CARD SETTLEMENT METHOD USING PORTABLE ELECTRONIC DEVICE HAVING FINGERPRINT SENSOR

摘要

In a card settlement system using a portable electronic device having a fingerprint sensor, a credit card and a portable electronic device (5) having a fingerprint sensor are issued to a person who has made application. To this electronic device (5), card information (12), a storage public key Kp1, and a transmission public key Kp2 are assigned. When registering the electronic device (5) to be usable, a card management device (3) is accessed to identify an individual and when a registration permission signal is received, master fingerprint data (11) can be registered by a fingerprint sensor (51). The fingerprint data entered at this registration is used to create individual encryption keys Ks3, Kp3. Upon card settlement, the fingerprint is checked for authentication. Commodity order information (13) and card information (12) are encrypted by the transmission public key Kp2 and electronically signed by the individual encryption key Ks3. Transaction data (14) having the electronic signature is transmitted to a card management apparatus (3) where the data is decrypted and card settlement is performed.