Quantum Direct Communication Encryption for Non-Ideal Device Security
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Solution Overview
Problem
Quantum direct communication systems are vulnerable to attacks by quantum hackers due to the use of non-ideal devices, leading to data leaks during information transmission.
Innovation Solution
Implement encryption algorithms such as symmetric, asymmetric, and post-quantum ciphers to encrypt messages, followed by precoding with error-correcting and spread spectrum coding before encoding into quantum states, and decoding with corresponding decryption algorithms at the receiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If quantum direct communication systems use non-ideal devices for practical implementation, then the system becomes more practical and easier to deploy, but security is compromised and data leaks occur
Solution Approach 1:
The patent applies preliminary action by encrypting the plaintext message before it enters the quantum direct communication terminal. The encryption algorithm processes the message in advance to generate ciphertext, which is then encoded into quantum states. This preliminary encryption ensures that even if non-ideal devices are used, the information remains secure from eavesdropping attacks.
2Reliability
If encryption algorithms are applied to messages before quantum encoding, then security against eavesdropping is enhanced, but the complexity of the communication system increases
Solution Approach 1:
The patent merges the encryption function with the quantum direct communication terminal. The encryption algorithm is integrated into the terminal's processing architecture, allowing the terminal to perform both quantum encoding and cryptographic encryption functions. This merging approach enhances security while avoiding the need for separate, independent encryption devices that would increase overall system complexity.
3Reliability
If multiple coding layers (precoding, error-correcting coding, spread spectrum coding) are applied, then the robustness and security of transmission is improved, but the processing time and computational resources required increase
Solution Approach 1:
The patent applies multiple coding layers as preliminary processing steps before quantum encoding. The precoding module performs error-correcting lossless coding and spread spectrum coding in advance on the ciphertext, creating a robust transmitted codeword. This preliminary coding ensures that the quantum states are prepared with built-in error correction and security features, reducing the need for complex real-time processing during transmission.
Data Source
AI summary
A communication method for quantum direct communication and quantum direct communication system, an electronic device and a non-transitory computer-readable storage medium. The quantum direct communication method is applied to a sender of the quantum secure direct communication system. The communication method includes: encrypting a transmitted message by using an encryption algorithm to obtain a ciphertext corresponding to the transmitted message; encoding the ciphertext into a quantum state through a quantum direct communication terminal of the sender according to a quantum communication protocol; and sending the quantum state to a receiver of the quantum direct communication system. According to some embodiments, by utilizing the encryption algorithm to encrypt the transmitted message, the capability of eavesdropper detection is provided for ciphertext transmission, reducing the risk of messages being intercepted by eavesdroppers. Meanwhile, the security of quantum direct communication systems constructed with non-ideal devices is strengthened.