公开(公告)号：WO0178298A8

公开(公告)日：2001-12-27

申请号：PCT/JP0102866

申请日：2001-04-02

Applicant: SONY CORP ,  ISHIGURO RYUJI ,  OSAWA YOSHITOMO ,  OISHI TATEO ,  ASANO TOMOYUKI ,  MITSUZAWA ATSUSHI

Inventor： ISHIGURO RYUJI ,  OSAWA YOSHITOMO ,  OISHI TATEO ,  ASANO TOMOYUKI ,  MITSUZAWA ATSUSHI

IPC: G06F12/14 ,  G06F1/00 ,  G06F21/10 ,  G06F21/62 ,  G11B20/00 ,  H04L9/08 ,  H04L9/00 ,  G06F17/60 ,  G11B20/10 ,  G11B20/12

CPC classification number: H04L9/0836 ,  G06F21/10 ,  G06F2221/0753 ,  G06F2221/0771 ,  G06F2221/0797 ,  G06F2221/2107 ,  G06F2221/2109 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00253 ,  G11B20/00536 ,  H04L9/0891 ,  H04L2209/60

Abstract: A content key, an authentication key, program data along with an effective key block (EKB) are transmitted by an encryption key structure of a tree structure. The EKB has a structure in which a device constituting a tree leaf holds a leaf key and a limited node key. A specific effective key block (EKB) is generated and distributed to a group specified by a specific node, thus limiting an updateable device. A device not belonging to a group cannot be decoded, ensuring the distribution security of the key and so forth. Keys or data is distributed by an encryption key structure of tree structure, thereby providing an information processing system and method capable of efficiently and safely distributing data.

Abstract translation: 内容密钥，认证密钥，程序数据以及有效密钥块（EKB）通过树结构的加密密钥结构来发送。 EKB具有构成树叶的设备持有叶密钥和有限节点密钥的结构。 生成特定的有效密钥块（EKB）并将其分发到由特定节点指定的组，从而限制可更新设备。 不属于组的设备不能被解码，确保密钥的分发安全性等等。 密钥或数据通过树结构的加密密钥结构来分发，从而提供能够高效和安全地分发数据的信息处理系统和方法。