发明名称 |
FILE SHARING SYSTEM, SHARED FILE SERVER DEVICE, FILE SHARING METHOD, ACCESS CONTROL METHOD OF SHARED FILE SERVER DEVICE, AND PROGRAMS THEREOF |
摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a file sharing system in which a user can flexibly set a rule for access control to a shared file, and encryption/decryption of file can be made without the user preparing a mechanism for the encryption/decryption nor the user performing a special operation for the encryption/decryption and performing key management. <P>SOLUTION: The system is made up of a shared file server device comprising a shared folder, which has been created by a user using an arbitrary access condition as a folder name beforehand, for setting an access condition to a file by uploading the file, an encryption processing part for making the file into encryption data using an encryption key corresponding to the access condition, and a decryption processing part for decrypting the encryption data to the file using a decryption key corresponding to the encryption key when the attribute information of a user who tries to access the file that has been made into the encryption data satisfies the access condition, a key management server device for creating the encryption key and the decryption key, and an information management server device for storing attribute information of each user. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
申请公布号 |
JP2010244432(A) |
申请公布日期 |
2010.10.28 |
申请号 |
JP20090094325 |
申请日期 |
2009.04.08 |
申请人 |
NIPPON TELEGR & TELEPH CORP <NTT> |
发明人 |
TAKEUCHI ITARU;TAKAHASHI HAJIME;CHIKARA SHIGERU |
分类号 |
G06F21/24;G06F12/00;H04L9/08 |
主分类号 |
G06F21/24 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|