openfhe.R
R Interface to the 'OpenFHE' Fully Homomorphic Encryption Library
Provides an R interface to 'OpenFHE', the open-source C++
library for fully homomorphic encryption (Al Badawi and others, 2022)
< https://eprint.iacr.org/2022/915>, which allows computation directly
on encrypted data without access to the secret key. Supports the
Brakerski-Fan-Vercauteren (BFV, 2012) < https://eprint.iacr.org/2012/144>,
Brakerski-Gentry-Vaikuntanathan (BGV, 2014)
openfhe.R 
This is an interface to the Fully Homomorphic Encryption library developed by OpenFHE.
The companion package homomorpheR (version >= 1.0, soon to be on CRAN) imports this package and includes a number of illustrative vignettes. Specifically, the examples demonstrate how to use existing R functions and optimizers to implement a homomorphic-encryption protocol across multiple sites.
Schemes
- BFV / BGV: exact integer arithmetic
- CKKS: approximate real-number arithmetic (with sin, cos, logistic, bootstrapping)
- FHEW / TFHE (BinFHE): Boolean circuit evaluation
All four FHE subsystems (BFV, BGV, CKKS, BinFHE) are exposed. In addition, we provide facilities for serialization, threshold FHE, CKKS bootstrapping, transcendental function evaluation, and CKKS hoisted (fast) rotations.
Quick Start
library(openfhe.R)
# BFV: exact integer arithmetic
cc <- fhe_context("BFV", plaintext_modulus = 65537, multiplicative_depth = 2)
keys <- key_gen(cc, eval_mult = TRUE)
ct1 <- encrypt(keys@public, make_packed_plaintext(cc, 1:8), cc = cc)
ct2 <- encrypt(keys@public, make_packed_plaintext(cc, 10:17), cc = cc)
# Compute on encrypted data
result <- decrypt(ct1 + ct2, keys@secret, cc = cc)
get_packed_value(result)[1:8]
#> [1] 11 13 15 17 19 21 23 25