System for downloading, encrypting based on user biometric data and storing contents data, method and mobile communications terminal used for the same

摘要

The object of the present invention is to provide a contents data utilization system in which the contents data is shared between a plurality of mobile communication terminals (1) while the copyright is protected. When the contents data downloaded via a communication network is stored into an external memory (4) of a mobile communication terminal (1), a cipher key generating unit generates a cipher key, using the fingerprint intrinsic to the user of the terminal. Using the cipher key, a contents data processing unit (13) encodes the downloaded contents data, and stores it into the external memory (4). When the contents data is reproduced, the cipher key generating unit generates a cipher key, using the fingerprint intrinsic to the user of the terminal, and decodes and reproduces the contents data stored in the external memory (4). Thereby, the contents data can be shared between a plurality of mobile communication terminals (1) owned by the user.