Optical Camera Encryption Using Multiplexing and Scaling Masks
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Solution Overview
Problem
Existing camera-based technologies are susceptible to data sniffing attacks that compromise sensitive visual data before encryption, as conventional cryptographic methods are ineffective in preventing unauthorized access.
Innovation Solution
An optical encryption camera system that employs a multiplexing mask and a scaling mask to encrypt image data prior to capture, using a sensor array and optical filters to generate a unique encryption key, which can only be decrypted with access to the camera's encryption key.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If software or hardware-based cryptographic methods are applied after image capture, then data security is improved, but the system remains susceptible to data sniffing attacks that gain access to sensitive data prior to encryption
Solution Approach 1:
The patent applies preliminary action by performing encryption before image capture rather than after. The optical encryption camera encrypts visual data at the moment of capture using a multiplexing mask and scaling mask positioned over the sensor array, ensuring that sensitive data is never in plaintext form during storage or transmission, thereby preventing data sniffing attacks entirely
Solution Approach 2:
The patent replaces conventional software-based cryptographic methods with an optical encryption system that uses physical masks (multiplexing mask and scaling mask) positioned over the sensor array. This optical approach encrypts data at the hardware level during capture, providing security that cannot be bypassed by software vulnerabilities or data interception
2Reliability
If conventional cryptographic methods are used, then encryption is achieved, but the key-space is limited and vulnerable to decryption attacks
Solution Approach 1:
The patent extends the encryption key-space by adding spatial dimensions to the traditional cryptographic key. The multiplexing mask and scaling mask introduce spatial frequency domain transformations that create a multi-dimensional encryption space, making brute-force and decryption attacks computationally infeasible while maintaining system simplicity
Data Source
AI summary
An optical encryption camera includes a sensor array and a filter positioned over the sensor array to receive light prior to the sensor array. The filter includes a multiplexing mask and a scaling mask in sequence. The multiplexing mask and the scaling mask combine to provide an encryption key to encrypt image data prior to capture.