| 摘要 |
<p>PURPOSE: A security system for a self-organizing storage medium and a method thereof divide, distribute and store data through a trilateral negotiation protocol and verify the stored data with a third party having an authority, thereby improving the safety, integrity, and reliability of the data. CONSTITUTION: A user computer (110) divides data into pieces of a certain size, encodes the pieces of data, and creates meta information about the encoding results. Receiving the encoded data from the user computer, a storage server (120) distributes and stores the data in individual servers. A verification server (130) investigates the integrity of the data by comparing the meta information and the stored data in the individual servers and notifies the results to the user computer. The meta information is generated by hashing the secret key-encoded data with hash functions. [Reference numerals] (AA) Trilateral negotiation protocol; (BB) Data owner (user computer); (CC) Storage server; (DD) Verification server; (EE) (1) Data division, (2) Data encoding, Meta information creation, (3) Encoded data transmission to a storage server, (4) Meta information transmission to a verification server, (5) Data integrity verification by the verification server, (6) Verification result notification to a data owner</p> |
