Patent ID: 7627125

Claim:
A terminal manager system for managing communications between a terminal and a key manager system, the terminal having an authority private key from an authority system, the key manager system having the authority public key from the authority system, one of the authority public key and the authority private key encrypting information and the other of the authority public key and the authority private key decrypting the information, the terminal manager system comprising: a terminal handler that receives, from the terminal, terminal information and a terminal public key encrypted with the authority private key, generates an authentication request including at least a portion of the terminal information and the terminal public key encrypted with the authority private key, and generates a key request including at least a portion of the terminal information; and a server that sends the authentication request to the key manager system, sends the key request to the key manager system, receives from the key manager system an authentication response including terminal information and a key manager public key encrypted with the authority public key, and receives from the key manager system a key response including at least a portion of the terminal information and a key generated by the key manager system and encrypted by the key manager system with the terminal public key.