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.

翻译：编码缓存与设备间（D2D）通信是缓解网络流量的两种有效技术。安全传输与文件隐私性也已成为这些领域的关键关切。然而，主流的编码缓存方案通常假设用户的缓存内容无法被他人访问，忽视了缓存本身遭受攻击导致文件隐私泄露的风险。本文提出一种面向D2D网络的安全编码缓存方案，该方案同时保障文件隐私性与传输安全性。我们证明，当文件规模足够大且缓存容量充足时，所提方案能够实现阶次最优的性能。