公开(公告)号：US20110078458A1

公开(公告)日：2011-03-31

申请号：US12885886

申请日：2010-09-20

申请人： Kazuyoshi FURUKAWA ,  Tetsuya IZU ,  Masahiko TAKENAKA ,  Masaya YASUDA

发明人： Kazuyoshi FURUKAWA ,  Tetsuya IZU ,  Masahiko TAKENAKA ,  Masaya YASUDA

IPC分类号： G06F12/14

CPC分类号： G06F21/64

摘要： A contents processing device includes a management data storage unit to store an updater identifier and a private key, an accepting unit to accept a content which is divided into a plurality of blocks, an updating type indicating a type of an updating as to the content, an updated block to be updated of the content, and an updated position, an inserting unit to generate an updated content by inserting the updating block into the updated position of the content, a first hash value calculating unit to calculate a hash value as to the updated block, a signature unit to read out the updater identifier and the private key from the management data storage unit to generate a digital signature using the private key as to updating record information including the updater identifier, the updated position, the hash value as to the updated block, and the updating type.

摘要翻译： 内容处理装置包括：管理数据存储单元，用于存储更新器标识符和私钥;接受单元，接受被划分为多个块的内容;指示关于内容的更新类型的更新类型; 要更新的内容的更新的块和更新的位置，通过将更新块插入到内容的更新位置来生成更新的内容的插入单元，第一哈希值计算单元，用于计算关于内容的哈希值 更新块，签名单元，用于从管理数据存储单元读出更新器标识符和专用密钥，以使用专用密钥生成数字签名，以更新包括更新器标识符，更新位置，散列值的记录信息， 更新的块和更新类型。