Stanford Security Lunch

Welcome to Security Lunch. We host speakers from both industry and academia to give talks related to applied cryptography, and system and network security.
If you're interested in attending, please sign up for the mailing list to receive updates about upcoming talks. There is an option to join virtually on Zoom.
If you're interested in giving a talk, we would love to have you! Please find more details in the About page.
You can find the upcoming and past talks for the current quarter below. We meet every Wednesday, 12 pm in Gates 415.

Summer 2024

Upcoming

Abstract: The InterPlanetary File System (IPFS) is a peer-to-peer network for storing data in a distributed file system, hosting over 190,000 peers spanning 152 countries. Despite its prominence, the privacy properties that IPFS offers to peers are severely limited. Any query within the network leaks to other peers the content for which a peer is querying. In this talk, I will present our system, Peer2PIR, which addresses this problem across three functionalities (peer routing, provider advertisements, and content retrieval), ultimately empowering peers to privately navigate and retrieve content in the network. We argue that private information retrieval (PIR) is the most suitable tool for our task. Our work highlights and addresses novel challenges inherent to integrating PIR into distributed systems. I will present our new, private protocols and demonstrate that they incur minimal overheads. I will also outline a systematic comparison of state-of-art PIR protocols in the context of distributed systems, which may be of independent interest.

Past