| 摘要 |
PURPOSE: A portable USB security module, document file register method using the same, and program readable medium thereof are provided to safely register a document file by including an encoding/decoding engine that encodes and decodes a document file. CONSTITUTION: A certifying unit(210) certifies a client terminal which is connected to a portable USB security module device. A storing unit(220) stores a content key. The content key encodes a document file which is received through the client terminal. If a register request of the document file is received from the client terminal, a control unit(230) encodes the document file based on the content key. |
