| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an information leakage capable of preventing a system in such a manner that makes encrypted information hard to decrypt against accesses from other computer than that of a regular client, and limits the access from the regular clients to prevent the information from leaking. <P>SOLUTION: The information leakage preventing system comprises a DB 3 for storing data together with the data ID of the data after encrypting the data by different encrypt keys; a key managing server 2 for storing the encrypt keys for encrypting the data in corresponding to the data ID and decrypt keys for decrypting the encrypted data; and a main server 1 for acquiring corresponding decrypt key to the data ID from the managing server 2 and corresponding encrypted data from the DB 3 upon request of data from a client 4 to output the decrypt key and the encrypted data to the client 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
