Application authentication system, secure device, and terminal device

A secure device connected fixedly or detachably to a terminal device, said secure device comprising:

• a card manager for executing a process of authenticating the terminal device;
• and
• a card application for applying an authenticating process to an access request application stored in the terminal device;
• wherein the card application authenticates the application based on a process that is applied to the application by the terminal device, then confirms that the process of authenticating the terminal by the card manager is completed, and then accepts an access request of the authenticated application.

A terminal device including:

• an application running means;
• and
• an application,
• wherein the application running means calculates digest data of the application to request an access to a secure device after the fitted secure device authenticates the application running means, then authenticates the application by using the digest data, and then issues an access request to the secure device.

An application authentication system comprising:

• a terminal device having no secure information area;
• and
• a secure device connected fixedly or detachably to said terminal device;
• wherein said terminal device includes 1) applications, and 2) application running means for running and authenticating the applications requesting access to the secure device, and
• wherein said secure device authenticates an application stored in the terminal device in order to permit access to said secure device, if the application is authenticated by application running means authenticated by said secure device.