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Typed FHE arguments #378

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Typed FHE arguments #378

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68e5f9e
Add initial `.as_spf()` with example
samtay Jun 13, 2024
505efcb
Actually make Cipher<T> a real type and not just a marker
samtay Jun 17, 2024
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16 changes: 6 additions & 10 deletions examples/amm/src/main.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
use sunscreen::{
fhe_program,
types::{bfv::Rational, Cipher},
Ciphertext, CompiledFheProgram, Compiler, Error, FheRuntime, Params, PrivateKey, PublicKey,
CompiledFheProgram, Compiler, Error, FheRuntime, Params, PrivateKey, PublicKey,
};

#[fhe_program(scheme = "bfv")]
Expand Down Expand Up @@ -37,14 +37,10 @@ impl Miner {

pub fn run_contract(
&self,
nu_tokens_to_trade: Ciphertext,
nu_tokens_to_trade: Cipher<Rational>,
public_key: &PublicKey,
) -> Result<Ciphertext, Error> {
let results =
self.runtime
.run(&self.compiled_swap_nu, vec![nu_tokens_to_trade], public_key)?;

Ok(results[0].clone())
) -> Result<Cipher<Rational>, Error> {
swap_nu.run(&self.runtime, public_key, nu_tokens_to_trade)
}
}

Expand Down Expand Up @@ -73,13 +69,13 @@ impl Alice {
})
}

pub fn create_transaction(&self, amount: f64) -> Result<Ciphertext, Error> {
pub fn create_transaction(&self, amount: f64) -> Result<Cipher<Rational>, Error> {
Ok(self
.runtime
.encrypt(Rational::try_from(amount)?, &self.public_key)?)
}

pub fn check_received_eth(&self, received_eth: Ciphertext) -> Result<(), Error> {
pub fn check_received_eth(&self, received_eth: Cipher<Rational>) -> Result<(), Error> {
let received_eth: Rational = self.runtime.decrypt(&received_eth, &self.private_key)?;

let received_eth: f64 = received_eth.into();
Expand Down
77 changes: 25 additions & 52 deletions examples/calculator_fractional/src/main.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -6,8 +6,7 @@ use std::thread::{self, JoinHandle};
use sunscreen::{
fhe_program,
types::{bfv::Fractional, Cipher},
Ciphertext, Compiler, FheApplication, FheRuntime, Params, PlainModulusConstraint, PublicKey,
RuntimeError,
Compiler, FheApplication, FheRuntime, Params, PlainModulusConstraint, PublicKey, RuntimeError,
};

fn help() {
Expand All @@ -26,7 +25,7 @@ fn help() {
enum Term {
Ans,
F64(f64),
Encrypted(Ciphertext),
Encrypted(Cipher<Fractional<64>>),
}

#[derive(PartialEq)]
Expand Down Expand Up @@ -134,7 +133,7 @@ fn alice(
send_pub: Sender<PublicKey>,
send_calc: Sender<Expression>,
recv_params: Receiver<Params>,
recv_res: Receiver<Ciphertext>,
recv_res: Receiver<Cipher<Fractional<64>>>,
) -> JoinHandle<()> {
thread::spawn(move || {
let stdin = io::stdin();
Expand Down Expand Up @@ -191,7 +190,7 @@ fn alice(
.unwrap();

// Get our result from Bob and print it.
let result: Ciphertext = recv_res.recv().unwrap();
let result: Cipher<Fractional<64>> = recv_res.recv().unwrap();
let result: Fractional<64> = match runtime.decrypt(&result, &private_key) {
Ok(v) => v,
Err(RuntimeError::TooMuchNoise) => {
Expand All @@ -207,22 +206,22 @@ fn alice(
})
}

fn compile_fhe_programs() -> FheApplication {
#[fhe_program(scheme = "bfv")]
fn add(a: Cipher<Fractional<64>>, b: Cipher<Fractional<64>>) -> Cipher<Fractional<64>> {
a + b
}
#[fhe_program(scheme = "bfv")]
fn add(a: Cipher<Fractional<64>>, b: Cipher<Fractional<64>>) -> Cipher<Fractional<64>> {
a + b
}

#[fhe_program(scheme = "bfv")]
fn sub(a: Cipher<Fractional<64>>, b: Cipher<Fractional<64>>) -> Cipher<Fractional<64>> {
a - b
}
#[fhe_program(scheme = "bfv")]
fn sub(a: Cipher<Fractional<64>>, b: Cipher<Fractional<64>>) -> Cipher<Fractional<64>> {
a - b
}

