Information processing device, authentication system, authentication device, information processing method, information processing program, recording medium, and integrated circuit

Abstract

The present invention provides an information processing device, an authentication system, etc. that save a server the trouble of updating a database, etc., even when a software module in a client device is updated, and that are capable of verifying whether software modules that have been started in the client device are valid. The terminal device Aholds private keysand, and performs authentication processing with the terminal device Busing the private key. The private keyhas been encrypted such that the private keyis decryptable only when secure boot is completed. The private keyhas been encrypted such that the private keyis decryptable using the private keyonly when the application module X that has been started is valid. When the authentication processing is successful, the terminal device Bverifies that the terminal device Ahas completed secure boot and the application module X that has been started in the terminal device Ais valid. Also, the terminal device Bperforms the authentication processing using the same private key, regardless of whether a program pertaining to the secure boot of the terminal device Ais updated or not.