Online gift system, an online gift system server system, the terminal device online gift system, online gift server system, terminal, gift how online gift system, online gift methods, and recording a program for executing these methods on a computer computer-readable recording medium

摘要

PROBLEM TO BE SOLVED: To realize presentation while ensuring security. ;SOLUTION: Ciphered presentation contents and their presentation numbers are transferred from a server system 2 to a client 1 or the sender of the present. After that, when a decoding request by using the presentation number is made from a client 4 to be a destination of presentation to the server system 2, a decoding key to decode the ciphered presentation contents is transferred from the server system 2 to the client 4 to be the destination of the presentation.;COPYRIGHT: (C)1999,JPO