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Quantum computing resistant blockchain transaction method and system based on secret sharing and routing device

A technology of secret sharing and transaction methods, which is applied in the field of anti-quantum computing blockchain transactions, and can solve problems such as user account rights damage, rights theft, key card loss, etc.

Active Publication Date: 2022-07-08
南京如般量子科技有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 3. After the key card is lost or stolen, it may be used directly and cause damage to the rights and interests corresponding to the user account
For example, transfer all the rights and interests of the user account, resulting in the theft of rights and interests

Method used

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  • Quantum computing resistant blockchain transaction method and system based on secret sharing and routing device
  • Quantum computing resistant blockchain transaction method and system based on secret sharing and routing device
  • Quantum computing resistant blockchain transaction method and system based on secret sharing and routing device

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Embodiment Construction

[0068] instructions

[0069] The system structure diagram of the embodiment of the present invention is as follows figure 1 As shown, the cryptographic system used by the client to communicate with the routing device uses the ECC system.

[0070] When the routing device issues the key fob for the user, first select the domain parameters of the elliptic curve including q, a, b, P and n. q represents the size of the finite field Fq; the variables a and b are the elliptic curves y 2 =x 3 +ax+b coefficient, satisfying 4a 3 +27b 2 ≠0; P is the base point generator. After generating the elliptic curve, select the base point generator P, whose order is an integer n. The generated private key sk and public key pk satisfy pk=sk*P. The relevant parameters of the algorithm {q, a, b, P, n} are written into the designated area of ​​the key fob.

[0071] (2,2) secret sharing is performed on each client's private key SK. When performing (t,n) secret sharing on information m, n is th...

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Abstract

The present invention provides an anti-quantum computing blockchain transaction method and system based on a secret sharing and routing device, including a blockchain network composed of more than one intranet communication connection, each intranet is provided with a number of users and routers Device, the user communicates with the routing device in the intranet where it is located, and each routing device has a blockchain client that provides registration and authentication services; each user and routing device are respectively equipped with a key card, and the routing device is located in the intranet. The users in the router issue key cards and keys, and group the private keys of each user in a secret sharing manner, and store them in the routing device's own key card and the corresponding user's key card respectively. In the present invention, when the user trades, the user and the routing device are required to sign respectively to complete the complete transaction signature, and the transaction information is recorded by the routing device on the intranet where the user is located, instead of appearing in the blockchain record, which greatly protects the The rights and interests of the blockchain account corresponding to the key card.

Description

technical field [0001] The invention relates to the technical field of blockchain information security, in particular to a quantum computing-resistant blockchain transaction method and system based on a secret sharing and routing device. Background technique [0002] Blockchain is a brand-new distributed infrastructure and computing paradigm. It uses an orderly chained data structure to store data, uses consensus algorithms to update data, and uses cryptography to ensure data security. In blockchain-based transactions, ensuring the data security of transactions and the privacy of customers is a necessary condition for the further development of blockchain. For this reason, cryptography, especially public key cryptography, has been widely used in blockchain. [0003] As most people know, quantum computers have great potential for code breaking. Most of today's mainstream asymmetric (public key) encryption algorithms, such as RSA encryption algorithms, are based on two mathe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/40H04L67/1097H04L9/32H04L9/08G06Q40/04G06N10/00G06Q20/38
CPCH04L63/083H04L9/085H04L9/0869H04L9/3247H04L9/3268H04L67/1097G06Q40/04G06Q20/3825G06Q20/3829G06N10/00H04L9/50
Inventor 富尧钟一民杨羽成
Owner 南京如般量子科技有限公司
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