| 摘要 |
According to an embodiment of the present invention, the method comprises: a server dividing data into a plurality of data segments, directly saving some of the data segments as unencrypted data segments, and saving the remaining data segments as encrypted data segments; the server receiving a download request from a terminal for downloading the data, and sending the unencrypted data segments to the terminal; and the server receiving an authentication request sent by the terminal, performing authentication on the terminal, and sending the encrypted data segments to the terminal after authentication has passed. |
