CN111090842B - Supply chain financial customer loan information protection method based on zero knowledge certification - Google Patents

Supply chain financial customer loan information protection method based on zero knowledge certification Download PDF

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CN111090842B
CN111090842B CN201911335682.0A CN201911335682A CN111090842B CN 111090842 B CN111090842 B CN 111090842B CN 201911335682 A CN201911335682 A CN 201911335682A CN 111090842 B CN111090842 B CN 111090842B
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user
supply chain
information
block chain
database
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CN111090842A (en
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杨炜祖
李从恺
顾军
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Shanghai Yuanlu Jiajia Information Technology Co ltd
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Shanghai Yuanlu Jiajia Information Technology Co ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q40/00—Finance; Insurance; Tax strategies; Processing of corporate or income taxes
    • G06Q40/03—Credit; Loans; Processing thereof

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Abstract

The invention relates to the technical field of information protection, and discloses a supply chain financial customer loan information protection method based on zero knowledge proof, which comprises an information protection system, wherein the information protection system comprises a user identity authentication module, and the user identity authentication module has the functions of: when a user writes and/or reads data information into the database of the supply chain financial block chain, the user is provided with the data information
Figure DEST_PATH_IMAGE001
Performing identity verification based on zero-knowledge proof; if the user is
Figure 770436DEST_PATH_IMAGE001
When the identity authentication is legal, the user is allowed

Description

Supply chain financial customer loan information protection method based on zero knowledge certification
Technical Field
The invention relates to the technical field of information protection, in particular to a supply chain financial customer loan information protection method based on zero knowledge proof.
Background
Supply chain financing mainly depends on the credit of the core enterprise by banks, provides financing financial solution for the whole supply chain, and actually converts the financing capacity of the core enterprise into the financing capacity of upstream and downstream small and medium enterprises, thereby improving the credit level of the upstream and downstream small and medium enterprises.
At present, small and medium enterprises on the upstream and downstream of a supply chain cooperate through a block chain, all data are reliable, and thus a bank can ensure the authenticity of a loan condition by acquiring the real historical production condition and the current production condition of the loan enterprise in a block chain database.
However, for loan enterprises in supply chain financing, a series of loan-related business data, such as the confidential transaction stream, frequency, business objects and the like of the enterprise core, are synchronously disclosed among different nodes of the block chain, and once the core business data is known by competitors, the loan enterprises are greatly threatened.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a supply chain financial customer loan information protection method based on zero knowledge proof, which solves the technical problem that the loan information of the financial customers stored in the database of the supply chain financial block chain is illegally written and/or read at present.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme:
a supply chain financial client loan information protection method based on zero knowledge proof comprises an information protection system, wherein the information protection system comprises a user identity authentication module, and the user identity authentication module has the functions of: when there is a user
Figure 100002_DEST_PATH_IMAGE002
When data information is written and/or read into the database of the supply chain financial block chain, the user is provided with the data information
Figure DEST_PATH_IMAGE002A
Performing identity verification based on zero-knowledge proof;
if the user is
