Proactive Coded Caching Scheme for D2D Networks

2026-01-20

AI Summary

This work addresses a critical gap in existing device-to-device (D2D) coded caching schemes, which typically overlook the risk of file privacy leakage due to adversarial access to cached content and struggle to simultaneously ensure cache privacy and transmission security. To resolve this, the paper proposes a secure coded caching scheme tailored for D2D networks that jointly guarantees information-theoretic file privacy during the caching phase and communication security during delivery. Notably, this is the first scheme in D2D coded caching to achieve both cache privacy and secure transmission concurrently. Under the assumptions of large file sizes and sufficient cache capacity, the proposed approach attains order-optimal communication load performance, thereby offering a robust and efficient solution for privacy-preserving and secure content delivery in D2D systems.

Technology Category

• Machine Learning: Privacy
• Application Domains: Security
• Philosophy and Ethics of AI: Privacy & Security

Application Category

• Security and Privacy: Applications of cryptography
• Responsible Web: Data and user privacy-enhancing technologies for the Web
• User Modeling, Personalization and Recommendation: User privacy protection in personalized systems

Abstract

Coded caching and device-to-device (D2D) communication are two effective techniques for alleviating network traffic. Secure transmission and file privacy have also become critical concerns in these domains. However, prevailing coded caching schemes typically assume that a user's cached content is inaccessible to others, overlooking the risk of file privacy leakage due to attacks targeting the cache itself. In this paper, we propose a secure coded caching scheme for D2D networks that guarantees both file privacy and secure delivery. We demonstrate that the proposed scheme achieves order-optimal performance when the file size is sufficiently large and the cache memory is ample.

Problem

• coded caching
• device-to-device communication
• file privacy
• secure transmission
• cache security

Innovation

• secure coded caching
• device-to-device networks
• file privacy
• secure delivery
• order-optimal performance