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FL-EASGD:Federated Learning Privacy Security Method Based on Homomorphic Encryption

Computers, Materials & Continua 2024年第5期79卷 2361-2373页

作者： Hao Sun xiubo chen Kaiguo Yuan Information Security Center State Key Laboratory ofNetworking and Switching TechnologyBeijing University of Posts and TelecommunicationsBeijing100876China

Federated learning ensures data privacy and security by sharing models among multiple computing nodes instead of plaintext ***,there is still a potential risk of privacy leakage,for example,attackers can obtain the original data through model inference ***,safeguarding the privacy of model parameters becomes *** proposed solution involves incorporating homomorphic encryption algorithms into the federated learning ***,the existing federated learning privacy protection scheme based on homomorphic encryption will greatly reduce the efficiency and robustness when there are performance differences between parties or abnormal *** solve the above problems,this paper proposes a privacy protection scheme named Federated Learning-Elastic Averaging Stochastic Gradient Descent(FL-EASGD)based on a fully homomorphic encryption ***,this paper introduces the homomorphic encryption algorithm into the FL-EASGD scheme to preventmodel plaintext leakage and realize privacy security in the process ofmodel ***,this paper designs a robust model aggregation algorithm by adding time variables and constraint coefficients,which ensures the accuracy of model prediction while solving performance differences such as computation speed and node anomalies such as downtime of each *** addition,the scheme in this paper preserves the independent exploration of the local model by the nodes of each party,making the model more applicable to the local data ***,experimental analysis shows that when there are abnormalities in the participants,the efficiency and accuracy of the whole protocol are not significantly affected.

关键词： Federated learning homomorphic encryption privacy security stochastic gradient descent

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Multi-party blind quantum computation protocol with mutual authentication in network

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Science China(Information Sciences) 2021年第06期64卷 158-171页

作者： Rui-Ting SHAN xiubo chen Kai-Guo YUAN Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications

Blind quantum computation(BQC) can ensure a client with limited quantum capability safely delegates computing tasks to a remote quantum server. In order to resist attacks from ignoring identity authentication in BQC protocols, it is necessary to guarantee the legality of both clients and servers in a multi-party BQC network. So we propose a multi-party BQC protocol involving three phases to distribute shared keys and authenticate identities. Firstly, by using the advantages of measurement device independent quantum key distribution(MDI-QKD), the registered client and the assigned server could share the initial key safely in registration phase. Secondly, with the help of semi-honest certificate authority(CA), mutual identity authentication phase realizes the two-way authentication from both sides through the shared key simultaneously. Thirdly, in the blind quantum computing phase, a registered client can complete his computing task by just measuring the qubits from the assigned server rather than preparing the qubits. Moreover,combined with first-in-first-out(FIFO) principle, clients' authentication and blind quantum computing can be processed in parallel. The protocol can also be applied in other multi-party BQC protocols with the universality of resource states. Compared with other BQC protocols, the reliability of the protocol with identity authentication is guaranteed, and the efficiency will be significantly reflected in real experiments.

关键词： blind quantum computation mutual identity authentication load balancer semi-trust CA quantum network

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A blind quantum signature protocol using the GHZ states

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Science China(Physics,Mechanics & Astronomy) 2013年第9期56卷 1636-1641页

作者： WANG MingMing chen xiubo YANG YiXian Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications State Key Laboratory of Information Security(Institute of Information Engineering Chinese Academy of Sciences)

Recently,some blind quantum signature(BQS) protocols have been *** the previous schemes have security and efficiency *** on the entangled Greenberger-Horne-Zeilinger(GHZ) states,a new weak BQS protocol is *** with some existing schemes,our protocol has 100% ***,the protocol is simple and easy to *** security of the protocol is guaranteed by the correlation of the GHZ particles held by each *** our protocol,the signatory is kept blind from the content of the *** to the security analysis,the signatory cannot disavowal his/her signature while the signature cannot be forged by others.

关键词： blind quantum signature GHZ state efficiency security

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控释肥颗粒群仿真接触参数标定与试验

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农业机械学报 2024年第6期55卷 80-90页

作者：张宏建陈修波李宏立田园范国强许珺烁刘双喜王金星山东农业大学机械与电子工程学院泰安271018 山东省农业装备智能化工程实验室泰安271018 山东省园艺机械与装备重点实验室泰安271018

接触参数影响控释肥颗粒离散元仿真结果。为了精准模拟控释肥颗粒力学行为与运动规律,本文基于离散元法对控释肥颗粒的接触参数进行标定与试验。首先,建立控释肥离散元基础模型,并利用台架和仿真试验相结合的方法,在EDEM中对控释肥颗粒... 详细信息