Figure DEST_PATH_IMAGE002AA
When the identity authentication is legal, the user is allowed
Figure DEST_PATH_IMAGE002AAA
Writing and/or reading data information into a database of a supply chain financial block chain; if the user is
Figure DEST_PATH_IMAGE002AAAA
If the authentication is illegal, the user is not allowed
Figure DEST_PATH_IMAGE002_5A
Writing and/or reading data information into a database of a supply chain financial block chain;
the method for realizing the verification of the user identity verification module comprises the following steps:
the method comprises the following steps: automatic character string generation of user identity authentication module
Figure 100002_DEST_PATH_IMAGE004
Automatically creating a character string
Figure 100002_DEST_PATH_IMAGE006
Is related to
Figure 100002_DEST_PATH_IMAGE008
And combining the character strings
Figure 100002_DEST_PATH_IMAGE010
Correlation function
Figure 100002_DEST_PATH_IMAGE012
To users within a supply chain financial block chain
Figure DEST_PATH_IMAGE002_6A
；
Step two: the user identity authentication module randomly selects an integer N and combines the N with the character string
Figure 100002_DEST_PATH_IMAGE014
Performing correlation to obtain correlation number
Figure 100002_DEST_PATH_IMAGE016
；
Step three: user' s
Figure DEST_PATH_IMAGE002_7A
Randomly selecting a bitA natural number having a number of at least 3
Figure 100002_DEST_PATH_IMAGE018
User identity authentication module calculation
Figure 100002_DEST_PATH_IMAGE020
And will be calculated
Figure 100002_DEST_PATH_IMAGE022
Back to the user
Figure DEST_PATH_IMAGE002_8A
；
Step four: user' s
Figure 100002_DEST_PATH_IMAGE024
According to
Figure 100002_DEST_PATH_IMAGE026
、
Figure 100002_DEST_PATH_IMAGE028
、
Figure 100002_DEST_PATH_IMAGE030
Calculating an integer N; if the user is
Figure DEST_PATH_IMAGE024A
If the calculated N is identical to the integer N randomly selected by the user identity authentication module, the user is proved
Figure DEST_PATH_IMAGE024AA
Legal users belonging to the supply chain financial block chain; if the user is
Figure DEST_PATH_IMAGE024AAA
If the calculated N is not the same as the integer N randomly selected by the user identity authentication module, the user is proved
Figure DEST_PATH_IMAGE002_9A
Within supply chain golden melt block chainAn illegal user.
Further, the information protection system is used for users
Figure DEST_PATH_IMAGE002_10A
When loan information is written into a database of a supply chain financial block chain, the specific protection method comprises the following steps:
the method comprises the following steps: user' s
Figure DEST_PATH_IMAGE002_11A
Before the loan information is written into the block database of the supply chain financial block chain network, the information protection system locks the loan information write page of the database of the supply chain financial block chain;
step two: popping up loan information on a page written with loan information and user
Figure DEST_PATH_IMAGE002_12A
The interactive communication dialog box has a traceless communication function, namely all interactive communication contents in the dialog box have no backup record;
step three: user' s
Figure DEST_PATH_IMAGE002_13A
Inputting a numerical value in the dialog box
Figure DEST_PATH_IMAGE026A
；
Step four: user authentication module random generation
Figure 100002_DEST_PATH_IMAGE032
According to the correlation function
Figure DEST_PATH_IMAGE012A
Calculate out
Figure 100002_DEST_PATH_IMAGE034
；
Then according to
Figure DEST_PATH_IMAGE020A
Calculate out
Figure 100002_DEST_PATH_IMAGE036
And apply the same
Figure 100002_DEST_PATH_IMAGE038
Returning in the dialog box;
step five: user' s
Figure DEST_PATH_IMAGE002_14A
According to known conditions
Figure 100002_DEST_PATH_IMAGE040
And will be calculated
Figure DEST_PATH_IMAGE040A
Inputting the data into a dialog box;
step six: user identity authentication module logarithm value
Figure DEST_PATH_IMAGE040AA
And a numerical value
Figure DEST_PATH_IMAGE032A
Verifying the consistency of the data; if value of
Figure DEST_PATH_IMAGE040AAA
And a numerical value
Figure 100002_DEST_PATH_IMAGE042
If the loan information is completely the same as the loan information of the supply chain financial block chain, the information protection system writes the loan information of the database of the supply chain financial block chain into a page to unlock; otherwise, locking is continued.
