公开(公告)号：US11683189B2

公开(公告)日：2023-06-20

申请号：US16824063

申请日：2020-03-19

Applicant: Jinan University

Inventor： Jian Weng ,  Yue Zhang ,  Jiasi Weng ,  Ming Li ,  Weiqi Luo

IPC: H04L29/06 ,  H04L9/32 ,  H04L9/08 ,  H04L9/40 ,  H04W84/18 ,  H04L9/00

CPC classification number: H04L9/3297 ,  H04L9/0825 ,  H04L9/0847 ,  H04L9/3236 ,  H04L9/3247 ,  H04L63/0421 ,  H04W84/18 ,  H04L9/50

Abstract: With the popularity of Blockchain comes grave security-related concerns. Achieving privacy and traceability simultaneously remains an open question. Efforts have been made to address the issues, while they may subject to specific scenarios. The present disclosure proposes a method, a system, and a device for maintaining privacy and traceability of a Blockchain-based system. The method includes: registering in a Blockchain-based system; transmitting a message from a transmitter T to a receiver R via an anonymous network, after a registration request of the transmitter T has been approved and storing message transmission data generated during a message transmission process in a Blockchain; and performing an identity disclosure by using the message transmission data when the message is detected to be false. The anonymous network may transmit the message by onion routing. The solution proposed by the present disclosure can achieve traceability and privacy for a Blockchain-based system simultaneously.

公开(公告)号：US11265722B2

公开(公告)日：2022-03-01

申请号：US16824076

申请日：2020-03-19

Applicant: Jinan University

Inventor： Jian Weng ,  Zhijian Shao ,  Yue Zhang ,  Ming Li ,  Jiasi Weng ,  Yongdong Wu ,  Weiqi Luo

IPC: H04W12/06 ,  H04W12/55 ,  H04W84/18 ,  H04W12/0433 ,  H04W4/80 ,  H04W4/70

Abstract: A method for pairing a plurality of devices in the context of internet of things (IoT), including: connecting power supplies of the plurality of devices to a same power source, wherein the plurality of devices includes an initiator device and a responder device; synchronizing clocks of the initiator device and the responder device; switching the power source off and on for a plurality of times n; recording time stamps S(T)={T1, T2, T3, . . . Tn} corresponding to time stamps when the initiator device and the responder device switch off in response to switching off of the power source; and performing the pairing of the initiator device and the responder device if each of the initiator device time stamps is within a predefined delay tolerance of a corresponding time stamp of the responder device time stamps, otherwise rejecting the pairing of the initiator device and the responder device.

公开(公告)号：US11223487B2

公开(公告)日：2022-01-11

申请号：US16824093

申请日：2020-03-19

Applicant: Jinan University

Inventor： Jian Weng ,  Ming Li ,  Jiasi Weng ,  Yue Zhang ,  Anjia Yang ,  Weiqi Luo

IPC: H04L9/32 ,  H04L9/08

Abstract: A method of digital forensics based on blockchain technology and a fine-grained access control scheme, using a finite state machine (FSM) based on smart contracts to manage a digital certificate, where a law enforcement agency ends the warrant request to a court and upon approval of the request collects the forensics data by obtaining the master secret key for accessing the forensic data from a plurality of authorities. The forensics data are encrypted by D-KP-ABE (Distributed Key Police Attribute-based Encryption) with privacy-preserved access policy. The secret sharings are required to form the decryption key for accessing the forensics data. The secret sharings are distributed among the plurality of authorized authorities so that no individual authority has a complete master key by itself. Each state of the FSM requires digital signature(s) of at least one specific authorized authority for transitioning to a next state.

公开(公告)号：US11836616B2

公开(公告)日：2023-12-05

申请号：US16702786

申请日：2019-12-04

Applicant: Jinan University

Inventor： Jian Weng ,  Jiasi Weng ,  Ming Li ,  Yue Zhang ,  Jilian Zhang ,  Weiqi Luo

IPC: G06N3/08 ,  G06F16/23 ,  G06F21/60 ,  G06N3/04 ,  H04L9/08 ,  H04L9/00 ,  G06Q10/10 ,  G06Q30/018

CPC classification number: G06N3/08 ,  G06F16/2379 ,  G06F21/602 ,  G06N3/04 ,  G06Q10/10 ,  G06Q30/0185 ,  H04L9/085 ,  G06Q2220/00 ,  H04L9/50

Abstract: Disclosed is a method for constructing an auditable and privacy-preserving collaborative deep learning platform based on a blockchain-empowered incentive mechanism, which allows trainers of multiple similar models to cooperate for training deep learning models while protecting confidentiality and auditing correctness of shared parameters. The invention has the following technical effects. Firstly, the encryption method used by model trainers protects the confidentiality of sharing parameters; furthermore, the updated parameters are decrypted through the cooperation of all participants, which reduces the possible disclosure of parameters. Secondly, the encrypted parameters are stored in the blockchain, and are only available to participants and authorized miners who are responsible to update parameters. Thirdly, the blockchain-based incentive mechanism guarantees the validity of the parameters, where collaborative trainers need to pay deposit when uploading parameters at the beginning and then the shared parameters can be validated. Concretely, if the parameters are invalid, the deposit would be forfeited.