Reliable encryption transmission system and method of quantum cryptography network

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, reducing consumption and increasing continuity

Active Publication Date: 2014-06-04
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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  • Reliable encryption transmission system and method of quantum cryptography network
  • Reliable encryption transmission system and method of quantum cryptography network

Examples

Experimental program
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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 encryption transmission system of a quantum cryptography network. The reliable encryption transmission system comprises an encryption processing module and a decryption processing module, the encryption processing module is composed of an encryption strategy unit, a service data buffering shunt unit, a classic encryption unit and a quantum encryption unit, and the decryption processing module is composed of a cryptograph classification unit, a cryptograph data buffering unit, a classic decryption unit and a quantum decryption unit. Meanwhile, the invention further provides a reliable encryption transmission method of the quantum cryptography network. The classic encryption mode and the quantum one-time pad encryption mode are adopted for transmitting service data in a shunt mode, the shunt proportion of the service data can be timely and correspondingly changed according to changes of the quantum secret key supply-demand relationship, on the basis that the safety is guaranteed, the continuity of service data encryption transmission is improved, and the reliability of service data encryption transmission is improved. Meanwhile, the consumption of quantum secret key data is reduced, quantum secret key generation loads of the quantum cryptography network are reduced, and the cost of service data encryption transmission of the quantum cryptography network is reduced.

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 Applications(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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