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IEEE Transactions on Artificial Intelligence 2025年

作者： Wang, Yang Li, Xue Chen, Siguang Nanjing University of Posts and Telecommunications Jiangsu Engineering Research Center of Communication and Network Technology Nanjing China Women’s Hospital of Nanjing Medical University Nanjing Women and Children’s Healthcare Hospital Department of Dermatology Nanjing China Hohai University College of Computer Science and Software Engineering Nanjing China

Existing federated unlearning methods to eliminate the negative impact of malicious clients on the global model are influenced by unreasonable assumptions (e.g., an auxiliary dataset) or fail to balance model performance and efficiency. To overcome these shortcomings, we propose a malicious clients and contribution co-aware federated unlearning (MCC-Fed) method. Specifically, we introduce a method for detecting malicious clients to reduce their impact on the global model. Next, we design a contribution-aware metric, which accurately quantifies the negative impact of malicious clients on the global calculating their historical contribution ratio. Then, based on this metric, we propose a novel federated unlearning method in which benign clients use the contribution-aware metric as a regularization term to unlearn the influence of malicious clients, and restoring model performance. Experimental results demonstrate that our method effectively addresses the issue of excessive unlearning during the unlearning process, improves the efficiency of performance recovery, and enhances robustness against malicious clients. © 2020 IEEE.

关键词： Federated learning federated unlearning malicious clients

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Fingerprint Liveness Detection Based on Multi-Scale LPQ and PCA

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China Communications 2016年第7期13卷 60-65页

作者： Chengsheng Yuan Xingming Sun Rui Lv School of Computer and Software Nanjing University of Information Science & Technology Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science and Technology

Fingerprint authentication system is used to verify users' identification according to the characteristics of their ***,this system has some security and privacy *** example,some artificial fingerprints can trick the fingerprint authentication system and access information using real users' ***,a fingerprint liveness detection algorithm needs to be designed to prevent illegal users from accessing privacy *** this paper,a new software-based liveness detection approach using multi-scale local phase quantity(LPQ) and principal component analysis(PCA) is *** feature vectors of a fingerprint are constructed through multi-scale *** technology is also introduced to reduce the dimensionality of the feature vectors and gain more effective ***,a training model is gained using support vector machine classifier,and the liveness of a fingerprint is detected on the basis of the training *** results demonstrate that our proposed method can detect the liveness of users' fingerprints and achieve high recognition *** study also confirms that multi-resolution analysis is a useful method for texture feature extraction during fingerprint liveness detection.

关键词： fingerprint liveness detection wavelet transform local phase quantity principal component analysis support vector machine

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Steganalysis of LSB Matching Using Characteristic Function Moment of Pixel Differences

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China Communications 2016年第7期13卷 66-73页

作者： Xianyi Chen Guangyong Gao Dandan Liu Zhihua Xia Jiangsu Engineering Center of Network Monitoring Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment TechnologySchool of Computer and SoftwareNanjing University of Information Science & Technology School of Information Science & Technology Jiujiang University

Nowadays,many steganographic tools have been developed,and secret messages can be imperceptibly transmitted through public *** paper concentrates on steganalysis against spatial least significant bit(LSB) matching,which is the prototype of many advanced information hiding *** existing algorithms deal with steganalysis problems by using the dependencies between adjacent *** another aspect,this paper calculates the differences among pixel pairs and proves that the histogram of difference values will be smoothed by stego *** calculate the difference histogram characteristic function(DHCF) and deduce that the moment of DHCFs(DHCFM) will be diminished after stego bits are hidden in the ***,we compute the DHCFMs as the discriminative *** calibrate the features by decreasing the influence of image content on them and train support vector machine classifiers based on the calibrated *** results demonstrate that the DHCFMs calculated with nonadjacent pixels are helpful to detect stego messages hidden by LSB matching.

