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Anti-quantum computing blockchain transaction method and system based on one-time variable secret sharing and routing devices

A technology of secret sharing and quantum computing, 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: 2020-07-07
南京如般量子科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008]2. 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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  • Anti-quantum computing blockchain transaction method and system based on one-time variable secret sharing and routing devices
  • Anti-quantum computing blockchain transaction method and system based on one-time variable secret sharing and routing devices
  • Anti-quantum computing blockchain transaction method and system based on one-time variable secret sharing and routing devices

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Embodiment Construction

[0074] instructions

[0075] The system structure diagram of the embodiment of the present invention is as figure 1 As shown, the encryption system for communication between the client and the routing device uses the ECC system.

[0076] When the routing device issues the key card for the user, first select the domain parameters of the elliptic curve to include q, a, b, P and n. q represents the size of the finite field Fq; the variables a and b are the elliptic curve y 2 =x 3 Coefficient of +ax+b, satisfying 4a 3 +27b 2 ≠0; P is the base point generator. After generating the elliptic curve, select the base point generator P, satisfying that its order is an integer n. The generated private key sk and public key pk satisfy pk=sk*P. The relevant parameters {q, a, b, P, n} of the algorithm are written into the designated area of ​​the key card.

[0077] Perform (2,2) secret sharing on the private key SK of each client. When performing (t, n) secret sharing on information...

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Abstract

The invention discloses an anti-quantum computing blockchain transaction method and an anti-quantum computing blockchain transaction system based on one-time variable secret sharing and routing devices. The anti-quantum computing blockchain transaction system comprises a blockchain network formed by communication connection of one or more intranet, wherein each intranet is provided with a plurality of users and routing devices, the users are in communication connection with the routing devices in the corresponding intranet, and each routing device is provided with a blockchain client for providing CA service; and each routing device issues secret key cards and secret keys to the users in the corresponding intranet, and stores a private key of each user in a distributed manner in a secret sharing manner. According to the anti-quantum computing blockchain transaction method and the anti-quantum computing blockchain transaction system, bidirectional verification is carried out between a transaction initiator and the routing devices; a signature transaction is formally transmitted after the verification is passed; the users and the routing devices need to sign respectively, thus complete transaction signatures can be completed; and the secret keys used in the whole transaction process comprise a main secret key component and a one-time variable secret key component, the secret keymanagement and use safety is high, and the rights and interests of blockchain accounts corresponding to the secret key cards are greatly protected.

Description

technical field [0001] The invention relates to the technical field of blockchain information security, in particular to a quantum-resistant blockchain transaction method and system based on a one-time-change secret sharing and routing device. Background technique [0002] Blockchain is a brand-new distributed infrastructure and computing paradigm. It uses an ordered 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 technology, especially public key cryptography, has been widely used in blockchain. [0003] As most people understand, quantum computers have great potential for code-breaking. Today's mainstream asymmetric (public key) encryption algorithms, such as the RSA encryption algorithm, are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L29/06H04L9/32H04L9/30H04L9/08G06Q40/04G06F21/60
CPCH04L67/1097H04L9/3247H04L63/0869H04L9/3242H04L9/3066H04L9/0861G06F21/602G06Q40/04H04L9/50
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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