encrypt: Encrypt a plaintext

In openfhe.R: R Interface to the 'OpenFHE' Fully Homomorphic Encryption Library

Encrypt a plaintext

Description

encrypt dispatches on both the key type and the plaintext. The ⁠(PublicKey, Plaintext)⁠ method performs public-key encryption and is the canonical path used by every vignette. The ⁠(PrivateKey, Plaintext)⁠ method performs symmetric / secret-key encryption using the private key directly; it is useful in protocols that want the secret key to serve as both encryption and decryption key (e.g. one-party tests, single-user benchmarks).

Usage

encrypt(key, pt, ...)

Arguments

key	A PublicKey or PrivateKey.
pt	A Plaintext.
...	Additional arguments (cc = CryptoContext is required).

Value

A Ciphertext.

Examples

cc <- fhe_context("CKKS", multiplicative_depth = 2L,
                  scaling_mod_size = 50L, batch_size = 8L)
kp <- key_gen(cc, eval_mult = TRUE)
pt <- make_ckks_packed_plaintext(cc, c(0.5, 1.5, 2.5, 3.5))

## Public-key encryption -- the usual path, and the one that lets a
## party encrypt without holding the secret key:
ct <- encrypt(kp@public, pt, cc = cc)
ct

## Symmetric encryption with the secret key, for protocols where the
## same party encrypts and decrypts:
ct2 <- encrypt(kp@secret, pt, cc = cc)
ct2

openfhe.R documentation built on Nov. 13, 2026, 5:07 p.m.