Compartmentalized Encryption for Selective Data Protection

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Solution Overview

Problem

Existing data encryption systems lack the capability to encrypt specific portions of a data file, leading to inadequate protection of sensitive information and potential unauthorized access.

Innovation Solution

The Application-Independent Compartmentalized Encryption (A-ICE) system, which allows for single or multiple levels of encryption on existing systems by using an out-of-band encryption component to manage encryption keys marked with privilege categories, enabling selective encryption and decryption of data file portions based on user access rights.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If entire data file is encrypted, then security is improved, but accessibility and usability deteriorate

Engineering Contradiction:
ImprovesecurityVSAvoidaccessibility
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent divides the data file into multiple compartments or sections, each with its own encryption key and access controls. This allows selective encryption of only sensitive portions rather than the entire file, improving accessibility while maintaining security for critical data segments.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different encryption levels and access permissions are applied to different portions of the data file based on their sensitivity. Critical sections receive strong encryption while non-sensitive areas remain easily accessible, creating localized security measures that balance protection and usability.

Inventive Principle:
Principle #3Local quality

2Ease of operation

If selective portion encryption is implemented, then accessibility is improved, but system complexity increases

Engineering Contradiction:
ImproveaccessibilityVSAvoidsystem complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent introduces an intermediary encryption management system that handles key distribution, compartment identification, and access control logic. This mediator layer simplifies the user interface while managing the underlying complexity of selective encryption automatically.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The encryption system is designed to work with multiple file types and applications through a universal interface. The same compartmentalized encryption framework can encrypt different portions of various data formats without requiring application-specific customization, reducing overall system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If application-independent encryption is used, then versatility is improved, but integration complexity increases

Engineering Contradiction:
ImproveversatilityVSAvoidintegration complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent extracts the encryption functionality into a separate, standalone component that can be independently deployed and integrated. This modular encryption module can be added to existing applications without requiring deep integration or modification of the core application logic, reducing integration complexity while maintaining versatility.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS11146388B2System and method for application-independent compartmentalized encryption
Publication Date: 2021.10.12 THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
  • US11146388B2 patent drawing
  • US11146388B2 patent drawing
  • US11146388B2 patent drawing

AI summary

A method of encrypting a data file includes: opening the data file; selecting, via a first user interface, a portion of the data file; encrypting, via an encryption component, the selected portion of the data file as one of a first level of encryption associated with a first authorized user and a second level of encryption associated with a second authorized user so as to create an encrypted data file; and saving the encrypted data file. The encryption component includes an out-of-band encryption key component having stored therein, a first encryption key associated with the first level of encryption and a second encryption key associated with the second level of encryption.