Cached Certificate Retrieval for Faster Encrypted Server Connections
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Solution Overview
Problem
Existing systems incur duplicated verification efforts by generating certificates each time a connection is established, leading to inefficiencies.
Innovation Solution
Implementing a network traffic management system that caches certificates for future connections by generating a content cache key, retrieving a data structure from the cache, and using it for cryptographic operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a certificate is generated each time a connection is established, then authentication reliability is maintained, but verification efficiency deteriorates due to duplicated verification efforts
Solution Approach 1:
The system performs preliminary actions by generating and caching certificates during initial connection establishment or pre-computation phases. The certificate is stored in a cache structure with a cache key before the actual connection verification is needed, allowing rapid retrieval and reuse during subsequent connection attempts without regenerating the certificate each time.
Solution Approach 2:
The system creates a copy of the certificate and stores it in a cache structure. Instead of generating a new certificate for each connection, the cached copy is retrieved and reused. The cache key serves as an identifier to locate the appropriate certificate copy in the cache memory, enabling efficient duplication-free verification.
2Reliability
If a certificate is generated each time a connection is established, then authentication freshness is ensured, but system resource consumption increases
Solution Approach 1:
The certificate generation is performed as a preliminary action during initial connection setup or pre-computation, rather than repeatedly during each connection. The result is cached and reused, reducing the frequency of resource-intensive certificate generation operations while maintaining authentication freshness through proper cache invalidation strategies.
Solution Approach 2:
Instead of generating new certificates for each connection, the system uses copied versions stored in the cache. The cache key mechanism allows efficient retrieval of the appropriate certificate copy, significantly reducing computational resource consumption while maintaining security through proper certificate management and invalidation.
3Productivity
If certificates are cached for future connections, then connection efficiency is improved, but cache management complexity increases
Solution Approach 1:
The system extracts only the essential certificate data and stores it in the cache structure, separating the certificate content from the connection context. The cache key is derived from relevant connection parameters, allowing efficient retrieval. This extraction approach simplifies cache management by storing only necessary information rather than entire connection states.
Solution Approach 2:
The cache structure is designed with universal applicability, using a standardized cache key format that can identify certificates across different connection types. This multi-functional cache design allows the same structure to serve multiple connection scenarios, reducing the need for separate cache management mechanisms for different connection types.
Data Source
AI summary
Methods, non-transitory computer readable media, network traffic manager apparatuses, and systems that assist with establishing a connection to a server with a certificate includes receiving a request for establishing an encrypted connection and obtaining a certificate responsive to the received request. Next, the network traffic manager apparatus generates a content cache key for the obtained certificate. Next, the network traffic manager apparatus retrieves a data structure in the cache using the generated content cache key for the obtained certificate. The retrieved data structure is generated and stored in the cache during a previous established encrypted connection. The data structure comprises of extracted data from a previous certificate. Then, the network traffic manager apparatus initiates encryptographic operations using the retrieved data structure from the cache.