System, apparatus, program, and method for authentication

An authentication entity device used in an authentication system comprising a plurality of authentication entity devices which separately execute authentication subprocesses, the authentication subprocess constituting an authentication process, and a verification device which verifies the authentication process executed by the each authentication entity device, the authentication entity device comprising:na confidential information memory module configured to store confidential information for verification by the verification device;an authenticator generating module configured to generate an authenticator corresponding to executed contents of the authentication subprocess, the authenticator being generated using the confidential information;a specific context generating module configured to generate a specific context data, the specific context data including a header block, a data block containing the executed contents of the authentication subprocess, and an authenticator block including the generated authenticator; anda specific context output module configured to output the specific context data.

A verification device which verifies a authentication process executed by each of a plurality of authentication entity devices which separately executes an authentication subprocess constituting the authentication process, the verification device comprising:na context verifying module configured to verify a plurality of contexts using confidential information identical to the confidential information or corresponding confidential information;the plurality of contexts being generated by the plurality of authentication entity devices, wherein each of the plurality of authentication entity devices separately executes an authentication subprocess to generate a specific context for each of the plurality of authentication entity devices; andthe plurality of contexts including execution contents of the authentication subprocess corresponding to a particular authentication entity device, and an authenticator generated for the execution contents using predetermined confidential information stored on the particular authentication entity device.

A client device which transfers communication between a plurality of authentication entity devices and a verification device, the plurality of authentication entity devices separately executing a authentication subprocess constituting an authentication process, the verification device verifying the authentication process executed by the each authentication entity device, the client device comprising:na profile query module configured to transmit a request for profiles to each of the plurality of authentication entity devices, the profiles defining execution environment contents of the authentication subprocess executing on each of the plurality of authentication entity devices;a profile management module configured to store the profiles received from each of the plurality of authentication entity devices; anda control module configured to determine one of the profiles compatible with a client environment of the client device.