Wireless communication device and wireless communication method
AssigneeKabushiki Kaisha Toshiba
InventorTadahiro Aihara
Life of this patent
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Abstract
A wireless communication device for wirelessly transmitting data from a plurality of data sources to a different device. The wireless communication device includes: an authentication unit that authenticates the different device; an encryption unit that encrypts the data from the data source using a cipher key; a communication unit that transmits the data encrypted by the encryption unit to the different device authenticated by the authentication unit; a switch unit that switches the data source for supplying the data transmitted to the different device; and a cipher key update unit that updates the cipher key used by the encryption unit when the switch unit switches the data source.
Claims14
A wireless communication device for wirelessly transmitting data from a plurality of data sources to a different device, the wireless communication device comprising:
- an authentication unit that authenticates the different device;
- an encryption unit that encrypts the data from the data source using a cipher key;
- a communication unit that transmits the data encrypted by the encryption unit to the different device authenticated by the authentication unit;
- a switch unit that switches the data source for supplying the data transmitted to the different device;
- and
- a cipher key update unit that updates the cipher key used by the encryption unit when the switch unit switches the data source.
A wireless communication device for wirelessly transmitting data, the wireless communication device comprising:
- an authentication unit that authenticates the different device;
- an encryption unit that encrypts the data using a cipher key;
- a communication unit that transmits the data encrypted by the encryption unit to the different device authenticated by the authentication unit;
- a detection unit that detects a signal indicating a change in supplying the data to the different device;
- and
- a cipher key update unit that updates the cipher key used by the encryption unit when the detection unit detects the change of the supply of the data.
A wireless communication method of transmitting data from a plurality of data sources to a different device in a wireless manner, the wireless communication method comprising:
- authenticating the different device;
- encrypting the data from the data source using a cipher key;
- transmitting the data to the different device;
- switching the data source for supplying the data transmitted to the different device;
- and
- updating the cipher key used for encrypting the data when the data source is switched.
Dependencies are inferred from the claim text.