公开(公告)号：US20060159266A1

公开(公告)日：2006-07-20

申请号：US11376501

申请日：2006-03-14

申请人： Pierre Chavanne ,  John Hwa ,  Lakshmana Pamarthy ,  Carl Quinn ,  Ralph Hill ,  Eric Swenson ,  Motomasa Futagami ,  Atsushi Mituszawa

发明人： Pierre Chavanne ,  John Hwa ,  Lakshmana Pamarthy ,  Carl Quinn ,  Ralph Hill ,  Eric Swenson ,  Motomasa Futagami ,  Atsushi Mituszawa

IPC分类号： H04L9/00

CPC分类号： H04L9/0637 ,  H04L2209/60

摘要： Protection of digital content using a specific application of block cipher cryptography is described. The digital content is encrypted using an encryption key and a calculated initialization vector. The digital content includes a plurality of strides of data and each stride includes a string of data to be encrypted and a block of data to be encrypted. The calculated initialization vector to be used to encrypt the block of data is derived from the string of data in the stride to be encrypted. Furthermore, the initialization vector is calculated by performing an exclusive disjunction function on a seed value and the string of data for each stride.

公开(公告)号：US07055039B2

公开(公告)日：2006-05-30

申请号：US10675430

申请日：2003-09-29

申请人： Pierre Chavanne ,  John Hwa ,  Lakshmana Pamarthy ,  Carl Quinn ,  Ralph Hill ,  Eric Swenson ,  Motomasa Futagami ,  Atsushi Mituszawa

发明人： Pierre Chavanne ,  John Hwa ,  Lakshmana Pamarthy ,  Carl Quinn ,  Ralph Hill ,  Eric Swenson ,  Motomasa Futagami ,  Atsushi Mituszawa

IPC分类号： H04L9/00 ,  G06F11/30

CPC分类号： H04L9/0637 ,  H04L2209/60

摘要： Protection of digital content using a specific application of block cipher cryptography is described. The digital content is encrypted using an encryption key and a calculated initialization vector. The digital content includes a plurality of strides of data and each stride includes a string of data to be encrypted and a block of data to be encrypted. The calculated initialization vector to be used to encrypt the block of data is derived from the string of data in the stride to be encrypted. Furthermore, the initialization vector is calculated by performing an exclusive disjunction function on a seed value and the string of data for each stride.

摘要翻译： 描述使用块密码加密的特定应用保护数字内容。 数字内容使用加密密钥和计算的初始化向量进行加密。 数字内容包括多个数据段，并且每个步幅包括要加密的数据串和要加密的数据块。 用于加密数据块的计算的初始化向量是从要加密的步幅中的数据串导出的。 此外，通过对种子值进行排他性分离函数和每个步幅的数据串来计算初始化向量。