yusuke1997/dblp-id-title huggingface dataset:
Transferable Black-Box Attack Against Face Recognition With Spatial Mutable Adversarial Patch
Perceptual Image Hashing Based on Shape Contexts and Local Feature Points
The Large-Scale Crowd Behavior Perception Based on Spatio-Temporal Viscous Fluid Field
Uniform Embedding for Efficient JPEG Steganography
AnFRA: Anonymous and Fast Roaming Authentication for Space Information Network
A Portable and Stealthy Inaudible Voice Attack Based on Acoustic Metamaterials
Identifying Image Composites Through Shadow Matte Consistency
Polar-Domain Multi-User Key Generation in Near-Field Communications
A Dummy-Based Approach for Preserving Source Rate Privacy
Nonparametric Steganalysis of QIM Steganography Using Approximate Entropy
Finely Tunable Bitcuboid-Based Encryption With Exception-Free Signed Binarization for JPEG Standard
A Latent Fingerprint in the Wild Database
De 2 Trojan: Deployable Trojan Analysis Tool and Benchmark for the Machine Learning Lifecycle via Decoupling
A Security-Enhanced Alignment-Free Fuzzy Vault-Based Fingerprint Cryptosystem Using Pair-Polar Minutiae Structures
Pairwise boosted audio fingerprint
Robust Camera Model Identification Over Online Social Network Shared Images via Multi-Scenario Learning
A Residual-Driven Secure Transmission and Detection Approach Against Stealthy Cyber-Physical Attacks for Accident Prevention
Amplitude-Varying Perturbation for Balancing Privacy and Utility in Federated Learning
Threshold Password-Hardening Updatable Oblivious Key Management
Dissimilarity Gaussian Mixture Models for Efficient Offline Handwritten Text-Independent Identification Using SIFT and RootSIFT Descriptors
MTDroid: A Moving Target Defense-Based Android Malware Detector Against Evasion Attacks
An Adaptive Authenticated Data Structure With Privacy-Preserving for Big Data Stream in Cloud
General, Efficient, and Real-Time Data Compaction Strategy for APT Forensic Analysis
Minutiae Attention Network With Reciprocal Distance Loss for Contactless to Contact-Based Fingerprint Identification
Boosting 3-D-Geometric Features for Efficient Face Recognition and Gender Classification
Enhancing Covert Communication in OOK Schemes by Phase Deflection
Domain-Specific Fine-Grained Access Control for Cloud-Edge Collaborative IoT
Uncoordinated Frequency Hopping for Wireless Secrecy Against Non-Degraded Eavesdroppers
Chaos-Based Index-of-Min Hashing Scheme for Cancellable Biometrics Security
Dynamic-Hand-Gesture Authentication Dataset and Benchmark
Secret Group-Key Generation at Physical Layer for Multi-Antenna Mesh Topology
Traceable and Collision-Resilient Differential Privacy
Semantically Consistent Visual Representation for Adversarial Robustness
Secrecy Energy Efficiency Maximization in RIS-Aided Networks: Active or Nearly-Passive RIS?
