To encrypt data, use the encrypt method from the FheEncrypt trait. This crate provides types that implement either FheEncrypt or FheTryEncrypt or both, to enable encryption.
Here is an example:
use tfhe::prelude::*;
use tfhe::{generate_keys, ConfigBuilder, FheUint8};
fn main() {
let config = ConfigBuilder::default().build();
let (client_key, server_key) = generate_keys(config);
let clear_a = 27u8;
let clear_b = 128u8;
let a = FheUint8::encrypt(clear_a, &client_key);
let b = FheUint8::encrypt(clear_b, &client_key);
}