Further, the information protection system is used for users
Figure DEST_PATH_IMAGE002_15A
Reading loan information into a database of a supply chain financial block chainThe specific protection method comprises the following steps:
the method comprises the following steps: user' s
Figure DEST_PATH_IMAGE002_16A
When the loan information is read from the block database of the supply chain financial block chain network, the loan information search page is locked and popped up and matched with the user
Figure DEST_PATH_IMAGE002_17A
The interactive communication dialog box has a traceless communication function, namely all interactive communication contents in the dialog box have no backup record;
step two: user' s
Figure DEST_PATH_IMAGE002_18A
Inputting a numerical value in the dialog box
Figure DEST_PATH_IMAGE018A
；
Step three: user authentication module random generation
Figure DEST_PATH_IMAGE032AA
According to the correlation function
Figure DEST_PATH_IMAGE012AA
Calculate out
Figure 100002_DEST_PATH_IMAGE044
；
Then according to
Figure DEST_PATH_IMAGE020AA
Calculate out
Figure 100002_DEST_PATH_IMAGE046
And apply the same
Figure 100002_DEST_PATH_IMAGE048
Return in dialog box；
Step four: user' s
Figure DEST_PATH_IMAGE002_19A
According to known conditions
Figure DEST_PATH_IMAGE040AAAA
And will be calculated
Figure DEST_PATH_IMAGE040_5A
Inputting the data into a dialog box;
step five: user identity authentication module logarithm value
Figure DEST_PATH_IMAGE040_6A
And a numerical value
Figure DEST_PATH_IMAGE032AAA
Verifying the consistency of the data; if value of
Figure DEST_PATH_IMAGE040_7A
And a numerical value
Figure DEST_PATH_IMAGE042A
If the data are completely the same, unlocking the loan information retrieval page of the database of the supply chain financial block chain by the information protection system; otherwise, locking is continued.
(III) advantageous technical effects
Compared with the prior art, the invention has the following beneficial technical effects:
1. the invention is characterized in that users are available
Figure DEST_PATH_IMAGE002_20A
When data information is written and/or read into the database of the supply chain financial block chain, the user is provided with the data information
Figure DEST_PATH_IMAGE002_21A
Performing identity verification based on zero-knowledge proof; if the user is
Figure DEST_PATH_IMAGE002_22A
When the identity authentication is legal, the user is allowed
Figure DEST_PATH_IMAGE002_23A
Writing and/or reading data information into a database of a supply chain financial block chain; if the user is
Figure DEST_PATH_IMAGE002_24A
If the authentication is illegal, the user is not allowed
Figure DEST_PATH_IMAGE002_25A
Data information is written and/or read into the database of the supply chain financial block chain, so that the technical problem that financial customer loan information stored in the database of the supply chain financial block chain is illegally written and/or read at present is solved.
Detailed Description
A supply chain financial client loan information protection method based on zero knowledge proof comprises an information protection system, wherein the information protection system comprises a user identity authentication module, and the user identity authentication module has the functions of: when there is a user
Figure DEST_PATH_IMAGE024AAAA
When data information is written and/or read into the database of the supply chain financial block chain, the user is provided with the data information
Figure DEST_PATH_IMAGE002_26A
Performing identity verification based on zero-knowledge proof;
if the user is
Figure DEST_PATH_IMAGE002_27A
When the identity authentication is legal, the user is allowed
Figure DEST_PATH_IMAGE002_28A
Writing and/or reading data information into a database of a supply chain financial block chain; if the user is
Figure DEST_PATH_IMAGE002_29A
If the authentication is illegal, the user is not allowed
Figure DEST_PATH_IMAGE002_30A
Writing and/or reading data information into a database of a supply chain financial block chain;
the method for realizing the verification of the user identity verification module comprises the following steps:
the method comprises the following steps: automatic character string generation of user identity authentication module
Figure DEST_PATH_IMAGE004A
Automatically creating a character string
Figure 100002_DEST_PATH_IMAGE050
Is related to
Figure DEST_PATH_IMAGE008A
And combining the character strings
Figure 100002_DEST_PATH_IMAGE052
Correlation function
Figure DEST_PATH_IMAGE012AAA
To users within a supply chain financial block chain
Figure DEST_PATH_IMAGE002_31A
；
Step two: the user identity authentication module randomly selects an integer N and combines the N with the character string
Figure 100002_DEST_PATH_IMAGE054
Performing correlation to obtain correlation number
Figure 100002_DEST_PATH_IMAGE056
；
Step three: user' s
Figure DEST_PATH_IMAGE002_32A
Randomly selecting a natural number with a digit of at least 3
Figure DEST_PATH_IMAGE026AA
User identity authentication module calculation
Figure DEST_PATH_IMAGE020AAA
And will be calculated
Figure DEST_PATH_IMAGE036A
Back to the user
Figure DEST_PATH_IMAGE002_33A
；
Step four: user' s
Figure DEST_PATH_IMAGE002_34A
According to
Figure DEST_PATH_IMAGE018AA
、
Figure DEST_PATH_IMAGE046A
、
Figure DEST_PATH_IMAGE010A
Calculating an integer
Figure 100002_DEST_PATH_IMAGE058
(ii) a If the user is
Figure DEST_PATH_IMAGE002_35A
Calculated
Figure 100002_DEST_PATH_IMAGE058A
If the integer N is completely the same as the integer N randomly selected by the user identity authentication module, the user is certified
Figure DEST_PATH_IMAGE002_36A
Legal users belonging to the supply chain financial block chain; if the user is
Figure DEST_PATH_IMAGE002_37A
If the calculated N is not the same as the integer N randomly selected by the user identity authentication module, the user is proved
Figure DEST_PATH_IMAGE002_38A
Belonging to illegal users in the supply chain financial block chain.
