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mod evaluator;
mod garbler;
pub use evaluator::Evaluator;
pub use garbler::Garbler;
#[cfg(test)]
mod tests {
use super::*;
use crate::{
circuit::{eval_plain, BinaryCircuit, CircuitInfo, EvaluableCircuit},
dummy::Dummy,
util::RngExt,
AllWire, CrtBundle, CrtGadgets, FancyArithmetic, FancyBinary, FancyInput, WireLabel,
WireMod2,
};
use itertools::Itertools;
use ocelot::ot::{ChouOrlandiReceiver, ChouOrlandiSender};
use scuttlebutt::{unix_channel_pair, AesRng, UnixChannel};
fn addition<F: FancyArithmetic>(
f: &mut F,
a: &F::Item,
b: &F::Item,
) -> Result<Option<u16>, F::Error> {
let c = f.add(&a, &b)?;
f.output(&c)
}
#[test]
fn test_addition_circuit() {
for a in 0..2 {
for b in 0..2 {
let (sender, receiver) = unix_channel_pair();
std::thread::spawn(move || {
let rng = AesRng::new();
let mut gb = Garbler::<UnixChannel, AesRng, ChouOrlandiSender, AllWire>::new(
sender, rng,
)
.unwrap();
let x = gb.encode(a, 3).unwrap();
let ys = gb.receive_many(&[3]).unwrap();
addition(&mut gb, &x, &ys[0]).unwrap();
});
let rng = AesRng::new();
let mut ev = Evaluator::<UnixChannel, AesRng, ChouOrlandiReceiver, AllWire>::new(
receiver, rng,
)
.unwrap();
let x = ev.receive(3).unwrap();
let ys = ev.encode_many(&[b], &[3]).unwrap();
let output = addition(&mut ev, &x, &ys[0]).unwrap().unwrap();
assert_eq!((a + b) % 3, output);
}
}
}
fn relu<F: FancyArithmetic + FancyBinary>(
b: &mut F,
xs: &[CrtBundle<F::Item>],
) -> Option<Vec<u128>> {
let mut outputs = Vec::new();
for x in xs.iter() {
let q = x.composite_modulus();
let c = b.crt_constant_bundle(1, q).unwrap();
let y = b.crt_mul(&x, &c).unwrap();
let z = b.crt_relu(&y, "100%", None).unwrap();
outputs.push(b.crt_output(&z).unwrap());
}
outputs.into_iter().collect()
}
#[test]
fn test_relu() {
let mut rng = rand::thread_rng();
let n = 10;
let ps = crate::util::primes_with_width(10);
let q = crate::util::product(&ps);
let input = (0..n).map(|_| rng.gen_u128() % q).collect::<Vec<u128>>();
let mut dummy = Dummy::new();
let dummy_input = input
.iter()
.map(|x| dummy.crt_encode(*x, q).unwrap())
.collect_vec();
let target = relu(&mut dummy, &dummy_input).unwrap();
let (sender, receiver) = unix_channel_pair();
std::thread::spawn(move || {
let rng = AesRng::new();
let mut gb =
Garbler::<UnixChannel, AesRng, ChouOrlandiSender, AllWire>::new(sender, rng)
.unwrap();
let xs = gb.crt_encode_many(&input, q).unwrap();
relu(&mut gb, &xs);
});
let rng = AesRng::new();
let mut ev =
Evaluator::<UnixChannel, AesRng, ChouOrlandiReceiver, AllWire>::new(receiver, rng)
.unwrap();
let xs = ev.crt_receive_many(n, q).unwrap();
let result = relu(&mut ev, &xs).unwrap();
assert_eq!(target, result);
}
type GB<Wire> = Garbler<UnixChannel, AesRng, ChouOrlandiSender, Wire>;
type EV<Wire> = Evaluator<UnixChannel, AesRng, ChouOrlandiReceiver, Wire>;
fn test_circuit<CIRC, Wire: WireLabel>(circ: CIRC)
where
CIRC: EvaluableCircuit<Dummy>
+ EvaluableCircuit<GB<Wire>>
+ EvaluableCircuit<EV<Wire>>
+ CircuitInfo
+ Send
+ 'static,
{
circ.print_info().unwrap();
let circ_ = circ.clone();
let (sender, receiver) = unix_channel_pair();
let handle = std::thread::spawn(move || {
let rng = AesRng::new();
let mut gb =
Garbler::<UnixChannel, AesRng, ChouOrlandiSender, Wire>::new(sender, rng).unwrap();
let xs = gb.encode_many(&vec![0_u16; 128], &vec![2; 128]).unwrap();
let ys = gb.receive_many(&vec![2; 128]).unwrap();
circ_.eval(&mut gb, &xs, &ys).unwrap();
});
let rng = AesRng::new();
let mut ev =
Evaluator::<UnixChannel, AesRng, ChouOrlandiReceiver, Wire>::new(receiver, rng)
.unwrap();
let xs = ev.receive_many(&vec![2; 128]).unwrap();
let ys = ev.encode_many(&vec![0_u16; 128], &vec![2; 128]).unwrap();
let out = circ.eval(&mut ev, &xs, &ys).unwrap().unwrap();
handle.join().unwrap();
let target = eval_plain(&circ, &vec![0_u16; 128], &vec![0_u16; 128]).unwrap();
assert_eq!(out, target);
}
#[test]
fn test_aes_arithmetic() {
let circ = BinaryCircuit::parse(std::io::Cursor::<&'static [u8]>::new(include_bytes!(
"../../../circuits/AES-non-expanded.txt"
)))
.unwrap();
test_circuit::<_, AllWire>(circ);
}
#[test]
fn test_aes_binary() {
let circ = BinaryCircuit::parse(std::io::Cursor::<&'static [u8]>::new(include_bytes!(
"../../../circuits/AES-non-expanded.txt"
)))
.unwrap();
test_circuit::<_, WireMod2>(circ);
}
}