关键词： information hiding steganalysis pixel differences nonadjacent pixels SVM

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A Novel Steganography Algorithm Based on Instance Segmentation

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computers, Materials & Continua 2020年第4期63卷 183-196页

作者： Ruohan Meng Qi Cui Zhili Zhou Chengsheng Yuan Xingming Sun School of Computer and Software Nanjing University of Information Science and TechnologyNanjing210044China Jiangsu Engineering Centre of Network Monitoring Nanjing210044China Department of Electrical and Computer Engineering University of WindsorWindsorCanada

Information hiding tends to hide secret information in image area where is rich texture or high frequency,so as to transmit secret information to the recipient without affecting the visual quality of the image and arousing *** take advantage of the complexity of the object texture and consider that under certain circumstances,the object texture is more complex than the background of the image,so the foreground object is more suitable for steganography than the *** the basis of instance segmentation,such as Mask R-CNN,the proposed method hides secret information into each object's region by using the masks of instance segmentation,thus realizing the information hiding of the foreground object without *** method not only makes it more efficient for the receiver to extract information,but also proves to be more secure and robust by experiments.

关键词： Steganography object detection mask R-CNN irregular region

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Attacks and Improvement of Quantum Sealed-Bid Auction with EPR Pairs

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Communications in Theoretical Physics 2014年第6期61卷 686-690页

作者：刘文杰王芳季赛瞿治国王小军 Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science & Technology School of Computer and Software Nanjing University of Information Science & Technology School of Electronic Engineering Dublin City University

Recently, an experimentally feasible three-party quantum sealed-bid auction protocol based on EPR pairs [Z.Y. Wang, Commun. Theor. Phys. 54 （2010） 997] was proposed. However, this study points out Wang＇s protocol cannot resist some internal bidders＇ attacks, such as the Twiee-CNOT attack, the collusion attack. A malicious bidder can launch the Twice-CNOT attack to obtain the other＇s bid, or the dishonest auctioneer may collude with one bidder and help him/her win the action by changing his/her bid. For preventing against these attacks, a simple solution by using the QKD-based message encryption and a post-confirmation mechanism by adopting the hash function are proposed.

关键词： quantum sealed-bid auction EPR pairs twice-CNOT attack collusion attack improvement

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Twice-Hadamard-CNOT attack on Li et al.＇s fault-tolerant quantum private comparison and the improved scheme

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Frontiers of physics 2015年第2期10卷 73-78页

作者：季赛王芳刘文杰袁晓敏 Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science & Technology Nanjing 210044 China School of Computer and Software Nanjing University of Information Science & Technology Nanjing 210044 China

Recently, Li et al. presented a two-party quantum private comparison scheme using Greenberger-- Horne-Zeitinger （GHZ） states and error-correcting code （ECC） lint. J. Theor. Phys. 52, 2818 （2013）], claiming it is fault-tolerant and could be performed in a non-ideal scenario. However, there ex- ists a fatal loophole in their private comparison scheme under a special attack, namely the twice- Hadamard-CNOT attack. Specifically, a malicious party may intercept the other party＇s particles and execute Hadamard operations on the intercepted particles as well as on his or her own particles. Then, the malicious party could sequentially perform a controlled-NOT （CNOT） operation between intercepted particles and the auxiliary particles, as well as between his or her own particles and the auxiliary particles prepared in advance. By measuring the auxiliary particles, the secret input will be revealed to the malicious party without being detected. For resisting this special attack, a feasible improved scheme is proposed by introducing a permutation operator before the third party （TP） sends the particle sequences to each participant.

关键词： quantum private comparison GHZ state twice-Hadamard-CNOT attack improvedscheme

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Cryptanalysis and Improvement of Quantum Private Comparison Protocol Based on Bell Entangled States

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Communications in Theoretical Physics 2014年第8期61卷 210-214页

作者：刘文杰刘超陈汉武李志强刘志昊 Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science & Technology School of Computer and Software Nanjing University of Information Science & Technology School of Computer Science and Engineering Southeast University College of Information Engineering Yangzhou University

Recently, Liu et al. [Commun. Theor. Phys. 57(2012) 583] proposed a quantum private comparison protocol based on entanglement swapping of Bell states, which aims to securely compare the equality of two participants' information with the help of a semi-honest third party(TP). However, the present study points out there is a fatal loophole in Liu et al.'s protocol, and TP can make Bell-basis measurement to know all the participants' secret inputs without being detected. To fix the problem, a simple solution, which uses one-time eavesdropper checking with decoy photons instead of twice eavesdropper checking with Bell states, is demonstrated. Compared with the original protocol,it not only reduces the Bell states consumption but also simplifies the protocol steps.

