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A secure fine-grained prepayment method and device

A fine-grained, pre-paid technology, applied in the field of information security in communication systems, can solve problems such as high transaction costs and slow transactions, and achieve the effect of improving liquidity and enhancing user privacy protection.

Active Publication Date: 2020-06-30
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some deficiencies in the current electronic payment technology: First, electronic payment is an online payment process, which requires the payer, payee, and payment endorser to be online at the same time to complete the transaction
However, there are still some defects in the current system, such as the need for online transactions, slow transactions, and high transaction fees

Method used

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  • A secure fine-grained prepayment method and device
  • A secure fine-grained prepayment method and device
  • A secure fine-grained prepayment method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Such as Figure 5 As shown, a safe fine-grained prepayment method, the payment method is applied to the payment system, and the payment method includes:

[0068] Step S210: Obtain the public parameters of the payment system, the public key and private key of the registration authority, the public key and private key of the system participants, and generate accounts according to the public keys of the system participants; the system participants include payment endorsers, payers, Beneficiary;

[0069] Step S220: The system participant interacts with the registration authority to obtain a public key certificate;

[0070] Step S230: The payer sets preset information, the preset information is the payee, locked amount and deadline conditions, and the payee sets new preset information as a new payer to form a corresponding off-chain payment chain ;

[0071] Step S240: The payment endorser verifies the validity of the payer public key certificate and the preset information...

Embodiment 2

[0113] combine figure 2 As shown, each module of the system of the present invention involves cryptographic tools, so before introducing the system, first understand the basic cryptographic tools that need to be used, including one-way function, digital signature, and aggregate signature cryptographic tools.

[0114] Define one-way functions, digital signatures, aggregate signatures:

[0115] Let f denote a one-way function.

[0116] Order Π 1 =(KGen, Sig, Ver) represents a digital signature scheme, where KGen, Sig, Ver are the secret key generation algorithm, signature algorithm and verification algorithm respectively.

[0117] Order Π 2 =(KGen, ASig, AVer, AggSig, AggVer) represents an aggregated signature scheme, where KGen, ASig, AVer, AggSig, and AggVer are respectively the secret key generation algorithm, signature algorithm, verification algorithm, aggregation algorithm, and aggregation verification algorithm.

[0118] One-way Function

[0119] A one-way function ...

specific Embodiment

[0141] Such as figure 1 As shown, according to the secure fine-grained prepayment system 100 according to an embodiment of the present invention, the system structure of the present invention can be given by the above-mentioned cryptographic basic tools. Define Ω=(initialization, registration, preset, verification, payment, collection, settlement) as the basic structure, and summarize the system into 7 algorithm modules, including: initialization module 110, registration module 120, preset module 130, verification module module 140, payment module 150, collection module 160, settlement module 170.

[0142] Among them, the initialization module is used to generate system public parameters, registration authority public key and private key, system participant public key and private key, and generate an account according to the system participant public key. System participants refer to payment endorsers, payers, and payees; registration modules are used for system participants ...

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PUM

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Abstract

The invention discloses a safe fine-grained pre-payment method and device. The method comprises the following steps: initialization: system public parameters as well as public and private keys of a registration institution and a participant are generated; registration: the registration institution generates a public key certificate of the participant; presetting: a payer sets up preset informationof a payee, lock-in amount and a deadline condition, while the payee sets up new preset information as a new payer to form an off-chain payment chain or ring; verification: a payment endorser verifies the validity of a public key certificate and preset information of the payer, and generates a prepayment voucher; payment: the payer passes the prepayment voucher and a payment signature to the payee; receiving: the payee verifies the validity of the prepayment voucher, the payment signature and payment amount; and settlement, the payment endorser verifies the validity of the prepayment voucher,payment signature and payment amount submitted by the payee, and allocates the balance. Through adoption of the method and the device, forgery, double expenditure and excessive expenditure can be resisted; fine-grained instant payment is realized; the currency circulation is enhanced; and the user privacy is protected.

Description

technical field [0001] The invention relates to the field of information security in communication systems and the technical field of digital currency payment in communication systems, in particular to a safe fine-grained prepayment method and device. Background technique [0002] With the rapid development of the economy and the rapid progress of electronic technology, electronic payment has been widely used due to its advantages of fastness and convenience. Electronic payment uses digital currency for transactions, getting rid of the dependence on traditional paper currency and bills, making the payment process faster, more efficient, and lower transaction costs; electronic payment can improve the supervision of corporate capital operations. However, there are still some shortcomings in the current electronic payment technology: First, electronic payment is an online payment process, which requires the payer, payee, and payment endorser to be online at the same time to com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q20/28G06Q20/38
CPCG06Q20/28G06Q20/38215G06Q20/3825G06Q20/3829
Inventor 伍前红钟林
Owner BEIHANG UNIV