Hierarchical and Shared Access Control
Private Set Intersection With Authorization Over Outsourced Encrypted Datasets
Detection of Face Spoofing Using Visual Dynamics
Face verification across age progression using discriminative methods
Watermarking Protocol for Web Context
Leveraging Shape, Reflectance and Albedo From Shading for Face Presentation Attack Detection
Reliable and Modeling Attack Resistant Authentication of Arbiter PUF in FPGA Implementation With Trinary Quadruple Response
Privacy-Aware Data Trading
A-NIDS: Adaptive Network Intrusion Detection System Based on Clustering and Stacked CTGAN
chamaeleon: Backdoor Attacks Against Vertical Federated Learning for Tabular Data
Differential Electromagnetic Attacks on a 32-bit Microprocessor Using Software Defined Radios
Secure Dynamic Searchable Symmetric Encryption With Constant Client Storage Cost
Low-Complexity Secure Beamforming With Fluid Antenna-Assisted MU-MISO System
Linking Multiple Online Identities in Criminal Investigations: A Spectral Co-Clustering Framework
Optimized Quantization in Zero Leakage Helper Data Systems
Learn to Defend: Adversarial Multi-Distillation for Automatic Modulation Recognition Models
Memory-Based PUFs are Vulnerable as Well: A Non-Invasive Attack Against SRAM PUFs
Channel-Robust RF Fingerprint Identification for Multi-Antenna 5G User Equipments
The Last Mile of Attack Investigation: Audit Log Analysis Toward Software Vulnerability Location
Soft Biometrics: Globally Coherent Solutions for Hair Segmentation and Style Recognition Based on Hierarchical MRFs
Division and Union: Latent Model Watermarking
A Comparison of Session Variability Compensation Approaches for Speaker Verification
Graphing the Truth: Harnessing Causal Insights for Advanced Multimodal Fake News Detection
A Real-Time Design Based on FPGA for Expeditious Error Reconciliation in QKD System
A Robust Reversible Watermarking Scheme Using Attack-Simulation-Based Adaptive Normalization and Embedding
Multi-Authority Attribute-Based Encryption Scheme With Access Delegation for Cross Blockchain Data Sharing
Fingerprinting Classifiers With Benign Inputs
Provably Secure Public-Key Steganography Based on Admissible Encoding
Secure and Efficient User-Centric V2C Communication for Intelligent Cyber-Physical Transportation System
Pairwise Physical Layer Secret Key Generation for FDD Systems
Scalar DC-QIM for Semifragile Authentication
Multiple-Differential Mechanism for Collision-Optimized Divide-and-Conquer Attacks
On the Security of Lattice-Based Fiat-Shamir Signatures in the Presence of Randomness Leakage
Video Query Reformulation for Near-Duplicate Detection
Unsupervised Domain Adaptation for Face Anti-Spoofing
Discriminative Multimetric Learning for Kinship Verification
On Empirical Recognition Capacity of Biometric Systems Under Global PCA and ICA Encoding
One Parameter Defense - Defending Against Data Inference Attacks via Differential Privacy
Malware Traffic Classification via Expandable Class Incremental Learning With Architecture Search
Counter JPEG Anti-Forensic Approach Based on the Second-Order Statistical Analysis
ESP Spoofing: Covert Acoustic Attack on MEMS Gyroscopes in Vehicles
BIT-TRAPS: Building Information-Theoretic Traffic Privacy Into Packet Streams
Contactless Palm Vein Recognition Using a Mutual Foreground-Based Local Binary Pattern
A Bandwidth Monitoring Strategy Under Uncertainty of the Adversary's Activity
Quaternion-Based Image Hashing for Adaptive Tampering Localization
$\mathsf{TCG}\text{-}\mathsf{IDS}$ : Robust Network Intrusion Detection via Temporal Contrastive Graph Learning
'Print and Scan' Resilient Data Hiding in Images
Cooperative Jamming Over DRL-Based Frequency Hopping Wireless Communications: A One-Leader Multi-Follower Stackelberg Game Approach
Defending False Data Injection on State Estimation Over Fading Wireless Channels
Latent Fingerprint Registration via Matching Densely Sampled Points
Adaptively Secure Identity-Based Broadcast Encryption With a Constant-Sized Ciphertext
Formal Verification of the xDAuth Protocol
A parametric correlation framework for the statistical evaluation and estimation of biometric-based classification performance in a single environment
