Optical Channel Intensity Streaming Encryption via Speckle Patterns
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Solution Overview
Problem
Asymmetric cryptography methods used in communication encryption are vulnerable to quantum computers, necessitating more secure encryption techniques.
Innovation Solution
The implementation of an optical channel intensity streaming (OCIS) encryption method using optical scattering and a one-time pad, where a speckle pattern is used to encrypt data, allowing physical-level encryption that is computationally unbreakable and does not require storage of the encryption key.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If asymmetric cryptography is used for encryption, then computational security is provided, but quantum computers can potentially break the encryption
Solution Approach 1:
The patent replaces computational cryptography (digital/mathematical system) with optical physics-based encryption (physical system). The encryption relies on the physical properties of light scattering and speckle patterns rather than computational complexity, making it immune to quantum computer attacks that target mathematical encryption algorithms.
Solution Approach 2:
The patent changes the fundamental parameter of encryption from computational difficulty to physical optical properties. By using speckle patterns generated through light scattering in optical fibers, the security parameter shifts from mathematical problem hardness to physical measurement and reproduction difficulty, which cannot be solved by computational power alone.
2Reliability
If conventional digital encryption is used, then data security is maintained, but encryption keys must be stored securely
Solution Approach 1:
The patent extracts the encryption key concept from the system entirely. Instead of storing and managing cryptographic keys, the encryption is derived from the physical optical path and scattering properties of the fiber. The speckle pattern itself becomes the encryption mechanism, eliminating the need for separate key storage and management infrastructure.
Solution Approach 2:
The optical fiber communication system itself generates the encryption through its physical scattering properties. The random speckle patterns are naturally produced by the interaction of light with the fiber's internal structure, making the system self-encrypting without requiring external key management systems.
3Reliability
If optical scattering encryption is implemented, then computational unbreakability is achieved, but system complexity increases
Solution Approach 1:
The patent makes the optical fiber serve multiple functions: it acts as both the transmission medium for data and the encryption key generator. The same fiber that carries the optical signal also produces the speckle patterns that provide encryption, eliminating the need for separate encryption hardware and reducing overall system complexity.
Solution Approach 2:
The speckle pattern acts as an intermediary between the transmitted optical signal and the decrypted information. Rather than requiring complex decryption algorithms, the receiver uses the speckle pattern as a physical key to reconstruct the original signal through optical correlation, simplifying the decryption process.
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
This method provides a higher level of secrecy and security for communication systems, as the encryption is physically based and not computationally breakable, and does not require the parties to store the encryption key, enhancing the security level beyond conventional digital encryption.
Implementation Method 1
the electromagnetic radiation, transmitted from the spot and scattered through the first scattering medium and the second scattering medium, forms a first speckle pattern
Implementation Method 2
forms a first speckle pattern comprising one or more first bright speckles at one or more first locations and one or more second dark speckles at one or more second locations
Data Source
AI summary
A communication system including a first detector; a first scattering medium; a second detector; an intensity modulator; a second scattering medium; wherein electromagnetic radiation transmitted from a first spot at the first scattering medium, and scattered by and through the first scattering medium and then the second scattering medium, forms a first speckle pattern detected by the second detector. The intensity modulator outputs a second spot of electromagnetic radiation representing the “ones” in a data stream at locations of the bright speckles (or at locations of the dark speckles to represent the “zeros” in the data stream) so that the electromagnetic radiation, transmitted from the second spot and scattered by and through the second scattering medium and then the first scattering medium, forms one or more second bright or dark speckles on the first detector. The data stream can be constructed from the second bright or dark speckles.