Risk data sharing method and system based on secure multi-party computing and block chain

A secure multi-party computing and data sharing technology, applied in the field of risky data sharing based on secure multi-party computing and blockchain, can solve problems such as user privacy leakage

Active Publication Date: 2020-09-01
BUBI BEIJING NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem that the sharing of sensitive information in the blockchain environment in the background technology will directly or indirectly lead to the leakage of user privacy, the

Method used

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  • Risk data sharing method and system based on secure multi-party computing and block chain
  • Risk data sharing method and system based on secure multi-party computing and block chain
  • Risk data sharing method and system based on secure multi-party computing and block chain

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Embodiment Construction

[0141] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0142] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention discloses a risk data sharing method and system based on secure multi-party computing and a blockchain, and the method comprises the steps: obtaining a user node ID, calculating a hash value of the user node ID, and querying the historical loan information of a user node according to the hash value; acquiring a historical loan amount private certificate of the user node, and calculating an overdue amount private certificate and an overdue duration private certificate by utilizing a private key of the user node and the acquired historical loan information; constructing a user nodeloan overdue amount multi-party security certificate and an overdue duration multi-party security certificate; sharing the processed loan information obtained by query to a request node. According tothe method, risk control data alliance co-construction of multiple Internet financial institutions is achieved through secure multi-party calculation, and distributed real-time secure calculation isperformed under the condition that original data is not delivered, so that the freshness, effectiveness and accuracy of the data are ensured, and therefore, business and data security is ensured to the greatest extent and supervision requirements are met.

Description

technical field [0001] The present invention relates to the field of information technology, and more specifically, to a risk data sharing method and system based on secure multi-party computing and blockchain. Background technique [0002] Data is the cornerstone to support the entire Internet financial risk control. Mutual Finance Company collects, organizes, and cleans customer information, and uses big data technologies such as user portraits, data mining, and deep learning to identify customers' fraud risks. In order to reduce the overdue bad debt rate of risk control for financial companies, complete user data will obviously provide great help, and at the same time, it will also have guiding significance for users to differentiate and adapt to different risk interest rate products. [0003] As a distributed ledger technology, blockchain technology has had a profound impact on the financial field and drives a new round of technological and application changes. Against ...

Claims

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Application Information

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IPC IPC(8): G06F21/62G06F21/64G06F16/27G06F16/176G06Q40/02H04L9/06H04L9/00H04L9/32
CPCG06F21/6245G06F21/64G06F16/27G06F16/176H04L9/0643H04L9/008H04L9/3247G06Q40/03
Inventor 蒋海商松朱建国旷凯赵正涌刘建章
Owner BUBI BEIJING NETWORK TECH CO LTD
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