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1. 发明公开

KR1020100014483A 키 제공 시스템, 키 제공 장치, 단말 장치, 키 제공 방법, 및 키 생성 방법 无效
标题翻译：关键提供系统，关键提供设备，终端设备，关键提供方法和关键生成方法
公开(公告)号：KR1020100014483A
公开(公告)日：2010-02-10
申请号：KR1020097019573
申请日：2008-02-04
申请人： 소니 주식회사
发明人： 아사노도모유끼 , 구사까와마사후미
IPC分类号： H04L9/08 , H04W12/04
CPC分类号： H04L9/0822 , H04L9/0836 , H04L9/0861 , H04L2209/60
摘要： A key providing apparatus capable of providing, to a predetermined terminal apparatus, a key for use in encrypting or decrypting data. The key providing apparatus comprises an acquiring part that acquires a directed graph formed such that at least one directed branch connects coordinate points in a coordinate system including a plurality of coordinate points with which subsets representative of combinations of terminal apparatuses are associated; an extracting part that extracts information of all of the directed branches included in a directed path connecting the starting point of the directed graph and a predetermined coordinate point; and a key generating part that generates, based on the directed graph, a key associated with a subset to which a predetermined terminal apparatus belongs. The key providing apparatus provides the information of the directed branches to the predetermined terminal apparatus.
摘要翻译：一种密钥提供装置，能够向预定的终端装置提供用于加密或解密数据的密钥。钥匙提供装置包括：获取部件，其获取形成为使得至少一个有向分支连接坐标系中的坐标点的有向图，所述坐标系包括表示终端装置的组合的子集的多个坐标点; 提取部分，其提取包括在连接有向图的起始点和预定坐标点的有向路径中的所有有向分支的信息; 以及密钥生成部，其基于有向图生成与预定终端装置所属的子集相关联的密钥。密钥提供装置将定向分支的信息提供给预定终端装置。

2. 发明公开

KR1020100014474A 키 제공 시스템, 단말 장치, 및 정보 처리 방법 无效
标题翻译：关键提供系统，终端和信息处理方法
公开(公告)号：KR1020100014474A
公开(公告)日：2010-02-10
申请号：KR1020097019534
申请日：2008-02-05
申请人： 소니 주식회사
发明人： 구사까와마사후미 , 아사노도모유끼
IPC分类号： H04L9/14 , H04W12/04 , H04L29/06
CPC分类号： H04L9/0822 , G06Q20/3829 , H04L9/0836 , H04L9/0861 , H04L2209/60
摘要： A terminal in which a directed graph generating method in a key distribution method of various broadcast encryption systems is improved is provided. The terminal is selected from a plurality of sets representing a combination of a plurality of terminals and comprises an acquisition section for acquiring information on the sets representing part or all of the terminals, an extraction section for extracting any of the sets which are included in the information and to which the terminal itself belongs, and a directed graph generating section for generating only a plurality of directed branches necessary to generate the key corresponding to the extracted set in a predetermined directed graph formed by the directed branches.
摘要翻译：提供一种其中改进了各种广播加密系统的密钥分发方法中的有向图生成方法的终端。从表示多个终端的组合的多个集合中选择终端，并且包括用于获取关于表示部分或全部终端的集合的信息的获取部分，提取部分，用于提取包含在所述终端中的任何集合信息和终端本身所属的信息，以及有向图生成部分，用于仅生成在由所述定向分支形成的预定有向图中生成与所提取的集合相对应的密钥所需的多个定向分支。

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