#[fhe_program(scheme = "bfv")]
fn mul(a: Cipher<Fractional<64>>, b: Cipher<Fractional<64>>) -> Cipher<Fractional<64>> {
a * b
}
#[fhe_program(scheme = "bfv")]
fn mul(a: Cipher<Fractional<64>>, b: Cipher<Fractional<64>>) -> Cipher<Fractional<64>> {
a * b
}

fn compile_fhe_programs() -> FheApplication {
Compiler::new()
.fhe_program(add)
.fhe_program(sub)
Expand All @@ -238,7 +237,7 @@ fn bob(
recv_pub: Receiver<PublicKey>,
recv_calc: Receiver<Expression>,
send_params: Sender<Params>,
send_res: Sender<Ciphertext>,
send_res: Sender<Cipher<Fractional<64>>>,
) -> JoinHandle<()> {
thread::spawn(move || {
let app = compile_fhe_programs();
Expand Down Expand Up @@ -268,41 +267,14 @@ fn bob(
_ => panic!("Alice sent us a plaintext!"),
};

let mut c = match op {
Operand::Add => runtime
.run(
app.get_fhe_program("add").unwrap(),
vec![left, right],
&public_key,
)
.unwrap(),
Operand::Sub => runtime
.run(
app.get_fhe_program("sub").unwrap(),
vec![left, right],
&public_key,
)
.unwrap(),
Operand::Mul => runtime
.run(
app.get_fhe_program("mul").unwrap(),
vec![left, right],
&public_key,
)
.unwrap(),
// To do division, Alice must send us 1 / b and we
// multiply.
Operand::Div => runtime
.run(
app.get_fhe_program("mul").unwrap(),
vec![left, right],
&public_key,
)
.unwrap(),
let c = match op {
Operand::Add => add.run(&runtime, &public_key, left, right).unwrap(),
Operand::Sub => sub.run(&runtime, &public_key, left, right).unwrap(),
Operand::Mul => mul.run(&runtime, &public_key, left, right).unwrap(),
Operand::Div => mul.run(&runtime, &public_key, left, right).unwrap(),
};

// Our FHE program produces a single value, so move the value out of the vector.
let c = c.drain(0..).next().unwrap();
ans = c.clone();

send_res.send(c).unwrap();
Expand All @@ -321,7 +293,8 @@ fn main() {
let (send_bob_params, receive_bob_params) = std::sync::mpsc::channel::<Params>();

// A channel for Bob to send calculation results to Alice.
let (send_bob_result, receive_bob_result) = std::sync::mpsc::channel::<Ciphertext>();
let (send_bob_result, receive_bob_result) =
std::sync::mpsc::channel::<Cipher<Fractional<64>>>();

// We intentionally break Alice and Bob's roles into different functions to clearly
// show the separation of their roles. In a real application, they're usually on
Expand Down
81 changes: 28 additions & 53 deletions examples/calculator_rational/src/main.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@ use sunscreen::FheRuntime;
use sunscreen::{
fhe_program,
types::{bfv::Rational, Cipher},
Ciphertext, Compiler, FheApplication, Params, PlainModulusConstraint, PublicKey, RuntimeError,
Compiler, FheApplication, Params, PlainModulusConstraint, PublicKey, RuntimeError,
};

fn help() {
Expand All @@ -26,7 +26,7 @@ fn help() {
enum Term {
Ans,
F64(f64),
Encrypted(Ciphertext),
Encrypted(Cipher<Rational>),
}

enum Operand {
Expand Down Expand Up @@ -116,7 +116,7 @@ fn alice(
send_pub: Sender<PublicKey>,
send_calc: Sender<Expression>,
recv_params: Receiver<Params>,
recv_res: Receiver<Ciphertext>,
recv_res: Receiver<Cipher<Rational>>,
) -> JoinHandle<()> {
thread::spawn(move || {
let stdin = io::stdin();
Expand Down Expand Up @@ -173,7 +173,7 @@ fn alice(
.unwrap();

