Cryptography in hierarchical coded caching: System model and cost analysis

Behrouz Zolfaghari, Vikrant Singh, Brijesh Kumar Rai, Khodakhast Bibak*, Takeshi Koshiba


研究成果: Article査読

4 被引用数 (Scopus)


The idea behind network caching is to reduce network traffic during peak hours via transmitting frequently-requested content items to end users during off-peak hours. However, due to limited cache sizes and unpredictable access patterns, this might not totally eliminate the need for data transmission during peak hours. Coded caching was introduced to further reduce the peak hour traffic. The idea of coded caching is based on sending coded content which can be decoded in different ways by different users. This allows the server to service multiple requests by transmitting a single content item. Research works regarding coded caching traditionally adopt a simple network topology consisting of a single server, a single hub, a shared link connecting the server to the hub, and private links which connect the users to the hub. Building on the results of Sengupta et al. (IEEE Trans. Inf. Forensics Secur., 2015), we propose and evaluate a yet more complex system model that takes into consideration both throughput and security via combining the mentioned ideas. It is demonstrated that the achievable rates in the proposed model are within a constant multiplicative and additive gap with the minimum secure rates.

出版ステータスPublished - 2021 11月

ASJC Scopus subject areas

  • 情報システム
  • 数理物理学
  • 物理学および天文学(その他)
  • 電子工学および電気工学


「Cryptography in hierarchical coded caching: System model and cost analysis」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。