Authentication of devices in a wireless network
AssigneeNXP B.V.
InventorsHarsh Dhand, Shinivasa Rao
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Abstract
Various aspects are discussed, for example, a method is decsribed for authentication of devices in a wireless network involving NFC (Near Field Communication), wherein a device periodically switches its mode from a read mode, in which it is able to receive authentication data from one or more other devices, to a write mode, in which it sends out authentication data to the one or more other devices, according to a random time slot scheme, the device authenticates itself after having received authentication data from another device during the read mode, and the device switches permanently its mode to the write mode after being authenticated.
Claims20
An apparatus comprising:
- a chip configured and arranged to communicate using near field communication (NFC) and implement a bi-directional authentication process that includes
- a read mode in which the chip operates to
- receive an authentication identification;
- compare the received authentication identification to stored authentication identification on the chip;
- and
- authenticate the apparatus based upon the comparison of the received authentication identification to the stored authentication identification;
- and a write mode in which the chip operates to
- access the stored authentication identification;
- and
- transmit the authentication identification to a second chip operating in the read mode;
- and
- the chip is further configured and arranged to alternate between the read mode and the write mode until the apparatus is authenticated in read mode and thereafter to remain in write mode.
An apparatus comprising:
- a chip configured and arranged to
- communicate using near field communication (NFC),
- implement an authentication protocol that includes an authentication mode in which the chip periodically switches from a read mode, in which it is configured to receive authentication data from a second chip, to a write mode, in which it is configured to send out authentication data to the second chip according to a random time slot scheme, and
- to authenticate itself after having received authentication data from the second chip during the read mode and switch permanently to the write mode after being authenticated.
A system comprising:
- at least two chips configured and arranged to communicate using near field communication (NFC) and implement a bi-directional authentication process that includes
- a read mode in which a chip operates to
- receive an authentication identification from at least a second one of the at least two chips;
- compare the received authentication identification to authentication identification stored on the chip;
- and
- authenticate the chip based upon the comparison of the received authentication identification to the authentication identification stored on the chip;
- and
- a write mode in which the chip operates to
- access stored authentication identification;
- and
- transmit the authentication identification to a chip operating in the read mode;
- and
- the chips are further configured and arranged to alternate between the read mode and the write mode until the chips are authenticated in read mode and thereafter to remain in write mode.
Dependencies are inferred from the claim text.