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Divisible electronic cash construction method based on ternary tree

A technology of electronic cash and construction method, applied in the field of information security, can solve the problems of reduced payment efficiency and large payment times, and achieve the effects of reducing the number, saving resources, and improving payment efficiency

Inactive Publication Date: 2018-01-30
CIVIL AVIATION FLIGHT UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing divisible electronic cash system only allows users to purchase a single electronic cash with a denomination of 2 n , and then use it multiple times
Although this kind of electronic cash can satisfy any amount of payment in the payment agreement, it may cause a large number of payments, resulting in a reduction in payment efficiency

Method used

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  • Divisible electronic cash construction method based on ternary tree
  • Divisible electronic cash construction method based on ternary tree

Examples

Experimental program
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Effect test

Embodiment Construction

[0015] Step 1: Public parameter setting of the electronic cash system. Let S n is a collection of strings of length less than n. For any s∈S n , |s| indicates the length of the bit string s, and the set Y n (s)={y||y|=n, y is formed by adding a character string at the end of s}. Let G 1 , G 2 is a group whose order is a prime number p, {G 1 , G 2 , G T , e} is a bilinear group, G=e(g, h) is G T A generator of , g, h are respectively G 1 , G 2 The generator of , e is a bilinear map.

[0016] Step 2: Construct face value 3 n electronic cash. Use a ternary tree of depth n to construct the face value 3 n electronic cash. The root node is GS, which contains parameters such as the issuance time of the electronic cash and the bank information that issued the electronic cash. The non-root and non-leaf nodes of the ternary tree are s∈S n , where the number of bits of s is equal to its depth.

[0017] For each non-root non-leaf node of the ternary tree, s∈S n , choose...

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Abstract

The invention belongs to the technical field of information security, and particularly relates to a tree structure electronic cash construction method of the electronic cash. According to the method,firstly an electronic cash system common parameter setting method is given, then the tree structure of the electronic cash of which the denomination is 3n is given, and the electronic cash is constructed according to the tree structure. The user is enabled to buy single electronic cash of which the denomination is 3n from an electronic cash issuing agency and complete payment for the electronic cash by multiple times.

Description

technical field [0001] The present invention is a ternary tree structure with a face value of 3 n The construction method of the divisible electronic cash is mainly used to solve the problem of a single amount in the divisible electronic cash, and belongs to the technical field of information security. Background technique [0002] Dividable electronic cash is a digital currency system in which users can purchase a large denomination of electronic cash at a time and then pay in multiple installments. The divisible electronic cash system provides users with anonymity protection, can realize the identity tracking of double-spending users, and is divisible at the same time, which is very convenient to use. [0003] However, the existing divisible electronic cash system only allows users to purchase a single electronic cash with a denomination of 2 n , and then use it multiple times. Although this kind of electronic cash can satisfy any amount of payment in the payment protoc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q20/36
Inventor 刘建华刘佳嘉
Owner CIVIL AVIATION FLIGHT UNIV OF CHINA
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