CN107330678A - It is a kind of to hide the method that scattered loan value obtains loan summation based on what additive homomorphism was encrypted - Google Patents
It is a kind of to hide the method that scattered loan value obtains loan summation based on what additive homomorphism was encrypted Download PDFInfo
- Publication number
- CN107330678A CN107330678A CN201710416641.9A CN201710416641A CN107330678A CN 107330678 A CN107330678 A CN 107330678A CN 201710416641 A CN201710416641 A CN 201710416641A CN 107330678 A CN107330678 A CN 107330678A
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- Prior art keywords
- loan
- encrypted
- numerical value
- sent
- value
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Classifications
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- 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
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/02—Payment architectures, schemes or protocols involving a neutral party, e.g. certification authority, notary or trusted third party [TTP]
- G06Q20/023—Payment architectures, schemes or protocols involving a neutral party, e.g. certification authority, notary or trusted third party [TTP] the neutral party being a clearing house
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/0442—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply asymmetric encryption, i.e. different keys for encryption and decryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/008—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols involving homomorphic encryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
- H04L9/083—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
-
- 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
- G06Q2220/00—Business processing using cryptography
Abstract
The invention discloses a kind of method for hiding scattered loan value acquisition loan summation encrypted based on additive homomorphism, mechanism requests obtain the amount of the loan in other mechanisms, using own private key to signature, third-party platform is together sent to together with own public key, ask to be sent to other mechanisms again, if there are the loan numerical value of main body in other mechanisms, loan numerical value is encrypted using the public key of mechanism and is sent to third-party platform；Third-party platform is received and mechanism is sent to after the encrypted value of mechanism, merging, and mechanism is decrypted using the private key of itself, so as to obtain the total value of scattered loan.The inventive method introduces homomorphic encryption algorithm and semi trusted third party, third-party platform do not possess private key can not ciphertext data obtain concrete numerical value, party in request is sent to after ciphertext is merged, party in request using private key decrypt obtain be numerical value and, the concrete numerical value of each offer mechanism can not be known, so as to ensure the safety and privacy of data.
Description
Technical field
It is specifically a kind of to be obtained based on the scattered loan value of hiding that additive homomorphism is encrypted the present invention relates to field of data encryption
The method for summation of providing a loan.
Background technology
In today of rapid economic development, there is increasing people to pass through bank loan to alleviate the economic pressures of oneself.
It is personal to need to submit personal material while loan, and bank or mechanism also can querying individual reference situation, so that it is guaranteed that
The situation and security provided a loan or made loans.For example：When a mechanism X wish to obtain some main body S other mechanisms (such as Y,
Z ...) loan ceiling when, other mechanisms do not want to allow mechanism X to know loan numerical value of the main body S in mechanism, and method is each machine
Main body S is given third-party institution T by structure in the loan numerical value of mechanism, after the numerical value of each mechanism is added by T, by numerical value and friendship
Give mechanism X, mechanism X only to obtain numerical value summation, it is impossible to know the concrete numerical value of each mechanism, but make third party in this way
Mechanism T has but known all numerical value, if allow T also can not any numerical information, now then need to use safer secrecy
Method.
The content of the invention
It is an object of the invention to provide a kind of hiding scattered loan value acquisition loan summation encrypted based on additive homomorphism
Method, to solve the problems mentioned in the above background technology.
To achieve the above object, the present invention provides following technical scheme：
A kind of to hide the method that scattered loan value obtains loan summation based on what additive homomorphism was encrypted, each mechanism X, Y, Z possess
Public private key pair (Px, Kx), (Py, Ky), (Pz, the Kz) of unique mark itself, are designated as P (A) using public key P encryption information A, use
Private key K carries out signature to information A and is designated as K (A)；Main body S is a in mechanism Y loan numerical value, is b in mechanism Z loan numerical value,
The step of then mechanism X obtains main body S loan ceiling is as follows：
(1) mechanism X request obtains the amounts of the loan of the S in other mechanisms, public together with itself using own private key to S signature Kx (S)
Key Px is together sent to third-party platform T；
(2) third-party platform T sends the requests to other mechanisms；
(3) other mechanisms are got after request, if there are main body S loan numerical value in other mechanisms, and loan numerical value is used into mechanism X
Public key be encrypted and be sent to third-party platform T；
(4) third-party platform T receives mechanism Y and mechanism Z encrypted value Px (a) and Px (b), and encrypted value result is merged into
Px (a) ⊕ Px (b), are sent to mechanism X；
(5) mechanism X is got after Px (a) ⊕ Px (b), is decrypted using the private key of itself, so as to obtain the total of scattered loan
Volume.
It is used as further scheme of the invention：The third-party platform T connects each mechanism in real time.
It is used as further scheme of the invention：In the step (4), a+b=Kx (Px (a) ⊕ Px (b)), P (x) ⊕ P
(y)=P (x+y).
