Quantum cryptography network reliable encrypted transmission system and method

A technology of encrypted transmission and quantum cryptography, applied in the field of reliable encrypted transmission system of quantum cryptography network, can solve the problem of low security of encrypted data, and achieve the effect of enhancing operability, increasing the difficulty of cracking, and reducing consumption

Active Publication Date: 2018-02-09
SHANDONG INST OF QUANTUM SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But even at this stage, the AES algorithm is not absolutely safe. With the increase of computer computing speed and the research progress of cracking algorithms, the more times the same key is reused, the lower the security of encrypted data will be.

Method used

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  • Quantum cryptography network reliable encrypted transmission system and method
  • Quantum cryptography network reliable encrypted transmission system and method

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Experimental program
Comparison scheme
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Embodiment 1

[0059] This embodiment constructs a specific quantum cryptography network reliable encrypted transmission system, and describes the system structure and its corresponding functions.

[0060] figure 1 It is a schematic diagram of the basic structure of the network nodes of the quantum cryptography network capable of implementing reliable encrypted communication in the first embodiment. The network node A101 and the network node B102 of the quantum cryptography network are connected through the classical network 103 and the quantum network 104 . A service application module 105, a reliable encrypted transmission system 106 and a QKD device 108 are set in each network node. The QKD devices 108 of each network node generate quantum keys through the quantum network 104, and form a shared quantum key store 107 with each other. The reliable encrypted transmission system 106 at the sender's network node (hereinafter referred to as the encrypted node) uses the quantum key in the quan...

Embodiment 2

[0084] This embodiment is a method for reliable encrypted transmission using the quantum cryptography network reliable encrypted transmission system described in Embodiment 1, including the following steps:

[0085] Step 1: Set the policy update period, and preset the encryption policy to the encryption policy unit 203 at the sender network node;

[0086] Step 2: The service data buffering and distribution unit 204 buffers the service data packets to be encrypted, and adds attribute labels to the buffered service data packets;

[0087] Step 3: Encryption policy unit 203 collects current encryption-related information reflecting the supply and demand of quantum keys in this node;

[0088] Step 4: If the next policy update period has not started, the encryption policy unit 203 generates encrypted offload policy data based on the collected encryption related information and the preset encryption policy, and sends the encrypted offload policy data to the business data buffer offlo...

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Abstract

The invention provides a reliable encrypted transmission system of quantum cryptography network, which includes an encryption processing module composed of an encryption strategy unit, a business data buffering and shunting unit, a classical encryption unit and a quantum encryption unit, and a ciphertext classification unit and a ciphertext data buffer unit. , a decryption processing module composed of a classical decryption unit and a quantum decryption unit. At the same time, the present invention also provides a reliable encryption transmission method for a quantum cryptography network, which adopts a classical encryption method and a quantum one-time pad encryption method for split transmission of business data, which can be changed in time according to the change in the supply and demand relationship of quantum keys. The proportion of business data distribution, on the basis of ensuring security, increases the continuity of encrypted transmission of business data, and improves the reliability of encrypted transmission of business data; at the same time, it reduces the consumption of quantum key data and the quantum cryptography network. The quantum key generation load reduces the cost of encrypted transmission of quantum cryptographic network business data.

Description

technical field [0001] This patent belongs to the field of quantum cryptography communication, and in particular relates to a reliable encrypted transmission system and method for a quantum cryptography network. Background technique [0002] Quantum communication is a new interdisciplinary subject developed in the past two decades, and a new research field combining quantum theory and information theory. Recently, this subject has gradually moved from theory to experiment, and to practical development. Efficient and secure information transmission has attracted increasing attention. [0003] Physically, quantum communication can be understood as high-performance communication realized by using quantum effects under the physical limit. In informatics, we believe that quantum communication is the use of the basic principles of quantum mechanics (such as the principle of non-cloning of quantum states and the measurement collapse properties of quantum states, etc.) or the use ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/12H04L9/08
Inventor 原磊武宏宇赵梅生
Owner SHANDONG INST OF QUANTUM SCI & TECH
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