Hidden security techniques for wireless security devices
First Claim
Patent Images
1. A security apparatus with a hidden security technique, the security apparatus comprising:
- capture circuitry to capture an image and generate a checksum from the image;
a wireless interface coupled to the capture circuitry, the wireless interface configured to;
transmit the image to a monitoring station over a wireless network; and
a power interface coupled to the capture circuitry, the power interface configured to;
supply power to the capture circuitry and transmit the checksum to the monitoring station over a power line network;
wherein, to determine that a replay attack is ongoing, the monitoring station detects a mismatch between a checksum calculated from the image received over the wireless network and the checksum received over the power line network; and
wherein, to determine that a wireless jamming attack is ongoing, the monitoring station detects receipt of the checksum over the power line network in addition to failure to receive the image over the wireless network.
1 Assignment
0 Petitions
Accused Products
Abstract
A security device transmits captured information wirelessly while transmitting checksums for the information via a power line. The security device may be a security camera, a badge reader, or the like.
14 Citations
29 Claims
-
1. A security apparatus with a hidden security technique, the security apparatus comprising:
-
capture circuitry to capture an image and generate a checksum from the image; a wireless interface coupled to the capture circuitry, the wireless interface configured to;
transmit the image to a monitoring station over a wireless network; anda power interface coupled to the capture circuitry, the power interface configured to;
supply power to the capture circuitry and transmit the checksum to the monitoring station over a power line network;wherein, to determine that a replay attack is ongoing, the monitoring station detects a mismatch between a checksum calculated from the image received over the wireless network and the checksum received over the power line network; and wherein, to determine that a wireless jamming attack is ongoing, the monitoring station detects receipt of the checksum over the power line network in addition to failure to receive the image over the wireless network. - View Dependent Claims (2, 3, 4, 5, 6, 26)
-
-
7. A method comprising:
-
capturing an image using capture circuitry; calculating a checksum of the image; transmitting the image to a monitoring station over a wireless network; and transmitting the checksum via a power line, over a power line network to the monitoring station, the checksum for comparison at a receiver with a second checksum calculated from the wirelessly received image; wherein, to determine that a replay attack is ongoing, the monitoring station detects a mismatch between a checksum calculated from the image received over the wireless network and the checksum received over the power line network; and wherein, to determine that a wireless jamming attack is ongoing, the monitoring station detects receipt of the checksum over the power line network in addition to failure to receive the image over the wireless network. - View Dependent Claims (8, 9, 10, 11, 12, 27)
-
-
13. A system comprising:
-
a wired receiver configured to receive a checksum that was transmitted on a power line over a power line network from a security device; a wireless receiver configured to receive an image from the security device wirelessly over a wireless network; and circuitry configured to; determine that a replay attack is ongoing based upon a mismatch between a checksum calculated from the image received over the wireless network and the checksum received over the power line network; and determine that a wireless jamming attack is ongoing based upon receipt of the checksum over the power line network in addition to failure to receive the image over the wireless network. - View Dependent Claims (14, 15, 16, 28)
-
-
17. A system comprising:
-
capture circuitry arranged to capture an image and generate a checksum for the image; an antenna; a wireless interface coupled to the capture circuitry, the wireless interface arranged to transmit the image on the antenna over a wireless network to a monitoring station; and a power interface coupled to the capture circuitry, the power interface arranged to supply power to the capture circuitry and to transmit the checksum on a power line over a power line network, the checksum provided for comparison at a receiver with a second checksum calculated from the wirelessly received image; wherein, to determine that a replay attack is ongoing, the monitoring station detects a mismatch between a checksum calculated from the image transmitted over the wireless network and the checksum transmitted over the power line network; and wherein, to determine that a wireless jamming attack is ongoing, the monitoring station receives the checksum over the power line network in addition to failing to receive the image over the wireless network. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 29)
-
Specification