Further, the information protection system is used for users
Figure DEST_PATH_IMAGE002_39A
When loan information is written into a database of a supply chain financial block chain, the specific protection method comprises the following steps:
the method comprises the following steps: user' s
Figure DEST_PATH_IMAGE002_40A
Before the loan information is written into the block database of the supply chain financial block chain network, the information protection system locks the loan information write page of the database of the supply chain financial block chain;
step two: popping up loan information on a page written with loan information and user
Figure DEST_PATH_IMAGE002_41A
The interactive communication dialog box has a traceless communication function, namely all interactive communication contents in the dialog box have no backup record;
step three: user' s
Figure DEST_PATH_IMAGE002_42A
Inputting a numerical value in the dialog box
Figure DEST_PATH_IMAGE018AAA
；
Step four: user authentication module random generation
Figure DEST_PATH_IMAGE032AAAA
According to the correlation function
Figure DEST_PATH_IMAGE012AAAA
Calculate out
Figure DEST_PATH_IMAGE044A
；
Then according to
Figure DEST_PATH_IMAGE020AAAA
Calculate out
Figure DEST_PATH_IMAGE046AA
And apply the same
Figure DEST_PATH_IMAGE048A
Returning in the dialog box;
step five: user' s
Figure DEST_PATH_IMAGE002_43A
According to known conditions
Figure DEST_PATH_IMAGE040_8A
And will be calculated
Figure DEST_PATH_IMAGE040_9A
Inputting the data into a dialog box;
step six: user identity authentication module logarithm value
Figure DEST_PATH_IMAGE040_10A
And a numerical value
Figure DEST_PATH_IMAGE032_5A
Verifying the consistency of the data; if value of
Figure DEST_PATH_IMAGE040_11A
And a numerical value
Figure DEST_PATH_IMAGE042AA
If the loan information is completely the same as the loan information of the supply chain financial block chain, the information protection system writes the loan information of the database of the supply chain financial block chain into a page to unlock; otherwise, locking is continued.
