SECURE WIRELESS COMMUNICATIONS SYSTEM AND RELATED METHOD
First Claim
1. A wireless communications system comprising:
- a plurality of wireless communications devices with each comprising a wireless transceiver and a processor coupled thereto for transmitting and receiving communications and using a challenge-response authentication protocol;
said plurality of wireless communications devices comprising a master wireless communications device and at least one slave wireless communications device;
said master wireless communications device transmitting a polling message including an unencrypted portion and an initial encrypted challenge portion;
said at least one slave wireless communications device transmitting a polling reply message including an unencrypted portion and an initial encrypted response portion based upon receiving the polling message from said master wireless communications device.
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Accused Products
Abstract
A wireless communications system may include wireless communications devices with each including a wireless transceiver and a processor coupled thereto for transmitting and receiving communications and using a challenge-response authentication protocol. The wireless communications devices may also include a master wireless communications device and a slave wireless communications device. The master wireless communications device may transmit a polling message including an unencrypted portion and an initial encrypted challenge portion. The slave wireless communications device may transmit a polling reply message including an unencrypted portion and an initial encrypted response portion based upon receiving the polling message from the master wireless communications device.
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Citations
25 Claims
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1. A wireless communications system comprising:
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a plurality of wireless communications devices with each comprising a wireless transceiver and a processor coupled thereto for transmitting and receiving communications and using a challenge-response authentication protocol; said plurality of wireless communications devices comprising a master wireless communications device and at least one slave wireless communications device; said master wireless communications device transmitting a polling message including an unencrypted portion and an initial encrypted challenge portion; said at least one slave wireless communications device transmitting a polling reply message including an unencrypted portion and an initial encrypted response portion based upon receiving the polling message from said master wireless communications device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A master wireless communications device in a wireless communications system including a plurality of wireless communications devices, at least one thereof being a slave wireless communications device, the wireless communications devices transmitting and receiving communications and using a challenge-response authentication protocol, the master wireless communications device comprising:
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a wireless transceiver; and a processor coupled to said wireless transceiver for transmitting a polling message including an unencrypted portion and an initial encrypted challenge portion, receiving a polling reply message from the at least one slave wireless communications device including an unencrypted portion and an initial encrypted response portion based upon receiving the polling message, and thereafter transmitting packets to the at least one slave wireless communications device with each packet comprising a respective different subsequent encrypted challenge portion, and receiving return packets from the at least one slave wireless communications device with each return packet comprising a respective different subsequent encrypted response portion. - View Dependent Claims (13, 14, 15, 16)
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17. A slave wireless communications device in a wireless communications system including a plurality of wireless communications devices, at least one thereof. being a master wireless communications device, the wireless communications devices transmitting and receiving communications and using a challenge-response authentication protocol, the slave wireless communications device comprising:
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a wireless transceiver; and a processor coupled to said wireless transceiver for receiving a polling message from the at least one master wireless communications device including an unencrypted portion and an initial encrypted challenge portion, transmitting a polling reply message including an unencrypted portion and an initial encrypted response portion based upon receiving the polling message, and thereafter receiving packets from the at least one master wireless communications device with each packet comprising a respective different subsequent encrypted challenge portion, and transmitting return packets to the at least one master wireless communications device with each return packet comprising a respective different subsequent encrypted response portion. - View Dependent Claims (18, 19, 20)
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21. A method of operating a wireless communications system comprising a plurality of wireless communications devices for transmitting and receiving communications and using a challenge-response authentication protocol, the wireless communications devices comprising a master wireless communications device and at least one slave wireless communications device, the method comprising:
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transmitting from the master wireless communications device a polling message including an unencrypted portion and an initial encrypted challenge portion; and transmitting from the at least one slave wireless communications device a polling reply message including an unencrypted portion and an initial encrypted response portion based upon receiving the polling message from the master wireless communications device.
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- 22. The method according to claim 22 further comprising upon the master wireless communications device receiving the polling reply message, thereafter transmitting packets to the at least one slave wireless communications device with each packet comprising a respective different subsequent encrypted challenge portion, and transmitting from the at least one slave wireless communications device return packets to the master wireless communications device with each return packet comprising a respective different subsequent encrypted response portion.
Specification