Cross-region Session Credential Re-encryption
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Solution Overview
Problem
Existing session credential systems are vulnerable when used across regions, as they can expose sensitive information and increase security risks due to the sharing of secret keys, leading to potential exploitation by malicious actors.
Innovation Solution
Implementing short-term session credentials that are generated based on long-term credentials and secured with asymmetric or symmetric keys, allowing for secure access to resources across regions without compromising the underlying credentials, and enabling quick invalidation and rotation of credentials for enhanced security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If session credentials with secret keys are used across regions, then access to services and resources is enabled, but security vulnerabilities increase due to exposure of sensitive information
Solution Approach 1:
The patent segments session credentials into region-specific components, where each region has its own session credentials that are valid only within that region. This prevents cross-region exposure of secret keys while maintaining the ability to access services across different regions through localized credential validation.
Solution Approach 2:
The patent introduces a session credential validation mechanism that acts as an intermediary between regions. Instead of directly sharing secret keys across regions, the system uses validated session credentials as intermediaries that prove authorization without exposing underlying secret keys, thereby enabling cross-region access while maintaining security.
2Ease of operation
If session credentials are shared across regions, then role assignment and access control are simplified, but sensitive information exposure increases
Solution Approach 1:
The patent extracts the sensitive secret key component from the session credential validation process across regions. Instead of sharing secret keys between regions for role assignment, the system validates session credentials locally without requiring regions to exchange or store each other's secret keys, thus simplifying role assignment while preventing sensitive information exposure.
Solution Approach 2:
The patent performs preliminary validation of session credentials before cross-region operations. Session credentials are validated and authorized in advance within their originating region, and this pre-validated status is then recognized across regions without requiring the actual secret keys to be shared, thereby simplifying cross-region role assignment while maintaining security.
3Stability of the object's composition
If long-term session credentials are used, then access stability is maintained, but security risk increases due to extended exposure window
Solution Approach 1:
The patent implements periodic session credential validation and rotation. Instead of using long-term static credentials, the system requires periodic re-validation of session credentials, which limits the exposure window for any given credential set. This maintains access stability through consistent validation while improving security by reducing the time window for potential credential compromise.
Solution Approach 2:
The patent transitions from static long-term credentials to dynamic session credentials that are continuously validated and can be revoked. Session credentials have defined lifetimes and can be invalidated at any time, creating a dynamic security model that maintains stable access control while reducing security risks associated with long-term credential exposure.
Data Source
AI summary
A request is obtained for accessing a resource in a different region from a region indicated by a session token included with the request. The session token is re-encrypted using secret information of the second region. The request to access the resource in the different region can be fulfilled using the re-encrypted session token.