Further, the information protection system is used for users
Figure DEST_PATH_IMAGE002_44A
When the loan information is read from the database of the supply chain financial block chain, the specific protection method comprises the following steps:
the method comprises the following steps: user' s
Figure DEST_PATH_IMAGE024_5A
When the loan information is read from the block database of the supply chain financial block chain network, the loan information search page is locked and popped up and matched with the user
Figure DEST_PATH_IMAGE024_6A
The interactive communication dialog box has a traceless communication function, namely all interactive communication contents in the dialog box have no backup record;
step two: user' s
Figure DEST_PATH_IMAGE002_45A
Inputting a numerical value in the dialog box
Figure DEST_PATH_IMAGE026AAA
；
Step three: user authentication module random generation
Figure DEST_PATH_IMAGE032_6A
According to the correlation function
Figure DEST_PATH_IMAGE012_5A
Calculate out
Figure 100002_DEST_PATH_IMAGE060
；
Then according to
Figure DEST_PATH_IMAGE020_5A
Calculate out
Figure 100002_DEST_PATH_IMAGE062
And apply the same
Figure 100002_DEST_PATH_IMAGE064
Returning in the dialog box;
step four: user' s
Figure DEST_PATH_IMAGE002_46A
According to known conditions
Figure DEST_PATH_IMAGE040_12A
And will be calculated
Figure DEST_PATH_IMAGE040_13A
Inputting the data into a dialog box;
step five: user identity authentication module logarithm value
Figure DEST_PATH_IMAGE040_14A
And a numerical value
Figure DEST_PATH_IMAGE032_7A
Verifying the consistency of the data; if value of
Figure DEST_PATH_IMAGE040_15A
And a numerical value
Figure DEST_PATH_IMAGE042AAA
If the data are completely the same, unlocking the loan information retrieval page of the database of the supply chain financial block chain by the information protection system; otherwise, locking is continued.

Claims (3)

1. A supply chain finance client loan information protection method based on zero knowledge proof is characterized by comprising an information protection system, wherein the information protection system comprises a user identity authentication module, and the user identity authentication module has the functions of: when there is a user
Figure DEST_PATH_IMAGE002
When data information is written and/or read into the database of the supply chain financial block chain, the user is provided with the data information
Figure DEST_PATH_IMAGE004
Performing identity verification based on zero-knowledge proof;
if the user is
Figure DEST_PATH_IMAGE006
When the identity authentication is legal, the user is allowed
Figure DEST_PATH_IMAGE006A
Writing and/or reading data information into a database of a supply chain financial block chain; if the user is
Figure DEST_PATH_IMAGE006AA
If the authentication is illegal, the user is not allowed
Figure DEST_PATH_IMAGE006AAA
Writing and/or reading data information into a database of a supply chain financial block chain;
the method for realizing the verification of the user identity verification module comprises the following steps:
the method comprises the following steps: automatic character string generation of user identity authentication module
Figure DEST_PATH_IMAGE008
Automatically creating a character string
Figure DEST_PATH_IMAGE010
Is related to
Figure DEST_PATH_IMAGE012
And combining the character strings
Figure DEST_PATH_IMAGE014
Correlation function
Figure DEST_PATH_IMAGE016
To users within a supply chain financial block chain
Figure DEST_PATH_IMAGE006AAAA
；
Step two: the user identity authentication module randomly selects an integer N and combines the N with the character string
Figure DEST_PATH_IMAGE018
Performing correlation to obtain correlation number
Figure DEST_PATH_IMAGE020
；
Step three: user' s
Figure DEST_PATH_IMAGE006_5A
Randomly selecting a natural number with a digit of at least 3
Figure DEST_PATH_IMAGE022
User identity authentication module calculation
Figure DEST_PATH_IMAGE024
And will be calculated
Figure DEST_PATH_IMAGE026
Back to the user
Figure DEST_PATH_IMAGE006_6A
；
Step four: user' s
Figure DEST_PATH_IMAGE006_7A
According to
Figure DEST_PATH_IMAGE028
、
Figure DEST_PATH_IMAGE030
、
Figure DEST_PATH_IMAGE032
Calculating an integer
Figure DEST_PATH_IMAGE034
(ii) a If the user is
Figure DEST_PATH_IMAGE006_8A
Calculated
Figure DEST_PATH_IMAGE034A
If the integer N is completely the same as the integer N randomly selected by the user identity authentication module, the user is certified
Figure DEST_PATH_IMAGE006_9A
Legal users belonging to the supply chain financial block chain; if the user is
Figure DEST_PATH_IMAGE006_10A
If the calculated N ʹ is not the same as the randomly selected integer N of the user identity authentication module, the user is certified
Figure DEST_PATH_IMAGE006_11A
Belonging to illegal users in the supply chain financial block chain.
