Acoustic One-Time Password Authentication System
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Solution Overview
Problem
Conventional authentication systems using one-time passwords face issues with manual input errors and reduced security due to limited data transmission capacity and environmental noise interference when using musical scales for password transmission.
Innovation Solution
An authentication system that employs a portable terminal to generate and transmit one-time passwords as sound waves, using a combination of encryption, encoding, and modulation techniques to ensure high-speed and accurate authentication, leveraging a three-wave carrier technique and error-correcting codes within data frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual input of one-time password is used, then authentication can be performed, but operation becomes annoying and input errors occur
Solution Approach 1:
The patent replaces manual mechanical input (typing/password entry) with acoustic field transmission. The portable terminal speaks the one-time password through a speaker, and the authentication terminal receives it through a microphone, eliminating manual typing operations and associated errors.
Solution Approach 2:
The system enables automatic password transmission without requiring user intervention in the input process. The portable terminal automatically generates and speaks the password, while the authentication terminal automatically captures and processes it, making the system self-serving.
2Ease of operation
If musical scales are used for password transmission, then manual input is eliminated, but data transmission capacity is limited and security is reduced
Solution Approach 1:
The patent changes the parameter representation from musical scale notes (limited to 12 notes per octave) to direct digital audio signals. This allows transmission of full alphanumeric password characters through varied frequency, duration, and pattern of audio tones, significantly increasing data capacity.
Solution Approach 2:
The system transitions from one-dimensional musical scale representation to multi-dimensional audio signal encoding. By using variable frequency, amplitude, duration, and temporal patterns of audio signals, the system can encode much more information than traditional musical scale approaches.
3Ease of operation
If musical scale notes are transmitted, then authentication can be performed, but environmental noise interferes with recognition
Solution Approach 1:
The patent incorporates error correction codes and validation mechanisms before transmission. The system includes checksums, redundant signal transmission, and verification protocols that compensate for potential noise interference before authentication failure can occur.
Solution Approach 2:
The system uses structured audio protocols and signal processing intermediaries that separate the password signal from environmental noise. Through digital signal processing and protocol layering, the authentic signal can be extracted even in noisy environments.
4Loss of time
If small data size passwords are transmitted, then transmission time is reduced, but security is lowered
Solution Approach 1:
The patent enables continuous and efficient transmission of full-length passwords through optimized audio encoding. The system maintains high transmission speed while accommodating complete password strings, eliminating the need to truncate passwords for speed reasons.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables high-speed and high-accuracy one-time password authentication by eliminating manual input errors and enhancing security through sound wave transmission, while minimizing interference from environmental noise.
Implementation Method 1
transmitting the one-time password in the form of sound waves
Implementation Method 2
receiving the sound waves
Data Source
AI summary
An authentication system 1 that uses sound to transmit one-time password(s) may be equipped with portable terminal(s) 10, authentication terminal(s) 30, and authentication server(s) 50. Portable terminal 10 may be equipped with password generating unit(s) 21 which encrypt information including password generation user identifier(s) issued by authentication server(s) 50 and generate one-time password(s), encoding unit(s) 22 which encode one-time password(s) and generate baseband signal(s), carrier wave generating unit(s) 23 which generate carrier wave(s) in audible band(s), modulating unit(s) 25 which use baseband signal(s) to modulate carrier wave(s) and generate modulated signal(s), and speaker(s) 17 which transmit modulated signal(s) in the form of sound wave(s). One-time password(s) may be input as sound wave(s) from portable terminal(s) 10 to authentication terminal(s) 30.