Dynamic Encryption Key Generation Frequency Control

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Solution Overview

Problem

Conventional techniques for generating and sharing application keys in encryption communication networks lack clear guidelines on timing and frequency, making it difficult to efficiently generate and share these keys.

Innovation Solution

A key generating device with a generating unit, communicating units, and a controller that adjusts the frequency of generating and sharing application keys based on communication state information, ensuring efficient key management and distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If application keys are generated independently of the link with fixed timing and frequency, then key generation is simple to implement, but key generation efficiency is low and cannot adapt to varying communication demands

Engineering Contradiction:
Improvekey generation efficiencyVSAvoidkey management complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent implements dynamic key generation by allowing the application layer to request keys based on actual communication needs rather than fixed schedules. The key managing unit adjusts generation timing and frequency according to session states and throughput demands, transforming the static key generation process into a dynamic one that adapts to varying communication requirements.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent employs feedback mechanisms where the application layer provides information about communication state and key usage to the key managing unit. This feedback loop enables the system to adjust key generation frequency and timing based on actual demand, improving efficiency while maintaining manageable complexity through informed decision-making.

Inventive Principle:
Principle #23Feedback

2Reliability

If key generation frequency is increased to meet high throughput demands, then communication reliability is improved, but system resource consumption increases

Engineering Contradiction:
Improveencryption communication reliabilityVSAvoidsystem resource consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent changes the parameter of key generation frequency dynamically based on communication state. Rather than maintaining a constant high generation rate, the system adjusts the frequency parameter according to actual throughput demands and session states, ensuring reliability when needed while conserving resources during low-demand periods.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent applies partial action by generating keys at the minimum necessary frequency to meet communication requirements. Instead of continuously generating keys at maximum frequency, the system generates keys partially - only when and where needed based on actual communication state, reducing unnecessary resource consumption while maintaining reliability.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS9240882B2Key generating device and key generating method
Publication Date: 2016.01.19 KK TOSHIBA
  • US9240882B2 patent drawing
  • US9240882B2 patent drawing
  • US9240882B2 patent drawing

AI summary

According to an embodiment, a key generating device connected to an external device includes a generating unit configured to generate an encryption key; a first communicating unit configured to transmit and receive the encryption key to and from the external device; a storage unit configured to stores therein state information indicating a communication state with respect to an application using the encryption key; and a controller configured to make a control of changing a frequency at which the generating unit generates the encryption key or a frequency at which the first communicating unit transmits and receives the encryption key according to the state information.