Ntt Docomo, Inc.

Hiroaki Tomoda

Makoto Ito

Yasutaka Urakawa

Motoyuki Uchida

Seiji Hoshi

Takashi Kadohiro

Tadao Takami

A transmitter cell phoneis provided with a controllerfor fulfilling functions of a data encryptor, a first key encryptor, and an encryption file generator. The data encryptor encrypts data, using a first encryption key. The first key encryptor encrypts the first encryption key, using a second encryption key. The encryption file generator generates an encryption file of the data from the data encrypted by the data encryptor, the first encryption key encrypted by the first key encryptor, and user-specific information permitting identification of a user of the mobile communication terminal.

Mobile communication terminal, information processing method, data processing program, and recording medium

An information communication systemaccording to the present invention is comprised of a cellular phonehaving a data storage, a data list transmitter, and a data transmitterand a cellular phonehaving a check list DBand a data receiver. The cellular phonemakes the data list transmittertransmit a data list of content data stored in the data storage, to the cellular phone. The cellular phonecollates the data list with a check list stored in the check list DBto generate a request list, and transmits the request list to the cellular phone. The cellular phoneextracts the content data recorded in the received request list from the data storageand transmits the content data to the cellular phone. The cellular phonereceives the content data through the data receiver

Transmission-side mobile unit, reception-side mobile unit, information communication system, information communication method, and server apparatus

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Kanagawa, Japan

Hiroaki Tomoda