Public verification truth value determination method based on privacy protection
A technology for public verification and determination methods, applied in user identity/authority verification and key distribution, can solve problems such as security loopholes and high computing overhead, and achieve the effect of reducing computing overhead and communication overhead and increasing flexibility
Pending Publication Date: 2022-05-31
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
[0007] The purpose of the present invention is to address technical defects such as security loopholes and high computational overhead in the existing technology, and to simultaneously solve technical problems such as privacy protection in truth discovery and ensure that the platform can correctly execute the truth discovery algorithm, and creatively propose a method based on Privacy-preserving publicly verifiable truth-value determination method
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[0080] Such as figure 1 As shown, a privacy-preserving public verification method for determining the truth value includes collecting sensory data, corresponding to figure 1 "1" in ; weight update, corresponding to figure 1 "2", "3", and "4" in ; the truth value is updated, corresponding to figure 1 "5" and "6" in; verification stage, corresponding to figure 1 "7" and "8" in the four stages. figure 1 The initialization of the system and the key negotiation process of each user are omitted.
[0081] Taxi-hailing business is a travel application scenario of the Internet of Vehicles. The taxi-hailing platform can create an APP that integrates payment, posting tasks, and receiving tasks. The driver can register as a user (task executor) of the taxi-hailing platform by installing the APP on the device in the car. A research institution can also serve as a user (task requester) of the platform to issue perception tasks on the platform. For example, in order to conduct research...
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The invention relates to a public verification truth value determination method based on privacy protection. In the truth value discovery stage, a task executor and a platform use a threshold-based Paillier homomorphic encryption system, and truth value discovery is completed on the premise of protecting privacy data of the task executor. Meanwhile, the task executor generates homomorphic hash values related to data of the task executor and corresponding random numbers and commitment values in the truth value discovery stage, the commitment values are sent to the platform, the homomorphic hash values and the random numbers are reserved, and the platform sends the commitment values to the verifier. In the verification stage, a task executor sends all homomorphic hash values and random numbers to a verifier through the platform, the verifier verifies commitment values received from the platform through the random numbers and the homomorphic hash values, and the platform is prevented from tampering with data. After verification, an individual with computing power can use computing data disclosed by the platform to verify a truth value discovery result. According to the method, under the condition that the privacy of the user is protected, the calculation overhead and communication overhead of the user and the platform are reduced.
Description
technical field [0001] The invention relates to a method for publicly verifying the correctness of calculation task results, in particular to a method for publicly verifying the correctness of truth result results based on privacy protection, and belongs to the fields of verifiable calculation, privacy protection technology and truth discovery calculation. [0002] technical background [0003] In recent years, with the rapid increase of mobile smart devices and the rapid development of Internet of Things technology and communication technology, the Internet of Everything has become closer and closer. On this basis, a business model called crowd sensing was developed. This model makes use of the mobility, perceptibility and data collection of mobile smart devices, so that an individual (task initiator) can issue a sensing task to the mobile smart device owner (task executor) on the relevant platform, and the task executor immediately Upload its device perception and generate...
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IPC IPC(8): H04L9/00H04L9/08H04L9/32
CPCH04L9/008H04L9/0869H04L9/3239
Inventor 徐畅饶鸿洲祝烈煌张川陈宇鹏
Owner BEIJING INSTITUTE OF TECHNOLOGYGY