Cryptographic Host Key Distribution in Cloud Virtual Machines
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In cloud computing environments, existing methods fail to securely distribute cryptographic host keys to newly created virtual machines, especially in dynamic settings where virtual machines are frequently created and destroyed from the same IP addresses, making it difficult to verify host identity and ensure secure communication.
Innovation Solution
A system that generates and manages cryptographic host key pairs, either at an Application Program Interface (API) system or within the virtual machine, using metadata servers to securely exchange keys, ensuring that each virtual machine receives its unique encryption key, allowing clients to verify the virtual machine's identity and communicate securely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If virtual machines are frequently created and destroyed from the same IP addresses in a dynamic cloud environment, then cloud computing flexibility and resource utilization are improved, but host identity verification becomes difficult and security is compromised
Solution Approach 1:
The patent introduces a metadata server as an intermediary component that maintains persistent associations between virtual machine identifiers and cryptographic host keys. This mediator allows the system to handle dynamic VM creation/destruction while preserving identity verification capability, as the metadata server acts as the authoritative source for key distribution and verification regardless of IP address changes.
Solution Approach 2:
The system performs preliminary actions by pre-generating and storing cryptographic host key pairs in the metadata server before virtual machines are created. When a VM is instantiated, the key material is already prepared and can be rapidly distributed through the metadata server, enabling quick identity establishment without compromising security during dynamic provisioning.
2Reliability
If cryptographic host keys are securely distributed to newly created virtual machines, then secure communication and identity verification are enabled, but system complexity increases due to key management infrastructure
Solution Approach 1:
The metadata server performs multiple functions: it stores cryptographic host keys, distributes keys to virtual machines, verifies host identities, and manages key lifecycle. This multi-functional approach consolidates what could be separate complex components into a single unified service, reducing overall system complexity while maintaining secure communication capabilities.
Solution Approach 2:
The system enables self-service key distribution where the metadata server automatically manages key generation, storage, and distribution without requiring manual intervention. Virtual machines can autonomously retrieve their cryptographic keys from the metadata server using their identifiers, eliminating the need for complex manual key management procedures.
3Measurement precision
If unique cryptographic host key pairs are generated for each virtual machine, then host identity verification is enabled, but key distribution security becomes challenging in dynamic environments
Solution Approach 1:
The metadata server serves as a secure intermediary that holds the authoritative mapping between virtual machine identifiers and cryptographic host keys. This centralized mediator simplifies the security model by providing a single trusted source for key distribution, eliminating the need for complex peer-to-peer verification mechanisms while maintaining precise host identity verification.
Solution Approach 2:
The system segments the key management functionality by separating key generation, storage, and distribution into distinct operational phases managed by the metadata server. This segmentation allows each function to be optimized independently while maintaining overall security, with the metadata server acting as the secure boundary between key generation and distribution operations.
Data Source
AI summary
Methods, systems, and apparatuses, including computer programs encoded on a computer storage medium, for distribution of cryptographic keys. In one aspect, a method includes receiving a plurality of requests, each request being received by a different respective virtual machine of a plurality of virtual machines; generating, by each of the virtual machines, a different host key pair, wherein each of the host key pairs comprises an encryption key and a decryption key that are associated with the virtual machine that generated it; providing, by each of the virtual machines, the encryption key generated by the virtual machine to a distinct metadata server that stores parameters of the virtual machine; and sending, from each of the metadata servers, the encryption key generated by the virtual machine that the metadata server is configured to communicate with to an application programming interface system.