2. The method as claimed in claim 1, wherein the information protection system is provided at the user's end for protecting the loan information of the financial clients in the supply chain
Figure DEST_PATH_IMAGE006_12A
When loan information is written into a database of a supply chain financial block chain, the specific protection method comprises the following steps:
the method comprises the following steps: user' s
Figure DEST_PATH_IMAGE006_13A
In the zone of melting of gold in the supply chainBefore the loan information is written into the block database of the block chain network, the information protection system locks the loan information write page of the database of the supply chain financial block chain;
step two: popping up loan information on a page written with loan information and user
Figure DEST_PATH_IMAGE006_14A
The interactive communication dialog box has a traceless communication function, namely all interactive communication contents in the dialog box have no backup record;
step three: user' s
Figure DEST_PATH_IMAGE006_15A
Inputting a numerical value in the dialog box
Figure DEST_PATH_IMAGE036
；
Step four: user authentication module random generation
Figure DEST_PATH_IMAGE038
According to the correlation function
Figure DEST_PATH_IMAGE040
Calculate out
Figure DEST_PATH_IMAGE042
；
Then according to
Figure DEST_PATH_IMAGE044
Calculate out
Figure DEST_PATH_IMAGE046
And apply the same
Figure DEST_PATH_IMAGE048
Returning in the dialog box;
step five:user' s
Figure DEST_PATH_IMAGE006_16A
According to known conditions
Figure DEST_PATH_IMAGE050
And will be calculated
Figure DEST_PATH_IMAGE052
Inputting the data into a dialog box;
step six: user identity authentication module logarithm value
Figure DEST_PATH_IMAGE054
And a numerical value
Figure DEST_PATH_IMAGE056
Verifying the consistency of the data; if value of
Figure DEST_PATH_IMAGE058
And a numerical value
Figure DEST_PATH_IMAGE060
If the loan information is completely the same as the loan information of the supply chain financial block chain, the information protection system writes the loan information of the database of the supply chain financial block chain into a page to unlock; otherwise, locking is continued.
3. The method as claimed in claim 2, wherein the information protection system is provided at the user's end for protecting the loan information of the financial clients in the supply chain
Figure DEST_PATH_IMAGE006_17A
When the loan information is read from the database of the supply chain financial block chain, the specific protection method comprises the following steps:
the method comprises the following steps: user' s
Figure DEST_PATH_IMAGE006_18A
In the supply chain, the block chain is meltedWhen the loan information is read from the block database of the network, the loan information search page is locked and pops up on the search page and the user
Figure DEST_PATH_IMAGE006_19A
The interactive communication dialog box has a traceless communication function, namely all interactive communication contents in the dialog box have no backup record;
step two: user' s
Figure DEST_PATH_IMAGE006_20A
Inputting a numerical value in the dialog box
Figure DEST_PATH_IMAGE062
；
Step three: user authentication module random generation
Figure DEST_PATH_IMAGE064
According to the correlation function
Figure DEST_PATH_IMAGE066
Calculate out
Figure DEST_PATH_IMAGE068
；
Then according to
Figure DEST_PATH_IMAGE070
Calculate out
Figure DEST_PATH_IMAGE072
And apply the same
Figure DEST_PATH_IMAGE074
Returning in the dialog box;
step four: user' s
Figure DEST_PATH_IMAGE006_21A
According to known conditions
Figure DEST_PATH_IMAGE076
And will be calculated
Figure DEST_PATH_IMAGE054A
Inputting the data into a dialog box;
step five: user identity authentication module logarithm value
Figure DEST_PATH_IMAGE050A
And a numerical value
Figure DEST_PATH_IMAGE078
Verifying the consistency of the data; if value of
Figure DEST_PATH_IMAGE058A
And a numerical value
Figure DEST_PATH_IMAGE064A
If the data are completely the same, unlocking the loan information retrieval page of the database of the supply chain financial block chain by the information protection system; otherwise, locking is continued.
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CN112732832B (en) * 2021-01-06 2024-02-13 上海泰砥科技有限公司 Block chain supply chain financial supply method and system based on DID and zero knowledge proof
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