公开(公告)号：WO2008013526A1

公开(公告)日：2008-01-31

申请号：PCT/US2006/028853

申请日：2006-07-25

Applicant: SONY ELECTRONICS, INC. ,  SONY CORPORATION ,  SAEKI, Keiko ,  FUTAGAMI, Motomasa ,  KAWAMOTO, Yoji ,  NAGANO, Motohiko

Inventor： SAEKI, Keiko ,  FUTAGAMI, Motomasa ,  KAWAMOTO, Yoji ,  NAGANO, Motohiko

IPC: G06Q99/00

CPC classification number: H04L63/10 ,  H04L63/0428 ,  H04L2463/101

Abstract: Methods and system of distributing digital content governed by a digital license are provided. The license has identification data for licensed content and is transmitted to a client device. A first and second items of content is transmitted to the client after receipt by the client device. The first and second items of content has first and second identification data respectively different from each other. The portion of the first and second items of content is in encrypted form. The encrypted portion of the first and second items of content is decrypted if the first and second identification data corresponds to the identification data for licensed content. The identification data for licensed content remains unchanged after the license is transmitted to the client.

Abstract translation: 提供数字许可证管理数字内容的方法和系统。 许可证具有许可内容的标识数据，并被传送到客户端设备。 第一和第二项内容在客户端设备接收之后被传送到客户端。 第一和第二项内容具有分别彼此不同的第一和第二识别数据。 第一和第二项内容的部分是加密形式。 如果第一和第二识别数据对应于许可内容的识别数据，则解密第一和第二内容项目的加密部分。 授权内容的识别数据在许可证发送给客户端后保持不变。

公开(公告)号：WO2004093372A3

公开(公告)日：2004-10-28

申请号：PCT/US2004/009638

申请日：2004-03-29

Applicant: SONY ELECTRONICS, INC. ,  CHAVANNE, Pierre ,  HWA, John ,  PAMARTHY, Lakshmana ,  QUINN, Carl ,  HILL, Ralph ,  SWENSON, Eric ,  FUTAGAMI, Motomasa ,  MITUSZAWA, Atsushi

Inventor： CHAVANNE, Pierre ,  HWA, John ,  PAMARTHY, Lakshmana ,  QUINN, Carl ,  HILL, Ralph ,  SWENSON, Eric ,  FUTAGAMI, Motomasa ,  MITUSZAWA, Atsushi

IPC: G06F11/30

Abstract: Protection of digital content (300) using a specific application of block cipher cryptography is described. The digital content (300) is encrypted using an encryption key (82) and a calculated initialization vector (305). The digital content (300) includes a plurality of strides (340, 345, 350, 355) of data and each stride (340, 345, 350, 355) includes a string of data (342, 347, 352, 357) to be encrypted and a block of data (344, 349, 354, 359) to be encrypted. The calculated initialization vector (305) to be used to encrypt the block of data (344, 349, 354, 359) is derived from the string of data (342, 347, 352, 357) in the stride (340, 345, 350, 355) to be encrypted. Furthermore, the initialization vector (305) is calculated by performing an exclusive disjunction function on a seed value (328) and the string of data (342, 347, 352, 357) for each stride (340, 345, 350, 355).

公开(公告)号：WO2006118896A3

公开(公告)日：2006-11-09

申请号：PCT/US2006/015781

申请日：2006-04-25

Applicant: SONY ELECTRONICS INC. ,  SONY CORPORATION ,  SAEKI, Keiko ,  FUTAGAMI, Motomasa ,  ISHIZAKA, Toshihiro

Inventor： SAEKI, Keiko ,  FUTAGAMI, Motomasa ,  ISHIZAKA, Toshihiro

IPC: G06F17/30

Abstract: There are disclosed methods and systems (and related data structures) for processing metadata in files, including media files, so that an alteration or falsification of the metadata can be detected. According to certain embodiments, the metadata includes hash values and digital signatures that were generated by a content server. These hash values and digital signatures can be used by a client device to authenticate the metadata.

公开(公告)号：WO2006118896A2

公开(公告)日：2006-11-09

申请号：PCT/US2006015781

申请日：2006-04-25

Applicant: SONY ELECTRONICS INC ,  SONY CORP ,  SAEKI KEIKO ,  FUTAGAMI MOTOMASA ,  ISHIZAKA TOSHIHIRO

Inventor： SAEKI KEIKO ,  FUTAGAMI MOTOMASA ,  ISHIZAKA TOSHIHIRO

IPC: G06F12/14

CPC classification number: G06F21/64

Abstract: There are disclosed methods and systems (and related data structures) for processing metadata in files, including media files, so that an alteration or falsification of the metadata can be detected. According to certain embodiments, the metadata includes hash values and digital signatures that were generated by a content server. These hash values and digital signatures can be used by a client device to authenticate the metadata.

Abstract translation: 公开了用于处理文件中的元数据（包括媒体文件）的方法和系统（和相关的数据结构），从而可以检测到元数据的改变或伪造。 根据某些实施例，元数据包括由内容服务器生成的散列值和数字签名。 这些哈希值和数字签名可以被客户端设备用来认证元数据。

公开(公告)号：WO2004093372A2

公开(公告)日：2004-10-28

申请号：PCT/US2004009638

申请日：2004-03-29

Applicant: SONY ELECTRONICS INC ,  CHAVANNE PIERRE ,  HWA JOHN ,  PAMARTHY LAKSHMANA ,  QUINN CARL ,  HILL RALPH ,  SWENSON ERIC ,  FUTAGAMI MOTOMASA ,  MITUSZAWA ATSUSHI

Inventor： CHAVANNE PIERRE ,  HWA JOHN ,  PAMARTHY LAKSHMANA ,  QUINN CARL ,  HILL RALPH ,  SWENSON ERIC ,  FUTAGAMI MOTOMASA ,  MITUSZAWA ATSUSHI

IPC: G09C1/00 ,  H04L9/06 ,  H04L9/12 ,  H04L

CPC classification number: H04L9/0637 ,  H04L2209/60

Abstract: Protection of digital content (300) using a specific application of block cipher cryptography is described. The digital content (300) is encrypted using an encryption key (82) and a calculated initialization vector (305). The digital content (300) includes a plurality of strides (340, 345, 350, 355) of data and each stride (340, 345, 350, 355) includes a string of data (342, 347, 352, 357) to be encrypted and a block of data (344, 349, 354, 359) to be encrypted. The calculated initialization vector (305) to be used to encrypt the block of data (344, 349, 354, 359) is derived from the string of data (342, 347, 352, 357) in the stride (340, 345, 350, 355) to be encrypted. Furthermore, the initialization vector (305) is calculated by performing an exclusive disjunction function on a seed value (328) and the string of data (342, 347, 352, 357) for each stride (340, 345, 350, 355).

Abstract translation: 描述使用块密码加密的特定应用保护数字内容（300）。 使用加密密钥（82）和计算的初始化向量（305）对数字内容（300）进行加密。 数字内容（300）包括数据的多个步幅（340,345,350,355），并且每个步幅（340,345,350,355）包括一串数据（342,347,352,357） 加密的数据块（344,349,354,359）被加密。 用于加密数据块（344,349,354,359）的所计算的初始化向量（305）从步幅（340,345,350）中的数据串（342,347,352,357）导出 ，355）进行加密。 此外，通过针对每个步幅（340,345,350,355）对种子值（328）和数据串（342,347,352,357）执行排他性功能来计算初始化向量（305）。