Legacy Data Access Through Token-Mediated Single Sign-On
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Solution Overview
Problem
Legacy systems often lack modern security measures, making them vulnerable to unauthorized access, especially when integrated with newer technologies, posing a risk to sensitive data, particularly in enterprises handling large quantities of confidential information.
Innovation Solution
A system and method that utilizes a security token service to issue and authenticate tokens, enabling secure access to legacy systems through a single sign-on infrastructure, creating single-use user accounts to prevent data exposure and maintain security without updating the legacy system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If legacy systems are integrated with modern technologies, then access to legacy data is enabled, but security vulnerability increases due to outdated security measures
Solution Approach 1:
An intermediary authentication service is introduced between modern applications and legacy systems. This service issues temporary security tokens that legacy systems can validate without requiring modern security infrastructure, enabling secure access while maintaining the legacy system's original security model.
Solution Approach 2:
The authentication process is segmented into separate components: token issuance by modern authentication services, token transmission through secure channels, and token validation by legacy systems. This segmentation allows each component to operate in its own security context without requiring full integration.
2Reliability
If legacy systems are updated with modern security measures, then security is improved, but cost and complexity increase significantly
Solution Approach 1:
Rather than updating legacy systems, an intermediary authentication service is deployed that bridges modern security requirements with legacy system capabilities. This approach improves security without modifying the legacy system's internal complexity.
Solution Approach 2:
The intermediary authentication service provides universal security functionality that can serve multiple legacy systems with different security requirements, eliminating the need to customize security updates for each individual legacy system.
3Ease of operation
If shared credentials are used for legacy system access, then ease of access is improved, but data exposure risk increases
Solution Approach 1:
Instead of sharing permanent credentials, the system issues short-lived security tokens that are valid only for specific sessions or time periods. These tokens can be revoked or expire automatically, limiting the window for potential data exposure.
Solution Approach 2:
The intermediary service acts as a credential mediator that never exposes actual legacy system credentials to modern applications. It issues opaque tokens that provide access without revealing underlying authentication mechanisms, reducing data exposure risk.
Data Source
AI summary
A method for securely accessing legacy data includes associating a first user account with a security token upon reception of the security token by an enterprise server from a security token service. The security token from the enterprise server is directly communicated to a legacy access provider. The legacy access provider is caused to initiate communication over a network directly with the security token service to request that the security token service authenticate the security token. Access to the legacy system is prevented upon the legacy access provider not verifying authentication of the security token.