My profile, blog, and tools I built.https://myl7.org/https://myl7.org/posts/p2rag/https://myl7.org/posts/p2rag/Unlike existing systems, P²RAG avoids sorting candidate documents. Instead, it uses an interactive bisection method to determine the set of top-k documents. For security, P²RAG uses secret sharing on two semi-honest non-colluding servers to protect the data owner's database and the user's prompt. It enforces restrictions and verification to defend against malicious users and tightly bounds the information leakage of the database. The experiments show that P²RAG is 3--300× faster than the state-of-the-art PRAG for k = 16--1024.Thu, 11 Jun 2026 00:00:00 GMT