name: fhe-privacy-preserving-llm description: > Fully Homomorphic Encryption (FHE) patterns for privacy-preserving LLM inference. Covers lattice-based cryptography (LWE/RLWE), FHE scheme selection (BFV, BGV, CKKS), and techniques for running large models on encrypted data. Based on implementation of FHE on Llama 3 for secure computation. Use when: building privacy-preserving AI inference systems, implementing homomorphic encryption for ML models, or designing secure computation pipelines for sensitive data. arXiv: 2604.12168
Fully Homomorphic Encryption for Privacy-Preserving LLM Inference
FHE patterns and methodologies for secure LLM inference on encrypted data.
Core Architecture
FHE Scheme Selection
- BFV/BGV: Integer arithmetic, exact computation
- CKKS: Approximate arithmetic, floating-point support
- TFHE: Boolean logic, gate-level operations
LLM-FHE Integration Patterns
- Weight encryption: Encrypt model weights, compute on plaintext input
- Input encryption: Encrypt user input, compute with plaintext weights
- Hybrid approach: Selective encryption for sensitive layers only
Performance Optimization
- SIMD batching for parallel computation
- Bootstrapping strategies for depth management
- Approximate activation functions compatible with FHE
Implementation Workflow
- Choose FHE scheme based on computation type
- Quantize model weights for FHE compatibility
- Implement encrypted matrix multiplication kernels
- Design bootstrapping schedule for deep networks
- Benchmark latency and accuracy trade-offs
Key References
- arXiv:2604.12168 - Fully Homomorphic Encryption on Llama 3 model for privacy preserving LLM inference
- Lattice-based cryptography foundations (LWE, RLWE assumptions)
Activation Keywords
- fully homomorphic encryption
- FHE LLM inference
- privacy preserving ML
- homomorphic encryption AI
- encrypted model inference
- lattice cryptography
- 全同态加密
- secure computation LLM