05-07

Applicant: Augustin J. Farrugia ,  Gianpaolo Fasoli ,  Jean-Francios Riendeau ,  Rod Schultz

Inventor： Augustin J. Farrugia ,  Gianpaolo Fasoli ,  Jean-Francios Riendeau ,  Rod Schultz

IPC: H04L9/16

CPC classification number: H04L63/0457 ,  H04L9/14 ,  H04L63/068 ,  H04L2209/603 ,  H04L2463/101

Abstract: For digital rights management (DRM) of e.g. digitally delivered music or video, a technique to make the decryption keys more secure. The technique fragments a message (song or video or other) into a number of portions, and uses a different decryption key for each portion. Each of the various keys is a function of the preceding key, in one version. In another version, each key is a function of a seed value and of the particular portion of the material with which the key is associated.

Abstract translation: 对于例如数字版权管理（DRM） 数字传输的音乐或视频，使解密密钥更安全的技术。 该技术将消息（歌曲或视频或其他）分割成多个部分，并且对于每个部分使用不同的解密密钥。 在一个版本中，各个键中的每一个都是前一个键的功能。 在另一个版本中，每个键是种子值和与键相关联的材料的特定部分的函数。