Virtual Machine Fork Notification and Cryptographic Secret Regeneration

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Forking a virtual machine can create a security risk by duplicating cryptographic secrets, allowing malicious actors to decrypt encrypted data, as existing solutions do not effectively manage data uniqueness across instances.

Innovation Solution

An application registers to receive fork notifications, allowing it to automatically generate new data, such as a new cryptographic secret, upon detection of a virtual machine fork, ensuring that the original data becomes outdated and no longer poses a threat if compromised.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a virtual machine is forked to create a duplicate instance, then the virtual machine can be modified and tested without altering the original state, but cryptographic secrets are duplicated allowing malicious actors to decrypt encrypted data

Engineering Contradiction:

Improveability to modify and test virtual machineVSAvoidsecurity risk from duplicated cryptographic secrets

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary action by detecting the fork event before it completes, and automatically generating new cryptographic secrets in advance. The supervisory program intercepts the fork notification and triggers secret regeneration before the duplicate virtual machine can use the original secrets, preventing the security vulnerability from taking effect.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback by establishing a monitoring mechanism where the supervisory program receives fork notifications from the virtual machine, processes this information, and automatically triggers the generation of new cryptographic secrets. This closed-loop feedback system ensures that secrets are updated in response to fork events, maintaining security while enabling the fork functionality.

Inventive Principle:

Principle #23Feedback

2Productivity

If cryptographic secrets are copied to the forked virtual machine instance, then the duplicate can perform operations using the same secrets, but the secrets become compromised if the forked instance is accessed by malicious actors

Engineering Contradiction:

Improveefficiency of using same secrets across instancesVSAvoidsecurity of cryptographic secrets

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system changes the parameter of cryptographic secret uniqueness by regenerating secrets with different values for each virtual machine instance. After a fork event, the original instance retains its original secrets while the forked instance receives new, unique secrets, ensuring that each instance has distinct cryptographic credentials and preventing secret sharing vulnerabilities.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If the system automatically generates new data upon fork detection, then data uniqueness is maintained and security is improved, but system complexity increases due to notification handling and data generation mechanisms

Engineering Contradiction:

Improvedata uniqueness and securityVSAvoidcomplexity of fork notification handling system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The supervisory program is designed with multi-functionality, handling fork notifications, detecting fork events, and coordinating secret regeneration within a single integrated component. This universal approach consolidates what could be separate complex subsystems into one coordinated program, reducing overall system complexity while maintaining the reliability of data uniqueness and security.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20240211292A1Automatically generating new data for use by an application in response to a fork of a virtual machine

Publication Date: 2024.06.27 RED HAT INC

AI summary

A system can receive a request, from an application executing in a virtual machine, for registering the application to receive fork notifications. The application can be configured to perform an operation using first data. In response to receiving the request, the system can register the application to receive the fork notifications. Subsequent to registering the application to receive fork notifications, the system can determine that the virtual machine has been forked. In response to determining that the virtual machine has been forked, the system can determine that the application is registered to receive fork notifications. Based on determining that the application is registered to receive fork notifications, the system can transmit a fork notification to the application. The application can be configured to receive the fork notification and responsively obtain second data for use in performing the operation.