Frequency Hopping Initialization Vector Using Physical Quantities
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Solution Overview
Problem
Existing communication security methods in satellite and radio telecommunications rely on time-based initialization vectors, which require accurate time sources, leading to vulnerabilities and quality deterioration when time sources are unreliable or not available, especially in passive frequency-evasion techniques.
Innovation Solution
A method that determines a measurable quantity following an immutable physical law, normalizes and quantifies it, and uses this initialization vector with a cryptographic key to generate frequency hopping sequences for secure communication, eliminating the need for time-based increments and sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If time-based initialization vectors are used for secure communication, then synchronization between transmitter and receiver is achieved, but vulnerability increases when time sources are unreliable or unavailable
Solution Approach 1:
The patent extracts the time dependency from the initialization vector generation process. Instead of using time-based counters that require external time sources, the system uses a measurable physical quantity (such as temperature, pressure, or other environmental parameters) that can be independently measured by both transmitter and receiver. This extraction eliminates the vulnerability to time source failure while maintaining the ability to generate synchronized initialization vectors.
Solution Approach 2:
The patent introduces a measurable physical quantity as an intermediary between the communication parties. This intermediary serves as a common reference that both transmitter and receiver can independently access and use to generate matching initialization vectors, replacing the time source intermediary that causes vulnerability when unavailable or unreliable.
2Ease of operation
If time sources are distributed to stations without local time sources, then communication can proceed, but quality of time acquisition deteriorates
Solution Approach 1:
The patent enables each station to independently measure a physical quantity locally without requiring time distribution from other stations. Each communication party uses its own measurement capabilities to generate initialization vectors, eliminating the need for time acquisition procedures and their associated quality deterioration while maintaining communication continuity.
3Reliability
If active time beacon transmission is used for synchronization, then time information is provided to receivers, but electromagnetic signature increases reducing passive reception capability
Solution Approach 1:
The patent extracts the need for active time beacon transmission by using passively measurable physical quantities. Instead of transmitting time information actively, both parties independently measure the same physical phenomenon and use it to generate matching initialization vectors, eliminating electromagnetic signatures while maintaining synchronization accuracy.
4Productivity
If frequency evasion stages are incremented based on time intervals, then frequency hopping sequence is generated, but dependency on time precision increases network complexity
Solution Approach 1:
The patent replaces the mechanical time-based counting system with a measurement-based system. Instead of incrementing frequency evasion stages based on time intervals requiring precise time synchronization, the system uses measurements of physical quantities that can be independently obtained by each station, reducing network complexity while maintaining frequency hopping productivity.
Data Source
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AI summary
The method involves defining a measurable quantity to be measured at an emitter terminal and a receiver terminal, and normalizing and quantifying the defined quantity. An initialization vector is initialized with the normalized and quantified quantity, and the initialization vector is used with a cryptographic key to randomly generate a set of consecutive frequencies for securing communications between the emitter and receiver terminals. The initialization vector is incremented by a given value after each pseudo-random generation time interval to generate a set of consecutive frequency values.