公开(公告)号：US12155675B2

公开(公告)日：2024-11-26

申请号：US17551441

申请日：2021-12-15

Applicant: Tsinghua University

Inventor： Ke Xu ,  Fan Yang ,  Bo Wu ,  Qi Li ,  Jianping Wu

IPC: H04L9/40 ,  H04L45/00

Abstract: A verification method for fast source and path embedded with random authentication is provided. The method includes: generating a corresponding verification structure for an expected path according to a predetermined path strategy, embedding different m pieces of fragment information randomly selected with same possibility from the verification structure for the expected path to a header of a data packet to be transmitted in a data flow, and transmitting the data packet to be transmitted with the embedded fragment information to a next hop of routing node of the expected path, performing a verification on the received data packet by the respective intermediate routing node on the expected path, and forwarding the data packet to the next routing node when the verification passes, performing verification on the received data packet by the data flow destination, performing a parsing verification evaluation on the expected path when the verification passes.

公开(公告)号：US11954592B2

公开(公告)日：2024-04-09

申请号：US17012494

申请日：2020-09-04

Applicant: Tsinghua University

Inventor： Ke Xu ,  Zhichao Zhang ,  Bo Wu ,  Qi Li ,  Songsong Xu

IPC: G06N20/00 ,  G06N3/04 ,  G06N3/08 ,  H04L9/06

CPC classification number: G06N3/08 ,  G06N3/04 ,  G06N20/00 ,  H04L9/0637

Abstract: The disclosure provides a collaborative deep learning method and a collaborative deep learning apparatus. The method includes: sending an instruction for downloading a global model to a plurality of user terminals; receiving a set of changes from each user terminal; storing the set of changes; recording a hash value of the set of changes into a blockchain; obtaining a storage transaction number from the blockchain for the hash value of the set of changes; sending the set of changes and the storage transaction number to the plurality of user terminals; receiving the set of target user terminals from the blockchain; updating the current parameters of the global model based on sets of changes corresponding to the set of target user terminals; and returning the sending the instruction, to update the global model until the global model meets a preset condition.

公开(公告)号：US12218911B2

公开(公告)日：2025-02-04

申请号：US17490435

申请日：2021-09-30

Applicant: Tsinghua University

Inventor： Ke Xu ,  Bo Wu ,  Jianping Wu ,  Qi Li

IPC: H04L9/30 ,  H04L9/40

Abstract: A security guarantee method and apparatus for a full life cycle of a packet are disclosed. The method includes: in response to a data packet generated at a communication source, performing by a distributed network node, authenticity verification on a source address and an identity of the data packet; in a network forwarding process of the data packet, performing by the distributed network node, collaborative sampling on the data packet and performing credibility verification on related routing behaviors; in response to the data packet reaching a destination end, verifying by the destination end, the legality of the data packet.

公开(公告)号：US12224999B2

公开(公告)日：2025-02-11

申请号：US17544935

申请日：2021-12-08

Applicant: Tsinghua University

Inventor： Ke Xu ,  Jianping Wu ,  Xiaoliang Wang ,  Qi Li ,  Ziqiang Wang ,  Songtao Fu

IPC: H04L9/40 ,  H04L9/00 ,  H04L9/32

Abstract: A method for hierarchical Internet trust sharing includes dividing a network into intra-domain and inter-domain layers based on a management domain; performing authentication on a central certificate through a CA and publishing the central certificate to a blockchain; managing by the central node, a certificate of each communication node based on a real address; collecting by the central node, temporary data reported by each communication node every preset time interval, generating a trust evaluation value of each communication node based on the temporary data and forming a format file from the trust evaluation values; generating by the central node, a file digest from the format file at each preset time interval, and publishing the file digest verified by central nodes in the inter-domain to the blockchain; and automatically deleting by the blockchain, data from the time interval 1 to the time interval (N-T-1) to retain blockchain header information.

公开(公告)号：US12058143B2

公开(公告)日：2024-08-06

申请号：US17665735

申请日：2022-02-07

Applicant: Tsinghua University

Inventor： Ke Xu ,  Fan Yang ,  Bo Wu ,  Qi Li ,  Jianping Wu

IPC: H04L9/40 ,  H04L9/08 ,  H04L9/32

CPC classification number: H04L63/12 ,  H04L63/0435 ,  H04L63/08 ,  H04L63/166 ,  H04L63/20 ,  H04L9/0869 ,  H04L9/3239 ,  H04L9/3271 ,  H04L63/0442

Abstract: A dynamic path verification method based on reorganization of authentication fragments is proposed. The method includes: sending an initial expected path verification structure to a data packet sending end via a guarantee service node, and sending notification information to the respective routing nodes on an initial expected path; after updating the initial expected path to a new expected path, inserting the new expected path verification structure into a subsequent data packet to be sent, verifying the data packet by other nodes except a migration node, and sending the subsequent data packet to be sent to a next hop of routing node; performing the parsing verification on the received data packet by the migration node.