Packet Reordering Security Processing for Keyless Message Transmission
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Solution Overview
Problem
Existing secure transmission schemes rely on complex key management protocols that are vulnerable to non-target receiving nodes, reducing message security, especially for messages transmitted before key agreement.
Innovation Solution
A communication method involving security processing and reordering of message packets to diffuse errors across multiple packets, using random seeds to enhance security without keys, and flexible reprocessing based on decoding success to maintain communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If key-based secure transmission schemes are used, then message security is provided, but protocol complexity increases and vulnerabilities to non-target receiving nodes arise
Solution Approach 1:
The patent extracts and removes the key management component from the secure transmission system. By using a keyless security processing scheme based on randomness extractors, the invention eliminates the need for key agreement protocols and key maintenance mechanisms, thereby reducing protocol complexity while maintaining security through error diffusion across multiple message packets
Solution Approach 2:
The patent segments the message into multiple packets and applies security processing to each packet independently using randomness extractors. This segmentation allows the system to achieve security without requiring complex key management protocols, as each packet can be processed securely in isolation while contributing to overall message security through the collective error diffusion effect
2Reliability
If key-based encryption is applied, then message security is improved, but buffer overheads increase due to key maintenance requirements
Solution Approach 1:
The invention removes the key management infrastructure from the system, eliminating the need for buffers dedicated to storing and managing encryption keys. The keyless security processing scheme uses randomness extractors that operate directly on message packets without requiring additional buffer space for key maintenance
3Productivity
If messages are transmitted before key agreement, then communication efficiency is improved, but message security is reduced
Solution Approach 1:
The patent applies security processing to message packets before transmission using randomness extractors, enabling messages to be secured in advance without requiring key agreement. This preliminary security processing allows messages to be transmitted immediately with security guarantees, eliminating the need to wait for key establishment while maintaining both communication efficiency and message security
Data Source
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AI summary
This application discloses a communication method and apparatus. The method includes: A first apparatus performs security processing on q first message packets to obtain q second message packets; after reordering the q second message packets, the first apparatus may perform security processing on the q reordered second message packets to obtain q third message packets; and then, the first apparatus may send q signals, where the q signals are obtained based on the q third message packets. According to the method, at a non-target receiving node, an error can be diffused in a plurality of message packets to the greatest extent, to improve message security.