ENCRYPTION SYSTEM AND ENCRYPTION DEVICE

摘要

An encryption device (1) for performing encryption/decryption to terminate security by encryption between personal computers (7 to 9) having encryption software is connected between the personal computer (7 to 9) and terminals (2 to 4) having no encryption software. The encryption device (1), for example, encrypts data received from a DB server (3) before transmitting the data to the personal computer (7) and decrypts the data received from the personal computer (8) before transmitting the data to a network printer (2). Thus, it is possible to use encryption in an enterprise LAN having terminals (2 to 4) in which dedicated encryption software cannot be installed, thereby building a network (10) having little danger of that secret information in the LAN is stolen by an unauthorized intrusion and attack from outside.