openfheorg/openfhe-development

Health v2 · maintenance only

Adoption not part of the score

1192 stars · 306 forks observed · 2026-09-01

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

OpenFHE is an open-source C++ library for fully homomorphic encryption (FHE), implementing all major schemes (BFV, BGV, CKKS, FHEW/TFHE, LMKCDEY) plus threshold FHE and proxy re-encryption. It enables computation over encrypted data without access to the secret key.

Use cases

• compute on encrypted data without decrypting it
• perform arithmetic on encrypted integers or real numbers
• evaluate boolean circuits or lookup tables on encrypted data
• implement threshold encryption with multiple key holders
• re-encrypt ciphertexts for another party without revealing secrets
• build privacy-preserving machine learning or analytics pipelines

When to choose

• you need production-grade FHE with all major schemes in one library
• you want threshold FHE or proxy re-encryption support
• you need high-performance C++ FHE with GPU/hardware acceleration options
• you want an actively maintained, well-documented FHE library

When to avoid

• you only need standard symmetric or public-key encryption
• your workload cannot tolerate FHE's large performance overhead
• you need a language other than C++ without bindings
• you want a simple drop-in crypto API rather than lattice-based schemes

Facets

library · maturity active

cryptography security privacy security privacy developer-tools cpp windows cross-platform homomorphic-encryption fhe lattice-cryptography bfv bgv ckks tfhe threshold-fhe secure-multiparty-computation proxy-re-encryption algorithms linux macos

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