Credential Management System for Secure Rotation

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Solution Overview

Problem

In cloud computing environments, managing large numbers of security credentials is cumbersome due to the risk of leakage or compromise, and existing methods lack an efficient way to rotate or disable credentials without impacting system availability.

Innovation Solution

A credential management system that temporarily disables suspected compromised credentials by monitoring resource availability, gradually increasing the disablement period until it is determined that the credential can be rotated or permanently disabled without affecting critical systems.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If credentials are disabled to prevent compromise, then security is improved, but system availability deteriorates

Engineering Contradiction:
ImprovesecurityVSAvoidsystem availability
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system performs preliminary actions by gradually increasing disablement periods (e.g., 15 minutes, 1 hour, 24 hours) before permanent disabling. This staged approach allows security verification at each step while minimizing impact on system availability, resolving the contradiction between security and productivity.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms by monitoring system behavior and resource availability during each disablement stage. If anomalies are detected, the credential restoration is triggered, allowing the system to adapt between security enforcement and availability maintenance based on real-time conditions.

Inventive Principle:
Principle #23Feedback

2Reliability

If credentials are rotated frequently to prevent compromise, then security is improved, but operational complexity increases

Engineering Contradiction:
ImprovesecurityVSAvoidoperational complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system performs self-service by automatically monitoring credential usage patterns, identifying compromised credentials, and executing the gradual disablement process without manual intervention. This automation reduces operational complexity while maintaining frequent security rotations.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system changes parameters by dynamically adjusting the disablement duration based on the stage of verification. The time parameter evolves from short intervals (15 minutes) to longer intervals (24 hours), allowing security rotation with adaptive complexity management.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If credentials are disabled for longer periods to ensure security, then security is improved, but impact on system availability worsens

Engineering Contradiction:
ImprovesecurityVSAvoidsystem availability
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system performs preliminary verification actions with progressively longer disablement periods. By testing with 15-minute intervals first, then 1-hour, then 24-hour intervals, the system ensures security is validated at each stage while minimizing the overall impact on system availability before permanent disabling.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system applies partial action by disabling credentials for specific time intervals rather than permanently. This allows security verification without complete long-term disabling, balancing security requirements with system availability needs.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS9544292B2Credential management
Publication Date: 2017.01.10 AMAZON TECH INC
  • US9544292B2 patent drawing
  • US9544292B2 patent drawing
  • US9544292B2 patent drawing

AI summary

A credential management system is described that provides a way to disable and/or rotate credentials, such as when a credential is suspected to have been compromised, while minimizing potential impact to various systems that may depend on such credentials. The credentials may be disabled temporarily at first and the availability of various resources is monitored for changes. If no significant drop of availability in the resources has occurred, the credential may be disabled for a longer period of time. In this manner, the credentials may be disabled and re-enabled for increasingly longer time intervals until it is determined with sufficient confidence/certainty that disabling the credential will not adversely impact critical systems, at which point the credential can be rotated and/or permanently disabled. This process also enables the system to determine which systems are affected by a credential in cases where such information is not known.