Extending KMIP Credential Type for Pre-Provisioned Device Authentication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing key management server architectures based on a centralized model are incompatible with the Key Management Interoperability Protocol (KMIP) due to pre-provisioning requirements, which limits the ability to manage cryptographic clients effectively, especially in environments where devices have varying encryption methods and lack standardized identity verification.
Innovation Solution
Extending KMIP to include an extended credential type that allows clients to pass device information to the server, enabling the server to deduce and associate pre-provisioned cryptographic materials with specific devices or device groups, thereby facilitating appropriate resource allocation and authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a centralized key management model with pre-provisioning is used, then cryptographic materials can be prepared in advance for devices, but the system becomes incompatible with KMIP's uniform treatment of intelligent cryptographic clients
Solution Approach 1:
The system dynamically determines whether to use pre-provisioned materials or allow client-specified cryptographic information based on the client's capabilities and the request context. The key management server adapts its behavior by checking client support for device type identification and adjusting the provisioning approach accordingly, making the system flexible enough to handle both traditional pre-provisioned devices and modern KMIP-compliant intelligent clients.
2Productivity
If device type identification is implemented to match clients with pre-provisioned materials, then resource allocation improves, but the complexity of client authentication and credential verification increases
Solution Approach 1:
The credential verification process is segmented into distinct steps: first verifying basic client credentials, then checking for device type identification capability, and finally matching with pre-provisioned materials if applicable. This segmentation allows the system to handle simple cases quickly while providing enhanced functionality for clients that support it, without forcing complexity on all clients.
Solution Approach 2:
The extended credential type serves multiple functions: it acts as a basic authentication credential for all clients, and simultaneously provides device type identification information for clients that support it. This multi-functionality reduces the need for separate authentication mechanisms while improving resource allocation for capable clients.
3Adaptability or versatility
If KMIP treats all cryptographic clients uniformly as intelligent entities, then the protocol becomes more versatile, but existing key management servers cannot accommodate devices that require pre-provisioning
Solution Approach 1:
The system performs preliminary checks to determine whether a client supports device type identification before attempting to use pre-provisioned materials. This preliminary action allows the system to maintain KMIP's uniform treatment of clients while providing pre-provisioning support where applicable, by preparing the appropriate response path in advance based on client capabilities.
Data Source
AI summary
A key management protocol (such as KMIP) is extended to provide an extended credential type to pass information from clients to the server to enable the server to deduce pre-provisioned cryptographic materials for the individual clients. Preferably, KMIP client code communicates device information to a key management server in a value in the headers of KMIP requests that flow to the server. In this manner, KMIP requests are associated with pre-provisioned cryptographic materials for particular devices or device groups.