接触参数影响控释肥颗粒离散元仿真结果。为了精准模拟控释肥颗粒力学行为与运动规律,本文基于离散元法对控释肥颗粒的接触参数进行标定与试验。首先,建立控释肥离散元基础模型,并利用台架和仿真试验相结合的方法,在EDEM中对控释肥颗粒与PVC板之间接触参数进行标定。其次,通过碰撞弹跳试验、斜面滑移试验和斜面滚动试验测得控释肥颗粒与PVC板之间的碰撞恢复系数、静摩擦因数和滚动摩擦因数分别为0.539、0.507和0.105。最后,通过堆积试验、最陡爬坡试验和正交旋转组合试验,得到控释肥颗粒间的碰撞恢复系数、静摩擦因数和滚动摩擦因数分别为0.38、0.25和0.09,并通过无底圆筒提升试验和排肥台架试验进行验证。试验结果表明,堆积角实际值与仿真结果的相对误差为1.54%,排肥量实际值与仿真结果4种转速下的相对误差分别为4.38%、4.23%、4.41%、4.36%,所标定的控释肥接触参数精准有效,可为控释肥离散元仿真提供数据和模型支撑。

关键词：控释肥离散元法接触参数标定试验堆积角

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苹果颗粒离散元接触参数标定与仿真试验

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农业工程学报 2024年第12期40卷 66-76页

作者：张宏建韩欣杨化伟陈修波赵光泽孙经伟孙林林王金星山东农业大学机械与电子工程学院泰安271018 山东省农业机械科学研究院济南252100 山东省园艺机械与装备重点实验室泰安271018

为精准确定红富士、花牛和黄元帅苹果的接触参数,该研究基于离散元法对3种苹果颗粒的仿真模型进行接触参数标定试验。首先,创建3种苹果的离散元填充模型,并通过电子秤、万能试验机等试验设备,确定其本征参数。其次,通过碰撞弹跳试验、... 详细信息

为精准确定红富士、花牛和黄元帅苹果的接触参数,该研究基于离散元法对3种苹果颗粒的仿真模型进行接触参数标定试验。首先,创建3种苹果的离散元填充模型,并通过电子秤、万能试验机等试验设备,确定其本征参数。其次,通过碰撞弹跳试验、斜面滑移试验和斜面滚动试验,得到红富士、花牛和黄元帅苹果与亚克力板的碰撞恢复系数分别为0.473、0.432和0.466;与亚克力板的静摩擦系数分别为0.435、0.536和0.519;与亚克力板的滚动摩擦系数分别为0.007 7、0.013 8和0.008 8。最后,通过堆积角试验、最陡爬坡试验确定二次回归正交旋转组合试验,得到红富士、花牛和黄元帅同种苹果间的碰撞恢复系数分别为0.487、0.348和0.469;静摩擦系数分别为0.584、0.869和0.644;滚动摩擦系数分别为0.084、0.096和0.093。试验结果表明,红富士、花牛和黄元帅苹果仿真试验与物理试验的休止角相对误差分别为5.95%、6.55%、8.67%。研究结果可为苹果物理特性和低损采收技术研究提供理论依据和模型支撑。

关键词：离散元模型苹果接触参数标定与试验堆积角

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High-efficiency quantum steganography based on the tensor product of Bell states

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Science China(Physics,Mechanics & Astronomy) 2013年第9期56卷 1745-1754页

作者： XU ShuJiang chen xiubo NIU XinXin YANG YiXian Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications Shandong Provincial Key Laboratory of Computer Network Shandong Computer Science Center State Key Laboratory of Information Security Institute of Information EngineeringChinese Academy of Sciences

In this paper,we first propose a hidden rule among the secure message,the initial tensor product of two Bell states and the final tensor product when respectively applying local unitary transformations to the first particle of the two initial Bell states,and then present a high-efficiency quantum steganography protocol under the control of the hidden *** the proposed quantum steganography scheme,a hidden channel is established to transfer a secret message within any quantum secure direct communication(QSDC) scheme that is based on 2-level quantum states and unitary *** secret message hiding/unhiding process is linked with the QSDC process only by unitary *** accurately describe the capacity of a steganography scheme,a quantitative measure,named embedding efficiency,is introduced in this *** performance analysis shows that the proposed steganography scheme achieves a high efficiency as well as a good ***,it is shown that this scheme can resist all serious attacks including the intercept-resend attack,measurement-resend attack,auxiliary particle attack and even the Denial of Service *** improve the efficiency of the proposed scheme,the hidden rule is extended based on the tensor product of multiple Bell states.

