Nidec Sankyo Corporation

Kazuto Saeki

Shinya Miyazawa

Yohei Shimizu

Toshiro Shiomi

Jo Tanaka

Akihiro Negishi

To provide a mutual authentication system which is not required to erase master key when a slave device is replaced. The storage part stores a temporary key which is key data used temporarily and a master key which is key data used for authentication. The storage part stores the temporary key. The key confirmation unit inquires whether the slave device stores the master key. The key confirmation response unit confirms whether the master key has already been stored in the storage part for an inquiry from the master device and responds. The key introduction unit encrypts the master key by using the temporary key and transmits to the slave device. The key storage unit decrypts the encrypted master key by using the temporary key and stores in the storage part. The main authentication unit and the sub-authentication unit authenticate with each other by using the master key.

Mutual authentication system and mutual authentication method

A card processing system may include a card reader read data recorded in the card or record data to the card; and a host control section to control the card processing system. The card reader may include a card insertion part include an insertion port and a control section. The card insertion part may include a light emitting part. The control section may be connected with the host control section and be configured to perform light emission control which controls an emission color and an emitting method. The host control section may be configured to specify a host-side combination of an emission color and an emitting method and be configured to perform the light emission control. The host control section may previously set a predetermined combination of an emission color and an emitting method based on the host side combination of the emission color and the emitting method.

Card processing system

A card reader for use with a card incorporated with an IC chip may include an insertion port into which the card is inserted; a metal detection mechanism structured to detect an external connection terminal of the IC chip provided in the card; and a tip end detection mechanism structured to detect a tip end in an inserting direction of the card inserted into the insertion port. The metal detection mechanism and the tip end detection mechanism may be disposed so that, when the tip end detection mechanism detects the tip end in the inserting direction of the card inserted into the insertion port in a correct posture, the metal detection mechanism detects the external connection terminal.

Growing community of inventors

Nagano, Japan

Kazuto Saeki