关键词： quantum private comparison Bell states entanglement swapping TP’s measurement attack improvement

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Attribute-Based Access Control Scheme with Efficient Revocation in Cloud Computing

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China Communications 2016年第7期13卷 92-99页

作者： Zhihua Xia Liangao Zhang Dandan Liu Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science & Technology School of Computer and Software Nanjing University of Information Science & Technology Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology Nanjing University of Information Science & Technology

Attribute-based encryption(ABE) supports the fine-grained sharing of encrypted *** some common designs,attributes are managed by an attribute authority that is supposed to be fully *** concept implies that the attribute authority can access all encrypted data,which is known as the key escrow *** addition,because all access privileges are defined over a single attribute universe and attributes are shared among multiple data users,the revocation of users is inefficient for the existing ABE *** this paper,we propose a novel scheme that solves the key escrow problem and supports efficient user ***,an access controller is introduced into the existing scheme,and then,secret keys are generated corporately by the attribute authority and access ***,an efficient user revocation mechanism is achieved using a version key that supports forward and backward *** analysis proves that our scheme is secure and efficient in user authorization and revocation.

关键词： access control ABE efficient revocation removing escrow cloud computing

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An enhanced grouping proof for multiple rfid readers and tag groups

International Journal of Control and Automation

引用

International Journal of Control and Automation 2014年第12期7卷 239-246页

作者： Shen, Jian Tan, Haowen Wang, Yang Ji, Sai Wang, Jin Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science and Technology Nanjing China Jiangsu Technology and Engineering Center of Meteorological Sensor Network Nanjing University of Information Science and Technology Nanjing China School of Computer and Software Nanjing University of Information Science and Technology Nanjing China

RFID authentication on large numbers of tags or tag groups has attracted many researchers' attention as an extension of initial one-or-two-tags scenarios. Due to demands of RFID application in supply chain, various proofs are proposed in the purpose of solving existing problems of grouping tags identification. However, it is proved that verifiers in these proofs are not aware of abnormal relating devices instantly, which may cause both security and technical risks and lie heavy upon identification of the problematic tags and readers. In this paper, we propose an enhanced grouping proof for multiple RFID readers and tag groups, according to which the verifier is able to cope with multiple readers and tag groups simultaneously and know the detailed status of the problematic tags. In addition, privacy protection is provided by offering mutual authentication between the readers and tags. Moreover, it is hard for the malicious tags to pass the verification in the proposed proof. © 2014 SERSC.

关键词： Supply chains

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A Privacy-Preserving Image Retrieval Based on AC-Coefficients and Color Histograms in Cloud Environment

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computers, Materials & Continua 2019年第1期58卷 27-43页

作者： Zhihua Xia Lihua Lu Tong Qiu H.J.Shim Xianyi Chen Byeungwoo Jeon Jiangsu Engineering Centre of Network Monitoring Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment TechnologySchool of Computer and SoftwareNanjing University of Information Science&TechnologyNanjing210044China College of Information&Communication Engineering Sungkyunkwan UniversityKorea

Content based image retrieval(CBIR)techniques have been widely deployed in many applications for seeking the abundant information existed in *** to large amounts of storage and computational requirements of CBIR,outsourcing image search work to the cloud provider becomes a very attractive option for many owners with small ***,owing to the private content contained in images,directly outsourcing retrieval work to the cloud provider apparently bring about privacy problem,so the images should be protected carefully before *** paper presents a secure retrieval scheme for the encrypted images in the YUV color *** this scheme,the discrete cosine transform(DCT)is performed on the Y *** resulting DC coefficients are encrypted with stream cipher technology and the resulting AC coefficients as well as other two color components are encrypted with value permutation and position *** the image owner transmits the encrypted images to the cloud *** receiving a query trapdoor form on query user,the server extracts AC-coefficients histogram from the encrypted Y component and extracts two color histograms from the other two color *** similarity between query trapdoor and database image is measured by calculating the Manhattan distance of their respective ***,the encrypted images closest to the query image are returned to the query user.

关键词： Image retrieval AC-coefficients histogram color histogram discrete cosine transform

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