公开(公告)号：US08385555B2

公开(公告)日：2013-02-26

申请号：US12331633

申请日：2008-12-10

申请人： Lawrence W. Tang ,  Eric E. Berry

发明人： Lawrence W. Tang ,  Eric E. Berry

IPC分类号： H04L29/06

CPC分类号： H04L63/068 ,  H04L9/0822 ,  H04L9/14 ,  H04L2209/60 ,  H04N21/235 ,  H04N21/25808 ,  H04N21/435 ,  H04N21/63345 ,  H04N21/8166 ,  H04N21/835

摘要： A content delivery network and method employing a Downloadable Conditional Access System (“DCAS”) includes first and second personalization servers. A unit key list having unique keys is segmented into different blocks. Each block is encrypted with a separate transmission key corresponding to that block such that first and second blocks are respectively encrypted with first and second transmission keys. The encrypted blocks are communicated to the personalization servers. The first transmission key is communicated to the first personalization server without being communicated to another personalization server such that the first server can decrypt the first block using the first transmission key to access the keys of the first block. The second transmission key is communicated to the second personalization server without being communicated to another personalization server such that the second server can decrypt the second block using the second transmission key to access the keys of the second block.

摘要翻译： 使用可下载条件访问系统（DCAS）的内容传送网络和方法包括第一和第二个性化服务器。 具有唯一密钥的单元密钥列表被分割成不同的块。 每个块用对应于该块的单独传输密钥加密，使得第一和第二块分别用第一和第二传输密钥加密。 将加密的块传送到个性化服务器。 第一传输密钥被传送到第一个性化服务器而不被传送到另一个性化服务器，使得第一服务器可以使用第一传输密钥来解密第一块以访问第一块的密钥。 第二传输密钥被传送到第二个性化服务器而不被传送到另一个性化服务器，使得第二服务器可以使用第二传输密钥来解密第二块以访问第二块的密钥。

公开(公告)号：US20100142712A1

公开(公告)日：2010-06-10

申请号：US12331633

申请日：2008-12-10

申请人： Lawrence W. Tang ,  Eric E. Berry

发明人： Lawrence W. Tang ,  Eric E. Berry

IPC分类号： H04L9/00

CPC分类号： H04L63/068 ,  H04L9/0822 ,  H04L9/14 ,  H04L2209/60 ,  H04N21/235 ,  H04N21/25808 ,  H04N21/435 ,  H04N21/63345 ,  H04N21/8166 ,  H04N21/835

摘要： A content delivery network and method employing a Downloadable Conditional Access System (“DCAS”) includes first and second personalization servers. A unit key list having unique keys is segmented into different blocks. Each block is encrypted with a separate transmission key corresponding to that block such that first and second blocks are respectively encrypted with first and second transmission keys. The encrypted blocks are communicated to the personalization servers. The first transmission key is communicated to the first personalization server without being communicated to another personalization server such that the first server can decrypt the first block using the first transmission key to access the keys of the first block. The second transmission key is communicated to the second personalization server without being communicated to another personalization server such that the second server can decrypt the second block using the second transmission key to access the keys of the second block.

摘要翻译： 使用可下载条件访问系统（“DCAS”）的内容传递网络和方法包括第一和第二个性化服务器。 具有唯一密钥的单元密钥列表被分割成不同的块。 每个块用对应于该块的单独传输密钥加密，使得第一和第二块分别用第一和第二传输密钥加密。 将加密的块传送到个性化服务器。 第一传输密钥被传送到第一个性化服务器而不被传送到另一个性化服务器，使得第一服务器可以使用第一传输密钥来解密第一块以访问第一块的密钥。 第二传输密钥被传送到第二个性化服务器而不被传送到另一个性化服务器，使得第二服务器可以使用第二传输密钥来解密第二块以访问第二块的密钥。