Application execution apparatus, management method, program

The BD-ROM, the disc root certificate 301 is recorded. The disc root certificate 301, the root certificate distributed from the root certificate authority is one assigned to the disk medium. Application manager 2 acquires the hash value from the disc root certificate 301 to determine the validity of the application by using the hash value. If it is determined that the legitimate, virtual machine 3 executes the application. The local storage 5 has a plurality of domains in the security manager 4, among the plurality of domain region exists in the local storage 5, assigns those corresponding to the acquired hash value to the application.