COMMUNICATION TERMINAL EQUIPMENT AND COMMUNICATION METHOD

PROBLEM TO BE SOLVED: To provide communication terminal equipment and a communication method for quickly executing data communication to be performed by radio. SOLUTION: This communication method for establishing communication between communication terminal equipment which perform radio communication with each other includes: a step for generating a secret key by each terminal equipment; a step for generating a public key from the secret key by each terminal equipment; a step for exchanging the public key between the terminal equipment; a step for generating and displaying confirmation information by using the public key generated by each terminal equipment and the public key acquired from the other party; a step for generating a common key by using the secret key and the public key acquired from the other party by each terminal equipment; a step for generating an encryption key from a common key by each terminal equipment; a step for encrypting one part of the storage data of one terminal equipment by using the encryption key, and for transmitting the data to the other terminal equipment; a step for permitting the execution of the next step by receiving an instruction input; and a step for encrypting the residual storage data of one terminal equipment by using the encryption key, and for transmitting the data to the other terminal equipment. COPYRIGHT: (C)2008,JPO&INPIT