关键词： quantum steganography embedding efficiency quantum secure direct communication tensor product Bell state

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Rational Non-Hierarchical Quantum State Sharing Protocol

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Computers, Materials & Continua 2019年第2期58卷 335-347页

作者： Zhao Dou Gang Xu xiubo chen Kaiguo Yuan Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and TelecommunicationsBeijing100876China School of Cyberspace Security Beijing University of Posts and TelecommunicationsBeijing100876China

Rational participants want to maximize their *** protocol with rational participants will be more realistic than the protocol with honest,semi-honest and dishonest *** research the rational non-hierarchical quantum state sharing in this *** steps of some known quantum state sharing protocol are *** on these steps,a new rational protocol is *** means that lots of common protocols could be modified to rational *** protocol is widely *** show that the proposed protocol is rational and *** is also all-win for ***,number of deceiving agents is considered to redefine the utilities of agents.

关键词： Quantum secret sharing rational protocol general steps

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Quantum network coding for multi-unicast problem based on 2D and 3D cluster states

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Science China(Information Sciences) 2016年第4期59卷 5-19页

作者： Jing LI xiubo chen Xingming SUN Zongpeng LI Yixian YANG Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications Department of Computer Science University of Calgary School of Computer and Software Nanjing University of Information Science & Technology

We mainly consider quantum multi-unicast problem over directed acyclic network, where each source wishes to transmit an independent message to its target via bottleneck channel. Taking the advantage of global entanglement state 2D and 3D cluster states, these problems can be solved efficiently. At first, a universal scheme for the generation of resource states among distant communication nodes is provided. The corresponding between cluster and bigraph leads to a constant temporal resource cost. Furthermore, a new approach based on stabilizer formalism to analyze the solvability of several underlying quantum multi-unicast networks is presented. It is found that the solvability closely depends on the choice of stabilizer generators for a given cluster state. And then, with the designed measurement basis and parallel measurement on intermediate nodes, we propose optimal protocols for these multi-unicast sessions. Also, the analysis reveals that the resource consumption involving spatial resources, operational resources and temporal resources mostly reach the lower bounds.

关键词： quantum information network coding multi-unicast cluster state stabilizer formalism

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Probabilistic quantum teleportation of shared quantum secret

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Chinese Physics B 2022年第9期31卷 196-201页

作者： Hengji Li Jian Li xiubo chen School of Artificial Intelligence Beijing University of Posts and TelecommunicationsBeijing 100876China School of Cyberspace Security Beijing University of Posts and TelecommunicationsBeijing 100876China The Laboratory of Cryptography of Zhejiang Province Hangzhou 311121China Quantum Technology Laboratory and Applied Mechanics Group University of MilanMilan 20133Italy

Very recently,Lee et *** a secure quantum teleportation protocol to transfer shared quantum secret between multiple parties in a network[***.124060501(2020)].This quantum network is encoded with a maximally entangled GHZ *** this paper,we consider a partially entangled GHZ state as the entanglement channel,where it can achieve,probabilistically,unity fidelity transfer of the *** kinds of strategies are *** arises when an auxiliary particle is introduced and a general evolution at any receiver's location is then *** other one involves performing a single generalized Bell-state measurement at the location of any *** could allow the receivers to recover the transmitted state with a certain probability,in which only the local Pauli operators are performed,instead of introducing an auxiliary *** addition,the successful probability is provided,which is determined by the degree of entanglement of the partially multipartite entangled ***,the proposed protocol is robust against the bit and phase flip noise.

关键词： probabilistic quantum teleportation shared quantum secret partially entangled GHZ state

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Robust QKD-based private database queries based on alternative sequences of single-qubit measurements

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Science China(Physics,Mechanics & Astronomy) 2017年第12期60卷 1-11页

作者： YuGuang Yang ZhiChao Liu xiubo chen YiHua Zhou WeiMin Shi Faculty of Information Technology Beijing University of Technology Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications

Quantum channel noise may cause the user to obtain a wrong answer and thus misunderstand the database holder for existing QKD-based quantum private query(QPQ) protocols. In addition, an outside attacker may conceal his attack by exploiting the channel noise. We propose a new, robust QPQ protocol based on four-qubit decoherence-free(DF) states. In contrast to existing QPQ protocols against channel noise, only an alternative fixed sequence of single-qubit measurements is needed by the user(Alice) to measure the received DF states. This property makes it easy to implement the proposed protocol by exploiting current technologies. Moreover, to retain the advantage of flexible database queries, we reconstruct Alice's measurement operators so that Alice needs only conditioned sequences of single-qubit measurements.

关键词： quantum cryptography quantum private query decoherence-free states collective noise

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