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PRNU Extraction from Stabilized Video:A Patch Maybe Better than a Bunch

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computer Systems science & Engineering 2021年第1期36卷 189-200页

作者： Bin Ma Yuanyuan Hu Jian Li Chunpeng Wang Meihong Yang Yang Zheng Qilu University of Technology(shandong Academy of sciences) Shandong Provincial Key Laboratory of Computer NetworksJinan250353China shandong computer science center Shandong Provincial Key Laboratory of Computer NetworksJinan250014China University of Connecticut MansfieldCT06269USA

This paper presents an algorithm to solve the problem of Photo-Response Non-Uniformity(PRNU)noise facing stabilized *** stabilized video undergoes in-camera processing like rolling shutter ***,misalignment exists between the PRNU noises in the adjacent frames owing to the global and local frame registration performed by the in-camera *** misalignment makes the reference PRNU noise and the test PRNU noise unable to extract and match *** design a computing method of maximum likelihood estimation algorithm for extracting the PRNU noise from stabilized video ***,unlike most prior arts tending to match the PRNU noise in whole frame,we propose a new patch-based matching strategy,aiming at reducing the influence from misalignment of frame the PRNU *** extracting the reference PRNU noise and the test PRNU noise,this paper adopts the reference and the test PRNU overlapping patch-based *** is different from the traditional matching *** paper conducts different experiments on 224 stabilized videos taken by 13 smartphones in the VISION *** area under curve of the algorithm proposed in this paper is 0.841,which is significantly higher than 0.805 of the whole frame matching in the traditional *** results show good performance and effectiveness the proposed strategy by comparing with the prior arts.

关键词： Photo-response non-uniformity(PRNU) stabilized video frames maximum likelihood estimation patch

Steganalysis and improvement of a quantum steganography protocol via a GHZ_4 state

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Chinese Physics B 2013年第6期22卷 199-202页

作者：徐淑奖陈秀波钮心忻杨义先 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)

Quantum steganography that utilizes the quantum mechanical effect to achieve the purpose of information hiding is a popular topic of quantum information. Recently, E1 Allati et al. proposed a new quantum steganography using the GHZ4 state. Since all of the 8 groups of unitary transformations used in the secret message encoding rule change the GHZ4 state into 6 instead of 8 different quantum states when the global phase is not considered, we point out that a 2-bit instead of a 3-bit secret message can be encoded by one group of the given unitary transformations. To encode a 3-bit secret message by performing a group of unitary transformations on the GHZ4 state, we give another 8 groups of unitary transformations that can change the GHZ4 state into 8 different quantum states. Due to the symmetry of the GHZ4 state, all the possible 16 groups of unitary transformations change the GHZ4 state into 8 different quantum states, so the improved protocol achieves a high efficiency.

关键词： quantum steganography GHZ4 entangled state quantum cryptography quantum communication

Cryptanalysis of PRIMATEs

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science China(Information sciences) 2020年第1期63卷 130-139页

作者： Yanbin LI Meiqin WANG Wenqing LIU Wei WANG key laboratory of Cryptologic Technology and Information Security Ministry of EducationShandong University shandong provincial key laboratory of computer networks

PRIMATEs is a family of authenticated encryption design submitted to competition for authenticated encryption: security, applicability, and robustness. The three modes of operation in PRIMATEs family are: APE, HANUMAN, GIBBON with security levels: 80, 120 bits. APE is robust despite the nonce misusing. In this study, we revise the algebraic model and find new integral distinguishers for both PRIMATE permutation and its inverse permutation. Moreover, we construct a zero-sum distinguisher for full12-round PRIMATE-80/120 permutation with the 2;/2;complexity, improving over previous work. We also perform an integral attack on 8-round finalization of APE-80/120 with 2;chosen messages. The key recovery process is optimized using the FFT technique presented by Todo and Aoki. Our work is the best attack against APE, demonstrating the practical attack on 8-round finalization of APE-80. The new integral distinguishers apply to create forgeries on 5/6-round finalization of APE and HANUMAN that require2;/2;chosen messages, which is the first forgery attack against APE and HANUMAN.

关键词： PRIMATEs APE HANUMAN integral distinguisher key recovery attack forgery

A Novel Quantum Covert Channel Protocol Based on Any Quantum Secure Direct Communication Scheme

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Communications in Theoretical Physics 2013年第5期59卷 547-553页

By analyzing the basic properties of unitary transformations used in a quantum secure direct communication (QSDC) protocol, we show the main idea why a covert channel can be established within any QSDC channel which employs unitary transformations to encode information. On the basis of the fact that the unitary transformations used in a QSDC protocol are secret and independent, a novel quantum covert channel protocol is proposed to transfer secret messages with unconditional security. The performance, including the imperceptibility, capacity and security of the proposed protocol are analyzed in detail.

