Data management system, information processing app

专利名称：Data management system, information

processing apparatus, authentificationmanagement apparatus, method andstorage medium

发明人：Yasuo Fukuda申请号：US09791844申请日：20010226公开号：US06839838B2公开日：20050104

专利附图：

摘要：A data management system for managing data on a network in which a client

device which requests data management transmits encrypted data obtained by

encrypting data by a key for the client device, then a server device receives the encrypteddata and stores multi-encrypted data obtained by encrypting the encrypted data by akey for the server device. The client device and the server device respectively have a keyencrypted by a key for an authentication management device, and the devices candecrypt the key for the client device and the key for the server device and refer to thedecrypted keys by referring to the key for the authentication management device. In thisarrangement, when reference to the key for the authentication management device isdisabled, the key for the server device cannot be referred to, accordingly, the encrypteddata cannot be obtained by decrypting the multi-encrypted data. Further, as the key forthe client device cannot be referred to, the data cannot be obtained by decrypting theencrypted data. Accordingly, the disabled reference to the key for the authenticationmanagement device is equivalent to disposal of the data.

申请人：Yasuo Fukuda

地址：Kanagawa JP

国籍：JP

代理机构：Fitzpatrick, Cella, Harper & Scinto

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