Secure Certificate Distribution via Management Service
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Solution Overview
Problem
Existing protocols for digital certificate installation and management on client devices are not scalable for large organizations, lack uniform support across devices and certificate authorities, and are vulnerable to security threats like replay attacks.
Innovation Solution
A system for securely distributing certificates that includes a management service and certificate authority, using one-time passwords and unique device identifiers to authenticate and validate requests, preventing unauthorized access through secure communication channels and cryptographic algorithms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual certificate installation is used, then security control is improved, but scalability deteriorates
Solution Approach 1:
The system enables client devices to automatically request and receive certificates without manual administrator intervention. The enrollment process is automated through the management service, which handles certificate requests, validation, and distribution automatically, eliminating the need for manual installation while maintaining security through automated validation processes.
Solution Approach 2:
A management service acts as an intermediary between client devices and the certificate authority. This intermediary coordinates the certificate enrollment process, validates device identifiers, and securely distributes certificates, enabling automated scalable certificate management while maintaining security controls that would otherwise require manual intervention.
2Productivity
If automated certificate protocols are used, then scalability is improved, but security deteriorates
Solution Approach 1:
The system performs preliminary validation of device identifiers and enrollment requests before issuing certificates. The management service validates unique device identifiers and one-time passwords before initiating certificate enrollment, preventing unauthorized access and security vulnerabilities before they can occur in the automated process.
Solution Approach 2:
The system uses one-time passwords that are valid for a single enrollment transaction and then become obsolete. These disposable authentication credentials prevent replay attacks and unauthorized reuse, securing the automated certificate distribution process without requiring complex long-term security management.
3Extent of automation
If existing certificate protocols are used, then automation is improved, but adaptability deteriorates
Solution Approach 1:
The management service provides a universal interface for certificate enrollment that works across diverse client devices and certificate authorities. By centralizing the enrollment logic and validation processes in the management service, the system achieves broad compatibility without requiring each device to support specific certificate protocols, enabling automated certificate distribution across heterogeneous environments.
Data Source
AI summary
Disclosed are various examples of securely distributing certificates to client devices. A uniform resource locator (URL) is sent to a client device, wherein the URL represents an address from which the client device can request a user certificate. A certificate for a registration authority is sent to the client device, wherein the certificate comprises a first public key and a first private key. A certificate signing request (CSR) received from the client device at the URL is decrypted, wherein the CSR is encrypted with the first public key. The CSR is validated based at least in part on the URL sent to the client device. The user certificate is then sent to the client device.