Method for providing data to a personal portable device via network and a system thereof

Abstract

Disclosed are a method and a system for synchronizing and providing data requiring digital rights protection, to a portable device, wherein a contents providing server is connected with a contents synchronization server to which the portable device is connected.

1 . A method for providing data to a portable device via a network, comprising the steps of:
 maintaining a user information database for recording user authentication information or user contents information, the user authentication information includes at least one among a user identification, a password, and the user's portable device identification, and the portable device identification has unique value;   receiving encrypted contents the data or a predetermined decryption module from a predetermined contents providing server, the decryption module is a module that decrypts the encrypted contents data corresponding to an encryption manner of the contents providing server;   controlling an access to a predetermined decryption module;   decrypting the encrypted contents the data through the accessed decryption module;   receiving user authentication information or contents transmission request information from a predetermined portable device, the contents transmission request information includes predetermined user information and contents information that a user requested;   authenticating a user corresponding to the user authentication information with reference to the user information database;   searching contents detail information corresponding to the contents transmission request information from the user information database;   adding decrypted contents file data corresponding to the contents detail information to the user authentication information and encrypting the adding result;   transmitting the encrypted contents file data to the portable device; and   updating the contents detail information recorded in the user information database corresponding to the transmitted contents the data.