Synchronized X.509 Certificate Issuance with Short-Term Key Rotation
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Solution Overview
Problem
Traditional X.509 digital certificates pose security risks due to long-term private keys that, if stolen, can compromise the entire public key infrastructure, and existing systems lack efficient methods for distributing and managing short-term or one-time-use keys.
Innovation Solution
The method involves generating and managing short-term private key-public key pairs that expire within a year, requesting and storing these pairs with a Certificate Authority (CA), and efficiently distributing them to third parties, including a queueing system for rapid retrieval and replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional long-term private keys are used in X.509 digital certificates, then the system maintains simplicity and compatibility, but security is compromised due to the risk of private key theft over extended periods
Solution Approach 1:
The patent implements dynamic key management by transitioning from static long-term keys to dynamic short-term keys that are automatically rotated. The system generates new key pairs periodically and updates certificates with fresh keys, making the key lifecycle dynamic rather than static. This resolves the security-duration contradiction by ensuring keys have limited operational windows.
Solution Approach 2:
The patent applies periodic action through automated key rotation mechanisms that generate new key pairs at scheduled intervals. The system periodically creates new private-public key pairs, revokes old certificates, and issues new ones, creating a rhythmic cycle of key renewal. This periodic regeneration of cryptographic materials addresses the security risk accumulation over time.
2Reliability
If short-term private key-public key pairs are implemented, then security is enhanced by limiting key exposure time, but system complexity increases due to key management overhead
Solution Approach 1:
The patent implements self-service through automated key management systems that perform key generation, certificate creation, and revocation without extensive manual intervention. The system autonomously tracks key lifecycles, triggers rotation schedules, and manages the complexity of short-term key coordination. This automation reduces the operational burden despite the increased structural complexity.
Solution Approach 2:
The patent creates a universal key management framework that handles multiple functions: key generation, certificate issuance, revocation, and rotation. This multi-functional system consolidates various key management tasks into a unified infrastructure, reducing overall system complexity by eliminating the need for separate mechanisms for each function.
3Reliability
If frequent key rotation is performed, then the risk of private key compromise is reduced, but the time and resources required for key management increase
Solution Approach 1:
The patent applies preliminary action by pre-planning and scheduling key rotation events before they are needed. The system establishes rotation schedules in advance, pre-generates key pairs, and prepares replacement certificates before old keys expire. This proactive approach minimizes reactive management time and ensures smooth transitions without service interruption.
Solution Approach 2:
The patent maintains continuity of useful action by ensuring key rotation occurs seamlessly without disrupting service. The system overlaps key lifecycles so that new keys are ready before old keys expire, maintaining continuous cryptographic protection. This continuous operation eliminates downtime and reduces the total time spent on key management activities.
4Speed
If synchronized certificate issuance to multiple distribution addresses is implemented, then the speed of key distribution is improved, but the complexity of coordinating multiple recipients increases
Solution Approach 1:
The patent merges multiple distribution operations into a single synchronized issuance event. Instead of separately managing certificate distribution to each recipient, the system combines all distribution tasks into one coordinated action triggered simultaneously for all distribution addresses. This consolidation reduces coordination complexity by treating multiple recipients as a unified distribution target.
Data Source
AI summary
A method includes receiving, from a certificate requestor: a request for a public key certificate and a list of a plurality of distribution addresses. The request may include a public key for the certificate requestor. The plurality of distribution addresses may belong to a plurality of third parties. The method further includes verifying an identity of the certificate requestor, and, in response to verifying the identity of the certificate requestor, retrieving a public key from the request for the public key certificate. The method may also include, in response to verifying the identity of the certificate requestor, generating the public key certificate and signing the public key certificate. The public key certificate may include the public key. The method may also include transmitting the signed public key certificate to the certificate requestor and the plurality of distribution addresses.