Parallel Unlearning in Inherited Model Networks
Dynamic Event-Triggered Control for Leader-Following Consensus of Nonlinear Multi-Agent Systems Against Malicious Attacks
The Deferred Byzantine Generals Problem
Quantum hashing for multimedia
Injecting Reliable Radio Frequency Fingerprints Using Metasurface for the Internet of Things
Data Fusion and Cost Minimization for Intrusion Detection
Regulatable and Privacy-Preserving Blockchain via Anomaly Detection on Private Transactions
Reliable PLA With Array Error Features and Two-Beam Transmission in Millimeter-Wave Communication Systems
Achieving Probabilistic Anonymity in a Linear and Hybrid Randomization Model
Destination Assisted Cooperative Jamming for Wireless Physical-Layer Security
DeepReg: A Trustworthy and Privacy-Friendly Ownership Regulatory Framework for Deep Learning Models
MMNet: Multi-Collaboration and Multi-Supervision Network for Sequential Deepfake Detection
Human and Social Capital Strategies for Mafia Network Disruption
Pixel Group Trace Model-Based Quantitative Steganalysis for Multiple Least-Significant Bits Steganography
On the Individual Secrecy Capacity Regions of the General, Degraded, and Gaussian Multi-Receiver Wiretap Broadcast Channel
Augmentation Matters: A Mix-Paste Method for X-Ray Prohibited Item Detection Under Noisy Annotations
On the Linearization of Human Identification Protocols: Attacks Based on Linear Algebra, Coding Theory, and Lattices
Exposing Digital Forgeries in Interlaced and Deinterlaced Video
Fine-Grained Two-Factor Protection Mechanism for Data Sharing in Cloud Storage
Joint Intensity Transformer Network for Gait Recognition Robust Against Clothing and Carrying Status
CoAS: Composite Audio Steganography Based on Text and Speech Synthesis
ResNeXt+: Attention Mechanisms Based on ResNeXt for Malware Detection and Classification
SCR-Auth: Secure Call Receiver Authentication on Smartphones Using Outer Ear Echoes
Detection of motion-incoherent components in video streams
Software Puzzle: A Countermeasure to Resource-Inflated Denial-of-Service Attacks
A Unified Framework for Contactless Hand Verification
MaskAuct: Seller-Autonomous Auction With Bidder Anonymity and Bidding Confidentiality
Practical Threshold Multi-Factor Authentication
Investigating the Common Authorship of Signatures by Off-Line Automatic Signature Verification Without the Use of Reference Signatures
Fingerprint Recognition With Embedded Presentation Attacks Detection: Are We Ready?
From RGB to Depth: Domain Transfer Network for Face Anti-Spoofing
Random Projections of Residuals for Digital Image Steganalysis
A Dynamic Matching Algorithm for Audio Timestamp Identification Using the ENF Criterion
Multi-Task GANs for View-Specific Feature Learning in Gait Recognition
Physical-Layer Authentication
Privacy-Preserving Statistical Analysis With Low Redundancy Over Task-Relevant Microdata
Next Gen PCFG Password Cracking
Bi-Directional Center-Constrained Top-Ranking for Visible Thermal Person Re-Identification
A Zero-Latency Website Identification for QUIC Traffic Based on Feature Alignment
Probabilistic Threat Propagation for Network Security
AugSteal: Advancing Model Steal With Data Augmentation in Active Learning Frameworks
Authentication of Copy Detection Patterns: A Pattern Reliability Based Approach
Detecting Covert Channels in Computer Networks Based on Chaos Theory
On Covert Communication Performance With Outdated CSI in Wireless Greedy Relay Systems
A New Sketch Method for Measuring Host Connection Degree Distribution
Face Anti-Spoofing via Adversarial Cross-Modality Translation
Detection of Unknown Attacks Through Encrypted Traffic: A Gaussian Prototype-Aided Variational Autoencoder Framework
Toward Mobile Palmprint Recognition via Multi-View Hierarchical Graph Learning
Efficient Verifiable Databases With Insertion/Deletion Operations From Delegating Polynomial Functions
Screen-Shooting Resilient Watermarking
Privacy-Enhanced Federated Learning Against Poisoning Adversaries
Generative Steganography via Auto-Generation of Semantic Object Contours
Leveraging Ensembles and Self-Supervised Learning for Fully-Unsupervised Person Re-Identification and Text Authorship Attribution