关键词： quantum information hiding quantum covert channel quantum cryptography quantum communication

An Improved Quantum Information Hiding Protocol Based on Entanglement Swapping of χ-type Quantum States

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Communications in Theoretical Physics 2016年第6期65卷 705-710页

作者：徐淑奖陈秀波王连海丁青艳张淑慧 shandong provincial key laboratory of computer networks Shandong Computer Science Center (National Supercomputer Center in Jinan) Information Security center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications

In 2011, Qu et al. proposed a quantum information hiding protocol based on the entanglement swapping of χ-type quantum states. Because a χ-type state can be described by the 4-particle cat states which have good symmetry,the possible output results of the entanglement swapping between a given χ-type state and all of the 16 χ-type states are divided into 8 groups instead of 16 groups of different results when the global phase is not considered. So it is difficult to read out the secret messages since each result occurs twice in each line(column) of the secret messages encoding rule for the original protocol. In fact, a 3-bit instead of a 4-bit secret message can be encoded by performing two unitary transformations on 2 particles of a χ-type quantum state in the original protocol. To overcome this defect, we propose an improved quantum information hiding protocol based on the general term formulas of the entanglement swapping among χ-type states.

关键词： quantum communication quantum information hiding χ-type quantum state entanglement swapping

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

A Sharding Scheme Based on Graph Partitioning Algorithm for Public Blockchain

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computer Modeling in Engineering & sciences 2024年第6期139卷 3311-3327页

作者： Shujiang Xu Ziye Wang Lianhai Wang Miodrag J.Mihaljevi′c Shuhui Zhang Wei Shao Qizheng Wang key laboratory of Computing Power network and Information Security Ministry of EducationShandong Computer Science CenterQilu University of Technology(Shandong Academy of Sciences)Jinan250014China shandong provincial key laboratory of computer networks Shandong Fundamental Research Center for Computer ScienceJinan250014China Mathematical Institute The Serbian Academy of Sciences and ArtsBelgrade11000Serbia

Blockchain technology,with its attributes of decentralization,immutability,and traceability,has emerged as a powerful catalyst for enhancing traditional industries in terms of optimizing business ***,transaction performance and scalability has become the main challenges hindering the widespread adoption of *** to its inability to meet the demands of high-frequency trading,blockchain cannot be adopted in many *** improve the transaction capacity,researchers have proposed some on-chain scaling technologies,including lightning networks,directed acyclic graph technology,state channels,and shardingmechanisms,inwhich sharding emerges as a potential scaling ***,excessive cross-shard transactions and uneven shard workloads prevent the sharding mechanism from achieving the expected *** paper proposes a graphbased sharding scheme for public blockchain to efficiently balance the transaction *** crossshard transactions and evening-out workloads among shards,the scheme reduces transaction confirmation latency and enhances the transaction capacity of the ***,the scheme can achieve a high-frequency transaction as well as a better blockchain *** results show that the scheme effectively reduces the cross-shard transaction ratio to a range of 35%-56%and significantly decreases the transaction confirmation latency to 6 s in a blockchain with no more than 25 shards.

关键词： Blockchain sharding graph partitioning algorithm

Planning the obstacle-avoidance trajectory of mobile anchor in 3D sensor networks

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science China(Information sciences) 2015年第10期58卷 109-118页

作者： SHU MingLei CUI HuanQing WANG YingLong WANG Cheng-Xiang School of Information science and Engineering Shandong University shandong provincial key laboratory of computer networks Shandong Computer Science Center (National Supercomputer Center in Jinan) College of Information science and Engineering Shandong University of Science and Technology Institute of Sensors Signals and Systems School of Engineering & Physical SciencesHeriot-Watt University

Localization plays an important role in many applications of wireless sensor networks. Recently,mobile anchor assisted localization methods become promising, and the moving trajectory planning of anchor is an interesting and basic issue in these methods. In this paper, an obstacle-avoidance trajectory planning method for three-dimensional wireless sensor networks is proposed. After dividing the network into grids, a depth-firstsearch algorithm with greedy strategy is proposed to get the approximately shortest path, and a trigonal function based localization method is presented to estimate the positions of the sensor nodes. Simulations show that this method can obtain almost the optimal path and localize almost all the sensor nodes.

关键词： wireless sensor networks three-dimension localization mobile anchor path planning

Neural network-Based State Estimation for Nonlinear Systems With Denial-of-Service Attack Under Try-Once-Discard Protocol

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IEEE/CAA Journal of Automatica Sinica 2024年第10期11卷 2182-2184页

作者： Xueli Wang Shangwei Zhao Ming Yang Xin Wang Xiaoming Wu the key laboratory of Computing Power network and Information Security Ministry of EducationShandong Computer Science CenterQilu University of Technology(Shandong Academy of Sciences)Jinan 250014 shandong provincial key laboratory of computer networks Shandong Fundamental Research Center for Computer ScienceJinan 250014China Department of Automation Shanghai Jiao Tong UniversityShanghai 200240China

Dear Editor,This letter deals with state estimation issues of discrete-time nonlinear systems subject to denial-of-service(DoS)attacks under the try-once-discard(TOD)*** specifically,to reduce the communication burden,a TOD protocol with novel update rules on protocol weights is designed for scheduling measurement *** addition,unknown nonlinear functions vulnerable to DoS attacks are considered due to the openness and vulnerability of the network.

关键词： Service DoS service