Microservice HSM for Cryptographic Key Management
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Solution Overview
Problem
Current cryptographic systems require a separate Hardware Security Module (HSM) for each application, leading to complex interface logistics, high development costs, and time-consuming maintenance due to frequent changes in market requirements and PCI compliance, as well as cumbersome cryptographic key management.
Innovation Solution
A server system with a microservice core engine and multiple HSMs facilitates cryptographic operations for multiple applications by receiving service requests, generating operation commands, and performing cryptographic operations, thereby eliminating the need for separate HSMs per application and simplifying key management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate HSM is provided for each application, then cryptographic operations can be performed securely, but device complexity and cost increase significantly
Solution Approach 1:
The patent merges multiple HSMs into a single shared HSM that serves multiple applications through a centralized service interface. Instead of each application having its own dedicated HSM, the system consolidates cryptographic operations into a unified platform that manages keys and performs crypto operations for multiple applications securely, thereby reducing device complexity while maintaining security through centralized access control and key management.
Solution Approach 2:
The HSM is designed with universal functionality to serve multiple applications simultaneously. The system provides a standardized service interface that enables any application to request cryptographic operations from the shared HSM. This multi-functional design allows the same HSM to handle different cryptographic operations (encryption, decryption, signing, verification) for multiple applications without requiring separate dedicated HSMs for each.
2Reliability
If a separate HSM is provided for each application, then cryptographic operations are isolated, but interface logic complexity increases
Solution Approach 1:
The patent introduces a centralized service interface as an intermediary layer between applications and the HSM. This service interface acts as a mediator that translates application-specific cryptographic requests into standardized HSM commands. Instead of each application implementing its own complex HSM interface logic, the service interface provides a unified, simplified API that handles the complexity of HSM communication, thereby reducing interface logic complexity while maintaining operational isolation through service-level abstraction.
3Reliability
If HSM changes are made for compliance updates, then security standards are maintained, but development time and cost increase
Solution Approach 1:
The patent consolidates compliance management into the centralized HSM service interface. When PCI or other security standards require updates, the changes are implemented once at the HSM service level rather than requiring separate updates in each application. The service interface maintains backward compatibility while incorporating new compliance requirements, allowing multiple applications to benefit from compliance updates simultaneously without requiring individual application modifications.
4Ease of operation
If cryptographic keys are managed at the application end, then key control is simplified, but security and maintenance burden increase
Solution Approach 1:
The patent introduces a centralized key management service as an intermediary between applications and key storage. Instead of applications managing their own cryptographic keys, the service interface handles key generation, storage, rotation, and distribution. This centralized approach simplifies key management operations for applications while enhancing security through controlled key access, proper key lifecycle management, and centralized audit capabilities. The service interface provides applications with simplified key access interfaces while maintaining robust security controls.
Data Source
AI summary
Embodiments provide methods, and systems for facilitating microservices for cryptographic operations. A method includes receiving, by a server system, a cryptographic service request from at least one application of a plurality of applications over a network communication channel. The cryptographic service request comprises a cryptographic operation to be performed and a cryptographic keys index being an identifier of the at least one application. The method includes generating, by the server system, a cryptographic operation command for the cryptographic operation. The method includes sending, by the server system, the cryptographic operation command to a Hardware Security Module (HSM) communicatively connected to the server system to perform the cryptographic operation. The method includes receiving, by the server system, a response from the HSM for the performed cryptographic operation. The method includes sending, by the server system, the response for the performed cryptographic operation to the at least one application.