Robust Wireless Transmission of Compressed Latent Fingerprint Images
Polarization Fingerprint-Based LoRaWAN Physical Layer Authentication
Secrecy Rate Analysis and Active Pilot Attack Detection for IRS-Aided Massive MIMO Systems
Dual-Cohesion Metric Learning for Few-Shot Hand-Based Multimodal Recognition
Building a Scalable System for Stealthy P2P-Botnet Detection
Secret Channel Training to Enhance Physical Layer Security With a Full-Duplex Receiver
Multihop Trust Evaluation Using Memory Integrity in Wireless Sensor Networks
Unsupervised Domain Adaptation Person Re-Identification: Bridged by Feature Fusion Transitional Domain
Across-Platform Detection of Malicious Cryptocurrency Accounts via Interaction Feature Learning
Differentially Private Mean-Square Output Consensus for Heterogeneous Multiagent Systems: An Asynchronous Sampled-Data Interactions Scheme
Latent Dirichlet Allocation Model Training With Differential Privacy
Face Tracking and Recognition at a Distance: A Coaxial and Concentric PTZ Camera System
$2DCrypt$ : Image Scaling and Cropping in Encrypted Domains
Enhancing Resilience in Website Fingerprinting: Novel Adversary Strategies for Noisy Traffic Environments
Attacker Location Evaluation-Based Fake Source Scheduling for Source Location Privacy in Cyber-Physical Systems
Server-Aided Public Key Encryption With Keyword Search
Toward All-Optical Layered Encryption: A Feasibility Analysis of Optical Stream Cipher
LSFM: Light Style and Feature Matching for Efficient Cross-Domain Palmprint Recognition
Puncturable Signatures and Applications in Proof-of-Stake Blockchain Protocols
Robust ENF Estimation in Contaminated Audio
Cryptomining Cannot Change Its Spots: Detecting Covert Cryptomining Using Magnetic Side-Channel
A Weak Security Notion for Visual Secret Sharing Schemes
GAZETA: GAme-Theoretic ZEro-Trust Authentication for Defense Against Lateral Movement in 5G IoT Networks
Individual Identification Based on Code-Modulated Visual-Evoked Potentials
On the Secrecy Throughput Maximization for MISO Cognitive Radio Network in Slow Fading Channels
Comments on "Random Distance Method for Generating Unimodal and Multimodal Cancelable Biometric Features"
A Game-Theoretic Analysis of Adversarial Classification
SeIoT: Detecting Anomalous Semantics in Smart Homes via Knowledge Graph
The CEO Problem With Secrecy Constraints
A Pay-per-Use Licensing Scheme for Hardware IP Cores in Recent SRAM-Based FPGAs
Optimum Pixel Expansions for Threshold Visual Secret Sharing Schemes
Diffusion Prediction and Control of Negative Information on Simplicial Complexes Using Physics-Informed Neural Networks
Kerckhoffs-Based Embedding Security Classes for WOA Data Hiding
A Reminiscence of "Mastermind": Iris/Periocular Biometrics by "In-Set" CNN Iterative Analysis
Online Signature Verification on Mobile Devices
Physical Layer Security for Visible Light Communication in Reflected Indoor Environments With Inter-Symbol Interference
Task-Driven Device Fingerprinting for Quantum Cloud Platforms via Modeling QNN Outcomes Under Noise
Dense Registration and Mosaicking of Fingerprints by Training an End-to-End Network
Face Recognition and Verification Using Photometric Stereo: The Photoface Database and a Comprehensive Evaluation
GenFace: A Large-Scale Fine-Grained Face Forgery Benchmark and Cross Appearance-Edge Learning
Fingerprinting with minimum distance decoding
Detecting Byzantine Attacks Without Clean Reference
Boundary Defense Against Cyber Threat for Power System State Estimation
Improved Differential Fault Analysis on AES Key Schedule
Forensic Detection of Fraudulent Alteration in Ball-Point Pen Strokes
FV-GAN: Finger Vein Representation Using Generative Adversarial Networks
Optimized Feature Extraction for Learning-Based Image Steganalysis
Decode-Time Forensic Watermarking of AAC Bitstreams
Answering Count Queries for Genomic Data With Perfect Privacy
Robust Visible-Infrared Person Re-Identification Based on Polymorphic Mask and Wavelet Graph Convolutional Network
Digital image source coder forensics via intrinsic fingerprints
The Steganographer is the Outlier: Realistic Large-Scale Steganalysis
