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Block chain system signature method and device based on quantum key distribution

A quantum key distribution, blockchain technology, applied in key distribution, can solve problems such as attacks, digital signature algorithms are no longer safe, and achieve the effect of improving transparency

Inactive Publication Date: 2018-11-02
天津中兴云链技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the security of the digital signature algorithm used in the current blockchain system is based on the conjecture of the computational complexity of fixed mathematical problems. A general-purpose quantum computer will make the digital signature algorithm used in the blockchain no longer safe. For example, when After the attacker has mastered the quantum computer, he will gather most of the computing power of the entire network, and the problem of 51% attack may occur

Method used

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  • Block chain system signature method and device based on quantum key distribution
  • Block chain system signature method and device based on quantum key distribution
  • Block chain system signature method and device based on quantum key distribution

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0049] figure 1 It is a flowchart of a signature method of a blockchain system based on quantum key distribution provided by Embodiment 1 of the present invention. This embodiment is applicable to the signature of a blockchain system based on quantum key distribution. The method It can be executed by the signature device of the blockchain system based on quantum key distribution in the embodiment of the present invention, and the device can be implemented in software and / or hardware, such as figure 1 As shown, the method specifically includes the following steps:

[0050] S110, the blockchain node generates transaction information.

[0051] Wherein, the transaction information is generated by the blockchain nodes, and the transaction information is shared by the blockchain nodes. The blockchain nodes generate the transaction information and broadcast the transaction information. Others in the blockchain All nodes know the transaction information.

[0052] Specifically, the tr...

Embodiment 2

[0077] figure 2 It is a flowchart of a verification method for a blockchain system based on quantum key distribution in Embodiment 2 of the present invention. This embodiment is optimized based on the above-mentioned embodiment. In this embodiment, the blockchain in the Other nodes receive the signed transaction information; other nodes in the blockchain select a key from the key pool to generate a Toeplitz matrix, and use the Toeplitz matrix to verify the signed transaction information.

[0078] Such as figure 2 As shown, the method of this embodiment specifically includes the following steps:

[0079] S210, other nodes in the blockchain receive the signed transaction information.

[0080] Specifically, other nodes in the blockchain receive the signed transaction information sent by the blockchain node.

[0081] S220, other nodes in the blockchain select a key from the key pool to generate a Toeplitz matrix, and use the Toeplitz matrix to verify the signed transaction in...

Embodiment 3

[0105] image 3 It is a schematic structural diagram of a signature device of a blockchain system based on quantum key distribution provided by Embodiment 3 of the present invention. This embodiment can be applied to the signature of a blockchain system based on quantum key distribution, the device can be implemented in software and / or hardware, and the device can be integrated in any blockchain that provides quantum key distribution The system's signature functions in the device, such as image 3 As shown, the signing device of the blockchain system based on quantum key distribution specifically includes: a blockchain node 300 , and the blockchain node includes: a generation module 310 , a signature module 320 and a sending module 330 .

[0106] Wherein, the generation module 310 is used to generate transaction information;

[0107] The signature module 320 is used to select a key from the key pool to generate a Toeplitz matrix, and use the Toeplitz matrix to sign the trans...

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PUM

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Abstract

The embodiment of the invention discloses a block chain system signature method and device based on quantum key distribution. The method comprises the following steps: generating transaction information by a block chain node; selecting a key from a key pool by the block chain node and generating a Toeplitz matrix, and signing the transaction information by adopting the Toeplitz matrix, wherein keys in the key pool are generated by virtue of a quantum key distribution technology; and sending the signed transaction information to other nodes in a block chain by the block chain node. By virtue ofthe technical scheme of the invention, transparency, high efficiency, safety and reliability of the block chain system can be enhanced.

Description

technical field [0001] The embodiment of the present invention relates to block chain technology, in particular to a signature method and device for a block chain system based on quantum key distribution. Background technique [0002] The information among the participants in the traditional supply chain is highly asymmetric, and often only their own data can be queried. Even upstream and downstream enterprises, or between upper and lower enterprises of the same supply chain node, cannot achieve timely information Communicate, deliver and share. This makes it difficult for enterprises to make correct decisions when making decisions. As a result, the cost of each entity in the supply chain increases, profits decrease and even losses occur, and the efficiency of the entire supply chain system is also reduced. For consumers, when they need to inquire about the detailed information of a certain product, on the one hand, they cannot be sure whether the product information is tru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04L9/08
CPCH04L9/0825H04L9/0852H04L9/0855H04L9/0861H04L9/3247
Inventor 李梅韦安
Owner 天津中兴云链技术有限公司
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