Compared with prior art, the beneficial effects of the invention are as follows：
In the inventive method, a homomorphic encryption algorithm and semi trusted third party are introduced, each side uses itself concrete numerical value
Third-party platform is issued after party in request's public key encryption, third-party platform does not possess private key can not ciphertext data acquisition concrete numerical value.
Third-party platform is sent to party in request after ciphertext is merged using homomorphic encryption algorithm, party in request is using what private key decrypted acquisition
Numerical value and, it is impossible to know it is each offer mechanism concrete numerical value, it is ensured that the safety and privacy of data.
Brief description of the drawings
Fig. 1 is the schematic diagram of the inventive method.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The each mechanism of X, Y, Z possesses the public private key pair (Px, Kx) of unique mark itself, (Py, Ky), and (Pz, Kz) uses public affairs
Key P encryption information A is designated as P (A), and carrying out signature to information A using private key K is designated as K (A).
A kind of additive homomorphism cryptographic calculation is obtained, that is, there is efficient algorithm ⊕ so that P (x+y)=P (x) ⊕ P (y), x+y
=K (P (x) ⊕ P (y)) is set up.And third-party platform T, connect each mechanism.
Main body S is a in mechanism Y loan numerical value, is b in mechanism Z loan numerical value, then mechanism X obtains main body S loan
The step of total value, is as follows：
(1) mechanism X request obtains the amounts of the loan of the S in other mechanisms, public together with itself using own private key to S signature Kx (S)
Key Px is together sent to third-party platform T；
(2) third-party platform T sends the requests to other mechanisms；
(3) other mechanisms are got after request, if there are main body S loan numerical value in other mechanisms, and loan numerical value is used into mechanism X
Public key be encrypted and be sent to third-party platform T；
(4) third-party platform T receives mechanism Y and mechanism Z encrypted value Px (a) and Px (b), using efficient algorithm ⊕, will add
Close numerical result merges into Px (a) ⊕ Px (b), is sent to mechanism X；
(5) mechanism X is got after Px (a) ⊕ Px (b), is decrypted using the private key of itself, a+b=Kx (Px (a) ⊕ Px
(b)), so that obtain numerical value and a+b.
In the inventive method, a homomorphic encryption algorithm and semi trusted third party are introduced, each side is by itself concrete numerical value
Third-party platform is issued after use demand side's public key encryption, third-party platform does not possess private key can not the specific number of ciphertext data acquisition
Value.Third-party platform is sent to party in request after ciphertext is merged using homomorphic encryption algorithm, party in request is decrypted using private key and obtained
Be numerical value and, it is impossible to know it is each offer mechanism concrete numerical value, it is ensured that the safety and privacy of data.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Claims (3)
1. a kind of hide the method that scattered loan value obtains loan summation based on what additive homomorphism was encrypted, it is characterised in that each
Mechanism X, Y, Z possess public private key pair (Px, Kx), (Py, Ky), (Pz, the Kz) of unique mark itself, use public key P encryption information A
P (A) is designated as, carrying out signature to information A using private key K is designated as K (A)；Main body S is a in mechanism Y loan numerical value, mechanism Z's
Loan numerical value is b, then the step of mechanism X obtains main body S loan ceiling is as follows：
(1) mechanism X request obtains the amounts of the loan of the S in other mechanisms, public together with itself using own private key to S signature Kx (S)
Key Px is together sent to third-party platform T；
(2) third-party platform T sends the requests to other mechanisms；
(3) other mechanisms are got after request, if there are main body S loan numerical value in other mechanisms, and loan numerical value is used into mechanism X
Public key be encrypted and be sent to third-party platform T；
(4) third-party platform T receives mechanism Y and mechanism Z encrypted value Px (a) and Px (b), and encrypted value result is merged into
Px (a) ⊕ Px (b), are sent to mechanism X；
(5) mechanism X is got after Px (a) ⊕ Px (b), is decrypted using the private key of itself, so as to obtain the total of scattered loan
Volume.
2. according to claim 1 hide the method that scattered loan value obtains loan summation based on what additive homomorphism was encrypted,
Characterized in that, the third-party platform T connects each mechanism in real time.
