Patent ID: 7464261
Filing Date: 2008-12-09
Classification: G06F

Abstract:
1. A switching device for controlling a connection between at least one private computer, at least one terminal corresponding to the at least one private computer, and a shared computer that can be operated by the at least one terminal, the switching device comprising: a connecting unit that connects in a default position each terminal to a corresponding private computer and switches a connection destination of the terminal to the at least one private computer corresponding to the at least one terminal or the shared computer when a connection switching request transmitted from the at least one terminal has been received; and a security unit that executes, for each terminal, identification processing of data that has been received from any one terminal and output to the at least one private computer or the shared computer, said the identification processing including utilizing a terminal number via which the at least one terminal is connected, the identification processing enciphering a received key code via use of the terminal number as an encryption key, wherein the security unit comprises: wherein the enciphering unit bit shifts the received data to a first direction between a highest bit and a lowest bit by only each terminal number, the first deciphering unit bit shifts an output data to a second direction opposite to the first direction by the terminal number corresponding to the at least one private computer, and the second deciphering unit bit shifts the output data to a second direction opposite to the first direction by the terminal number of a terminal currently connected to the shared computer.