Secure Parameter Transmission via Audio-Visual Signal Encoding
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Solution Overview
Problem
Existing methods for securely transmitting security parameters, such as public keys, between computing devices often require manual verification or a large public key infrastructure, which can be cumbersome and inefficient.
Innovation Solution
A system and method that generates an image or audio signal representing a password, allowing for a key exchange between devices using a password-authenticated key exchange protocol, enabling secure transmission of security parameters without relying on manual verification or extensive infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual verification of security parameters is used, then security is improved, but ease of operation deteriorates
Solution Approach 1:
The patent introduces an intermediary device (such as a camera or display system) that captures and transmits visual representations of security parameters. This intermediary mechanism automates the verification process by allowing users to simply view and confirm displayed information rather than manually comparing complex cryptographic data, thus maintaining security while significantly improving ease of operation.
Solution Approach 2:
The patent replaces manual mechanical verification processes with automated optical and electronic systems. Instead of users manually comparing security parameters, the system uses cameras to capture displays, processes the visual information electronically, and automates the verification workflow, eliminating the cumbersome manual steps while preserving security validation.
2Reliability
If public key infrastructure is used, then security is improved, but device complexity deteriorates
Solution Approach 1:
The patent extracts the core essential function of security parameter transmission from the complex public key infrastructure framework. By focusing only on the fundamental need to securely exchange verification data, the system eliminates unnecessary PKI components such as certificate authorities, complex certificate chains, and extensive key management infrastructure, achieving security through a streamlined approach.
Solution Approach 2:
The patent employs temporary, single-use visual representations of security parameters that are generated, transmitted, and discarded in a single verification event. These ephemeral visual tokens replace the need for maintaining complex, long-term cryptographic infrastructure, providing adequate security for the specific purpose while dramatically reducing device complexity and infrastructure requirements.
3Ease of operation
If visual transmission method is used, then ease of operation is improved, but reliability may deteriorate
Solution Approach 1:
The patent incorporates feedback mechanisms where the receiving device confirms successful capture and verification of the transmitted visual security parameter. This feedback loop allows the transmitting device to verify that the security parameter was correctly received and validated, ensuring reliability while maintaining the ease of visual transmission method.
Data Source
AI summary
Embodiments of the systems, devices, and methods described herein generally facilitate the secure transmittal of security parameters. In accordance with at least one embodiment, a representation of first data comprising a password is generated at the first computing device as an image or audio signal. The image or audio signal is transmitted from the first computing device to the second computing device. The password is determined from the image or audio signal at the second computing device. A key exchange is performed between the first computing device and the second computing device wherein a key is derived at each of the first and second computing devices. In at least one embodiment, one or more security parameters (e.g. one or more public keys) are exchanged between the first and second computing devices, and techniques for securing the exchange of security parameters or authenticating exchanged security parameters are generally disclosed herein.