Security device for digital contents and method of using the same

摘要

An improved security device for digital contents and a method for using the security device are provided. The improved security device and method include a transmission and reception unit for transmitting and receiving data necessary for authentication with a mobile device, and for transmitting and receiving contents of the mobile device and a controller for performing authentication with the mobile device, and for decrypting re-encrypted contents from the mobile device when the authentication is successful. The improved method and device provide enhance mobility for users.