To provide a portable communication device and portable storage device which are portable electronic equipment equipped with various functions and can send and receive high-safety signals to and from other electronic equipment.

Data read out of a storage part 12 are sent to a ciphering/ deciphering part 20 under the control of a control part 10. The ciphering/ deciphering part 20 generates a cipher key by using the ID characteristic of the other electronic equipment to which signals should be sent and the secret program characteristic of this equipment and ciphers the said data by a cipher key program using this cipher key. The ciphered data are sent to the said opposite electronic equipment through a communication control part 22.