SIGNALAI·Jun 9, 2026, 4:00 AMSignal75Medium term

FuseFSS: Efficient Secure LLM Inference with Function Secret Sharing

Source: arXiv cs.AI

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FuseFSS: Efficient Secure LLM Inference with Function Secret Sharing

arXiv:2606.09551v1 Announce Type: cross Abstract: Two-server secure inference allows a client to query a hosted large language model (LLM) without revealing prompts or embeddings. Recent GPU systems based on function secret sharing (FSS) make linear layers efficient, but fixed-point nonlinearities and helper operations remain a bottleneck because each operator is typically implemented as a bespoke protocol with its own comparisons, wrap-around corrections, and preprocessing material. We present FuseFSS, a compiler that replaces per-operator protocol design with a single compilation pipeline. F

Why this matters
Why now

The increasing deployment of large language models for sensitive applications necessitates robust privacy-preserving inference methods, addressing a key barrier to widespread adoption.

Why it’s important

This development enables secure LLM inference without revealing proprietary prompts or embeddings, which is critical for privacy-conscious industries and sovereign AI initiatives.

What changes

The bottleneck in secure LLM inference, previously due to complex implementation of nonlinear operations, is mitigated by a compiler-based approach, streamlining development and improving efficiency.

Winners
  • · Privacy-focused AI companies
  • · Healthcare sector
  • · Financial services
  • · Government agencies
Losers
  • · Less efficient secure inference methods
  • · Organizations relying on insecure LLM deployments
Second-order effects
Direct

Increased adoption of privacy-preserving LLMs across sensitive data domains.

Second

Acceleration in the development and availability of secure AI-powered applications, leading to new market opportunities.

Third

Enhanced trust and regulatory acceptance for AI solutions, potentially shaping future data privacy legislation globally.

Editorial confidence: 90 / 100 · Structural impact: 60 / 100
Original report

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Read at arXiv cs.AI
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