On Optimal PMU Placement-Based Defense Against Data Integrity Attacks in Smart Grid
On Joint Optimization of Automatic Speaker Verification and Anti-Spoofing in the Embedding Space
Profiled Side-Channel Attack on Cryptosystems Based on the Binary Syndrome Decoding Problem
Comments on "An Efficient Privacy-Preserving Outsourced Calculation Toolkit With Multiple Keys"
High-Fidelity Face Manipulation With Extreme Poses and Expressions
Securing ARP/NDP From the Ground Up
Design and Performance Analysis of Channel Estimators Under Pilot Spoofing Attacks in Multiple-Antenna Systems
Face Sketch Synthesis in the Wild via Deep Patch Representation-Based Probabilistic Graphical Model
Robust and Secure Image Hashing via Non-Negative Matrix Factorizations
KG-IBL: Knowledge Graph Driven Incremental Broad Learning for Few-Shot Specific Emitter Identification
Non-Interactive Key Establishment for Bundle Security Protocol of Space DTNs
Exploring the Usefulness of Light Field Cameras for Biometrics: An Empirical Study on Face and Iris Recognition
Automatic secret keys from reciprocal MIMO wireless channels: measurement and analysis
Backdoor Attack on Deep Learning-Based Medical Image Encryption and Decryption Network
Model Based Separation of Overlapping Latent Fingerprints
Privacy-Preserving Federated Learning via Functional Encryption, Revisited
ENF-Based Region-of-Recording Identification for Media Signals
Dynamic Adaptation RFF Identification Method Leveraging Cognitive Representation Learning
PrivacyEAFL: Privacy-Enhanced Aggregation for Federated Learning in Mobile Crowdsensing
GapFinder: Finding Inconsistency of Security Information From Unstructured Text
An abuse-free fair contract-signing protocol based on the RSA signature
Exploring Bi-Level Inconsistency via Blended Images for Generalizable Face Forgery Detection
Attacking Recommender Systems With Plausible Profile
Establishing Trusted I/O Paths for SGX Client Systems With Aurora
Resilient System-on-Chip Designs With NoC Fabrics
Robust and Efficient Algorithms for Separating Latent Overlapped Fingerprints
Toward Robust and Effective Behavior Based User Authentication With Off-the-Shelf Wi-Fi
Physical-Layer Secret Key Agreement in Two-Way Wireless Relaying Systems
Fully Symmetrical Obfuscated Interconnection and Weak-PUF-Assisted Challenge Obfuscation Strong PUFs Against Machine-Learning Modeling Attacks
Region Generation and Assessment Network for Occluded Person Re-Identification
TrueWatch: Polygraph Examination With Smartwatches
Physical Layer Authentication Based on Channel Polarization Response in Dual-Polarized Antenna Communication Systems
Anti-Jamming Games in Multi-Band Wireless Ad Hoc Networks
On reliability and security of randomized detectors against sensitivity analysis attacks
Joint Discriminative Analysis With Low-Rank Projection for Finger Vein Feature Extraction
Forecasting Violent Extremist Cyber Recruitment
An Efficient Web Traffic Defence Against Timing-Analysis Attacks
Unexpected Information Leakage of Differential Privacy Due to the Linear Property of Queries
Restricted Black-Box Adversarial Attack Against DeepFake Face Swapping
A Mouse Dynamics Authentication System With a Recurrence Plot Image Representation and a Vision Transformer Framework
On estimation accuracy of desynchronization attack channel parameters
SIa-CBc: Sensitive Intent-Assisted and Crucial Behavior-Cognized Malware Detection Based on Human Brain Cognitive Theory
A Coalitional Cyber-Insurance Framework for a Common Platform
Protecting Sensitive Attributes by Adversarial Training Through Class-Overlapping Techniques
Data Secrecy Protection Through Information Flow Tracking in Proof-Carrying Hardware IP - Part II: Framework Automation
Channel Identification: Secret Sharing Using Reciprocity in Ultrawideband Channels
NEMO: Practical Distributed Boolean Queries With Minimal Leakage
Synchronous Byzantine Agreement With O(n) Messages and O(1) Expected Time
Intrusion Detection for Internet of Things: An Anchor Graph Clustering Approach
A SC PUF Standard Cell Used for Key Generation and Anti-Invasive-Attack Protection
Debiasing Android Malware Datasets: How Can I Trust Your Results If Your Dataset Is Biased?
