Cryptographic API Abstraction for Legacy Security Updates

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Solution Overview

Problem

Conventional cryptographic configurations in software applications are hard-coded, making it difficult and costly to adapt to rapidly changing security threats, requiring manual updates and recompilation, and often leading to reduced functionality or shutdowns.

Innovation Solution

A cryptographic adapter intercepts API calls, generating abstracted calls that convey intent rather than specific features, allowing a reconfigurable provider to update independently, maintaining seamless compatibility with legacy applications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If cryptographic configurations are hard-coded in legacy applications, then the applications can maintain stable and simple operations, but the applications cannot adapt quickly to changing security threats

Engineering Contradiction:

Improvecryptographic adaptabilityVSAvoidsystem complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system is segmented into three independent components: the legacy application, the cryptographic adapter, and the cryptographic provider. This segmentation allows the cryptographic provider to be updated independently without modifying the legacy application, thereby improving cryptographic adaptability while maintaining operational simplicity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The cryptographic adapter serves as an intermediary layer between the legacy application and the cryptographic provider. It translates API calls from the legacy application into provider-specific calls, enabling the system to adapt to different cryptographic providers without changing the legacy application code.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If manual updates and recompilation are performed to implement cryptographic changes, then security can be maintained, but significant time and operational overhead are required

Engineering Contradiction:

ImprovesecurityVSAvoidupdate time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The legacy application is pre-configured with abstracted API calls that do not depend on specific cryptographic implementations. This preliminary abstraction allows cryptographic providers to be swapped and updated without requiring recompilation or manual intervention in the legacy application, reducing update time while maintaining security.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If cryptographic features are updated in conventional systems, then security improvements can be implemented, but the systems may require reduced functionality or shutdown

Engineering Contradiction:

ImprovesecurityVSAvoidoperational continuity

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The cryptographic provider is designed as a dynamic, replaceable component that can be updated without shutting down the legacy application. The cryptographic adapter enables seamless switching between different cryptographic providers, allowing security improvements to be implemented while maintaining operational continuity.

Inventive Principle:

Principle #15Dynamics

4Productivity

If legacy applications are decoupled from specific cryptographic implementations, then rapid updates become possible, but the complexity of interfacing and abstraction increases

Engineering Contradiction:

Improveupdate speedVSAvoidabstraction complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The cryptographic adapter implements a universal interface that works with multiple different cryptographic providers. This universality allows the legacy application to interact with any cryptographic provider through a standardized API, simplifying the abstraction layer while enabling rapid updates to cryptographic implementations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12524283B2Cryptographic agility through link layer abstraction

Publication Date: 2026.01.13 VMWARE INC

AI summary

This disclosure relates generally to configuring a legacy application or service with a reconfigurable cryptographic provider capable of leveraging many different cryptographic algorithms, protocols or functions. The application or service can be configured with the reconfigurable cryptographic provider by redirecting cryptographic API calls intended for a linked static shared cryptographic library or provider to a cryptographic adapter configured to emulate responses provided by the linked static shared cryptographic library. A cryptographic adapter is also described and is configured to generate abstracted versions of the cryptographic API calls and pass them on to the reconfigurable cryptographic provider, which selects and implements an appropriate cipher solution based on the abstracted cryptographic API calls.