Qian Wang

US Patent:

20180262230, Sep 13, 2018

Filed:

Mar 8, 2018

Appl. No.:

15/915779

Inventors:

- Stuttgart, DE
Qian Wang - Greenbelt MD, US
Tanvir Arafin - College Park MD, US
Jorge Guajardo Merchan - Pittsburgh PA, US

International Classification:

H04B 1/40
H04L 12/40
H04L 29/06
H04L 9/08

Abstract:

A method for operating at least one node connected to a shared communication medium reduces or eliminates the ability of an adversary node to identify the at least one node based on transient signal characteristics of a signal that the at least one node generates when transmitting a bit through the shared communication medium. The method includes adjusting, with a controller in a first node, an impedance of a variable impedance circuit in the first node to a first impedance level that the controller determines randomly, the variable impedance circuit in the first node being connected to an output of a transceiver in the first node and to a shared communication medium, and transmitting, with the transceiver, a first data bit through the shared communication medium with the variable impedance circuit producing the first impedance level.

US Patent:

20180262526, Sep 13, 2018

Filed:

Mar 8, 2018

Appl. No.:

15/915871

Inventors:

- Stuttgart, DE
Qian Wang - Greenbelt MD, US
Jorge Guajardo Merchan - Pittsburgh PA, US

International Classification:

H04L 29/06
H04L 9/08

Abstract:

A method of operating at least one node in a communication network that uses a shared communication medium has been developed to reduce or eliminate timing side-channel attacks performed by an adversary that is connected to the shared communication medium. The method includes generating, with a controller in a first node, a first jitter time offset randomly generated from within a predetermined time range, and transmitting, with a transceiver in the first node, a first data bit through an output of the transceiver that is connected to a shared communication medium, the first data bit being transmitted at a first time corresponding to the first jitter time offset added to a first predetermined transmission time.

US Patent:

20180262527, Sep 13, 2018

Filed:

Mar 8, 2018

Appl. No.:

15/915933

Inventors:

- Stuttgart, DE
Qian Wang - Greenbelt MD, US
Tanvir Arafin - College Park MD, US
Jorge Guajardo Merchan - Pittsburgh PA, US

International Classification:

H04L 29/06
H04L 9/08

Abstract:

A method of operating at least one node in a communication network that uses a shared communication medium has been developed. The method includes adjusting, with a controller in a first node, a resistance of a first potentiometer in the first node to a first resistance level that the controller in the first node determines randomly, the first potentiometer in the first node being connected to an output of a transceiver in the first node and to a shared communication medium, and transmitting, with the transceiver in the first node, a first data bit through the output that is connected to the shared communication medium with the first potentiometer producing the first resistance level.