Lightweight hybrid encryption transmission method and system resistant to quantum attacks

By combining lattice-based public-key cryptography with symmetric encryption algorithms and a fast dimensionality reduction decoding mechanism, the high computational complexity of lattice-based cryptography in resource-constrained devices is solved, achieving efficient quantum-safe encrypted transmission, which is suitable for scenarios such as the Internet of Things and edge computing.

CN120675692BActive Publication Date: 2026-06-02WUXI ALEADER INTELLIGENT TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUXI ALEADER INTELLIGENT TECH
Filing Date
2025-05-30
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing lattice-based cryptographic schemes have high computational complexity, long computation time, and large memory requirements in key generation, ciphertext encapsulation, and decapsulation processes, making them difficult to deploy efficiently on resource-constrained terminal devices. Furthermore, they lack the ability to perceive and adapt to the dynamic operating status of devices, resulting in low encryption efficiency.

Method used

A hybrid encryption method combining lattice-based public-key mechanisms and symmetric encryption algorithms is adopted. The key negotiation and encapsulation are completed through lattice-based algorithms, and then data encryption and decryption are performed using symmetric algorithms. A fast dimensionality reduction decoding mechanism based on pre-trained mapping relationships is introduced, and sparse matrix encoding and quantization compression techniques are combined to reduce computational burden and storage pressure.

Benefits of technology

While ensuring quantum-resistant security, it significantly reduces the computational, storage, and communication burden on devices, improves encryption efficiency, and is suitable for resource-constrained terminal devices and scenarios such as the Internet of Things and edge computing.

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Abstract

The application discloses a kind of lightweight hybrid encryption transmission methods and systems of anti quantum attack, to solve the problems of existing lattice encryption algorithm, such as high resource consumption, difficult to be applied to embedded device and Internet of Things scene, complex calculation.The method is based on LWE problem to construct key encapsulation mechanism, uses its anti quantum attack ability to carry out key negotiation, and combines lightweight symmetric encryption algorithm to encrypt data transmission.In the process of unsealing, introduce fast dimension reduction decoding mechanism, by the mapping matrix obtained by training, high-dimensional ciphertext vector and private key vector are mapped to reduce dimension, to reduce matrix operation complexity and improve decryption efficiency.The application can significantly reduce the implementation cost and operation burden of algorithm on embedded platform while maintaining anti quantum security, suitable for Internet of Things terminal, edge computing node and other low-power devices sensitive to security and energy consumption, with good security, lightweight and deployment practicability.
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