API Gateway Multi-Level Authentication for Payment Networks
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Solution Overview
Problem
Payment networks face challenges in ensuring the security and authenticity of messages transmitted across their systems, particularly in protecting sensitive data and maintaining continuous authentication to prevent unauthorized access.
Innovation Solution
The implementation of a multi-level authentication system where client and computing device certificates are appended to messages, validated through a local repository and a global access manager, generating a security token for access to backend servers, enhancing security by ensuring only recognized devices and clients can access sensitive information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-level authentication with certificate appending is implemented, then security and authenticity of messages is improved, but device complexity and processing overhead increase
Solution Approach 1:
The authentication system is segmented into multiple independent components: client certificate validation, device certificate validation, and security token generation. Each component operates independently but contributes to the overall authentication process, allowing the system to maintain high security while managing complexity through modular architecture.
Solution Approach 2:
Certificates are appended to messages in advance during the message creation process, and validation is performed proactively before granting access to backend services. This preliminary authentication prevents unauthorized access without requiring complex real-time verification mechanisms during critical transaction processing.
2Reliability
If certificate validation is performed at multiple levels, then unauthorized access prevention is improved, but message processing time increases
Solution Approach 1:
The system performs certificate validation and security token generation in advance, before the actual message processing begins. By completing the authentication checks preliminarily, the system ensures that only authorized messages proceed to processing, thereby preventing unauthorized access without significantly delaying legitimate message handling.
Solution Approach 2:
A security token acts as an intermediary credential that bridges the gap between certificate validation and message processing. Once certificates are validated, the generated security token serves as a streamlined proof of authentication, allowing subsequent message processing to proceed efficiently without repeatedly verifying the original certificates.
3Reliability
If security tokens are generated for authenticated clients, then backend service protection is improved, but system processing overhead increases
Solution Approach 1:
Instead of performing full certificate validation for every backend service request, the system creates a simplified security token copy that represents the authenticated client's credentials. This token can be efficiently verified by backend services without requiring the computationally intensive operations of full certificate chain validation, thus maintaining security while improving processing throughput.
Data Source
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AI summary
Networks and methods for use in authenticating messages, based on the clients and the computing devices, are provided. One exemplary method generally includes performing, by an API gateway, validation of a computing device based on a certificate identifying the computing device as one of the recognized computing devices, via the repository, and performing, by the API gateway, validation of the client based on the client certificate via a global access manager, separate from the repository. The exemplary method further includes causing a security token indicative of the client to be generated, when the computing device and the client are validated, whereby the security token is indicative of the client and permits the message, from the client, to be delivered to one or more backend services.