// Get our result from Bob and print it.
let result: Ciphertext = recv_res.recv().unwrap();
let result: Cipher<Rational> = recv_res.recv().unwrap();
let result: Rational = match runtime.decrypt(&result, &private_key) {
Ok(v) => v,
Err(RuntimeError::TooMuchNoise) => {
Expand All @@ -189,27 +189,27 @@ fn alice(
})
}

fn compile_fhe_programs() -> FheApplication {
#[fhe_program(scheme = "bfv")]
fn add(a: Cipher<Rational>, b: Cipher<Rational>) -> Cipher<Rational> {
a + b
}
#[fhe_program(scheme = "bfv")]
fn add(a: Cipher<Rational>, b: Cipher<Rational>) -> Cipher<Rational> {
a + b
}

#[fhe_program(scheme = "bfv")]
fn sub(a: Cipher<Rational>, b: Cipher<Rational>) -> Cipher<Rational> {
a - b
}
#[fhe_program(scheme = "bfv")]
fn sub(a: Cipher<Rational>, b: Cipher<Rational>) -> Cipher<Rational> {
a - b
}

#[fhe_program(scheme = "bfv")]
fn mul(a: Cipher<Rational>, b: Cipher<Rational>) -> Cipher<Rational> {
a * b
}
#[fhe_program(scheme = "bfv")]
fn mul(a: Cipher<Rational>, b: Cipher<Rational>) -> Cipher<Rational> {
a * b
}

#[fhe_program(scheme = "bfv")]
fn div(a: Cipher<Rational>, b: Cipher<Rational>) -> Cipher<Rational> {
a / b
}
#[fhe_program(scheme = "bfv")]
fn div(a: Cipher<Rational>, b: Cipher<Rational>) -> Cipher<Rational> {
a / b
}

fn compile_fhe_programs() -> FheApplication {
// We compile all the programs together so they have compatible
// scheme parameters
Compiler::new()
Expand All @@ -228,7 +228,7 @@ fn bob(
recv_pub: Receiver<PublicKey>,
recv_calc: Receiver<Expression>,
send_params: Sender<Params>,
send_res: Sender<Ciphertext>,
send_res: Sender<Cipher<Rational>>,
) -> JoinHandle<()> {
thread::spawn(move || {
let app = compile_fhe_programs();
Expand Down Expand Up @@ -258,39 +258,14 @@ fn bob(
_ => panic!("Alice sent us a plaintext!"),
};

let mut c = match op {
Operand::Add => runtime
.run(
app.get_fhe_program("add").unwrap(),
vec![left, right],
&public_key,
)
.unwrap(),
Operand::Sub => runtime
.run(
app.get_fhe_program("sub").unwrap(),
vec![left, right],
&public_key,
)
.unwrap(),
Operand::Mul => runtime
.run(
app.get_fhe_program("mul").unwrap(),
vec![left, right],
&public_key,
)
.unwrap(),
Operand::Div => runtime
.run(
app.get_fhe_program("div").unwrap(),
vec![left, right],
&public_key,
)
.unwrap(),
let c = match op {
Operand::Add => add.run(&runtime, &public_key, left, right).unwrap(),
Operand::Sub => sub.run(&runtime, &public_key, left, right).unwrap(),
Operand::Mul => mul.run(&runtime, &public_key, left, right).unwrap(),
Operand::Div => div.run(&runtime, &public_key, left, right).unwrap(),
};

// Our FHE program produces a single value, so move the value out of the vector.
let c = c.drain(0..).next().unwrap();
ans = c.clone();

send_res.send(c).unwrap();
Expand All @@ -309,7 +284,7 @@ fn main() {
let (send_bob_params, receive_bob_params) = std::sync::mpsc::channel::<Params>();

// A channel for Bob to send calculation results to Alice.
let (send_bob_result, receive_bob_result) = std::sync::mpsc::channel::<Ciphertext>();
let (send_bob_result, receive_bob_result) = std::sync::mpsc::channel::<Cipher<Rational>>();

// We intentionally break Alice and Bob's roles into different functions to clearly
// show the separation of their roles. In a real application, they're usually on
Expand Down
2 changes: 1 addition & 1 deletion examples/chi_sq/src/main.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -169,7 +169,7 @@ fn run_fhe<F, T, U>(
) -> Result<(), Error>
where
F: FheProgramFn + Clone + 'static + AsRef<str>,
U: From<T> + FheType + TypeName + std::fmt::Display,
U: From<T> + FheType + TypeName + std::fmt::Display + 'static,
{
let start = Instant::now();

Expand Down
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