# openfheorg/openfhe-development

This is the development repository for the OpenFHE library. The current version is 1.5.1 (released on April 10, 2026).

Repository: https://github.com/openfheorg/openfhe-development
Canonical: https://ross.abutalabs.com/products/openfhe-development
Language: C++
License: BSD-2-Clause
License Family: permissive
Topics: cpp, cryptography, homomorphic-encryption, homomorphic-encryption-library, fully-homomorphic-encryption, lattice, privacy, fhe, secure-multiparty-computation
Last push: 2026-09-01T00:25:04+00:00

## Health v2 (maintenance only)
Score: 88/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 66, longevity 100
- inputs: {"age_days": 1643, "days_push": 2, "days_rel": 145, "gap_med": 49.0, "n_releases_24m": 11}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1192, forks 306 (observed 2026-09-01T02:14:05.550252+00:00)

## What it is
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
- artifact type: library
- maturity: active
- function: cryptography, security, privacy
- domain: security, privacy, developer-tools
- platform: cpp, windows, cross-platform
- tags: homomorphic-encryption, fhe, lattice-cryptography, bfv, bgv, ckks, tfhe, threshold-fhe, secure-multiparty-computation, proxy-re-encryption, algorithms, linux, macos

## Member repositories
- openfheorg/openfhe-development (main) score 88

## Provenance
- Observed fields: from GitHub, fetched 2026-09-01T02:14:05.550252+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:24:20.336397+00:00, confidence not recorded.
  - readme: https://github.com/openfheorg/openfhe-development (fetched 2026-09-01T02:14:05.550252+00:00, sha ac506eddc725)
- Data as of 2026-08-30T08:39:29.467469+00:00.