System zur gebührenpflichtigen Abgabe von Software

摘要

In order to realize an optimal software distributing form involving a software storing medium distributor and a communication company which provides software by utilizing communication lines, a center device for providing specified software to a user by ciphering it, a relaying device and a user terminal device are provided, and the center and the relaying device are made to carry out ciphering in a mode optimal to the software supply mode.