Pre-boot Network Authentication via UEFI Certificate Verification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing authentication systems for electronic devices often require manual input of credentials during the boot process, which can be insecure and vulnerable to software vulnerabilities, and do not account for real-time changes in user authorization or security policies.
Innovation Solution
Implementing network-based authentication using a signed certificate stored in a trusted platform module (TPM), which verifies user identity and authorization in the UEFI environment before booting the operating system, allowing automatic login without user input and enforcing dynamic access control based on up-to-date policies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual credential input is required during boot process, then user authentication can be performed, but security is compromised and vulnerability to software attacks increases
Solution Approach 1:
The system performs authentication in advance during the UEFI boot phase before the operating system loads. Credentials are verified by an authentication server during system initialization, eliminating the need for manual credential input after boot and preventing exposure to OS-level security vulnerabilities.
Solution Approach 2:
An authentication server acts as an intermediary between the UEFI firmware and the operating system. The server verifies credentials during boot and returns authentication tokens that enable automatic login, mediating the security check outside the vulnerable OS environment.
2Reliability
If authentication is performed in the UEFI environment with network verification, then security is enhanced and real-time policy enforcement is achieved, but system complexity increases
Solution Approach 1:
The authentication system serves multiple functions: it verifies user credentials, enforces security policies in real-time, manages certificate validation, and provides automatic login capability. By consolidating these functions into a unified UEFI-based authentication framework, the system achieves enhanced security without proportionally increasing complexity.
Solution Approach 2:
The authentication server provides real-time feedback on credential validity and policy compliance during the boot process. This feedback mechanism enables dynamic access control decisions based on current security policies, user status, and environmental conditions without requiring complex local decision-making logic.
3Adaptability or versatility
If certificate verification is performed remotely via network connection, then up-to-date authorization changes can be enforced, but dependency on network availability increases
Solution Approach 1:
The system performs certificate verification and policy checks in advance during the UEFI boot phase before transferring control to the operating system. This preliminary authentication ensures that network-dependent verification is completed when network availability is most likely and prevents ongoing network dependency during OS operation.
Solution Approach 2:
The system replaces continuous network-based authentication with a one-time UEFI-phase network verification followed by local authentication token validation. This substitution eliminates ongoing network dependency while maintaining dynamic policy enforcement through the initial comprehensive verification.
Data Source
AI summary
Methods, systems, and apparatus, including computer programs encoded on a computer-readable storage medium, for pre-boot network-based authentication. In some implementations, a computing device enters a UEFI environment upon powering on the computing device. While in the UEFI environment, the computing device restricts booting of an operating system of the computing device, accesses a signed certificate corresponding to a particular user, sends a verification request to a server system over a communication network, and receives a verification response from the server system over the communication network. In response to receiving the verification response, the computing device (i) enables the operating system to boot and (ii) verifies the identity of the particular user to the operating system such that the operating system logs in the particular user without requiring further proof of identity for the particular user.