Temporary Node ID Authentication for Privacy-Preserving Communication
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Solution Overview
Problem
Existing communication systems face issues with node identity leakage, leading to privacy and data security vulnerabilities, as attackers can trace user locations and activities based on node IDs, compromising user privacy.
Innovation Solution
Implementing a communication method that uses temporary public and private keys to encrypt and decrypt node identities, along with digital certificates for verification, ensuring that real IDs are not directly transmitted, and using temporary IDs during subsequent communication to maintain security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If real node IDs are transmitted directly for identity indication, then communication efficiency is improved, but user privacy and data security deteriorate due to tracking and leakage risks
Solution Approach 1:
The patent segments the identity indication process into two parts: initial communication phase using real IDs for efficiency, and subsequent communication phase using temporary IDs for privacy protection. This temporal segmentation allows the system to achieve both communication efficiency and privacy security by using different identification mechanisms at different stages.
Solution Approach 2:
The patent introduces temporary IDs as an intermediary between the real node ID and the communication process. The temporary ID acts as a mediator that preserves communication functionality while protecting the real identity, thereby resolving the contradiction between efficient identification and privacy protection.
2Object-affected harmful factors
If temporary IDs are used for all communication, then privacy security is improved, but communication efficiency deteriorates due to additional key management overhead
Solution Approach 1:
The patent implements a dynamic key management strategy where the system transitions from using real IDs to temporary IDs based on communication stage. The key management complexity is dynamically adjusted: minimal overhead in the initial phase, and enhanced protection in the subsequent phase, thereby balancing security and efficiency.
Solution Approach 2:
The patent performs preliminary key pair generation and temporary ID creation before the communication session begins. This preliminary action ensures that when temporary IDs are needed, the key management infrastructure is already in place, reducing the actual overhead during communication and balancing security with efficiency.
3Reliability
If real node IDs are used for authentication, then authentication reliability is improved, but data security deteriorates due to identity tracking by attackers
Solution Approach 1:
The patent changes the identification parameter from a static real node ID to a dynamic temporary ID after initial authentication. This parameter change maintains authentication reliability (since the temporary ID is tied to the authenticated session) while preserving identity secrecy (since the temporary ID does not reveal the real identity to attackers).
Data Source
AI summary
A communication method includes: sending a first public key and a signature of the first public key; receiving first information from a second node, where the first information includes an identification (ID) ciphertext; decrypting the ID ciphertext based on a first private key corresponding to the first public key, to obtain an ID of the second node; and sending second information to the second node, where the second information includes a temporary ID corresponding to the second node, and the temporary ID is used to temporarily indicate an identity of the second node.