3. according to claim 1 hide the method that scattered loan value obtains loan summation based on what additive homomorphism was encrypted,
Characterized in that, in the step (4), a+b=Kx (Px (a) ⊕ Px (b)), P (x) ⊕ P (y)=P (x+y).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710416641.9A CN107330678A (en) | 2017-06-06 | 2017-06-06 | It is a kind of to hide the method that scattered loan value obtains loan summation based on what additive homomorphism was encrypted |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710416641.9A CN107330678A (en) | 2017-06-06 | 2017-06-06 | It is a kind of to hide the method that scattered loan value obtains loan summation based on what additive homomorphism was encrypted |
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| Publication Number | Publication Date |
|---|---|
| CN107330678A true CN107330678A (en) | 2017-11-07 |
Family
ID=60193831
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| CN201710416641.9A Pending CN107330678A (en) | 2017-06-06 | 2017-06-06 | It is a kind of to hide the method that scattered loan value obtains loan summation based on what additive homomorphism was encrypted |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109284627A (en) * | 2018-09-10 | 2019-01-29 | 中山大学 | A kind of reference prestige method and device based on block chain intelligence contract |
| CN109614809A (en) * | 2018-12-13 | 2019-04-12 | 税友软件集团股份有限公司 | A kind of electronic bill information ciphering method, device and computer readable storage medium |
| CN111932364A (en) * | 2020-08-11 | 2020-11-13 | 杭州增信信息技术有限公司 | Puff financial system for protecting business secret |
| CN113591131A (en) * | 2021-08-20 | 2021-11-02 | 南京可信区块链与算法经济研究院有限公司 | Loan total calculation method for protecting user privacy |
| CN113674077A (en) * | 2021-07-23 | 2021-11-19 | 华南理工大学 | Consumption credit risk prevention method, system, equipment and storage medium |
| CN113688644A (en) * | 2021-07-07 | 2021-11-23 | 南通大学 | Active radio frequency identification method and system supporting parallel anti-collision |
| CN113836587A (en) * | 2021-11-29 | 2021-12-24 | 南京可信区块链与算法经济研究院有限公司 | Financial institution joint wind control method and system for protecting data privacy |
| CN115801457A (en) * | 2023-02-01 | 2023-03-14 | 上海金仕达软件科技股份有限公司 | Encryption transmission method for obtaining group internal risk data sum |
| CN116976822A (en) * | 2023-08-03 | 2023-10-31 | 广东企企通科技有限公司 | Report automatic generation method, device, computer equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102970143A (en) * | 2012-12-13 | 2013-03-13 | 中国科学技术大学苏州研究院 | Method for securely computing index of sum of held data of both parties by adopting addition homomorphic encryption |
| CN104521178A (en) * | 2012-04-17 | 2015-04-15 | 华为技术有限公司 | Method and system for secure multiparty cloud computation |
| US20160352710A1 (en) * | 2015-05-31 | 2016-12-01 | Cisco Technology, Inc. | Server-assisted secure exponentiation |
| CN106549749A (en) * | 2016-12-06 | 2017-03-29 | 杭州趣链科技有限公司 | A kind of block chain method for secret protection encrypted based on additive homomorphism |
-
2017
- 2017-06-06 CN CN201710416641.9A patent/CN107330678A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104521178A (en) * | 2012-04-17 | 2015-04-15 | 华为技术有限公司 | Method and system for secure multiparty cloud computation |
| CN102970143A (en) * | 2012-12-13 | 2013-03-13 | 中国科学技术大学苏州研究院 | Method for securely computing index of sum of held data of both parties by adopting addition homomorphic encryption |
| US20160352710A1 (en) * | 2015-05-31 | 2016-12-01 | Cisco Technology, Inc. | Server-assisted secure exponentiation |
| CN106549749A (en) * | 2016-12-06 | 2017-03-29 | 杭州趣链科技有限公司 | A kind of block chain method for secret protection encrypted based on additive homomorphism |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109284627A (en) * | 2018-09-10 | 2019-01-29 | 中山大学 | A kind of reference prestige method and device based on block chain intelligence contract |
| CN109284627B (en) * | 2018-09-10 | 2022-02-08 | 中山大学 | Credit credit method and device based on block chain intelligent contract |
| CN109614809A (en) * | 2018-12-13 | 2019-04-12 | 税友软件集团股份有限公司 | A kind of electronic bill information ciphering method, device and computer readable storage medium |
| CN111932364A (en) * | 2020-08-11 | 2020-11-13 | 杭州增信信息技术有限公司 | Puff financial system for protecting business secret |
| CN113688644A (en) * | 2021-07-07 | 2021-11-23 | 南通大学 | Active radio frequency identification method and system supporting parallel anti-collision |
| CN113674077A (en) * | 2021-07-23 | 2021-11-19 | 华南理工大学 | Consumption credit risk prevention method, system, equipment and storage medium |
| CN113591131A (en) * | 2021-08-20 | 2021-11-02 | 南京可信区块链与算法经济研究院有限公司 | Loan total calculation method for protecting user privacy |
| CN113591131B (en) * | 2021-08-20 | 2024-02-13 | 南京可信区块链与算法经济研究院有限公司 | Loan amount calculation method for protecting user privacy |
| CN113836587A (en) * | 2021-11-29 | 2021-12-24 | 南京可信区块链与算法经济研究院有限公司 | Financial institution joint wind control method and system for protecting data privacy |
| CN115801457A (en) * | 2023-02-01 | 2023-03-14 | 上海金仕达软件科技股份有限公司 | Encryption transmission method for obtaining group internal risk data sum |
| CN116976822A (en) * | 2023-08-03 | 2023-10-31 | 广东企企通科技有限公司 | Report automatic generation method, device, computer equipment and storage medium |
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Application publication date: 20171107 |