| 摘要 |
<p>An authentication system that enhances security of communications by reducing possibility of unauthorized access after a user device is authenticated. In the authentication system (1), a solution used to determine the authenticity of the user device (12) is created in both the user device (12) and an authentication device (11) by using environmental information unique to the user device (12). With such an authentication system (1), impersonation of the user by a third person who does not know the environmental information unique to the user device (12) can be prevented. As a result, security in communications is enhanced.</p> |