DeepSBD: A Deep Neural Network Model With Attention Mechanism for SocialBot Detection
Efficient and Privacy-Preserving Similarity Query With Access Control in eHealthcare
Revisiting and Exploring Efficient Fast Adversarial Training via LAW: Lipschitz Regularization and Auto Weight Averaging
Person Re-Identification With Hierarchical Discriminative Spatial Aggregation
A Comprehensive Approach to Image Spam Detection: From Server to Client Solution
Face Verification via Learned Representation on Feature-Rich Video Frames
Finger-Knuckle Assisted Slap Fingerprint Identification System for Higher Security and Convenience
Robust Image Hashing With Weighted Saliency Map and Laplacian Eigenmaps
Physical-Layer Secrecy for OFDM Transmissions Over Fading Channels
Statistical Estimation of Malware Detection Metrics in the Absence of Ground Truth
Secure, Fast, and Energy-Efficient Outsourced Authentication for Smartphones
RiskLaine: A Probabilistic Approach for Assessing Risk in Certificate-Based Security
COTD: Reference-Free Hardware Trojan Detection and Recovery Based on Controllability and Observability in Gate-Level Netlist
SITA: Structurally Imperceptible and Transferable Adversarial Attacks for Stylized Image Generation
Digital Video Watermarking in P-Frames With Controlled Video Bit-Rate Increase
Multi-Beam Directional Modulation Synthesis Scheme Based on Frequency Diverse Array
Mining Multi-Scale Spatial-Frequency Clues for Unsupervised Intrusion Detection
Towards Extensible Detection of AI-Generated Images via Content-Agnostic Adapter-Based Category-Aware Incremental Learning
On the Relationship Between Inference and Data Privacy in Decentralized IoT Networks
Human Identification Using Palm-Vein Images
A Privacy-Preserving Framework for Large-Scale Content-Based Information Retrieval
Intrinsic Physical-Layer Authentication of Integrated Circuits
Optimal Coding and Allocation for Perfect Secrecy in Multiple Clouds
Collaborative Sampling for Partial Multi-Dimensional Value Collection Under Local Differential Privacy
Secure Transmission Against Pilot Spoofing Attack: A Two-Way Training-Based Scheme
A Customized Sparse Representation Model With Mixed Norm for Undersampled Face Recognition
AppAngio: Revealing Contextual Information of Android App Behaviors by API-Level Audit Logs
Memory Forensic Challenges Under Misused Architectural Features
Synthetic ID Card Image Generation for Improving Presentation Attack Detection
A Precoding Perturbation Method in Geometric Optimization: Exploring Manifold Structure for Privacy and Efficiency
Enhancing the Trust of Internet Routing With Lightweight Route Attestation
Video Anomaly Search in Crowded Scenes via Spatio-Temporal Motion Context
Squirrel-Cage Local Binary Pattern and Its Application in Video Anomaly Detection
Loop-Back Mechanism-Based Physical-Layer Secret Key Generation in FDD System Under Hardware Impairments
User Behavior Fingerprinting With Multi-Item-Sets and Its Application in IPTV Viewer Identification
Towards Private Learning on Decentralized Graphs With Local Differential Privacy
URadar: Discovering Unrestricted File Upload Vulnerabilities via Adaptive Dynamic Testing
Lightweight Radio Frequency Fingerprint Identification Scheme for V2X Based on Temporal Correlation
On Channel-Aware Secure HARQ-IR
PERM: Streamlining Cloud Authorization With Flexible and Scalable Policy Enforcement
High Dynamic Range Image Watermarking Robust Against Tone-Mapping Operators
Multi-Key Similar Data Search on Encrypted Storage With Secure Pay-Per-Query
Symphony of Speeds: Harmonizing Classic McEliece Cryptography With GPU Innovation
Updatable Private Set Intersection With Forward Privacy
VSecNN: Verifiable and Privacy-Preserving Neural Network Inference in Cloud Service
Shuffle-sum: coercion-resistant verifiable tallying for STV voting
Secure Degrees of Freedom of MIMO X-Channels With Output Feedback and Delayed CSIT
Multiclass Classification-Based Side-Channel Hybrid Attacks on Strong PUFs
Keyless Authentication in a Noisy Model
Security Assurance for System-on-Chip Designs With Untrusted IPs
Security-Aware Resource Allocation With Delay Constraint for NOMA-Based Cognitive Radio Network
A Cryptographic Protocol for Efficient Mutual Location Privacy Through Outsourcing in Indoor Wi-Fi Localization
Revealing the Secrets of Radio Embedded Systems: Extraction of Raw Information via RF
Secure Cooperation in Autonomous Mobile Ad-Hoc Networks Under Noise and Imperfect Monitoring: A Game-Theoretic Approach
Identifying Cross-User Privacy Leakage in Mobile Mini-Apps at a Large Scale
Physical Layer Network Security in the Full-Duplex Relay System
Selfish Mining Time-Averaged Analysis in Bitcoin: Is Orphan Reporting an Effective Countermeasure?
Local Patterns of Gradients for Face Recognition
Toward Secure Weighted Aggregation for Privacy-Preserving Federated Learning