Packet processor verification methods and systems
AssigneeLockheed Martin Corporation
InventorsAlexander Gregory HRYBYK, Kwok Lee Tang, Michael Panczenko
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Abstract
Methods and systems for transmitting and receiving data using audio devices but without being detectable by a human ear are disclosed. For example, a device for transmitting data can include a modulator configured to transform digital data into a modulated signal having a frequency no less than about 20 kHz, and an audio transmitter coupled to an output of the modulator configured to transmit the modulated signal into a sound propagating medium without being detected by a human ear. The methods and systems can be used to perform two-factor authentication for permitting a user to access a remote server or other device.
Claims27
A device for transmitting data, comprising:
- a modulator configured to transform digital data into a modulated signal having a frequency no less than about 20 kHz;
- and
- an audio transmitter coupled to an output of the modulator configured to transmit the modulated signal into a sound propagating medium without being detected by a human ear.
A method for transmitting data, comprising:
- transforming digital data into a modulated signal having a frequency no less than about 20 kHz;
- and
- transmitting the modulated signal into a sound propagating medium without being detected by a human ear.
A device for receiving data, comprising:
- an audio transducer configured to receive a modulated signal from a sound propagating medium, the modulated signal not being detectable in any part by a human ear;
- and
- a demodulator coupled to the audio transducer and configured to demodulated signals having a frequency no less than about 20 kHz into digital data.
A method for receiving data, comprising:
- receiving a modulated signal from a sound propagating medium, the modulated signal not being detectable in any part by a human ear;
- and
- demodulating the modulated signal using a demodulator configured demodulated signals having a frequency no less than about 20 kHz into digital data.
A method for performing authentication between a computer and a remote server, comprising:
- from the computer, forwarding a user-entered password to the remote server via an electronic link;
- from the computer, receiving via an ultrasonic link a secondary authentication message generated by the remote server;
- and
- from the computer, forwarding the secondary authentication message to the remote server to enable the remote server to perform a two-factor authentication.
A system for performing authentication, comprising:
- a computer configured to:
- forward a user-entered password to a remote server via an electronic link,
- receive via an ultrasonic link a secondary authentication message generated by the remote server;
- and
- forward the secondary authentication message to the remote server to enable the remote server to perform a two-factor authentication.
Dependencies are inferred from the claim text.